Zjb-70 Roots Vacuum Pump for Chemical Industry

Zjb-70 Roots Vacuum Pump for Chemical Industry

Pump description:

Design ZJ CZPT Booster Pump, also known as a Roots pump, is a volumetric pump.
It employs a pair of rotors, identical and in eight-determine with particular clearance in between them
in the pump housing, rotating at the exact same velocity in reverse instructions to perform
operate of suction and discharge of fuel. The two rotors are supported by rolling bearings
in the conclude addresses of the pump, rotating at large pace and are stored at a
fixed relative place by a pair of timing gears. The stop clearance between rotors and
finish covers are mounted by adjustable steel shims between the bearing housings and the
conclude go over at the mounted stop, which makes certain one-route expansion of the rotor when
temperature rises throughout its operation.

4 sets of interior seals (also recognized as piston ring) in the two finish handles avert lube oil
getting into into the pump housing. The shaft seal at the entrance-end include, also referred to as as
framework oil seal or shaft seal, prevents leakage of air into the pump housing.

In order to minimize temperature of the pump, all designs of pumps (assume the two
smallest versions) are outfitted with a gearbox cooler and entrance-end protect cooler.

Power is transmitted via a coupling or V-belt from the motor to the driving shaft of
the pump and then by way of synchronizing gears to the pushed shaft

Technical specs:


   Model Suction potential         (L/S)

Limit vacuum




Motor Electricity


Inlet Dia.


Outlet Dia.




Recommended backing pump(model)
   ZJ-70          70      6×10-2   2780         one.5     80      50      87       2X-8
  ZJB-70      5×10-two      100
  ZJ-150A          150      6×10-two   2900          3     one hundred      100      198       2X-fifteen
  ZJB-one hundred fifty      5×10-two      215
  ZJ-three hundred          300      6×10-two   1450          4     a hundred and fifty       150      490       2X-30A
  ZJB-300      5×10-2      480
  ZJ-600          600      6×10-2   2900         5.five     one hundred fifty       one hundred fifty      490       2X-70A
  ZJB-600      5×10-two      503
  ZJ-1200A         1200      6×10-2    1450          11      300       three hundred     1550       2X-70A            (2sets)
  ZJB-1200      5×10-two      250       250     1580

The main  advantage  of Roots  vacuum pump  is that  it can  operate  with high  pumping speed under  lower suction  pressures, nevertheless,  has to  be backed by  a backing  pump.Under  regular functioning circumstances, it is  permissible to not add  by-move pipes.Roots vacuum pump need to not function with a greater-pressure  big difference than allowable,otherwise  overheating   and   overload  will   cause  damage   of  Roots   vacuum  pump.
Therefore, suitable backing pump and needed safety products should be considered.Oil sealed mechanical  pump is usually  selected as   the fore   vacuum   pump.  Other   types   of backing   pumps   may   be   used   where    their requirement for ultimate vacuum is not too  rigid. Particularly, when gas  pumped that contains large amount of  vapor, h2o-ring vacuum pump  maybe   an  ideal   option  though   ultimate  vacuum achieved is on the lower aspect.

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Zjb-70 Roots Vacuum Pump for Chemical Industry