Tag Archives: dry vacuum pump

China OEM Dvp-180 4kw 181m3/H Petrochemical Pharmaceutical Industry Variable Pitch Dry Screw Vacuum Pump vacuum pump electric

Product Description

 

Working principle

The vacuum in dry screw pumps is created through 2 parallel-arranged screw rotors that rotate in opposite directions. These rotors trap the gas coming in through the inlet and deliver it to the gas discharge or pressure side. As the gas is getting compressed, there is no contact between the rotors. This does away with any need for the compression chamber to have any operating fluids or lubrication.
 The lubricant used to lubricate the gears and shaft seal is sealed in the gearbox by the shaft seal. The pump can be cooled either directly by circulating cooling water or by a cooling unit with fan and radiator.
The dry screw vacuum pump adopts a special rotor pitch design, compared with the ordinary rotor pitch design, reduce the energy consumption by about 30%, the temperature rise of the exhaust end is reduced by about 100 ºC, the reliability and stability of the operation of the product is greatly improved, can be suitable for any working conditions of vacuum.
The dry screw pumps can be widely used in solvent recovery, vacuum drying, concentration, crystallization, distillation and other processes in the chemical and pharmaceutical industries, vacuum extrusion and molding in the plastic and rubber industries, vacuum degassing in the metallurgical industry; vacuum degassing and drying in the solar energy, microelectronics, lithium battery and other industries.

Pump body and end caps:  high-strength cast iron.
Pump body and end caps:  high strength cast iron.
Screw rotor:                        ductile cast iron.
Anti-corrosion coating:        corrosion-resistant Hastelloy.
Synchronous gears:            alloy steel.
Radial lip seal:                     imported PTFE mixture or
                                            high-temperature resistant fluorine rubber;
Seal bushings:                    stainless steel surface covered with ceramic.

Flow chart

 

Main features

1. The screw rotor is designed with variable pitch structure, the ultimate vacuum can reach below 1Pa, which can meet all kinds of vacuum processing from atmosphere to high vacuum.
2. Oil free – Adapt to various special working conditions for reliable use.
3. It can operate reliably in the pressure range from atmosphere to several Pa.
4. No friction between moving parts, simple structure, lower operation and maintenance cost.
5. Nitrogen seal and composite seal design is optional, which has the benefit of good reliability, low cost of use, simple maintenance.
6. The rotor is dynamically balanced at high speed and the motor is connected by flange, with high concentricity, low vibration and low noise.
7. Hastelloy anti-corrosion coating is optional for rotor surface, condensable material is not easy to condense in the pump cavity, better corrosion resistance.
8. Compared with oil seal pump, liquid ring pump, there is no waste gas, no waste liquid, no waste oil emission, energy saving and environmental friendly.
It can be used alone or with Roots vacuum pump, air-cooled Roots vacuum pump, molecular vacuum pump, etc. to obtain an oil-free high vacuum system.

The benefit of dry screw vacuum pump compared to liquid ring vacuum pump:

    -Shorten the process cycle and improve production efficiency
    -Reduce water consumption
    -Save energy
    -Improve product quality
    -Can recover solvent by reducing the drying time of products
    -Reduce the cost of wastewater and waste gas treatment

A CASE in a pharmaceutical factory
Process introduction:The penicillin sodium salt solution is fed into the crystallization tank through vacuum. By steam heating, agitator stirring, and adding butanol, the water and butanol in the penicillin solution are pumped into the condenser and condensed into the liquid collecting tank, which can be reused.

Process requirements:
1. The volume of crystallization tank is 7.5m3, and about 4.5m3 penicillin solution is added in the process.
2. Before entering the crystallization tank, the water content of penicillin solution is about 20%, and after crystallization, the water content is required to be about 1%.
3. Vacuum feeding for 2h, then adding butanol for 30min, and then starting to crystallize. The process requires low temperature and fast speed, and the lower the temperature, the better the quality of penicillin. The shorter the reaction time, the better.
4. Vacuum degree requirements: the vacuum degree shall be kept above -0.097MPa. High vacuum degree can reduce the reaction temperature and shorten the reaction time.

The previous vacuum system was 2BE1252+air ejector, which is now transformed into a dry screw vacuum pump. The comparison table of test data is as follows:

vacuum system 2BE1252+ejector DVP 1600 screw pump
Feeding time (h) 2 1.5
Liquid temperature at the beginning of crystallization (ºC) 31.5 16.6
Crystallization time (h) 6 4.5
Time from crystallization to liquid coming out (min) 30 15
Crystal quality average good
Power consumption (KW) 45 37
Water consumption (m3) 26.4 0.72

Economic benefit analysis:

  Cost saving(USD) Remark
Water consumption and treatment 130 Water cost: $0.65/m3, water treatment: 30/m3
Power 15 $0.15/Kwh
Labor, production efficiency 43 Reduced from 6 hour to 4.5 hour
Sum up 188  

Please contact us for a detailed report of economic benefit analysis for your applications! 

 

Configuration
Standard configuration:
Machine base, pump head, coupling, motor, driving screen, air inlet connector, check valve, vacuum gauge, manual filling valve exhaust port muffler.
Optional accessories:
Inlet filter, inlet condenser, solvent flushing device, nitrogen purging device, nitrogen sealing device, exhaust port condenser, solenoid filling valve, cooling water flow switch, temperature sensor, pressure transmitter.

Applications

Leak Detection    Metallurgy  Industrial furnace  Lithium Battery
Chemical, pharmaceutical  Wind tunnel test  Power Industry Vacuum coating
Microelectronics industry Drying Process  Packaging and Printing Solar Energy
Exhaust gas recovery       

Product Parameters

Technical data of Variable pitch Dry screw vacuum pump

                Spec.
Model
Nominal pumping speed(50Hz) Ultimate pressure Nominal motor rating (50Hz)   Nominal motor speed  (50Hz)  Noise level   Lp Maximum
cooling water required
Suction Connection size Discharge Connection size Weight (Without Motor)
 m³/h Pa kw rpm dB(A) L/min mm mm Kg
DVP-180 181 2 4 2900 82 8 50 40 280
DVP-360 354 2 7.5 2900 83 10 50 40 400
DVP-540 535 2 11 2900 83 10 50 40 500
DVP-650 645 1 15 2900 84 20 65 50 600
DVP-800 780 1 22 2900 86 30 100 80 800
DVP-1600 1450 1 37 2900 86 40 125 100 1200

Technical data of Constant pitch Dry screw vacuum pump

                Spec.
Model
Nominal pumping speed(50Hz) Ultimate pressure Nominal motor rating (50Hz)   Nominal motor speed  (50Hz)  Noise level   Lp Maximum
cooling water required
Suction Connection size Discharge Connection size Weight (Without Motor)
 m³/h Pa kw rpm dB(A) L/min mm mm Kg
DSP-140 143 5 4 2900 82 10 50 40 240
DSP-280 278 5 7.5 2900 83 20 50 40 350
DSP-540 521 5 15 2900 83 30 65 50 550
DSP-650 617 5 18.5 2900 84 45 65 50 630
DSP-720 763 5 22 2900 85 55 80 80 780
DSP-1000 912 5 30 2900 86 70 100 80 880

Note: The cooling water volume of the dry screw vacuum pump provided in the table is the amount under 20ºC room temperature water. When the dry screw vacuum pump uses cooling device, the cooling water will be increased, the difference of inlet and outlet water temperature is generally controlled below 7ºC is appropriate.

 

Dimension

 

 

FAQ

Q: What information should I offer for an inquiry?
A: You can inquire based on the model directly, but it is always recommended that you contact us so that we can help you to check if the pump is the most appropriate for your application.

Q: Can you make a customized vacuum pump?
A: Yes, we can do some special designs to meet customer applications. Such as customized sealing systems, speical surface treatment can be applied for roots vacuum pump and screw vacuum pump. Please contact us if you have special requirements. 

Q: I have problems with our vacuum pumps or vacuum systems, can you offer some help?
A: We have application and design engineers with more than 30 years of experience in vacuum applications in different industries and help a lot of customers resolve their problems, such as leakage issues, energy-saving solutions, more environment-friendly vacuum systems, etc. Please contact us and we’ll be very happy if we can offer any help to your vacuum system.

Q: Can you design and make customized vacuum systems?
A: Yes, we are good for this.

Q: What is your MOQ?
A: 1 piece or 1 set.

Q: How about your delivery time?
A: 5-10 working days for the standard vacuum pump if the quantity is below 20 pieces, 20-30 working days for the conventional vacuum system with less than 5 sets. For more quantity or special requirements, please contact us to check the lead time.

Q: What are your payment terms?
A: By T/T, 50% advance payment/deposit and 50% paid before shipment.

Q: How about the warranty?
A: We offer 1-year warranty (except for the wearing parts).

Q: How about the service?
A: We offer remote video technical support. We can send the service engineer to the site for some special requirements.

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After-sales Service: Online Video Instruction
Warranty: 1 Year
Nominal Pumping Speed(50Hz): 181 M3/H
Ultimate Pressure: 2 PA
Nominal Motor Rating(50Hz): 4 Kw
Nominal Motor Speed(50Hz): 2900 Rpm

screw vane pump

What are the cost considerations when purchasing and maintaining screw vacuum pumps?

When purchasing and maintaining screw vacuum pumps, several cost considerations come into play. Here’s a detailed explanation of the key factors to consider:

1. Initial Purchase Cost:

The initial purchase cost of a screw vacuum pump is an important consideration. The cost can vary depending on factors such as the pump’s capacity, specifications, features, and the manufacturer. Generally, screw vacuum pumps tend to have a higher upfront cost compared to some other types of vacuum pumps. However, it’s essential to evaluate the long-term benefits and performance advantages offered by screw vacuum pumps to determine their overall value for the specific application.

2. Energy Consumption:

Energy consumption is a significant ongoing cost associated with operating screw vacuum pumps. While screw vacuum pumps are known for their high efficiency, it’s important to consider the power requirements and energy consumption of the specific pump model. Opting for energy-efficient screw vacuum pumps can result in long-term cost savings by reducing electricity bills and minimizing the environmental impact. Additionally, pumps equipped with advanced control systems or variable speed drives allow for better energy optimization and can further enhance cost-effectiveness.

3. Maintenance and Service:

Maintenance and service costs are important considerations throughout the lifecycle of a screw vacuum pump. Regular maintenance is necessary to ensure optimal performance, reliability, and longevity of the equipment. The specific maintenance requirements and associated costs can vary depending on the pump model and manufacturer. It’s crucial to follow the manufacturer’s recommended maintenance schedule and guidelines. Some maintenance tasks may include changing seals, replacing filters, inspecting and lubricating bearings, and monitoring performance parameters. Proper maintenance can prevent costly breakdowns, extend the pump’s service life, and minimize unexpected repair expenses.

4. Spare Parts and Consumables:

When budgeting for screw vacuum pumps, it’s important to consider the cost of spare parts and consumables. Over time, certain components of the pump may require replacement, such as seals, gaskets, filters, or lubricants. The availability and cost of these spare parts can vary depending on the pump model and manufacturer. It’s advisable to inquire about the availability, pricing, and expected lifespan of consumables when purchasing the pump and factor these costs into the overall budget.

5. Operational Downtime:

Operational downtime can have significant cost implications for any industrial process. When a screw vacuum pump requires maintenance, repair, or replacement, it may result in downtime, leading to production interruptions, decreased efficiency, and potential revenue loss. Therefore, it’s important to consider the reliability, serviceability, and availability of technical support when choosing a screw vacuum pump. Opting for reputable manufacturers with a track record of providing reliable products and responsive customer support can help minimize operational downtime and mitigate associated costs.

6. Lifecycle Cost Analysis:

When evaluating the cost considerations of screw vacuum pumps, it’s beneficial to conduct a lifecycle cost analysis. This analysis takes into account not only the initial purchase cost but also the long-term operational costs, maintenance expenses, energy consumption, and expected service life of the pump. By considering the total cost of ownership over the pump’s lifespan, including factors like efficiency, reliability, and maintenance requirements, it becomes easier to assess the cost-effectiveness of different pump options and make informed purchasing decisions.

7. Warranty and After-Sales Support:

Considering the warranty and after-sales support offered by the pump manufacturer is essential. A comprehensive warranty can provide cost protection against potential defects or premature failures. Additionally, reliable after-sales support, technical assistance, and readily available spare parts can contribute to minimizing downtime, reducing repair costs, and ensuring the long-term performance of the screw vacuum pump.

In summary, the cost considerations when purchasing and maintaining screw vacuum pumps include the initial purchase cost, energy consumption, maintenance and service expenses, spare parts and consumables, operational downtime, lifecycle cost analysis, and warranty and after-sales support. By carefully evaluating these factors and assessing the specific needs of the application, businesses can make informed decisions to optimize cost-effectiveness and achieve reliable vacuum pump performance.

screw vane pump

Can screw vacuum pumps be used for vacuum packaging and sealing processes?

Yes, screw vacuum pumps can be used for vacuum packaging and sealing processes. Screw vacuum pumps offer several advantages that make them suitable for these applications. Here’s a detailed explanation:

1. Efficient Evacuation:

Screw vacuum pumps are known for their high pumping speed, which allows them to quickly evacuate the packaging chamber. By removing air and other gases from the packaging environment, screw vacuum pumps create the necessary vacuum conditions for packaging and sealing processes.

2. Consistent Vacuum Levels:

Screw vacuum pumps are capable of maintaining consistent vacuum levels throughout the packaging and sealing process. This is important to ensure reliable and uniform packaging results. The stable vacuum levels achieved by screw vacuum pumps help preserve product quality, extend shelf life, and prevent spoilage or degradation of packaged goods.

3. Control and Automation:

Screw vacuum pumps can be easily integrated into packaging and sealing systems, allowing for precise control and automation of the vacuum process. They can be equipped with sensors, controllers, and programmable logic controllers (PLCs) to monitor and adjust the vacuum levels, packaging parameters, and sealing operations. This enables efficient and repeatable packaging processes.

4. Versatility:

Screw vacuum pumps are versatile and can handle a wide range of packaging materials, including flexible pouches, bags, trays, and rigid containers. They can accommodate different sizes and shapes of packaging, making them suitable for various industries such as food and beverage, pharmaceuticals, electronics, and consumer goods.

5. Oil-Free Operation:

Many screw vacuum pumps are designed to operate without the use of lubricating oil or fluids. This oil-free operation eliminates the risk of oil contamination in the packaging process, making them particularly suitable for applications where cleanliness and hygiene are crucial, such as in the food industry or medical packaging.

6. Reliability and Durability:

Screw vacuum pumps are known for their robust construction and reliable performance. They are designed to handle continuous operation and can withstand the demanding conditions of packaging and sealing processes, including frequent start-stop cycles and exposure to moisture, dust, or other contaminants.

7. Cost-Effectiveness:

Using screw vacuum pumps for vacuum packaging and sealing processes can be cost-effective in the long run. They offer energy-efficient operation, low maintenance requirements, and long service life, resulting in reduced operating costs and improved productivity.

In summary, screw vacuum pumps are well-suited for vacuum packaging and sealing processes. Their efficient evacuation capabilities, ability to maintain consistent vacuum levels, control and automation features, versatility, oil-free operation, reliability, and cost-effectiveness make them a valuable choice for a wide range of industries that require vacuum packaging and sealing of products.

screw vane pump

What is a screw vacuum pump, and how does it operate?

A screw vacuum pump is a type of positive displacement vacuum pump that utilizes two or more intermeshing screws to create a vacuum by trapping and transporting gas or vapor from the inlet to the outlet of the pump. It operates based on the principle of volumetric compression.

The basic components of a screw vacuum pump include rotors (screws), a housing, and inlet and outlet ports. The rotors are typically helical in shape and have precise screw profiles. They are mounted on parallel shafts within the pump housing. As the rotors rotate, the intermeshing screws create sealed cavities or “pockets” between the rotor lobes and the housing.

The operation of a screw vacuum pump typically involves the following steps:

  1. Inlet Stage: At the beginning of the pump cycle, the rotors start rotating. As the cavity between the rotor lobes and the housing passes the inlet port, gas or vapor is drawn into the cavity. The volume of the cavity expands, creating a low-pressure zone at the inlet.
  2. Compression Stage: As the rotors continue to rotate, the cavity moves towards the outlet port, gradually reducing its volume. This reduction in volume compresses the gas or vapor trapped within the cavity, causing its pressure to increase.
  3. Outlet Stage: Finally, when the cavity reaches the outlet port, the compressed gas or vapor is discharged from the pump, and the cycle repeats.

It is important to note that screw vacuum pumps can operate with either dry or liquid seals. Dry screw vacuum pumps rely on tight clearances between the rotors and the housing to create an effective seal, while liquid-sealed screw vacuum pumps use a liquid sealant to prevent gas leakage and provide lubrication between the rotor surfaces.

Screw vacuum pumps offer several advantages in various applications:

  • High Efficiency: Screw vacuum pumps can achieve high volumetric efficiency due to their positive displacement design, enabling them to handle large volumes of gas or vapor efficiently.
  • Continuous Operation: These pumps are capable of continuous operation, making them suitable for demanding industrial processes requiring sustained vacuum levels.
  • Reliability: Screw vacuum pumps are known for their reliability and robust construction, making them suitable for harsh operating conditions.
  • Low Noise Levels: Compared to other types of vacuum pumps, screw vacuum pumps often produce lower noise levels during operation.
  • Wide Range of Applications: Screw vacuum pumps find applications in various industries, including chemical processing, pharmaceuticals, food and beverage, wastewater treatment, and more.

In summary, a screw vacuum pump is a positive displacement pump that utilizes intermeshing screws to create a vacuum by trapping and compressing gas or vapor. Its operation involves drawing gas into the cavity, compressing it, and then discharging it. Screw vacuum pumps offer high efficiency, reliability, and suitability for a wide range of applications, making them a popular choice in many industries.

China OEM Dvp-180 4kw 181m3/H Petrochemical Pharmaceutical Industry Variable Pitch Dry Screw Vacuum Pump   vacuum pump electricChina OEM Dvp-180 4kw 181m3/H Petrochemical Pharmaceutical Industry Variable Pitch Dry Screw Vacuum Pump   vacuum pump electric
editor by Dream 2024-04-19

China wholesaler LG/Lgv Series Dry Screw Vacuum Pump Lgv-720 vacuum pump engine

Product Description

 

Product Description

Dry screw vacuum pump, is the use of a pair of screw, made in the pump shell synchronous high-speed reverse rotation of the effects of the suction and exhaust and suction device, 2 screw fine dynamic balancing correction, and is supported by bearings, is installed in the pump shell, between screw and screw has a certain gap, so the pump work, no friction between each other, smooth running, low noise, Working chamber without lubricating oil, therefore, dry screw pump can remove a lot of steam and a small amount of dust gas occasions, higher limit vacuum, lower power consumption, energy saving, maintenance-free and other advantages.Dry Oil-Free Air Cooling Screw Vacuum Pump ,This is an advanced and widely used vacuum pump at present, It is 1 of the best-selling products of our company.
 It adopts explosion-proof motor with high configuration, It has the characteristics of low noise, no oil and pollution, clean and high vacuum, simple and convenient use, operation and maintenance, Widely used in many industries, For example, oil and gas recovery, vacuum coating, biomedicine, food processing, single crystal furnace, vacuum forming, vacuum melting, electronic photovoltaic, semiconductor synthesis and many other industries are used.
The dry oil-free screw vacuum pump produced by our company is divided into air cooling and water cooling according to the extraction rate, and there are many models for you to choose.

Our Advantages

There is no medium in the working chamber, which can obtain a clean vacuum.
. No clearance between rotating parts, high speed operation, small overall volume.

There is no compression in the gas, suitable for extraction of coagulable gas.

Can remove a lot of steam and a small amount of dust gas occasions.
. High vacuum, the ultimate vacuum up to 1 Pa.

Screw material is high strength special material, material density, wear resistance, stable performance.

No friction rotating parts, low noise.
. Simple structure, convenient maintenance.
Wider range of use: corrosive environment can be used.

No oil consumption, no water.

Pump gas directly discharged from the pump body, no pollution of water, no environmental pressure, more convenient gas recovery.

It can be composed of oil-free unit with Roots pump and molecular pump.

 

Typical Use

——Oil and gas recovery.    ——Biological medicine ——Food Processing —— Single crystal furnace
——Vacuum forming ——Vacuum flame refining ——Electronic photovoltaic. ——Semiconductor synthesis

Product Parameters

 Air cooling   Dry screw vacuum pump

Type
(Air cooled series)
 Basic parameters 
Pumping speed
(m3/h)
Presure limit(Pa)  Power (kW)  revolution (rpm) Inlet caliber
(mm)
outlet caliber (mm) Pump head weight
(kg)
noise dB(A) Overall dimension
(length*width*height)
(mm)
LG-10 10 ≤5 0.75 2730 KF16 KF16 30 ≤ 72 655x260x285
LG-20 20 ≤5 1.1 2840 KF25 KF25 55 ≤72 720x305x370
LG-50 50 ≤10 2.2 2850 KF40 KF40 90 ≤75 920x350x420
LG-70 70 ≤30 3 2850 KF40 KF40 110 ≤75 910x390x460
LG-90 90 ≤30 4 2870 KF50 KF50 125 ≤80 1000x410x495

 

Water cooling Dry screw vacuum pump

Type                                                                             Basic parameters
Pumping speed
m3/h
Presure limit(Pa)  Power (kW)  revolution (rpm) Inlet caliber
mm
outlet caliber mm Cooling water volume
L/min
noise dB(A) Overall dimension
(length*width*height)
mm
LGV-180 180 5 4 2900 40 40 2 < 78 1157x375x734
LGV-250 250 5 5.5 2900 50 40 5.5 <78 1462x417x820
LGV-360 360 5 7.5 2900 50 40 4 W78 1462x455x820
LGV-540 540 5 11 2900 65 50 8 W80 1578x543x860
LGV-720 720 5 15 2900 80 65 10 <80 1623x562x916
LGV-1100 1100 5 22 2900 100 80 14 w 80 1866x598x1050
LG V-1800 1800 5 37 2900 150 100 20 w 80 2092×951 x 1150

Characteristic Curve

 Air cooling   Dry screw vacuum pump

Water cooling Dry screw vacuum pump

Detailed Photos

Vacuum pumps are used in oiling machinesVacuum pumps are used in chemical plants

General Manager Speech

Deeply cultivate the vacuum technology, and research,develop and manufacture the vacuum equipment to provide the best solution in the vacuum field and make the vacuum application easier.

Company Profile

ZheJiang Kaien Vacuum Technology Co., Ltd. is a high-tech enterprise integrating R & D, production and operation of vacuum equipment. The company has strong technical force, excellent equipment and considerate after-sales service. The product manufacturing process is managed in strict accordance with IS09001 quality system. It mainly produces and sells screw vacuum pump, roots pump, claw vacuum pump, runoff vacuum pump, scroll pump, water ring vacuum pump, vacuum unit and other vacuum systems.

 New plant plHangZhou

The company’s products have been for a number of food, medicine, refrigeration, drying plants and a number of transformer related equipment manufacturers for vacuum equipment. The products are widely used in vacuum drying and dehydration, kerosene vapor phase drying, vacuum impregnation, vacuum metallurgy, vacuum coating, vacuum evaporation, vacuum concentration, oil and gas recovery, etc.
High precision machining equipment

The company cooperates with many scientific research institutions and universities, such as ZheJiang University, China University of petroleum, ZheJiang Institute of mechanical design, etc.with colleges and universities to research and develop core technologies, and owns dozens of independent intellectual property patents.Our technology is leading, the product quality is stable, the product has a good reputation in China’s domestic market, is sold all over the country, and is exported to Europe, America, Africa, the Middle East and Southeast Asia,We adhering to the basic tenet of quality, reputation and service, the company takes leading-edge technology of vacuum pump as its own responsibility, and wholeheartedly serves customers of vacuum equipment application in various industries with rigorous working attitude and professional working style

Product quality wins consumer cooperationIn shipment ISO 9001

Welcome to send your needs, we will provide you with the best service,

provide the greatest help!!! 

 

/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Warranty: One Year
Oil or Not: Oil Free
Structure: Screw
Exhauster Method: Entrapment Vacuum Pump
Vacuum Degree: High Vacuum
Work Function: Mainsuction Pump
Customization:
Available

|

screw vane pump

Are there environmentally friendly options for screw vacuum pumps?

Yes, there are environmentally friendly options available for screw vacuum pumps. Here’s a detailed explanation of the eco-friendly features and considerations associated with screw vacuum pumps:

1. Oil-Free Operation:

One of the key environmentally friendly features of screw vacuum pumps is their ability to operate without the use of oil. Traditional vacuum pumps, such as rotary vane pumps or liquid ring pumps, often require oil for lubrication and sealing. However, oil-free screw vacuum pumps eliminate the need for oil, resulting in cleaner and more environmentally friendly operation. Oil-free pumps can be particularly beneficial in applications where the pumped gases come into direct contact with the process or need to remain free from oil contamination.

2. Reduced Emissions:

Screw vacuum pumps contribute to reduced emissions compared to certain other types of pumps. By eliminating oil from the operation, there is no risk of oil carryover or vapor emissions that could adversely affect the environment. This is especially important in applications where the pumped gases contain volatile compounds, as oil-free screw vacuum pumps help prevent the release of harmful substances into the atmosphere. Additionally, screw vacuum pumps with built-in gas and vapor ballast options can further reduce emissions by facilitating the extraction of condensable vapors and preventing their release into the environment.

3. Energy Efficiency:

Energy efficiency is a crucial factor in environmentally friendly operation. Screw vacuum pumps are known for their high efficiency, which translates into reduced energy consumption. By minimizing power requirements, energy-efficient screw vacuum pumps help conserve energy and lower greenhouse gas emissions. Choosing pumps with advanced control systems, variable speed drives, or frequency converters can further enhance energy efficiency by allowing precise control and optimization of pump performance based on demand.

4. Noise Reduction:

Screw vacuum pumps often have quieter operation compared to certain other types of pumps. The design of screw pumps, with balanced rotors and reduced internal clearances, helps minimize noise and vibration. Reduced noise levels not only contribute to a more comfortable and quieter working environment but also have positive environmental implications by minimizing noise pollution in surrounding areas.

5. Long Service Life and Durability:

Screw vacuum pumps are typically built with durable materials and have a robust design, resulting in a long service life. Prolonged equipment lifespan reduces the need for frequent replacements, minimizing waste generation and the environmental impact of manufacturing new pumps. Additionally, the durability of screw vacuum pumps translates into fewer maintenance requirements and less material consumption over time.

6. Waste Management:

When it comes to waste management, screw vacuum pumps offer advantages such as reduced oil disposal requirements. Unlike oil-sealed pumps that require regular oil changes and proper disposal of used oil, oil-free screw vacuum pumps eliminate this waste stream. This simplifies waste management processes and reduces the potential environmental hazards associated with oil handling and disposal.

7. Compliance with Environmental Regulations:

Many screw vacuum pump manufacturers prioritize environmental responsibility and design their products to comply with relevant environmental regulations and standards. These may include requirements for energy efficiency, emissions control, noise levels, and material restrictions. By choosing pumps from reputable manufacturers that prioritize environmental considerations, users can ensure the equipment meets or exceeds the necessary environmental compliance requirements.

In summary, environmentally friendly options for screw vacuum pumps include oil-free operation, reduced emissions, energy efficiency, noise reduction, long service life and durability, waste management advantages, and compliance with environmental regulations. By opting for these eco-friendly features, industries can minimize their environmental footprint and contribute to sustainable practices.

screw vane pump

What are the maintenance and servicing requirements for screw vacuum pumps?

Screw vacuum pumps require regular maintenance and servicing to ensure optimal performance, reliability, and longevity. Here’s a detailed explanation of the typical maintenance and servicing requirements for screw vacuum pumps:

1. Regular Inspections:

Perform regular visual inspections of the screw vacuum pump to check for any signs of wear, damage, or leaks. Inspect the pump, motor, and associated components for loose connections, worn-out parts, or abnormal vibrations. Ensure that all safety features and interlocks are functioning correctly.

2. Lubrication:

If the screw vacuum pump is equipped with lubrication points, follow the manufacturer’s guidelines for lubrication intervals and the type of lubricant to use. Proper lubrication helps reduce friction, wear, and heat generation, ensuring smooth operation and extending the life of the pump.

3. Cleaning and Filtration:

Keep the screw vacuum pump and its surrounding area clean and free from debris, dust, or contaminants that can affect its performance. Regularly clean or replace air filters to prevent clogging and maintain proper airflow. Clean the pump’s exterior surfaces using suitable cleaning agents and methods recommended by the manufacturer.

4. Belt and Pulley Maintenance:

If the screw vacuum pump is belt-driven, inspect the condition of the belts and pulleys regularly. Check for any signs of wear, cracks, or belt tension issues. Adjust or replace belts as necessary to maintain proper tension and alignment, ensuring efficient power transmission.

5. Cooling System Maintenance:

If the screw vacuum pump is equipped with a cooling system, regularly check and maintain the cooling components. Clean or replace cooling fins, check coolant levels, and ensure proper circulation to prevent overheating and ensure optimal cooling efficiency.

6. Seal Inspection and Replacement:

Inspect the seals, gaskets, and O-rings of the screw vacuum pump regularly. Look for signs of wear, leaks, or degradation. Replace worn-out or damaged seals promptly to maintain proper sealing and prevent air leaks that can impact the pump’s performance.

7. Vibration and Noise Monitoring:

Monitor the vibration and noise levels during the operation of the screw vacuum pump. Excessive vibration or unusual noise can indicate a mechanical problem or misalignment. Take corrective measures if required to minimize vibration and noise, ensuring smooth and quiet operation.

8. Scheduled Maintenance:

Follow the manufacturer’s recommended maintenance schedule for the screw vacuum pump. This may include periodic servicing, such as changing of oil or fluids, inspection and replacement of internal components, and performance checks. Adhering to the scheduled maintenance helps prevent unexpected breakdowns and ensures the pump operates at its best.

9. Expert Servicing:

For complex maintenance or repairs, it is advisable to seek the assistance of qualified technicians or service professionals with experience in screw vacuum pumps. They have the expertise and knowledge to diagnose and resolve issues effectively, ensuring proper maintenance and servicing of the pump.

10. Training and Documentation:

Ensure that the personnel responsible for the screw vacuum pump’s maintenance and servicing are adequately trained on the proper procedures, safety guidelines, and best practices. Maintain comprehensive documentation, including service records, manuals, and relevant technical information for reference and future servicing needs.

In summary, regular inspections, lubrication, cleaning, filtration, belt and pulley maintenance, cooling system maintenance, seal inspection and replacement, vibration and noise monitoring, scheduled maintenance, expert servicing, training, and documentation are important aspects of maintaining and servicing screw vacuum pumps. By following these guidelines and the manufacturer’s recommendations, the pump can operate efficiently, minimize downtime, and have an extended service life.

screw vane pump

Can screw vacuum pumps handle both dry and wet processes?

Yes, screw vacuum pumps are capable of handling both dry and wet processes, making them versatile for a wide range of applications. The ability to handle both types of processes depends on the specific design and configuration of the screw vacuum pump, as well as any additional features or accessories that may be incorporated. Here’s a detailed explanation:

Dry Processes:

In dry processes, the screw vacuum pump operates without the presence of liquid or moisture. Dry screw vacuum pumps rely on tight clearances between the rotors (screws) and the pump housing to create an effective seal. This seal prevents gas or vapor from leaking back into the inlet or escaping to the atmosphere. The absence of liquid or moisture in the process stream helps maintain the integrity of the pump’s sealing mechanism and ensures reliable operation. Dry screw vacuum pumps are commonly used in applications where the process gas or vapor is predominantly dry and free from liquid carryover or condensable vapors.

Wet Processes:

In wet processes, the screw vacuum pump encounters liquids or moisture along with gas or vapor. These liquids can be in the form of condensable vapors, liquid carryover, or entrained liquid droplets. To handle wet processes, screw vacuum pumps may incorporate additional features or accessories to prevent damage, maintain performance, and ensure reliable operation. Some common methods used to handle wet processes include:

  • Liquid Seals: Certain screw vacuum pump designs utilize a liquid sealant to create a barrier between the process gas or vapor and the pump’s internal components. The liquid sealant helps prevent gas leakage, provides lubrication, and assists in sealing the clearances between the rotors and housing. This feature enables the pump to handle wet processes effectively by containing the liquid and maintaining proper sealing.
  • Separators and Filters: Screw vacuum pumps can be equipped with separators and filters to separate liquid droplets or solid particles from the gas or vapor stream. These components help protect the pump from potential damage caused by liquid or solid contamination and ensure the efficient operation of the pump.
  • Specific Design Considerations: Screw vacuum pump manufacturers may incorporate design modifications to enhance the pump’s ability to handle wet processes. This can include optimized clearances, corrosion-resistant materials, and specialized coatings or treatments to protect against liquid or moisture exposure.

It’s important to note that the specific capabilities of a screw vacuum pump in handling wet processes may vary between different models and manufacturers. Therefore, when selecting a screw vacuum pump for a wet process application, it is advisable to consult the manufacturer’s specifications, recommendations, and any additional guidance provided to ensure the pump is suitable for the intended process conditions.

In summary, screw vacuum pumps can handle both dry and wet processes, although the specific design and features of the pump may need to be considered for optimal performance in wet applications. Dry screw vacuum pumps are suitable for predominantly dry processes, while wet processes may require the use of liquid seals, separators, filters, or specialized design considerations to handle the presence of liquids or moisture effectively.

China wholesaler LG/Lgv Series Dry Screw Vacuum Pump Lgv-720   vacuum pump engine	China wholesaler LG/Lgv Series Dry Screw Vacuum Pump Lgv-720   vacuum pump engine
editor by Dream 2024-04-19

China Best Sales High Pressure Oil Less Vacuum Pump Dry Run Vacuum Pump CNC Screw Vacuum Pump vacuum pump design

Product Description

                                       EXTERIOR DESIGN                                                                INTERIOR DESIGN

ZheJiang CHINAMFG Machinery Manufacturing Co. , Ltd. is located in HangZhou, ZheJiang .CHINAMFG is a comprehensive screw air compressor

manufacturer that engaged in R & D, design, production and sales. It has a plant of 20,000 square meters, including a large production workshop,

a comprehensive first-class exhibition hall and a testing laboratory.

CHINAMFG has excellent mechanical engineering designers, an experienced staff team and a professional management team. The production

concept focuses on energy-saving and is committed to perfecting and improving the technological process in order to get the core technology

of super frequency energy-saving, achieving the characteristics of mute, durability, power saving and safety.

The company has 9 series of products with multiple models. Including Fixed speed air compressor, PM VSD air compressor, PM VSD

two-stage air compressor, 4-in-1 air compressor, Oil free water lubrcating air compressor, Diesel portable screw air compressor, Electric

portable screw air compressor, Air dryer, Adsorption machine and the matching spare parts. CHINAMFG adheres to the business philosophy of

cooperation and mutual benefit to provide a one-stop service for every customer!

CHINAMFG air compressors not only cover the domestic market but also are exported to more than 20 countries and regions such as South

Africa, Australia, Thailand, Russia, Argentina, Canada and so on. CHINAMFG products have won a good reputation from users for their excellent

quality and style. The company has always adhered to the concept of quality first, service first and dedication to providing every customer with

excellent products and meticulous after-sales service!

CHINAMFG warmly welcome customers to visit our factory and establish a wide range of cooperation!

Frequency Asked Question:

Q1: Are you factory or trade company?  
A1: We are factory.

Q2: What the exactly address of your factory? 
A2: Our Factory is Located in Xihu (West Lake) Dis. CountyHangZhou CityZheJiang  Province, China.

Q3: Will you provide spare parts of your products? 
A3: Yes, We provide all parts to customer, so you can do repair or maintenance without trouble.

Q4: Can you accept OEM orders? 
A4: Yes, with professional design team, OEM orders are highly welcome.

Q5: How long will you take to arrange production?
A5: Immediate delivery for stock products.380V 50HZ we can delivery the goods within 3-15 days. Other voltage or other color we will delivery within 25-30 days.

Q6: Warranty terms of your machine?
A6Two years warranty for the machine and technical support always according to your needs.

Q7: Can you provide the best price?
A7:According to your order, we will provide you the best price. /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

After-sales Service: 24 Hours
Warranty: 1 Year, 2 Year
Lubrication Style: Lubricated
Cooling System: Air Cooling
Power Source: AC Power
Cylinder Position: Horizontal
Customization:
Available

|

screw vane pump

What are the cost considerations when purchasing and maintaining screw vacuum pumps?

When purchasing and maintaining screw vacuum pumps, several cost considerations come into play. Here’s a detailed explanation of the key factors to consider:

1. Initial Purchase Cost:

The initial purchase cost of a screw vacuum pump is an important consideration. The cost can vary depending on factors such as the pump’s capacity, specifications, features, and the manufacturer. Generally, screw vacuum pumps tend to have a higher upfront cost compared to some other types of vacuum pumps. However, it’s essential to evaluate the long-term benefits and performance advantages offered by screw vacuum pumps to determine their overall value for the specific application.

2. Energy Consumption:

Energy consumption is a significant ongoing cost associated with operating screw vacuum pumps. While screw vacuum pumps are known for their high efficiency, it’s important to consider the power requirements and energy consumption of the specific pump model. Opting for energy-efficient screw vacuum pumps can result in long-term cost savings by reducing electricity bills and minimizing the environmental impact. Additionally, pumps equipped with advanced control systems or variable speed drives allow for better energy optimization and can further enhance cost-effectiveness.

3. Maintenance and Service:

Maintenance and service costs are important considerations throughout the lifecycle of a screw vacuum pump. Regular maintenance is necessary to ensure optimal performance, reliability, and longevity of the equipment. The specific maintenance requirements and associated costs can vary depending on the pump model and manufacturer. It’s crucial to follow the manufacturer’s recommended maintenance schedule and guidelines. Some maintenance tasks may include changing seals, replacing filters, inspecting and lubricating bearings, and monitoring performance parameters. Proper maintenance can prevent costly breakdowns, extend the pump’s service life, and minimize unexpected repair expenses.

4. Spare Parts and Consumables:

When budgeting for screw vacuum pumps, it’s important to consider the cost of spare parts and consumables. Over time, certain components of the pump may require replacement, such as seals, gaskets, filters, or lubricants. The availability and cost of these spare parts can vary depending on the pump model and manufacturer. It’s advisable to inquire about the availability, pricing, and expected lifespan of consumables when purchasing the pump and factor these costs into the overall budget.

5. Operational Downtime:

Operational downtime can have significant cost implications for any industrial process. When a screw vacuum pump requires maintenance, repair, or replacement, it may result in downtime, leading to production interruptions, decreased efficiency, and potential revenue loss. Therefore, it’s important to consider the reliability, serviceability, and availability of technical support when choosing a screw vacuum pump. Opting for reputable manufacturers with a track record of providing reliable products and responsive customer support can help minimize operational downtime and mitigate associated costs.

6. Lifecycle Cost Analysis:

When evaluating the cost considerations of screw vacuum pumps, it’s beneficial to conduct a lifecycle cost analysis. This analysis takes into account not only the initial purchase cost but also the long-term operational costs, maintenance expenses, energy consumption, and expected service life of the pump. By considering the total cost of ownership over the pump’s lifespan, including factors like efficiency, reliability, and maintenance requirements, it becomes easier to assess the cost-effectiveness of different pump options and make informed purchasing decisions.

7. Warranty and After-Sales Support:

Considering the warranty and after-sales support offered by the pump manufacturer is essential. A comprehensive warranty can provide cost protection against potential defects or premature failures. Additionally, reliable after-sales support, technical assistance, and readily available spare parts can contribute to minimizing downtime, reducing repair costs, and ensuring the long-term performance of the screw vacuum pump.

In summary, the cost considerations when purchasing and maintaining screw vacuum pumps include the initial purchase cost, energy consumption, maintenance and service expenses, spare parts and consumables, operational downtime, lifecycle cost analysis, and warranty and after-sales support. By carefully evaluating these factors and assessing the specific needs of the application, businesses can make informed decisions to optimize cost-effectiveness and achieve reliable vacuum pump performance.

screw vane pump

Can screw vacuum pumps be used in pharmaceutical and chemical industries?

Yes, screw vacuum pumps can be used in both the pharmaceutical and chemical industries. Here’s a detailed explanation of their applications and benefits in these industries:

Pharmaceutical Industry:

In the pharmaceutical industry, screw vacuum pumps play a crucial role in various processes, including:

1. Drying and Dehydration: Screw vacuum pumps are used for drying pharmaceutical products, such as tablets, powders, and granules. They create a vacuum environment that facilitates the removal of moisture, ensuring product stability and extending shelf life.

2. Distillation and Evaporation: Screw vacuum pumps are employed in distillation and evaporation processes to remove solvents, concentrate solutions, or separate components. They enable precise control over temperature and pressure conditions, ensuring efficient and high-quality separation of pharmaceutical compounds.

3. Filtration and Sterilization: Screw vacuum pumps are utilized in filtration systems to create suction for the filtration of pharmaceutical liquids and solutions. They are also employed in sterilization processes, such as autoclaves, where they help create the necessary vacuum conditions for steam sterilization.

4. Freeze Drying: Screw vacuum pumps are commonly used in freeze drying, also known as lyophilization, which is a widely used method for preserving sensitive pharmaceutical products. They facilitate the removal of water from frozen products under vacuum, preserving their structure, stability, and efficacy.

Chemical Industry:

In the chemical industry, screw vacuum pumps find applications in various processes, including:

1. Vacuum Distillation: Screw vacuum pumps are employed in vacuum distillation processes to separate and purify chemical compounds based on their boiling points. They create a vacuum environment that lowers the boiling points of the substances, enabling more efficient separation and reducing the energy required for the process.

2. Solvent Recovery: Screw vacuum pumps are used for solvent recovery in chemical production. They help remove solvents from mixtures, allowing for their reuse and reducing waste and environmental impact.

3. Vacuum Filtration: Screw vacuum pumps are utilized in vacuum filtration systems to facilitate the separation of solids from liquids or gases. They create suction that aids in the filtration process, improving efficiency and throughput.

4. Reactor Applications: Screw vacuum pumps are employed in various reactor applications, including creating vacuum conditions for chemical reactions that require low pressure or removing byproducts or unreacted gases from the reaction vessel.

Benefits:

There are several benefits of using screw vacuum pumps in the pharmaceutical and chemical industries:

1. Efficiency: Screw vacuum pumps offer high pumping speeds, allowing for rapid evacuation and faster processing times in pharmaceutical and chemical processes.

2. Control: Screw vacuum pumps can be easily integrated into automated systems, allowing for precise control and adjustment of vacuum levels, temperature, and other process parameters.

3. Versatility: Screw vacuum pumps can handle a wide range of chemical compounds and pharmaceutical products, making them suitable for diverse applications in these industries.

4. Reliability: Screw vacuum pumps are known for their robust construction and reliable performance, ensuring continuous operation and minimizing downtime.

5. Oil-Free Operation: Many screw vacuum pumps are designed for oil-free operation, which is essential in pharmaceutical and chemical applications where contamination from lubricating oil must be avoided.

6. Compliance: Screw vacuum pumps can meet the stringent requirements and standards of the pharmaceutical and chemical industries, including Good Manufacturing Practice (GMP) guidelines and safety regulations.

In summary, screw vacuum pumps are well-suited for applications in the pharmaceutical and chemical industries. Their efficiency, control capabilities, versatility, reliability, oil-free operation, and compliance with industry standards make them valuable assets in various processes, ranging from drying and distillation to filtration and sterilization.

screw vane pump

What are the different types of screw vacuum pumps available in the market?

There are several different types of screw vacuum pumps available in the market, each with its own design and operating characteristics. Here are some of the commonly used types of screw vacuum pumps:

1. Single-Stage Screw Vacuum Pumps:

Single-stage screw vacuum pumps consist of a single pair of intermeshing screws (rotors) that rotate to create vacuum. These pumps are commonly used for low to medium vacuum applications and can achieve a wide range of vacuum levels. Single-stage screw vacuum pumps are known for their compact design, high pumping speed, and efficient operation.

2. Multi-Stage Screw Vacuum Pumps:

Multi-stage screw vacuum pumps consist of multiple stages, each with its own pair of intermeshing screws. The gas or vapor is sequentially compressed and evacuated through multiple stages, allowing for higher vacuum levels to be achieved. Multi-stage screw vacuum pumps are suitable for applications requiring deeper vacuum levels, such as in chemical processing, power generation, and semiconductor manufacturing.

3. Dry Screw Vacuum Pumps:

Dry screw vacuum pumps operate without the use of any lubricating fluid in the pumping chamber. These pumps rely on tight clearances between the rotors and housing to create a seal and achieve vacuum. Dry screw vacuum pumps are preferred in applications where oil contamination or the presence of lubricating fluids is undesirable, such as in the electronics, pharmaceutical, and food processing industries.

4. Liquid Ring Screw Vacuum Pumps:

Liquid ring screw vacuum pumps combine the principles of liquid ring vacuum pumps and screw vacuum pumps. These pumps use a liquid ring as the sealing and compression medium, while the screws provide the positive displacement action. Liquid ring screw vacuum pumps are known for their capability to handle wet processes and carryover of liquid or condensable vapors. They are commonly used in applications where both liquid and gas handling is required, such as in chemical processing, wastewater treatment, and oil refining.

5. Variable Pitch Screw Vacuum Pumps:

Variable pitch screw vacuum pumps feature rotors with varying helical pitches along their length. This design allows for better optimization of the compression process and improved efficiency. Variable pitch screw vacuum pumps are often used in applications that require a wide operating range and high efficiency, such as in semiconductor manufacturing, research laboratories, and vacuum coating processes.

6. Oil-Injected Screw Vacuum Pumps:

Oil-injected screw vacuum pumps utilize injected oil as a sealing and lubricating medium. The oil creates a seal between the rotors and housing and provides lubrication to minimize friction. These pumps are commonly used in industrial applications where a higher level of vacuum is required, such as in power plants, chemical processes, and central vacuum systems.

7. Oil-Free Screw Vacuum Pumps:

Oil-free screw vacuum pumps are designed to operate without the use of any lubricating oil or fluid. These pumps employ alternative methods, such as dry running or the use of non-contacting technologies, to achieve the necessary sealing and lubrication. Oil-free screw vacuum pumps are favored in applications where oil contamination is a concern, such as in electronics manufacturing, pharmaceutical production, and food processing.

These are just a few examples of the different types of screw vacuum pumps available in the market. The choice of the most suitable type depends on specific application requirements, desired vacuum levels, process conditions, and industry standards.

China Best Sales High Pressure Oil Less Vacuum Pump Dry Run Vacuum Pump CNC Screw Vacuum Pump   vacuum pump design		China Best Sales High Pressure Oil Less Vacuum Pump Dry Run Vacuum Pump CNC Screw Vacuum Pump   vacuum pump design
editor by Dream 2024-04-17

China supplier Dry Screw Vacuum Pump Can Be Used in Harsh Working Conditions, and Easy to Do Anti-Corrosion Treatment vacuum pump

Product Description

Product Description

Dry screw vacuum pump, is the use of a pair of screw, made in the pump shell synchronous high-speed reverse rotation of the effects of the suction and exhaust and suction device, 2 screw fine dynamic balancing correction, and is supported by bearings, is installed in the pump shell, between screw and screw has a certain gap, so the pump work, no friction between each other, smooth running, low noise, Working chamber without lubricating oil, therefore, dry screw pump can remove a lot of steam and a small amount of dust gas occasions, higher limit vacuum, lower power consumption, energy saving, maintenance-free and other advantages.

Our Advantages

There is no medium in the working chamber, which can obtain a clean vacuum.
. No clearance between rotating parts, high speed operation, small overall volume.

There is no compression in the gas, suitable for extraction of coagulable gas.

Can remove a lot of steam and a small amount of dust gas occasions.
. High vacuum, the ultimate vacuum up to 1 Pa.

Screw material is high strength special material, material density, wear resistance, stable performance.

No friction rotating parts, low noise.
. Simple structure, convenient maintenance.
Wider range of use: corrosive environment can be used.

No oil consumption, no water.

Pump gas directly discharged from the pump body, no pollution of water, no environmental pressure, more convenient gas recovery.

It can be composed of oil-free unit with Roots pump and molecular pump.

 

Typical Use

——Oil and gas recovery.    ——Biological medicine ——Food Processing —— Single crystal furnace
——Vacuum forming ——Vacuum flame refining ——Electronic photovoltaic. ——Semiconductor synthesis

Product Parameters

Type                                                                             Basic parameters
Pumping speed
m3/h
Presure limit(Pa)  Power (kW)  revolution (rpm) Inlet caliber
mm
outlet caliber mm Cooling water volume
L/min
noise dB(A) Overall dimension
(length*width*height)
mm
LGV-180 180 5 4 2900 40 40 2 < 78 1157x375x734
LGV-250 250 5 5.5 2900 50 40 5.5 <78 1462x417x820
LGV-360 360 5 7.5 2900 50 40 4 W78 1462x455x820
LGV-540 540 5 11 2900 65 50 8 W80 1578x543x860
LGV-720 720 5 15 2900 80 65 10 <80 1623x562x916
LGV-1100 1100 5 22 2900 100 80 14 w 80 1866x598x1050
LG V-1800 1800 5 37 2900 150 100 20 w 80 2092×951 x 1150

Characteristic Curve

 

Detailed Photos

 

General Manager Speech

Deeply cultivate the vacuum technology, and research,develop and manufacture the vacuum equipment to provide the best solution in the vacuum field and make the vacuum application easier.

Company Profile

ZheJiang Kaien Vacuum Technology Co., Ltd. is a high-tech enterprise integrating R & D, production and operation of vacuum equipment. The company has strong technical force, excellent equipment and considerate after-sales service. The product manufacturing process is managed in strict accordance with IS09001 quality system. It mainly produces and sells screw vacuum pump, roots pump, claw vacuum pump, runoff vacuum pump, scroll pump, water ring vacuum pump, vacuum unit and other vacuum systems.

The company’s products have been for a number of food, medicine, refrigeration, drying plants and a number of transformer related equipment manufacturers for vacuum equipment. The products are widely used in vacuum drying and dehydration, kerosene vapor phase drying, vacuum impregnation, vacuum metallurgy, vacuum coating, vacuum evaporation, vacuum concentration, oil and gas recovery, etc.

The company cooperates with colleges and universities to research and develop core technologies, and owns dozens of independent intellectual property patents. Adhering to the basic tenet of quality, reputation and service, the company takes leading-edge technology of vacuum pump as its own responsibility, and wholeheartedly serves customers of vacuum equipment application in various industries with rigorous working attitude and professional working style.
 

 

/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Warranty: One Year
Oil or Not: Oil Free
Structure: Screw
Exhauster Method: Entrapment Vacuum Pump
Vacuum Degree: High Vacuum
Work Function: Mainsuction Pump
Customization:
Available

|

screw vane pump

Are there energy-efficient options for screw vacuum pumps?

Yes, there are energy-efficient options available for screw vacuum pumps. Here’s a detailed explanation of energy-efficient features and technologies that can be found in screw vacuum pumps:

1. Variable Frequency Drives (VFD):

Screw vacuum pumps equipped with Variable Frequency Drives (VFD) offer energy efficiency by allowing precise control of the pump’s rotational speed. VFDs adjust the motor speed according to the required vacuum level, resulting in reduced energy consumption compared to fixed-speed pumps. By matching the pump’s speed to the process demands, VFDs help optimize energy usage and minimize unnecessary energy losses.

2. High-Efficiency Motors:

Energy-efficient screw vacuum pumps often incorporate high-efficiency motors. These motors are designed to minimize energy losses and improve overall efficiency. High-efficiency motors typically comply with international efficiency standards, such as the International Electrotechnical Commission (IEC) standards or the National Electrical Manufacturers Association (NEMA) standards, and are classified with high efficiency ratings, such as IE3 or NEMA Premium.

3. Advanced Control Systems:

Modern screw vacuum pumps may feature advanced control systems that optimize energy consumption. These systems utilize intelligent algorithms to monitor and adjust the pump’s operation based on real-time process conditions. By continuously assessing the demand for vacuum and adapting the pump’s performance accordingly, advanced control systems help reduce energy waste and improve overall energy efficiency.

4. Energy Recovery Systems:

Some screw vacuum pumps are equipped with energy recovery systems that capture and utilize energy that would otherwise be wasted. These systems can include heat exchangers or energy regeneration units that repurpose excess heat from the pump’s operation. By utilizing this recovered energy for other processes, such as preheating or heating applications, energy recovery systems contribute to increased overall system efficiency.

5. Optimized Pump Design:

Manufacturers continuously work on optimizing the design of screw vacuum pumps to improve energy efficiency. This can involve reducing internal friction, optimizing rotor profiles, and minimizing leakage paths. These design enhancements aim to maximize the pump’s performance while minimizing energy losses, resulting in improved overall energy efficiency.

6. Energy Monitoring and Analysis:

Energy-efficient screw vacuum pumps often come with built-in energy monitoring and analysis features. These systems allow operators to monitor the energy consumption of the pump in real-time and analyze energy usage patterns. By identifying energy-intensive periods or inefficiencies, operators can make informed decisions to optimize the pump’s operation and further improve energy efficiency.

7. Energy Efficiency Certifications:

Energy-efficient screw vacuum pumps may carry energy efficiency certifications or labels, such as the ENERGY STAR® certification or the European Union’s Energy Efficiency Directive compliance. These certifications provide reassurance that the pump has undergone testing and meets specific energy efficiency criteria, providing confidence in its energy-saving capabilities.

In summary, energy-efficient options for screw vacuum pumps exist and incorporate features such as Variable Frequency Drives (VFD), high-efficiency motors, advanced control systems, energy recovery systems, optimized pump design, energy monitoring and analysis capabilities, and energy efficiency certifications. By utilizing these energy-efficient options, industries can reduce energy consumption, lower operating costs, and minimize their environmental impact.

screw vane pump

What safety features should be considered when operating screw vacuum pumps?

When operating screw vacuum pumps, it is important to consider several safety features to ensure the protection of personnel, equipment, and the surrounding environment. Here’s a detailed explanation of the safety features that should be considered:

1. Overpressure Protection:

Screw vacuum pumps should be equipped with overpressure protection mechanisms to prevent the system from exceeding safe pressure limits. This can include pressure relief valves or rupture discs that automatically release excess pressure to avoid equipment damage or catastrophic failures. It is essential to set the pressure relief devices at appropriate levels and regularly inspect and maintain them to ensure their proper functioning.

2. Emergency Stop Button:

An emergency stop button should be easily accessible near the screw vacuum pump or within the control panel. This allows operators to quickly shut down the pump in case of emergencies, such as equipment malfunction, safety hazards, or personnel injury. The emergency stop button should be clearly labeled, well-maintained, and tested regularly to ensure its effectiveness.

3. Motor and Drive Protections:

The motor and drive system of the screw vacuum pump should be equipped with safety features to prevent overheating, overloading, and electrical faults. This can include thermal overload protection, motor temperature sensors, current monitoring devices, and short-circuit protection mechanisms. These safety features help safeguard the integrity of the motor and drive system, reducing the risk of fire, electrical hazards, and equipment damage.

4. Vacuum Level Monitoring:

Monitoring the vacuum level is crucial for safe operation. Screw vacuum pumps should be equipped with vacuum gauges or sensors to provide real-time information on the vacuum level. This allows operators to ensure that the system is operating within the desired range and helps detect any abnormal conditions or leaks. Alarms or visual indicators can also be implemented to alert operators when the vacuum level deviates from the set parameters.

5. Cooling and Ventilation:

Screw vacuum pumps generate heat during operation, and adequate cooling and ventilation systems should be in place to prevent overheating. This can include fans, heat exchangers, or cooling fins to dissipate heat effectively. Proper ventilation should be ensured to prevent the accumulation of flammable or hazardous gases. It is important to regularly inspect the cooling and ventilation systems and clean or replace components as needed to maintain optimal performance and safety.

6. Isolation and Lockout/Tagout:

Isolation valves should be installed in the suction and discharge lines of screw vacuum pumps to allow for safe maintenance, repair, or shutdown procedures. Lockout/Tagout (LOTO) procedures should be followed when performing maintenance or service activities. This involves locking and tagging the energy sources, such as electrical power or compressed air, to prevent accidental startup or release of stored energy. Adequate training and awareness of LOTO procedures are essential for personnel safety.

7. Safety Signage and Labels:

Clear and visible safety signage and labels should be placed near the screw vacuum pump and control panel to provide important safety information, warnings, and operating instructions. This includes labels for emergency stop buttons, voltage ratings, hazardous areas, and safety precautions. Safety signs should comply with relevant standards and regulations and be regularly inspected to ensure their visibility and legibility.

8. Operator Training and PPE:

Proper training should be provided to operators working with screw vacuum pumps to ensure they understand the safe operating procedures, potential hazards, and emergency protocols. Operators should also wear appropriate personal protective equipment (PPE) such as safety glasses, gloves, and hearing protection, as required by the specific operating conditions and industry regulations.

In summary, several safety features should be considered when operating screw vacuum pumps. These include overpressure protection, emergency stop buttons, motor and drive protections, vacuum level monitoring, cooling and ventilation systems, isolation and lockout/tagout procedures, safety signage, operator training, and the use of personal protective equipment. Implementing these safety features helps mitigate risks, protect personnel and equipment, and maintain a safe working environment during screw vacuum pump operation.

screw vane pump

What are the typical applications of screw vacuum pumps in various industries?

Screw vacuum pumps find a wide range of applications across various industries due to their efficiency, reliability, and versatility. Here are some typical applications of screw vacuum pumps in different industries:

Chemical Processing:

  • Vacuum distillation and drying processes
  • Vacuum filtration and solvent recovery
  • Crystallization and evaporation systems
  • Chemical reactors and vacuum drying ovens

Pharmaceuticals:

  • Vacuum drying and freeze-drying of pharmaceutical products
  • Deaeration and degassing processes
  • Vacuum packaging and sealing
  • Purification and distillation of pharmaceutical compounds

Food and Beverage:

  • Deaeration and removal of dissolved gases in food and beverage products
  • Evaporation and concentration processes
  • Freeze drying and vacuum packaging
  • Vacuum cooling and drying of food products

Power Generation:

  • Steam condenser and turbine exhaust applications
  • Deaeration and vacuum systems in power plants
  • Vacuum distillation in the production of power plant chemicals
  • Transformer drying and impregnation

Electronics Manufacturing:

  • Vacuum drying and degassing of electronic components
  • Vacuum soldering and brazing processes
  • Thin film deposition and vacuum coating
  • Printed circuit board manufacturing

Wastewater Treatment:

  • Vacuum filtration and sludge dewatering
  • Vacuum degassing and deaeration of wastewater
  • Evaporation and concentration of wastewater streams

Environmental Applications:

  • Landfill gas recovery and treatment
  • Vacuum drying and deodorization in waste management
  • Vacuum systems for air pollution control

Other Industries:

  • Oil and gas industry for vapor recovery and gas processing
  • Automotive industry for vacuum metallurgy and component manufacturing
  • Textile industry for vacuum drying and deaeration of fabrics
  • Research and development laboratories for various scientific applications

These are just a few examples of the many applications of screw vacuum pumps in various industries. The versatility and reliability of screw vacuum pumps make them suitable for a wide range of vacuum-related processes, enabling enhanced productivity, improved product quality, and cost savings in diverse industrial settings.

China supplier Dry Screw Vacuum Pump Can Be Used in Harsh Working Conditions, and Easy to Do Anti-Corrosion Treatment   vacuum pump	China supplier Dry Screw Vacuum Pump Can Be Used in Harsh Working Conditions, and Easy to Do Anti-Corrosion Treatment   vacuum pump
editor by CX 2024-04-16

China Good quality 5PA 4kw 181m3/H No Leakage Variable Pitch Petrochemical Dry Screw Vacuum Pump supplier

Product Description

 

Working principle

The vacuum in dry screw pumps is created through 2 parallel-arranged screw rotors that rotate in opposite directions. These rotors trap the gas coming in through the inlet and deliver it to the gas discharge or pressure side. As the gas is getting compressed, there is no contact between the rotors. This does away with any need for the compression chamber to have any operating fluids or lubrication.
 The lubricant used to lubricate the gears and shaft seal is sealed in the gearbox by the shaft seal. The pump can be cooled either directly by circulating cooling water or by a cooling unit with fan and radiator.
The dry screw vacuum pump adopts a special rotor pitch design, compared with the ordinary rotor pitch design, reduce the energy consumption by about 30%, the temperature rise of the exhaust end is reduced by about 100 ºC, the reliability and stability of the operation of the product is greatly improved, can be suitable for any working conditions of vacuum.
The dry screw pumps can be widely used in solvent recovery, vacuum drying, concentration, crystallization, distillation and other processes in the chemical and pharmaceutical industries, vacuum extrusion and molding in the plastic and rubber industries, vacuum degassing in the metallurgical industry; vacuum degassing and drying in the solar energy, microelectronics, lithium battery and other industries.

Pump body and end caps:  high-strength cast iron.
Pump body and end caps:  high strength cast iron.
Screw rotor:                        ductile cast iron.
Anti-corrosion coating:        corrosion-resistant Hastelloy.
Synchronous gears:            alloy steel.
Radial lip seal:                     imported PTFE mixture or
                                            high-temperature resistant fluorine rubber;
Seal bushings:                    stainless steel surface covered with ceramic.

Flow chart

 

Main features

1. The screw rotor is designed with variable pitch structure, the ultimate vacuum can reach below 1Pa, which can meet all kinds of vacuum processing from atmosphere to high vacuum.
2. Oil free – Adapt to various special working conditions for reliable use.
3. It can operate reliably in the pressure range from atmosphere to several Pa.
4. No friction between moving parts, simple structure, lower operation and maintenance cost.
5. Nitrogen seal and composite seal design is optional, which has the benefit of good reliability, low cost of use, simple maintenance.
6. The rotor is dynamically balanced at high speed and the motor is connected by flange, with high concentricity, low vibration and low noise.
7. Hastelloy anti-corrosion coating is optional for rotor surface, condensable material is not easy to condense in the pump cavity, better corrosion resistance.
8. Compared with oil seal pump, liquid ring pump, there is no waste gas, no waste liquid, no waste oil emission, energy saving and environmental friendly.
It can be used alone or with Roots vacuum pump, air-cooled Roots vacuum pump, molecular vacuum pump, etc. to obtain an oil-free high vacuum system.

The benefit of dry screw vacuum pump compared to liquid ring vacuum pump:

    -Shorten the process cycle and improve production efficiency
    -Reduce water consumption
    -Save energy
    -Improve product quality
    -Can recover solvent by reducing the drying time of products
    -Reduce the cost of wastewater and waste gas treatment

A CASE in a pharmaceutical factory
Process introduction:The penicillin sodium salt solution is fed into the crystallization tank through vacuum. By steam heating, agitator stirring, and adding butanol, the water and butanol in the penicillin solution are pumped into the condenser and condensed into the liquid collecting tank, which can be reused.

Process requirements:
1. The volume of crystallization tank is 7.5m3, and about 4.5m3 penicillin solution is added in the process.
2. Before entering the crystallization tank, the water content of penicillin solution is about 20%, and after crystallization, the water content is required to be about 1%.
3. Vacuum feeding for 2h, then adding butanol for 30min, and then starting to crystallize. The process requires low temperature and fast speed, and the lower the temperature, the better the quality of penicillin. The shorter the reaction time, the better.
4. Vacuum degree requirements: the vacuum degree shall be kept above -0.097MPa. High vacuum degree can reduce the reaction temperature and shorten the reaction time.

The previous vacuum system was 2BE1252+air ejector, which is now transformed into a dry screw vacuum pump. The comparison table of test data is as follows:

vacuum system 2BE1252+ejector DVP 1600 screw pump
Feeding time (h) 2 1.5
Liquid temperature at the beginning of crystallization (ºC) 31.5 16.6
Crystallization time (h) 6 4.5
Time from crystallization to liquid coming out (min) 30 15
Crystal quality average good
Power consumption (KW) 45 37
Water consumption (m3) 26.4 0.72

Economic benefit analysis:

  Cost saving(USD) Remark
Water consumption and treatment 130 Water cost: $0.65/m3, water treatment: 30/m3
Power 15 $0.15/Kwh
Labor, production efficiency 43 Reduced from 6 hour to 4.5 hour
Sum up 188  

Please contact us for a detailed report of economic benefit analysis for your applications! 

 

Configuration
Standard configuration:
Machine base, pump head, coupling, motor, driving screen, air inlet connector, check valve, vacuum gauge, manual filling valve exhaust port muffler.
Optional accessories:
Inlet filter, inlet condenser, solvent flushing device, nitrogen purging device, nitrogen sealing device, exhaust port condenser, solenoid filling valve, cooling water flow switch, temperature sensor, pressure transmitter.

Applications

Leak Detection    Metallurgy  Industrial furnace  Lithium Battery
Chemical, pharmaceutical  Wind tunnel test  Power Industry Vacuum coating
Microelectronics industry Drying Process  Packaging and Printing Solar Energy
Exhaust gas recovery       

Product Parameters

Technical data of Variable pitch Dry screw vacuum pump

                Spec.
Model
Nominal pumping speed(50Hz) Ultimate pressure Nominal motor rating (50Hz)   Nominal motor speed  (50Hz)  Noise level   Lp Maximum
cooling water required
Suction Connection size Discharge Connection size Weight (Without Motor)
 m³/h Pa kw rpm dB(A) L/min mm mm Kg
DVP-180 181 2 4 2900 82 8 50 40 280
DVP-360 354 2 7.5 2900 83 10 50 40 400
DVP-540 535 2 11 2900 83 10 50 40 500
DVP-650 645 1 15 2900 84 20 65 50 600
DVP-800 780 1 22 2900 86 30 100 80 800
DVP-1600 1450 1 37 2900 86 40 125 100 1200

Technical data of Constant pitch Dry screw vacuum pump

                Spec.
Model
Nominal pumping speed(50Hz) Ultimate pressure Nominal motor rating (50Hz)   Nominal motor speed  (50Hz)  Noise level   Lp Maximum
cooling water required
Suction Connection size Discharge Connection size Weight (Without Motor)
 m³/h Pa kw rpm dB(A) L/min mm mm Kg
DSP-140 143 5 4 2900 82 10 50 40 240
DSP-280 278 5 7.5 2900 83 20 50 40 350
DSP-540 521 5 15 2900 83 30 65 50 550
DSP-650 617 5 18.5 2900 84 45 65 50 630
DSP-720 763 5 22 2900 85 55 80 80 780
DSP-1000 912 5 30 2900 86 70 100 80 880

Note: The cooling water volume of the dry screw vacuum pump provided in the table is the amount under 20ºC room temperature water. When the dry screw vacuum pump uses cooling device, the cooling water will be increased, the difference of inlet and outlet water temperature is generally controlled below 7ºC is appropriate.

 

Dimension

 

 

FAQ

Q: What information should I offer for an inquiry?
A: You can inquire based on the model directly, but it is always recommended that you contact us so that we can help you to check if the pump is the most appropriate for your application.

Q: Can you make a customized vacuum pump?
A: Yes, we can do some special designs to meet customer applications. Such as customized sealing systems, speical surface treatment can be applied for roots vacuum pump and screw vacuum pump. Please contact us if you have special requirements. 

Q: I have problems with our vacuum pumps or vacuum systems, can you offer some help?
A: We have application and design engineers with more than 30 years of experience in vacuum applications in different industries and help a lot of customers resolve their problems, such as leakage issues, energy-saving solutions, more environment-friendly vacuum systems, etc. Please contact us and we’ll be very happy if we can offer any help to your vacuum system.

Q: Can you design and make customized vacuum systems?
A: Yes, we are good for this.

Q: What is your MOQ?
A: 1 piece or 1 set.

Q: How about your delivery time?
A: 5-10 working days for the standard vacuum pump if the quantity is below 20 pieces, 20-30 working days for the conventional vacuum system with less than 5 sets. For more quantity or special requirements, please contact us to check the lead time.

Q: What are your payment terms?
A: By T/T, 50% advance payment/deposit and 50% paid before shipment.

Q: How about the warranty?
A: We offer 1-year warranty (except for the wearing parts).

Q: How about the service?
A: We offer remote video technical support. We can send the service engineer to the site for some special requirements.

/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

After-sales Service: Online Video Instruction
Warranty: 1 Year
Nominal Pumping Speed(50Hz): 181 M3/H
Ultimate Pressure: 5 PA
Nominal Motor Rating(50Hz): 4 Kw
Nominal Motor Speed(50Hz): 2900 Rpm

screw vane pump

Are there energy-efficient options for screw vacuum pumps?

Yes, there are energy-efficient options available for screw vacuum pumps. Here’s a detailed explanation of energy-efficient features and technologies that can be found in screw vacuum pumps:

1. Variable Frequency Drives (VFD):

Screw vacuum pumps equipped with Variable Frequency Drives (VFD) offer energy efficiency by allowing precise control of the pump’s rotational speed. VFDs adjust the motor speed according to the required vacuum level, resulting in reduced energy consumption compared to fixed-speed pumps. By matching the pump’s speed to the process demands, VFDs help optimize energy usage and minimize unnecessary energy losses.

2. High-Efficiency Motors:

Energy-efficient screw vacuum pumps often incorporate high-efficiency motors. These motors are designed to minimize energy losses and improve overall efficiency. High-efficiency motors typically comply with international efficiency standards, such as the International Electrotechnical Commission (IEC) standards or the National Electrical Manufacturers Association (NEMA) standards, and are classified with high efficiency ratings, such as IE3 or NEMA Premium.

3. Advanced Control Systems:

Modern screw vacuum pumps may feature advanced control systems that optimize energy consumption. These systems utilize intelligent algorithms to monitor and adjust the pump’s operation based on real-time process conditions. By continuously assessing the demand for vacuum and adapting the pump’s performance accordingly, advanced control systems help reduce energy waste and improve overall energy efficiency.

4. Energy Recovery Systems:

Some screw vacuum pumps are equipped with energy recovery systems that capture and utilize energy that would otherwise be wasted. These systems can include heat exchangers or energy regeneration units that repurpose excess heat from the pump’s operation. By utilizing this recovered energy for other processes, such as preheating or heating applications, energy recovery systems contribute to increased overall system efficiency.

5. Optimized Pump Design:

Manufacturers continuously work on optimizing the design of screw vacuum pumps to improve energy efficiency. This can involve reducing internal friction, optimizing rotor profiles, and minimizing leakage paths. These design enhancements aim to maximize the pump’s performance while minimizing energy losses, resulting in improved overall energy efficiency.

6. Energy Monitoring and Analysis:

Energy-efficient screw vacuum pumps often come with built-in energy monitoring and analysis features. These systems allow operators to monitor the energy consumption of the pump in real-time and analyze energy usage patterns. By identifying energy-intensive periods or inefficiencies, operators can make informed decisions to optimize the pump’s operation and further improve energy efficiency.

7. Energy Efficiency Certifications:

Energy-efficient screw vacuum pumps may carry energy efficiency certifications or labels, such as the ENERGY STAR® certification or the European Union’s Energy Efficiency Directive compliance. These certifications provide reassurance that the pump has undergone testing and meets specific energy efficiency criteria, providing confidence in its energy-saving capabilities.

In summary, energy-efficient options for screw vacuum pumps exist and incorporate features such as Variable Frequency Drives (VFD), high-efficiency motors, advanced control systems, energy recovery systems, optimized pump design, energy monitoring and analysis capabilities, and energy efficiency certifications. By utilizing these energy-efficient options, industries can reduce energy consumption, lower operating costs, and minimize their environmental impact.

screw vane pump

What safety features should be considered when operating screw vacuum pumps?

When operating screw vacuum pumps, it is important to consider several safety features to ensure the protection of personnel, equipment, and the surrounding environment. Here’s a detailed explanation of the safety features that should be considered:

1. Overpressure Protection:

Screw vacuum pumps should be equipped with overpressure protection mechanisms to prevent the system from exceeding safe pressure limits. This can include pressure relief valves or rupture discs that automatically release excess pressure to avoid equipment damage or catastrophic failures. It is essential to set the pressure relief devices at appropriate levels and regularly inspect and maintain them to ensure their proper functioning.

2. Emergency Stop Button:

An emergency stop button should be easily accessible near the screw vacuum pump or within the control panel. This allows operators to quickly shut down the pump in case of emergencies, such as equipment malfunction, safety hazards, or personnel injury. The emergency stop button should be clearly labeled, well-maintained, and tested regularly to ensure its effectiveness.

3. Motor and Drive Protections:

The motor and drive system of the screw vacuum pump should be equipped with safety features to prevent overheating, overloading, and electrical faults. This can include thermal overload protection, motor temperature sensors, current monitoring devices, and short-circuit protection mechanisms. These safety features help safeguard the integrity of the motor and drive system, reducing the risk of fire, electrical hazards, and equipment damage.

4. Vacuum Level Monitoring:

Monitoring the vacuum level is crucial for safe operation. Screw vacuum pumps should be equipped with vacuum gauges or sensors to provide real-time information on the vacuum level. This allows operators to ensure that the system is operating within the desired range and helps detect any abnormal conditions or leaks. Alarms or visual indicators can also be implemented to alert operators when the vacuum level deviates from the set parameters.

5. Cooling and Ventilation:

Screw vacuum pumps generate heat during operation, and adequate cooling and ventilation systems should be in place to prevent overheating. This can include fans, heat exchangers, or cooling fins to dissipate heat effectively. Proper ventilation should be ensured to prevent the accumulation of flammable or hazardous gases. It is important to regularly inspect the cooling and ventilation systems and clean or replace components as needed to maintain optimal performance and safety.

6. Isolation and Lockout/Tagout:

Isolation valves should be installed in the suction and discharge lines of screw vacuum pumps to allow for safe maintenance, repair, or shutdown procedures. Lockout/Tagout (LOTO) procedures should be followed when performing maintenance or service activities. This involves locking and tagging the energy sources, such as electrical power or compressed air, to prevent accidental startup or release of stored energy. Adequate training and awareness of LOTO procedures are essential for personnel safety.

7. Safety Signage and Labels:

Clear and visible safety signage and labels should be placed near the screw vacuum pump and control panel to provide important safety information, warnings, and operating instructions. This includes labels for emergency stop buttons, voltage ratings, hazardous areas, and safety precautions. Safety signs should comply with relevant standards and regulations and be regularly inspected to ensure their visibility and legibility.

8. Operator Training and PPE:

Proper training should be provided to operators working with screw vacuum pumps to ensure they understand the safe operating procedures, potential hazards, and emergency protocols. Operators should also wear appropriate personal protective equipment (PPE) such as safety glasses, gloves, and hearing protection, as required by the specific operating conditions and industry regulations.

In summary, several safety features should be considered when operating screw vacuum pumps. These include overpressure protection, emergency stop buttons, motor and drive protections, vacuum level monitoring, cooling and ventilation systems, isolation and lockout/tagout procedures, safety signage, operator training, and the use of personal protective equipment. Implementing these safety features helps mitigate risks, protect personnel and equipment, and maintain a safe working environment during screw vacuum pump operation.

screw vane pump

What are the typical applications of screw vacuum pumps in various industries?

Screw vacuum pumps find a wide range of applications across various industries due to their efficiency, reliability, and versatility. Here are some typical applications of screw vacuum pumps in different industries:

Chemical Processing:

  • Vacuum distillation and drying processes
  • Vacuum filtration and solvent recovery
  • Crystallization and evaporation systems
  • Chemical reactors and vacuum drying ovens

Pharmaceuticals:

  • Vacuum drying and freeze-drying of pharmaceutical products
  • Deaeration and degassing processes
  • Vacuum packaging and sealing
  • Purification and distillation of pharmaceutical compounds

Food and Beverage:

  • Deaeration and removal of dissolved gases in food and beverage products
  • Evaporation and concentration processes
  • Freeze drying and vacuum packaging
  • Vacuum cooling and drying of food products

Power Generation:

  • Steam condenser and turbine exhaust applications
  • Deaeration and vacuum systems in power plants
  • Vacuum distillation in the production of power plant chemicals
  • Transformer drying and impregnation

Electronics Manufacturing:

  • Vacuum drying and degassing of electronic components
  • Vacuum soldering and brazing processes
  • Thin film deposition and vacuum coating
  • Printed circuit board manufacturing

Wastewater Treatment:

  • Vacuum filtration and sludge dewatering
  • Vacuum degassing and deaeration of wastewater
  • Evaporation and concentration of wastewater streams

Environmental Applications:

  • Landfill gas recovery and treatment
  • Vacuum drying and deodorization in waste management
  • Vacuum systems for air pollution control

Other Industries:

  • Oil and gas industry for vapor recovery and gas processing
  • Automotive industry for vacuum metallurgy and component manufacturing
  • Textile industry for vacuum drying and deaeration of fabrics
  • Research and development laboratories for various scientific applications

These are just a few examples of the many applications of screw vacuum pumps in various industries. The versatility and reliability of screw vacuum pumps make them suitable for a wide range of vacuum-related processes, enabling enhanced productivity, improved product quality, and cost savings in diverse industrial settings.

China Good quality 5PA 4kw 181m3/H No Leakage Variable Pitch Petrochemical Dry Screw Vacuum Pump   supplier China Good quality 5PA 4kw 181m3/H No Leakage Variable Pitch Petrochemical Dry Screw Vacuum Pump   supplier
editor by CX 2024-04-16

China Hot selling for Clean Vacuum of Oil-Free Dry Air Cooled Screw Vacuum Pump vacuum pump and compressor

Product Description

Product Description

Dry screw vacuum pump, is the use of a pair of screw, made in the pump shell synchronous high-speed reverse rotation of the effects of the suction and exhaust and suction device, 2 screw fine dynamic balancing correction, and is supported by bearings, is installed in the pump shell, between screw and screw has a certain gap, so the pump work, no friction between each other, smooth running, low noise, Working chamber without lubricating oil, therefore, dry screw pump can remove a lot of steam and a small amount of dust gas occasions, higher limit vacuum, lower power consumption, energy saving, maintenance-free and other advantages.Dry Oil-Free Air Cooling Screw Vacuum Pump ,This is an advanced and widely used vacuum pump at present, It is 1 of the best-selling products of our company.
 It adopts explosion-proof motor with high configuration, It has the characteristics of low noise, no oil and pollution, clean and high vacuum, simple and convenient use, operation and maintenance, Widely used in many industries, For example, oil and gas recovery, vacuum coating, biomedicine, food processing, single crystal furnace, vacuum forming, vacuum melting, electronic photovoltaic, semiconductor synthesis and many other industries are used.
The dry oil-free screw vacuum pump produced by our company is divided into air cooling and water cooling according to the extraction rate, and there are many models for you to choose.

Our Advantages

There is no medium in the working chamber, which can obtain a clean vacuum.
. No clearance between rotating parts, high speed operation, small overall volume.

There is no compression in the gas, suitable for extraction of coagulable gas.

Can remove a lot of steam and a small amount of dust gas occasions.
. High vacuum, the ultimate vacuum up to 1 Pa.

Screw material is high strength special material, material density, wear resistance, stable performance.

No friction rotating parts, low noise.
. Simple structure, convenient maintenance.
Wider range of use: corrosive environment can be used.

No oil consumption, no water.

Pump gas directly discharged from the pump body, no pollution of water, no environmental pressure, more convenient gas recovery.

It can be composed of oil-free unit with Roots pump and molecular pump.

 

Typical Use

——Oil and gas recovery.    ——Biological medicine ——Food Processing —— Single crystal furnace
——Vacuum forming ——Vacuum flame refining ——Electronic photovoltaic. ——Semiconductor synthesis

Product Parameters

Type
(Air cooled series)
                                                                            Basic parameters 
Pumping speed
(m3/h)
Presure limit(Pa)  Power (kW)  revolution (rpm) Inlet caliber
(mm)
outlet caliber (mm) Pump head weight
(kg)
noise dB(A) Overall dimension
(length*width*height)
(mm)
LG-10 10 ≤5 0.75 2730 KF16 KF16 30 ≤ 72 655x260x285
LG-20 20 ≤5 1.1 2840 KF25 KF25 55 ≤72 720x305x370
LG-50 50 ≤10 2.2 2850 KF40 KF40 90 ≤75 920x350x420
LG-70 70 ≤30 3 2850 KF40 KF40 110 ≤75 910x390x460
LG-90 90 ≤30 4 2870 KF50 KF50 125 ≤80 1000x410x495

Characteristic Curve

 

Detailed Photos

General Manager Speech

Deeply cultivate the vacuum technology, and research,develop and manufacture the vacuum equipment to provide the best solution in the vacuum field and make the vacuum application easier.

Company Profile

ZheJiang Kaien Vacuum Technology Co., Ltd. is a high-tech enterprise integrating R & D, production and operation of vacuum equipment. The company has strong technical force, excellent equipment and considerate after-sales service. The product manufacturing process is managed in strict accordance with IS09001 quality system. It mainly produces and sells screw vacuum pump, roots pump, claw vacuum pump, runoff vacuum pump, scroll pump, water ring vacuum pump, vacuum unit and other vacuum systems.

New plant plHangZhou

The company’s products have been for a number of food, medicine, refrigeration, drying plants and a number of transformer related equipment manufacturers for vacuum equipment. The products are widely used in vacuum drying and dehydration, kerosene vapor phase drying, vacuum impregnation, vacuum metallurgy, vacuum coating, vacuum evaporation, vacuum concentration, oil and gas recovery, etc.

High precision machining equipment

The company cooperates with many scientific research institutions and universities, such as ZheJiang University, China University of petroleum, ZheJiang Institute of mechanical design, etc.with colleges and universities to research and develop core technologies, and owns dozens of independent intellectual property patents.Our technology is leading, the product quality is stable, the product has a good reputation in China’s domestic market, is sold all over the country, and is exported to Europe, America, Africa, the Middle East and Southeast Asia,We adhering to the basic tenet of quality, reputation and service, the company takes leading-edge technology of vacuum pump as its own responsibility, and wholeheartedly serves customers of vacuum equipment application in various industries with rigorous working attitude and professional working style.

Product quality wins consumer cooperation

In shipment

ISO 9001

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After-sales Service: Lifetime Paid Service
Warranty: One Year
Oil or Not: Oil Free
Structure: Screw
Exhauster Method: Entrapment Vacuum Pump
Vacuum Degree: High Vacuum
Customization:
Available

|

screw vane pump

What are the cost considerations when purchasing and maintaining screw vacuum pumps?

When purchasing and maintaining screw vacuum pumps, several cost considerations come into play. Here’s a detailed explanation of the key factors to consider:

1. Initial Purchase Cost:

The initial purchase cost of a screw vacuum pump is an important consideration. The cost can vary depending on factors such as the pump’s capacity, specifications, features, and the manufacturer. Generally, screw vacuum pumps tend to have a higher upfront cost compared to some other types of vacuum pumps. However, it’s essential to evaluate the long-term benefits and performance advantages offered by screw vacuum pumps to determine their overall value for the specific application.

2. Energy Consumption:

Energy consumption is a significant ongoing cost associated with operating screw vacuum pumps. While screw vacuum pumps are known for their high efficiency, it’s important to consider the power requirements and energy consumption of the specific pump model. Opting for energy-efficient screw vacuum pumps can result in long-term cost savings by reducing electricity bills and minimizing the environmental impact. Additionally, pumps equipped with advanced control systems or variable speed drives allow for better energy optimization and can further enhance cost-effectiveness.

3. Maintenance and Service:

Maintenance and service costs are important considerations throughout the lifecycle of a screw vacuum pump. Regular maintenance is necessary to ensure optimal performance, reliability, and longevity of the equipment. The specific maintenance requirements and associated costs can vary depending on the pump model and manufacturer. It’s crucial to follow the manufacturer’s recommended maintenance schedule and guidelines. Some maintenance tasks may include changing seals, replacing filters, inspecting and lubricating bearings, and monitoring performance parameters. Proper maintenance can prevent costly breakdowns, extend the pump’s service life, and minimize unexpected repair expenses.

4. Spare Parts and Consumables:

When budgeting for screw vacuum pumps, it’s important to consider the cost of spare parts and consumables. Over time, certain components of the pump may require replacement, such as seals, gaskets, filters, or lubricants. The availability and cost of these spare parts can vary depending on the pump model and manufacturer. It’s advisable to inquire about the availability, pricing, and expected lifespan of consumables when purchasing the pump and factor these costs into the overall budget.

5. Operational Downtime:

Operational downtime can have significant cost implications for any industrial process. When a screw vacuum pump requires maintenance, repair, or replacement, it may result in downtime, leading to production interruptions, decreased efficiency, and potential revenue loss. Therefore, it’s important to consider the reliability, serviceability, and availability of technical support when choosing a screw vacuum pump. Opting for reputable manufacturers with a track record of providing reliable products and responsive customer support can help minimize operational downtime and mitigate associated costs.

6. Lifecycle Cost Analysis:

When evaluating the cost considerations of screw vacuum pumps, it’s beneficial to conduct a lifecycle cost analysis. This analysis takes into account not only the initial purchase cost but also the long-term operational costs, maintenance expenses, energy consumption, and expected service life of the pump. By considering the total cost of ownership over the pump’s lifespan, including factors like efficiency, reliability, and maintenance requirements, it becomes easier to assess the cost-effectiveness of different pump options and make informed purchasing decisions.

7. Warranty and After-Sales Support:

Considering the warranty and after-sales support offered by the pump manufacturer is essential. A comprehensive warranty can provide cost protection against potential defects or premature failures. Additionally, reliable after-sales support, technical assistance, and readily available spare parts can contribute to minimizing downtime, reducing repair costs, and ensuring the long-term performance of the screw vacuum pump.

In summary, the cost considerations when purchasing and maintaining screw vacuum pumps include the initial purchase cost, energy consumption, maintenance and service expenses, spare parts and consumables, operational downtime, lifecycle cost analysis, and warranty and after-sales support. By carefully evaluating these factors and assessing the specific needs of the application, businesses can make informed decisions to optimize cost-effectiveness and achieve reliable vacuum pump performance.

screw vane pump

Are there noise and vibration considerations when using screw vacuum pumps?

Yes, there are noise and vibration considerations when using screw vacuum pumps. Here’s a detailed explanation of the noise and vibration factors associated with screw vacuum pumps:

1. Noise Generation:

Screw vacuum pumps can generate noise during their operation. The noise level depends on various factors, including the pump’s design, speed, motor type, and the specific application. While screw vacuum pumps are generally quieter compared to some other types of vacuum pumps, noise levels can still vary. It’s important to consider the noise emissions of the pump, especially in environments where noise control and worker comfort are important factors.

2. Vibration:

Screw vacuum pumps can also produce vibrations during their operation. Vibrations may result from mechanical forces, imbalances, misalignment, or resonance within the pump or its associated components. Excessive vibration can lead to reduced pump performance, accelerated wear of parts, and potential damage to the pump or connected equipment. It’s essential to minimize and control vibrations to ensure smooth and reliable operation.

3. Impact on Performance:

Excessive noise and vibration can negatively impact the performance of screw vacuum pumps. High noise levels can indicate inefficiencies, mechanical issues, or the need for maintenance. Vibrations can cause misalignment, decreased sealing effectiveness, and increased wear on components, affecting the pump’s overall efficiency and vacuum generation capability. Monitoring and addressing noise and vibration concerns are crucial to maintaining optimal pump performance.

4. Noise Control Measures:

To mitigate noise generated by screw vacuum pumps, several noise control measures can be implemented. These include using sound enclosures or barriers around the pump to reduce noise propagation, installing vibration isolation mounts or pads to minimize vibration transmission to surrounding structures, and employing acoustic insulation materials to absorb and dampen noise. Additionally, selecting pumps with lower noise ratings or opting for models specifically designed for reduced noise emissions can help minimize noise concerns.

5. Vibration Control and Maintenance:

To address vibration issues, it is important to ensure proper installation and alignment of the screw vacuum pump. This includes using appropriate mounting techniques and ensuring proper anchoring to reduce vibrations. Regular maintenance, such as inspections, lubrication, and replacement of worn-out components, can help prevent excessive vibrations and maintain smooth pump operation. Additionally, balancing rotating parts and addressing any misalignment or resonance issues can help minimize vibrations and extend the pump’s service life.

6. Occupational Health and Safety:

Noise and vibration considerations are essential from an occupational health and safety perspective. Prolonged exposure to high noise levels can have detrimental effects on worker health, including hearing damage and increased stress levels. Vibrations can also contribute to operator discomfort and fatigue. It is important to comply with relevant workplace noise regulations, provide appropriate personal protective equipment, and implement measures to minimize noise and vibration exposure for personnel working with or around screw vacuum pumps.

In summary, noise and vibration considerations are important when using screw vacuum pumps. By implementing noise control measures, addressing vibration issues, ensuring proper maintenance, and prioritizing occupational health and safety, the noise and vibration levels associated with screw vacuum pumps can be effectively managed. This helps maintain pump performance, prolong equipment life, and provide a safe and comfortable working environment.

screw vane pump

What are the advantages of using a screw vacuum pump in industrial processes?

Using a screw vacuum pump in industrial processes offers several advantages, making it a preferred choice for various applications. Here are some key advantages:

  • High Efficiency: Screw vacuum pumps are known for their high efficiency in handling large volumes of gas or vapor. They operate based on positive displacement, ensuring consistent performance regardless of pressure differentials. This high volumetric efficiency allows for faster evacuation and quicker process cycles, increasing overall productivity.
  • Wide Operating Range: Screw vacuum pumps are capable of maintaining stable vacuum levels across a wide range of pressures. They can achieve both low and high vacuum levels, making them versatile for different industrial processes. This wide operating range enables their use in applications that require precise control of vacuum levels.
  • Continuous Operation: Screw vacuum pumps are designed for continuous operation without the need for frequent shutdowns or maintenance. They can handle demanding industrial processes that require sustained vacuum levels for extended periods. This continuous operation improves productivity and reduces downtime.
  • Reliability and Durability: Screw vacuum pumps are known for their reliability and robust construction. They are designed to withstand harsh operating conditions, including high temperatures, corrosive environments, and heavy-duty applications. Their durable design and materials ensure long service life and minimal maintenance requirements.
  • Low Noise Levels: Screw vacuum pumps generally produce lower noise levels compared to other types of vacuum pumps. This feature is particularly beneficial in industrial settings where noise reduction is important for the comfort and safety of workers.
  • Ability to Handle Wet and Dirty Gases: Screw vacuum pumps can handle wet and dirty gases effectively without compromising performance. They are designed to handle condensable vapors, particulates, and liquid carryover, which makes them suitable for applications where the gas or vapor may contain contaminants.
  • Reduced Environmental Impact: Screw vacuum pumps often incorporate energy-efficient designs, resulting in reduced power consumption and lower operating costs. Additionally, some models may include features such as oil-free operation, which eliminates the need for lubricating oil and reduces the environmental impact.
  • Application Versatility: Screw vacuum pumps find applications in a wide range of industries, including chemical processing, pharmaceuticals, food and beverage, power generation, electronics manufacturing, and more. They are capable of handling various gases and vapors, making them adaptable to different industrial processes.

Overall, the advantages of using a screw vacuum pump in industrial processes include high efficiency, wide operating range, continuous operation, reliability, low noise levels, ability to handle wet and dirty gases, reduced environmental impact, and application versatility. These factors contribute to improved productivity, cost savings, and enhanced process control, making screw vacuum pumps a popular choice in many industrial settings.

China Hot selling for Clean Vacuum of Oil-Free Dry Air Cooled Screw Vacuum Pump   vacuum pump and compressor	China Hot selling for Clean Vacuum of Oil-Free Dry Air Cooled Screw Vacuum Pump   vacuum pump and compressor
editor by CX 2024-04-15

China Standard OEM ODM High Efficient Screw Pumping Unit Chemical Dry Screw Roots Vacuum Pump vacuum pump connector

Product Description

OEM ODM High Efficient Screw Pumping Unit Chemical Dry Screw Roots Vacuum Pump

Product Description

The LGB screw vacuum pump is an extraction equipment that uses a pair of screws to perform synchronous high-speed reverse rotation in the pump casing, generating suction and exhaust effects. Due to the certain gap between the screws, the pump operates smoothly without friction, with low noise, and no need for lubricating oil in the working chamber. Therefore, the dry screw pump can extract gas containing water vapor and a small amount of dust; Due to the maximum pressure of the LGB screw vacuum pump CHINAMFG 5PA, it can be widely used in various fields such as chemical industry, metallurgy, electronics, petroleum, aerospace, tools, papermaking, packaging, food, medicine, medical equipment, as well as information engineering, biotechnology, microelectronics, etc

Product Parameters

 

Model

LGB-70

LGB-100

LGB-200

LGB-300

Pumping speed(L/3)

70

100

200

300

Ultimate pressure(Pa)

5

5

5

5

rotational speed(rpm)

2900

2940

2940

2950

Connections of inlet  DN(mm)

50

80

100

125

Connections of outle  DN(mm)

45

65

65

80

Noise level dB(A)

≤80

≤80

≤80

≤80

temperature rise(°C)

≤40°C

≤40°C

≤40°C

≤40°C

Pumping size(mm)

1360X960X700

1650X847X933

1740X960X980

2100X1100X1030

Weight (with oil filling) kg

500

665

1571

1300

Motor Power(Kw)

7.5

15

18.5

37

Motor Voltage/motor base frequency(V/Hz)

380/50

380/50

380/50

380/50

Nominal Motor speed (rpm)

2900

2940

2940

2950

Nominal Motor current(A)

14.8

28.8

35.5

67.9

Type of protection(IP)

IP55

IP55

IP55

IP55

Detailed Photos

Choose the right materials and weld carefully

Surface texture, smooth lines, good quality visible

Performance stability and outstanding advantages

We can recommend the closest model according to your requirements

Long term use and high efficiency

Compact structure, low noise, and reliable use

Easy to disassemble and maintain

Can be selected according to process requirements

Materials and sealing methods for the overcurrent section of the pump

 

Company Profile

HangZhou Sifang Vacuum Equipment Co., Ltd. specializes in the production of vacuum furnaces, vacuum pumps, steel drums and other products.”Sifang” is the registered trademark of the company’s products.

our company is 1 professional vacuum equipment manufacturer in HangZhou, China. We specialize in vacuum pumps, furnaces, systems and components for diverse applications. We produce rotary vane vacuum pumps, water ring vacuum pumps, reciprocating vacuum pumps, roots vacuum pump units, vacuum heat treatment furnaces, vacuum aluminum brazing furnaces, high temperature brazing fur- naces, vacuum sintering furnaces, monocrystalline silicon furnaces and other products. All these vacuum equipment are widely used in aviation, aerospace, military, railway, automobile, machinery, mold, electronics, metallurgy, scientific research and other fields.

We have professional engineer support, high efficiency sales team and competitive price superiority, and attract customers from all over the world, we export to over 40 countries, including Europe, Poland, Serbia, Turkey, Russia, USA, Mexico, Brazil, India, Thailand, Middle east and South Africa.

After several years’ development, We have achieved great progress, we are equipped with the AutomaticCNCmachines and multi-func- tion testing machines. Our R&D department provide the strong tech- nical support and enable us to receive some 0 E M, O D M projects. We can produce at least 3000 sets vacuum equipment per year. With our innovative and energy-efficient vacuum equipment that is put to work in a multitude of manufacturing and process applica- tions, we also offer you a comprehensive suite of CHINAMFG ser- vices to complement our products.

FAQ

1.Q: Are you a factory or trading company?
A: We are a factory and we have professional team of workers,Designers and inspectors.

2.Q:Do you accept custom?
A:Of course.We have professional teams who make your designs,photos,imagines and OEM orders into real production.

3.Q:What’s your advantages?
A: Quick response to your enquiry,
High quality control,
Reasonable price,
Timely delivery,
Excellent after-sales service,
OEM/ODM are welcome

4.Q:What’s your shipping terms?
A:If you need to ship by air,we can use DHL,UPS,FedEx,TNT or EMS.If you need to ship by sea,we have many good forwarders to work with,they can provide the best price for you.

  /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

After-sales Service: Online Support
Warranty: 1 Year
Oil or Not: Oil
Structure: Vacuum Pump
Exhauster Method: Entrapment Vacuum Pump
Vacuum Degree: Vacuum
Customization:
Available

|

screw vane pump

How do screw vacuum pumps compare to other types of vacuum pumps in terms of performance?

Screw vacuum pumps offer several advantages and unique characteristics compared to other types of vacuum pumps. Here’s a detailed explanation of how screw vacuum pumps compare to other vacuum pump types in terms of performance:

1. Efficiency and Energy Consumption:

Screw vacuum pumps are known for their high efficiency and energy-saving capabilities. Compared to other types of vacuum pumps, such as rotary vane pumps or liquid ring pumps, screw vacuum pumps typically have a higher efficiency rating. They achieve this through design features like internal compression, which minimizes energy losses and reduces power consumption. The efficient operation of screw vacuum pumps can result in lower operating costs and reduced environmental impact.

2. Vacuum Level and Flow Rate:

Screw vacuum pumps are capable of achieving both high vacuum levels and high flow rates. They are particularly well-suited for applications requiring a wide operating range, from low to medium vacuum levels. While other types of pumps, like rotary vane pumps, may excel in certain vacuum ranges, screw vacuum pumps offer a versatile performance that suits a variety of industrial applications.

3. Handling of Wet and Contaminated Gases:

Screw vacuum pumps exhibit good tolerance for wet and contaminated gases. They can handle gases containing moisture, condensable vapors, particulates, or even liquid droplets without significant performance degradation. This capability makes screw vacuum pumps suitable for applications where the pumped gases may contain impurities or where condensation is likely to occur. In comparison, some other types of pumps may be more sensitive to moisture or require additional equipment, such as gas traps or separators, to handle wet or contaminated gases effectively.

4. Reliability and Maintenance:

Screw vacuum pumps are generally known for their reliability and low maintenance requirements. They have a robust design with fewer moving parts compared to certain types of pumps, such as rotary vane pumps or liquid ring pumps. This simpler design contributes to reduced wear and tear, resulting in longer service intervals and lower maintenance costs. Additionally, screw vacuum pumps often have longer service life due to their durable construction and efficient operation.

5. Noise and Vibration:

Screw vacuum pumps tend to produce lower noise levels and vibration compared to some other types of pumps. The design of screw vacuum pumps, with balanced rotors and reduced internal clearances, helps minimize noise and vibration during operation. This characteristic can be advantageous in applications where noise reduction and a quieter working environment are desired.

6. Size and Compactness:

Screw vacuum pumps are generally compact in size, making them suitable for installations where space is limited. Their compact design allows for easier integration into existing systems or equipment layouts. In comparison, some other types of pumps, such as liquid ring pumps or some types of dry pumps, may have larger footprints or require additional ancillary equipment, which can pose challenges in space-constrained environments.

7. Specific Application Considerations:

It’s important to note that the choice of vacuum pump type should consider the specific requirements of the application. While screw vacuum pumps offer numerous advantages, certain applications may benefit from the characteristics of other vacuum pump types. For example, oil-sealed rotary vane pumps may be preferred in applications requiring very high vacuum levels, while dry scroll pumps may be suitable for oil-free or cleanroom environments.

In summary, screw vacuum pumps offer high efficiency, versatility in vacuum level and flow rate, good tolerance for wet and contaminated gases, reliability with low maintenance requirements, reduced noise and vibration levels, compactness, and space-saving advantages. However, it is crucial to evaluate the specific needs of the application and consult with experts to determine the most suitable vacuum pump type for optimal performance and efficiency.

screw vane pump

What safety features should be considered when operating screw vacuum pumps?

When operating screw vacuum pumps, it is important to consider several safety features to ensure the protection of personnel, equipment, and the surrounding environment. Here’s a detailed explanation of the safety features that should be considered:

1. Overpressure Protection:

Screw vacuum pumps should be equipped with overpressure protection mechanisms to prevent the system from exceeding safe pressure limits. This can include pressure relief valves or rupture discs that automatically release excess pressure to avoid equipment damage or catastrophic failures. It is essential to set the pressure relief devices at appropriate levels and regularly inspect and maintain them to ensure their proper functioning.

2. Emergency Stop Button:

An emergency stop button should be easily accessible near the screw vacuum pump or within the control panel. This allows operators to quickly shut down the pump in case of emergencies, such as equipment malfunction, safety hazards, or personnel injury. The emergency stop button should be clearly labeled, well-maintained, and tested regularly to ensure its effectiveness.

3. Motor and Drive Protections:

The motor and drive system of the screw vacuum pump should be equipped with safety features to prevent overheating, overloading, and electrical faults. This can include thermal overload protection, motor temperature sensors, current monitoring devices, and short-circuit protection mechanisms. These safety features help safeguard the integrity of the motor and drive system, reducing the risk of fire, electrical hazards, and equipment damage.

4. Vacuum Level Monitoring:

Monitoring the vacuum level is crucial for safe operation. Screw vacuum pumps should be equipped with vacuum gauges or sensors to provide real-time information on the vacuum level. This allows operators to ensure that the system is operating within the desired range and helps detect any abnormal conditions or leaks. Alarms or visual indicators can also be implemented to alert operators when the vacuum level deviates from the set parameters.

5. Cooling and Ventilation:

Screw vacuum pumps generate heat during operation, and adequate cooling and ventilation systems should be in place to prevent overheating. This can include fans, heat exchangers, or cooling fins to dissipate heat effectively. Proper ventilation should be ensured to prevent the accumulation of flammable or hazardous gases. It is important to regularly inspect the cooling and ventilation systems and clean or replace components as needed to maintain optimal performance and safety.

6. Isolation and Lockout/Tagout:

Isolation valves should be installed in the suction and discharge lines of screw vacuum pumps to allow for safe maintenance, repair, or shutdown procedures. Lockout/Tagout (LOTO) procedures should be followed when performing maintenance or service activities. This involves locking and tagging the energy sources, such as electrical power or compressed air, to prevent accidental startup or release of stored energy. Adequate training and awareness of LOTO procedures are essential for personnel safety.

7. Safety Signage and Labels:

Clear and visible safety signage and labels should be placed near the screw vacuum pump and control panel to provide important safety information, warnings, and operating instructions. This includes labels for emergency stop buttons, voltage ratings, hazardous areas, and safety precautions. Safety signs should comply with relevant standards and regulations and be regularly inspected to ensure their visibility and legibility.

8. Operator Training and PPE:

Proper training should be provided to operators working with screw vacuum pumps to ensure they understand the safe operating procedures, potential hazards, and emergency protocols. Operators should also wear appropriate personal protective equipment (PPE) such as safety glasses, gloves, and hearing protection, as required by the specific operating conditions and industry regulations.

In summary, several safety features should be considered when operating screw vacuum pumps. These include overpressure protection, emergency stop buttons, motor and drive protections, vacuum level monitoring, cooling and ventilation systems, isolation and lockout/tagout procedures, safety signage, operator training, and the use of personal protective equipment. Implementing these safety features helps mitigate risks, protect personnel and equipment, and maintain a safe working environment during screw vacuum pump operation.

screw vane pump

What are the typical applications of screw vacuum pumps in various industries?

Screw vacuum pumps find a wide range of applications across various industries due to their efficiency, reliability, and versatility. Here are some typical applications of screw vacuum pumps in different industries:

Chemical Processing:

  • Vacuum distillation and drying processes
  • Vacuum filtration and solvent recovery
  • Crystallization and evaporation systems
  • Chemical reactors and vacuum drying ovens

Pharmaceuticals:

  • Vacuum drying and freeze-drying of pharmaceutical products
  • Deaeration and degassing processes
  • Vacuum packaging and sealing
  • Purification and distillation of pharmaceutical compounds

Food and Beverage:

  • Deaeration and removal of dissolved gases in food and beverage products
  • Evaporation and concentration processes
  • Freeze drying and vacuum packaging
  • Vacuum cooling and drying of food products

Power Generation:

  • Steam condenser and turbine exhaust applications
  • Deaeration and vacuum systems in power plants
  • Vacuum distillation in the production of power plant chemicals
  • Transformer drying and impregnation

Electronics Manufacturing:

  • Vacuum drying and degassing of electronic components
  • Vacuum soldering and brazing processes
  • Thin film deposition and vacuum coating
  • Printed circuit board manufacturing

Wastewater Treatment:

  • Vacuum filtration and sludge dewatering
  • Vacuum degassing and deaeration of wastewater
  • Evaporation and concentration of wastewater streams

Environmental Applications:

  • Landfill gas recovery and treatment
  • Vacuum drying and deodorization in waste management
  • Vacuum systems for air pollution control

Other Industries:

  • Oil and gas industry for vapor recovery and gas processing
  • Automotive industry for vacuum metallurgy and component manufacturing
  • Textile industry for vacuum drying and deaeration of fabrics
  • Research and development laboratories for various scientific applications

These are just a few examples of the many applications of screw vacuum pumps in various industries. The versatility and reliability of screw vacuum pumps make them suitable for a wide range of vacuum-related processes, enabling enhanced productivity, improved product quality, and cost savings in diverse industrial settings.

China Standard OEM ODM High Efficient Screw Pumping Unit Chemical Dry Screw Roots Vacuum Pump   vacuum pump connector	China Standard OEM ODM High Efficient Screw Pumping Unit Chemical Dry Screw Roots Vacuum Pump   vacuum pump connector
editor by CX 2024-04-15

China OEM Similar Laybold Brand Dry Equal Pitch Rotary Screw Vacuum Pump with Best Sales

Product Description

DS Series Dry Screw Vacuum Pump 

Features

1.Exhaust Path Is Short, Reduce The Deposition Of Reactants.
Comparing with other types of dry vacuum pump,DENAIR screw vacuum pump has the shortest gas path in the vacuum pump and that could reduce the contamination of process gas. Screw rotors can play as a powder transmission mechanism,we runs well even there has lots of contamination inside the pump.

2.The Optimal Linear Sealing, The Pump Performance.
Patented rotor profile can provide rotor excellent sealing effects thus a larger clearance is allowable in between.Pump rotor wesring and rotor jam by the process contamination can be reduced by larger allowable clearcance.

3.Simple Structure, Low Fault Rate And Easy Maintenance
Screw type vacuum is composed by a pair of screw rotor and isolation plates are required in different between rotors and isolation plates can also be avoided.Overhaul CHINAMFG dry pump is much easier than other type of dry pump,so the erpair time is shorter and the cost is saver.

4.Microcomputer Operation, Remote Monitoring, Considerate Protection
Microprocessor controller provides lots of pump parameters for running status monitoring.Pump can be easily operated and monitored by the operation panel.Remote control software can help the customer monitor the pump running status remotely.

DS Vacuum Pump Speed Curve

Advantages

1.Special cooling liquid cooling, to avoid the cooling water may cause corrosion to the hull. 

2.Mobile operation interface, convenient operation; Display and the actual work of vacuum pump and can be selected to both languages, according to the real close to the customer.

3.Catch the power connector, safe and convenient.

4.The nitrogen gas heater, make the vacuum pump is more suitable for CVD, PECVD and other semiconductor technique process.
5.The control signals and communication signal interface, remote monitoring was carried out on the vacuum. 

Application

1.The health care industry.

2.Lighting industry.

3.A variety of analytical instruments.

4.Electronics, semiconductor industry. 

5.The power industry.

6.Refrigeration industry.

Technical Prameters

Type Unit DS180 DS250 DS360 DS540 DS720
50Hz 60Hz 50Hz 60Hz 50Hz 60Hz 50Hz 60Hz 50Hz 60Hz
Pumping speed m3/hr 180 216 250 3, China
And our factory is located in No.386,YangzhuangBang Street,Pingxing Rd.,Xindai Town,HangZhou,ZHangZhoug Province, China

Q3: Warranty terms of your machine? 
A3: Two years warranty for the machine and technical support according to your needs.

Q4: Will you provide some spare parts of the machines? 
A4: Yes, of course.

Q5: How long will you take to arrange production? 
A5: 380V 50HZ we can delivery the goods within 10 days. Other electricity or other color we will delivery within 22 days

Q6: Can you accept OEM orders? 
A6: Yes, with professional design team, OEM orders are highly welcome.
 

/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Oil or Not: Oil
Structure: Rotary Vacuum Pump
Exhauster Method: /
Vacuum Degree: Vacuum
Work Function: Pre-Suction Pump
Working Conditions: Dry
Customization:
Available

|

vacuum pump

Can Vacuum Pumps Be Used in the Aerospace Sector?

Vacuum pumps indeed have various applications in the aerospace sector. Here’s a detailed explanation:

Vacuum pumps play a crucial role in several areas of the aerospace industry, supporting various processes and systems. Some of the key applications of vacuum pumps in the aerospace sector include:

1. Space Simulation Chambers: Vacuum pumps are used in space simulation chambers to replicate the low-pressure conditions experienced in outer space. These chambers are utilized for testing and validating the performance and functionality of aerospace components and systems under simulated space conditions. Vacuum pumps create and maintain the necessary vacuum environment within these chambers, allowing engineers and scientists to evaluate the behavior and response of aerospace equipment in space-like conditions.

2. Propellant Management: In space propulsion systems, vacuum pumps are employed for propellant management. They help in the transfer, circulation, and pressurization of propellants, such as liquid rocket fuels or cryogenic fluids, in both launch vehicles and spacecraft. Vacuum pumps assist in creating the required pressure differentials for propellant flow and control, ensuring efficient and reliable operation of propulsion systems.

3. Environmental Control Systems: Vacuum pumps are utilized in the environmental control systems of aircraft and spacecraft. These systems are responsible for maintaining the desired atmospheric conditions, including temperature, humidity, and cabin pressure, to ensure the comfort, safety, and well-being of crew members and passengers. Vacuum pumps are used to regulate and control the cabin pressure, facilitating the circulation of fresh air and maintaining the desired air quality within the aircraft or spacecraft.

4. Satellite Technology: Vacuum pumps find numerous applications in satellite technology. They are used in the fabrication and testing of satellite components, such as sensors, detectors, and electronic devices. Vacuum pumps help create the necessary vacuum conditions for thin film deposition, surface treatment, and testing processes, ensuring the performance and reliability of satellite equipment. Additionally, vacuum pumps are employed in satellite propulsion systems to manage propellants and provide thrust for orbital maneuvers.

5. Avionics and Instrumentation: Vacuum pumps are involved in the production and testing of avionics and instrumentation systems used in aerospace applications. They facilitate processes such as thin film deposition, vacuum encapsulation, and vacuum drying, ensuring the integrity and functionality of electronic components and circuitry. Vacuum pumps are also utilized in vacuum leak testing, where they help create a vacuum environment to detect and locate any leaks in aerospace systems and components.

6. High Altitude Testing: Vacuum pumps are used in high altitude testing facilities to simulate the low-pressure conditions encountered at high altitudes. These testing facilities are employed for evaluating the performance and functionality of aerospace equipment, such as engines, materials, and structures, under simulated high altitude conditions. Vacuum pumps create and control the required low-pressure environment, allowing engineers and researchers to assess the behavior and response of aerospace systems in high altitude scenarios.

7. Rocket Engine Testing: Vacuum pumps are crucial in rocket engine testing facilities. They are utilized to evacuate and maintain the vacuum conditions in engine test chambers or nozzles during rocket engine testing. By creating a vacuum environment, these pumps simulate the conditions experienced by rocket engines in the vacuum of space, enabling accurate testing and evaluation of engine performance, thrust levels, and efficiency.

It’s important to note that aerospace applications often require specialized vacuum pumps capable of meeting stringent requirements, such as high reliability, low outgassing, compatibility with propellants or cryogenic fluids, and resistance to extreme temperatures and pressures.

In summary, vacuum pumps are extensively used in the aerospace sector for a wide range of applications, including space simulation chambers, propellant management, environmental control systems, satellite technology, avionics and instrumentation, high altitude testing, and rocket engine testing. They contribute to the development, testing, and operation of aerospace equipment, ensuring optimal performance, reliability, and safety.

vacuum pump

How Do Vacuum Pumps Impact the Quality of 3D Printing?

Vacuum pumps play a significant role in improving the quality and performance of 3D printing processes. Here’s a detailed explanation:

3D printing, also known as additive manufacturing, is a process of creating three-dimensional objects by depositing successive layers of material. Vacuum pumps are utilized in various aspects of 3D printing to enhance the overall quality, accuracy, and reliability of printed parts. Here are some key ways in which vacuum pumps impact 3D printing:

1. Material Handling and Filtration: Vacuum pumps are used in 3D printing systems to handle and control the flow of materials. They create the necessary suction force to transport powdered materials, such as polymers or metal powders, from storage containers to the printing chamber. Vacuum systems also assist in filtering and removing unwanted particles or impurities from the material, ensuring the purity and consistency of the feedstock. This helps to prevent clogging or contamination issues during the printing process.

2. Build Plate Adhesion: Proper adhesion of the printed object to the build plate is crucial for achieving dimensional accuracy and preventing warping or detachment during the printing process. Vacuum pumps are employed to create a vacuum environment or suction force that securely holds the build plate and ensures firm adhesion between the first layer of the printed object and the build surface. This promotes stability and minimizes the risk of layer shifting or deformation during the printing process.

3. Material Drying: Many 3D printing materials, such as filament or powdered polymers, can absorb moisture from the surrounding environment. Moisture-contaminated materials can lead to poor print quality, reduced mechanical properties, or defects in the printed parts. Vacuum pumps with integrated drying capabilities can be employed to create a low-pressure environment, effectively removing moisture from the materials before they are used in the printing process. This ensures the dryness and quality of the materials, resulting in improved print outcomes.

4. Resin Handling in Stereolithography (SLA): In SLA 3D printing, a liquid resin is selectively cured using light sources to create the desired object. Vacuum pumps are utilized to facilitate the resin handling process. They can be employed to degas or remove air bubbles from the liquid resin, ensuring a smooth and bubble-free flow during material dispensing. This helps to prevent defects and imperfections caused by trapped air or bubbles in the final printed part.

5. Enclosure Pressure Control: Some 3D printing processes, such as selective laser sintering (SLS) or binder jetting, require the printing chamber to be maintained at a specific pressure or controlled atmosphere. Vacuum pumps are used to create a controlled low-pressure or vacuum environment within the printing chamber, enabling precise pressure regulation and maintaining the desired conditions for optimal printing results. This control over the printing environment helps to prevent oxidation, improve material flow, and enhance the quality and consistency of printed parts.

6. Post-Processing and Cleaning: Vacuum pumps can also aid in post-processing steps and cleaning of 3D printed parts. For instance, in processes like support material removal or surface finishing, vacuum systems can assist in the removal of residual support structures or excess powder from printed objects. They can also be employed in vacuum-based cleaning methods, such as vapor smoothing, to achieve smoother surface finishes and enhance the aesthetics of the printed parts.

7. System Maintenance and Filtration: Vacuum pumps used in 3D printing systems require regular maintenance and proper filtration to ensure their efficient and reliable operation. Effective filtration systems within the vacuum pumps help to remove any contaminants or particles generated during printing, preventing their circulation and potential deposition on the printed parts. This helps to maintain the cleanliness of the printing environment and minimize the risk of defects or impurities in the final printed objects.

In summary, vacuum pumps have a significant impact on the quality of 3D printing. They contribute to material handling and filtration, build plate adhesion, material drying, resin handling in SLA, enclosure pressure control, post-processing and cleaning, as well as system maintenance and filtration. By utilizing vacuum pumps in these critical areas, 3D printing processes can achieve improved accuracy, dimensional stability, material quality, and overall print quality.

vacuum pump

What Is the Purpose of a Vacuum Pump in an HVAC System?

In an HVAC (Heating, Ventilation, and Air Conditioning) system, a vacuum pump serves a crucial purpose. Here’s a detailed explanation:

The purpose of a vacuum pump in an HVAC system is to remove air and moisture from the refrigerant lines and the system itself. HVAC systems, particularly those that rely on refrigeration, operate under specific pressure and temperature conditions to facilitate the transfer of heat. To ensure optimal performance and efficiency, it is essential to evacuate any non-condensable gases, air, and moisture from the system.

Here are the key reasons why a vacuum pump is used in an HVAC system:

1. Removing Moisture: Moisture can be present within an HVAC system due to various factors, such as system installation, leaks, or improper maintenance. When moisture combines with the refrigerant, it can cause issues like ice formation, reduced system efficiency, and potential damage to system components. A vacuum pump helps remove moisture by creating a low-pressure environment, which causes the moisture to boil and turn into vapor, effectively evacuating it from the system.

2. Eliminating Air and Non-Condensable Gases: Air and non-condensable gases, such as nitrogen or oxygen, can enter an HVAC system during installation, repair, or through leaks. These gases can hinder the refrigeration process, affect heat transfer, and decrease system performance. By using a vacuum pump, technicians can evacuate the air and non-condensable gases, ensuring that the system operates with the designed refrigerant and pressure levels.

3. Preparing for Refrigerant Charging: Prior to charging the HVAC system with refrigerant, it is crucial to create a vacuum to remove any contaminants and ensure the system is clean and ready for optimal refrigerant circulation. By evacuating the system with a vacuum pump, technicians ensure that the refrigerant enters a clean and controlled environment, reducing the risk of system malfunctions and improving overall efficiency.

4. Leak Detection: Vacuum pumps are also used in HVAC systems for leak detection purposes. After evacuating the system, technicians can monitor the pressure to check if it holds steady. A significant drop in pressure indicates the presence of leaks, enabling technicians to identify and repair them before charging the system with refrigerant.

In summary, a vacuum pump plays a vital role in an HVAC system by removing moisture, eliminating air and non-condensable gases, preparing the system for refrigerant charging, and aiding in leak detection. These functions help ensure optimal system performance, energy efficiency, and longevity, while also reducing the risk of system malfunctions and damage.

China OEM Similar Laybold Brand Dry Equal Pitch Rotary Screw Vacuum Pump   with Best Sales China OEM Similar Laybold Brand Dry Equal Pitch Rotary Screw Vacuum Pump   with Best Sales
editor by CX 2024-04-13

China Hot selling Problem Gasses Flammable Dry Screw Vacuum Pumps vacuum pump brakes

Product Description

>DS450 Dry Screw Vacuum Pumps

  • Complete series with pumping capacity of 120 to 4000 m3/h
  • Optimal ultimate pressure and broadest range of applications
  • Completely dry and oil-free
  • High pumping speed at atmospheric pressure reduces the pump-down time
  • Water cooling with temperature monitoring
  • Saving energy costs through internal compression
  • Wear-free dynamic seal
  • Direct gas flow and optimized temperature profile minimize deposits
  • Low energy consumption, low noise level
  • Extensive range of accessories
Technique data Unit DS0450
Rated flow rate m3/h 450
m3/min 7.5
L/S 125
Ultimate pressure Torr 6×10-3
mbar 0.8×10-2
Pa 0.8
Motor power kw 11
Motor speed rpm 2900/3500
Noise dB(A) 75
Inlet port mm 80
Outlet port mm 65
Volume of cooling water L 10~15
Temperature ºC 0-50
Operating humidity RH 90%

Applications

Distillation (normal, short path & molecular)
Drying (filter, freeze, and transformer drying)
Evaporation
Filtration
House vacuum (central or general/laboratory vacuum service, pilot plants)
Reactor service
Solvent recovery (fuel vapor)
Sterilization (ethylene oxide)
Problem gasses (flammable, low auto-ignition temperatures, corrosive gasses, and hydrogen)
Conveying

Additional Applications Include
Crystallization 
Deodorization 
Degassing 
Desorption 
Fluid handling 
Impregnation
Pervaporation 
Polymerization 
  /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Oil or Not: Oil Free
Structure: Dry Screw Vacuum Pump
Exhauster Method: Positive Displacement Pump
Vacuum Degree: Vacuum
Work Function: Dry Screw Pump
Working Conditions: Dry
Customization:
Available

|

screw vane pump

Can screw vacuum pumps be integrated into existing industrial systems?

Yes, screw vacuum pumps can be integrated into existing industrial systems. Here’s a detailed explanation of the integration process and considerations when incorporating screw vacuum pumps into existing setups:

1. System Compatibility:

Before integrating a screw vacuum pump into an existing industrial system, it is essential to assess the compatibility between the pump and the system. Consider factors such as the required vacuum level, flow rate, pressure range, and any specific process requirements. Ensure that the screw vacuum pump is capable of meeting the system’s demands and can effectively replace or complement the existing vacuum equipment.

2. Space and Installation:

Evaluate the available space within the existing industrial system to accommodate the screw vacuum pump. Consider the pump’s dimensions, including height, width, and depth, as well as any additional space required for maintenance and access. Plan for proper installation, such as providing a solid foundation or mounting structure, connecting necessary piping or ductwork, and ensuring proper ventilation and cooling as per the pump’s requirements.

3. Piping and Connection:

Review the existing piping and connection systems to determine if any modifications or additions are needed to integrate the screw vacuum pump. Ensure that the pump’s inlet and outlet connections align with the existing system’s specifications. It may be necessary to install or modify piping, valves, fittings, and other components to establish a seamless connection between the pump and the existing system.

4. Electrical and Control Integration:

Consider the electrical and control aspects of integrating the screw vacuum pump. Ensure that the power supply and electrical infrastructure in the existing system can support the pump’s electrical requirements, including voltage, frequency, and current. If necessary, consult with electrical experts to make any required electrical modifications or additions. Additionally, integrate the pump’s control system with the existing industrial control network or programmable logic controllers (PLCs) to enable seamless operation and monitoring.

5. System Optimization:

During the integration process, it is an opportunity to optimize the overall performance and energy efficiency of the system. Evaluate the system’s layout, airflow dynamics, and process requirements to determine if any adjustments or improvements can be made. Consider factors such as minimizing pressure drops, optimizing ductwork or piping configurations, and implementing energy-efficient control strategies. These optimizations can enhance the overall system performance and maximize the benefits of incorporating the screw vacuum pump.

6. Testing and Commissioning:

Once the integration is complete, conduct thorough testing and commissioning to ensure proper functionality and performance of the screw vacuum pump within the existing industrial system. Test the pump’s operation under various load conditions, monitor key performance parameters, and verify that the pump meets the desired vacuum levels and flow rates. Address any issues or discrepancies identified during the testing phase to ensure reliable and efficient operation.

7. Ongoing Maintenance and Support:

After integration, establish a maintenance plan for the screw vacuum pump as part of the overall system maintenance strategy. Follow the manufacturer’s recommended maintenance schedule, including regular inspections, lubrication, and cleaning. Additionally, ensure access to technical support and spare parts to address any maintenance or repair needs that may arise throughout the pump’s service life.

In summary, screw vacuum pumps can be integrated into existing industrial systems by assessing system compatibility, planning for installation and connection, addressing electrical and control integration, optimizing the system layout, conducting testing and commissioning, and establishing a maintenance plan. By carefully considering these factors and following best practices, the integration of screw vacuum pumps can enhance the performance, efficiency, and reliability of existing industrial systems.

screw vane pump

What safety features should be considered when operating screw vacuum pumps?

When operating screw vacuum pumps, it is important to consider several safety features to ensure the protection of personnel, equipment, and the surrounding environment. Here’s a detailed explanation of the safety features that should be considered:

1. Overpressure Protection:

Screw vacuum pumps should be equipped with overpressure protection mechanisms to prevent the system from exceeding safe pressure limits. This can include pressure relief valves or rupture discs that automatically release excess pressure to avoid equipment damage or catastrophic failures. It is essential to set the pressure relief devices at appropriate levels and regularly inspect and maintain them to ensure their proper functioning.

2. Emergency Stop Button:

An emergency stop button should be easily accessible near the screw vacuum pump or within the control panel. This allows operators to quickly shut down the pump in case of emergencies, such as equipment malfunction, safety hazards, or personnel injury. The emergency stop button should be clearly labeled, well-maintained, and tested regularly to ensure its effectiveness.

3. Motor and Drive Protections:

The motor and drive system of the screw vacuum pump should be equipped with safety features to prevent overheating, overloading, and electrical faults. This can include thermal overload protection, motor temperature sensors, current monitoring devices, and short-circuit protection mechanisms. These safety features help safeguard the integrity of the motor and drive system, reducing the risk of fire, electrical hazards, and equipment damage.

4. Vacuum Level Monitoring:

Monitoring the vacuum level is crucial for safe operation. Screw vacuum pumps should be equipped with vacuum gauges or sensors to provide real-time information on the vacuum level. This allows operators to ensure that the system is operating within the desired range and helps detect any abnormal conditions or leaks. Alarms or visual indicators can also be implemented to alert operators when the vacuum level deviates from the set parameters.

5. Cooling and Ventilation:

Screw vacuum pumps generate heat during operation, and adequate cooling and ventilation systems should be in place to prevent overheating. This can include fans, heat exchangers, or cooling fins to dissipate heat effectively. Proper ventilation should be ensured to prevent the accumulation of flammable or hazardous gases. It is important to regularly inspect the cooling and ventilation systems and clean or replace components as needed to maintain optimal performance and safety.

6. Isolation and Lockout/Tagout:

Isolation valves should be installed in the suction and discharge lines of screw vacuum pumps to allow for safe maintenance, repair, or shutdown procedures. Lockout/Tagout (LOTO) procedures should be followed when performing maintenance or service activities. This involves locking and tagging the energy sources, such as electrical power or compressed air, to prevent accidental startup or release of stored energy. Adequate training and awareness of LOTO procedures are essential for personnel safety.

7. Safety Signage and Labels:

Clear and visible safety signage and labels should be placed near the screw vacuum pump and control panel to provide important safety information, warnings, and operating instructions. This includes labels for emergency stop buttons, voltage ratings, hazardous areas, and safety precautions. Safety signs should comply with relevant standards and regulations and be regularly inspected to ensure their visibility and legibility.

8. Operator Training and PPE:

Proper training should be provided to operators working with screw vacuum pumps to ensure they understand the safe operating procedures, potential hazards, and emergency protocols. Operators should also wear appropriate personal protective equipment (PPE) such as safety glasses, gloves, and hearing protection, as required by the specific operating conditions and industry regulations.

In summary, several safety features should be considered when operating screw vacuum pumps. These include overpressure protection, emergency stop buttons, motor and drive protections, vacuum level monitoring, cooling and ventilation systems, isolation and lockout/tagout procedures, safety signage, operator training, and the use of personal protective equipment. Implementing these safety features helps mitigate risks, protect personnel and equipment, and maintain a safe working environment during screw vacuum pump operation.

screw vane pump

What are the different types of screw vacuum pumps available in the market?

There are several different types of screw vacuum pumps available in the market, each with its own design and operating characteristics. Here are some of the commonly used types of screw vacuum pumps:

1. Single-Stage Screw Vacuum Pumps:

Single-stage screw vacuum pumps consist of a single pair of intermeshing screws (rotors) that rotate to create vacuum. These pumps are commonly used for low to medium vacuum applications and can achieve a wide range of vacuum levels. Single-stage screw vacuum pumps are known for their compact design, high pumping speed, and efficient operation.

2. Multi-Stage Screw Vacuum Pumps:

Multi-stage screw vacuum pumps consist of multiple stages, each with its own pair of intermeshing screws. The gas or vapor is sequentially compressed and evacuated through multiple stages, allowing for higher vacuum levels to be achieved. Multi-stage screw vacuum pumps are suitable for applications requiring deeper vacuum levels, such as in chemical processing, power generation, and semiconductor manufacturing.

3. Dry Screw Vacuum Pumps:

Dry screw vacuum pumps operate without the use of any lubricating fluid in the pumping chamber. These pumps rely on tight clearances between the rotors and housing to create a seal and achieve vacuum. Dry screw vacuum pumps are preferred in applications where oil contamination or the presence of lubricating fluids is undesirable, such as in the electronics, pharmaceutical, and food processing industries.

4. Liquid Ring Screw Vacuum Pumps:

Liquid ring screw vacuum pumps combine the principles of liquid ring vacuum pumps and screw vacuum pumps. These pumps use a liquid ring as the sealing and compression medium, while the screws provide the positive displacement action. Liquid ring screw vacuum pumps are known for their capability to handle wet processes and carryover of liquid or condensable vapors. They are commonly used in applications where both liquid and gas handling is required, such as in chemical processing, wastewater treatment, and oil refining.

5. Variable Pitch Screw Vacuum Pumps:

Variable pitch screw vacuum pumps feature rotors with varying helical pitches along their length. This design allows for better optimization of the compression process and improved efficiency. Variable pitch screw vacuum pumps are often used in applications that require a wide operating range and high efficiency, such as in semiconductor manufacturing, research laboratories, and vacuum coating processes.

6. Oil-Injected Screw Vacuum Pumps:

Oil-injected screw vacuum pumps utilize injected oil as a sealing and lubricating medium. The oil creates a seal between the rotors and housing and provides lubrication to minimize friction. These pumps are commonly used in industrial applications where a higher level of vacuum is required, such as in power plants, chemical processes, and central vacuum systems.

7. Oil-Free Screw Vacuum Pumps:

Oil-free screw vacuum pumps are designed to operate without the use of any lubricating oil or fluid. These pumps employ alternative methods, such as dry running or the use of non-contacting technologies, to achieve the necessary sealing and lubrication. Oil-free screw vacuum pumps are favored in applications where oil contamination is a concern, such as in electronics manufacturing, pharmaceutical production, and food processing.

These are just a few examples of the different types of screw vacuum pumps available in the market. The choice of the most suitable type depends on specific application requirements, desired vacuum levels, process conditions, and industry standards.

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editor by CX 2024-04-11

China wholesaler CHINAMFG Variable Pitch Air Cooled Oil Electrical Dry Rotary Screw Vane Vacuum Pump for Vacuum Industry with high quality

Product Description

SCREW PUMP


Due to the special geometric shapes of the 2 components, separate sealed chambers are formed respectively. The medium flows uniformly in the axial direction, the internal flow rate is low, the volume remains unchanged, and the pressure is stable, so turbulence and agitation are not generated. The output pressure of each stage pump is 0.6MPa, and the head is 60m (clean water). Because the stator is made of a variety of elastic materials, this kind of pump has the characteristics that ordinary pumps can’t handle high-viscosity fluid transportation and the transportation of medium containing hard suspended particles or medium containing fiber. The flow rate is proportional to the speed.

The single screw pump has compact structure, small volume and easy maintenance. Strong adaptability to the medium, stable flow and small pressure pulsation. The working temperature is lower than 80ºC, if high temperature medium needs to be transported, it can be customized. It is widely used in food, metallurgy, papermaking, printing and dyeing, chemical, fertilizer, pharmaceutical and other industrial sectors.

Parameter:

Head 60-120m
Speed 0-960Rpm
Power 0.75-75kw
Voltage 380V
Inlet 25-250mm
Outlet 25-250mm
Temperaturer -20C to 150C
Flow 0.8-260m3/h
Others As details

Structure

Parameter

Parts picture

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After-sales Service: 1 Year
Warranty: 1 Year
Max.Head: >150m
Max.Capacity: >400 L/min
Driving Type: Centrifugal Pump
Material: Stainless Steel
Customization:
Available

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vacuum pump

Can Vacuum Pumps Be Used for Vacuum Packaging?

Yes, vacuum pumps can be used for vacuum packaging. Here’s a detailed explanation:

Vacuum packaging is a method used to remove air from a package or container, creating a vacuum environment. This process helps to extend the shelf life of perishable products, prevent spoilage, and maintain product freshness. Vacuum pumps play a crucial role in achieving the desired vacuum level for effective packaging.

When it comes to vacuum packaging, there are primarily two types of vacuum pumps commonly used:

1. Single-Stage Vacuum Pumps: Single-stage vacuum pumps are commonly used for vacuum packaging applications. These pumps use a single rotating vane or piston to create a vacuum. They can achieve moderate vacuum levels suitable for most packaging requirements. Single-stage pumps are relatively simple in design, compact, and cost-effective.

2. Rotary Vane Vacuum Pumps: Rotary vane vacuum pumps are another popular choice for vacuum packaging. These pumps utilize multiple vanes mounted on a rotor to create a vacuum. They offer higher vacuum levels compared to single-stage pumps, making them suitable for applications that require deeper levels of vacuum. Rotary vane pumps are known for their reliability, consistent performance, and durability.

When using vacuum pumps for vacuum packaging, the following steps are typically involved:

1. Preparation: Ensure that the packaging material, such as vacuum bags or containers, is suitable for vacuum packaging and can withstand the vacuum pressure without leakage. Place the product to be packaged inside the appropriate packaging material.

2. Sealing: Properly seal the packaging material, either by heat sealing or using specialized vacuum sealing equipment. This ensures an airtight enclosure for the product.

3. Vacuum Pump Operation: Connect the vacuum pump to the packaging equipment or directly to the packaging material. Start the vacuum pump to initiate the vacuuming process. The pump will remove the air from the packaging, creating a vacuum environment.

4. Vacuum Level Control: Monitor the vacuum level during the packaging process using pressure gauges or vacuum sensors. Depending on the specific packaging requirements, adjust the vacuum level accordingly. The goal is to achieve the desired vacuum level suitable for the product being packaged.

5. Sealing and Closure: Once the desired vacuum level is reached, seal the packaging material completely to maintain the vacuum environment. This can be done by heat sealing the packaging material or using specialized sealing mechanisms designed for vacuum packaging.

6. Product Labeling and Storage: After sealing, label the packaged product as necessary and store it appropriately, considering factors such as temperature, humidity, and light exposure, to maximize product shelf life.

It’s important to note that the specific vacuum level required for vacuum packaging may vary depending on the product being packaged. Some products may require a partial vacuum, while others may require a more stringent vacuum level. The choice of vacuum pump and the control mechanisms employed will depend on the specific vacuum packaging requirements.

Vacuum pumps are widely used in various industries for vacuum packaging applications, including food and beverage, pharmaceuticals, electronics, and more. They provide an efficient and reliable means of creating a vacuum environment, helping to preserve product quality and extend shelf life.

vacuum pump

Can Vacuum Pumps Be Used for Leak Detection?

Yes, vacuum pumps can be used for leak detection purposes. Here’s a detailed explanation:

Leak detection is a critical task in various industries, including manufacturing, automotive, aerospace, and HVAC. It involves identifying and locating leaks in a system or component that may result in the loss of fluids, gases, or pressure. Vacuum pumps can play a significant role in leak detection processes by creating a low-pressure environment and facilitating the detection of leaks through various methods.

Here are some ways in which vacuum pumps can be used for leak detection:

1. Vacuum Decay Method: The vacuum decay method is a common technique used for leak detection. It involves creating a vacuum in a sealed system or component using a vacuum pump and monitoring the pressure change over time. If there is a leak present, the pressure will gradually increase due to the ingress of air or gas. By measuring the rate of pressure rise, the location and size of the leak can be estimated. Vacuum pumps are used to evacuate the system and establish the initial vacuum required for the test.

2. Bubble Testing: Bubble testing is a simple and visual method for detecting leaks. In this method, the component or system being tested is pressurized with a gas, and then immersed in a liquid, typically soapy water. If there is a leak, the gas escaping from the component will form bubbles in the liquid, indicating the presence and location of the leak. Vacuum pumps can be used to create a pressure differential that forces gas out of the leak, making it easier to detect the bubbles.

3. Helium Leak Detection: Helium leak detection is a highly sensitive method used to locate extremely small leaks. Helium, being a small atom, can easily penetrate small openings and leaks. In this method, the system or component is pressurized with helium gas, and a vacuum pump is used to evacuate the surrounding area. A helium leak detector is then used to sniff or scan the area for the presence of helium, indicating the location of the leak. Vacuum pumps are essential for creating the low-pressure environment required for this method and ensuring accurate detection.

4. Pressure Change Testing: Vacuum pumps can also be used in pressure change testing for leak detection. This method involves pressurizing a system or component and then isolating it from the pressure source. The pressure is monitored over time, and any significant pressure drop indicates the presence of a leak. Vacuum pumps can be used to evacuate the system after pressurization, returning it to atmospheric pressure for comparison or retesting.

5. Mass Spectrometer Leak Detection: Mass spectrometer leak detection is a highly sensitive and precise method used to identify and quantify leaks. It involves introducing a tracer gas, usually helium, into the system or component being tested. A vacuum pump is used to evacuate the surrounding area, and a mass spectrometer is employed to analyze the gas samples for the presence of the tracer gas. This method allows for accurate detection and quantification of leaks down to very low levels. Vacuum pumps are crucial for creating the necessary vacuum conditions and ensuring reliable results.

In summary, vacuum pumps can be effectively used for leak detection purposes. They facilitate various leak detection methods such as vacuum decay, bubble testing, helium leak detection, pressure change testing, and mass spectrometer leak detection. Vacuum pumps create the required low-pressure environment, assist in evacuating the system or component being tested, and enable accurate and reliable leak detection. The choice of vacuum pump depends on the specific requirements of the leak detection method and the sensitivity needed for the application.

vacuum pump

What Are the Primary Applications of Vacuum Pumps?

Vacuum pumps have a wide range of applications across various industries. Here’s a detailed explanation:

1. Industrial Processes:

Vacuum pumps play a vital role in numerous industrial processes, including:

– Vacuum Distillation: Vacuum pumps are used in distillation processes to lower the boiling points of substances, enabling separation and purification of various chemicals and compounds.

– Vacuum Drying: Vacuum pumps aid in drying processes by creating a low-pressure environment, which accelerates moisture removal from materials without excessive heat.

– Vacuum Packaging: Vacuum pumps are used in the food industry to remove air from packaging containers, prolonging the shelf life of perishable goods by reducing oxygen exposure.

– Vacuum Filtration: Filtration processes can benefit from vacuum pumps to enhance filtration rates by applying suction, facilitating faster separation of solids and liquids.

2. Laboratory and Research:

Vacuum pumps are extensively used in laboratories and research facilities for various applications:

– Vacuum Chambers: Vacuum pumps create controlled low-pressure environments within chambers for conducting experiments, testing materials, or simulating specific conditions.

– Mass Spectrometry: Mass spectrometers often utilize vacuum pumps to create the necessary vacuum conditions for ionization and analysis of samples.

– Freeze Drying: Vacuum pumps enable freeze-drying processes, where samples are frozen and then subjected to a vacuum, allowing the frozen water to sublimate directly from solid to vapor state.

– Electron Microscopy: Vacuum pumps are essential for electron microscopy techniques, providing the necessary vacuum environment for high-resolution imaging of samples.

3. Semiconductor and Electronics Industries:

High vacuum pumps are critical in the semiconductor and electronics industries for manufacturing and testing processes:

– Semiconductor Fabrication: Vacuum pumps are used in various stages of chip manufacturing, including deposition, etching, and ion implantation processes.

– Thin Film Deposition: Vacuum pumps create the required vacuum conditions for depositing thin films of materials onto substrates, as done in the production of solar panels, optical coatings, and electronic components.

– Leak Detection: Vacuum pumps are utilized in leak testing applications to detect and locate leaks in electronic components, systems, or pipelines.

4. Medical and Healthcare:

Vacuum pumps have several applications in the medical and healthcare sectors:

– Vacuum Assisted Wound Closure: Vacuum pumps are used in negative pressure wound therapy (NPWT), where they create a controlled vacuum environment to promote wound healing and removal of excess fluids.

– Laboratory Equipment: Vacuum pumps are essential in medical and scientific equipment such as vacuum ovens, freeze dryers, and centrifugal concentrators.

– Anesthesia and Medical Suction: Vacuum pumps are utilized in anesthesia machines and medical suction devices to create suction and remove fluids or gases from the patient’s body.

5. HVAC and Refrigeration:

Vacuum pumps are employed in the HVAC (Heating, Ventilation, and Air Conditioning) and refrigeration industries:

– Refrigeration and Air Conditioning Systems: Vacuum pumps are used during system installation, maintenance, and repair to evacuate moisture and air from refrigeration and air conditioning systems, ensuring efficient operation.

– Vacuum Insulation Panels: Vacuum pumps are utilized in the manufacturing of vacuum insulation panels, which offer superior insulation properties for buildings and appliances.

6. Power Generation:

Vacuum pumps play a role in power generation applications:

– Steam Condenser Systems: Vacuum pumps are used in power plants to remove non-condensable gases from steam condenser systems, improving thermal efficiency.

– Gas Capture: Vacuum pumps are utilized to capture and remove gases, such as hydrogen or helium, in nuclear power plants, research reactors, or particle accelerators.

These are just a few examples of the primary applications of vacuum pumps. The versatility and wide range of vacuum pump types make them essential in numerous industries, contributing to various manufacturing processes, research endeavors, and technological advancements.

China wholesaler CHINAMFG Variable Pitch Air Cooled Oil Electrical Dry Rotary Screw Vane Vacuum Pump for Vacuum Industry   with high quality China wholesaler CHINAMFG Variable Pitch Air Cooled Oil Electrical Dry Rotary Screw Vane Vacuum Pump for Vacuum Industry   with high quality
editor by CX 2024-04-10