Rotary Screw Pump

Rotary Screw Pump

Suitable for medium/high pressure heavy load pump
Product Features: 1. The conveying medium has a wide range and permits the medium to contain a certain amount of impurities.
2. The integrated design of screw and screw sleeve improves the rigidity and deflection of the shaft, and ensures stable and reliable operation.
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Product Details

Suitable for medium/high pressure heavy load pump

Product Features:

1. The conveying medium has a wide range and permits the medium to contain a certain amount of impurities.

2. The integrated design of screw and screw sleeve improves the rigidity and deflection of the shaft, and ensures stable and reliable operation.

3. Selection of various cooling modes for bearings can better protect the bearings and prolong their working life.

4. Structural optimization design allows short-term dry operation.

5. It has strong self-priming ability and low NPSHr value, and can transport a certain proportion of vapor-liquid mixture.

6. Selection of various cooling modes for bearings can better protect the bearings and prolong their working life.


Performance  Viscosity:  2.0~100000 mm2/s

Flow:0~300 m3/h

Maximum Pressure:6.3 Mpa

Maximum Temperature:180 ℃


Pump (high temperature twin screw pump, large flow twin screw pump) work is divided into the following stages:

1. Inhalation, when the liquid continuously moves along the inhalation pipeline;

2. Rotating screw transfers energy to working liquid.

3. Pressing out, the liquid is discharged from the pump with the pressure necessary to overcome all the resistance of the extrusion pipeline system.

In the above three stages, the most important stage is to ensure that the pump suction conditions in order to work properly, which is an important condition for pump work, otherwise there will be cavitation, that is, causing vibration, noise and other issues.


Twin-screw pumps are never allowed to operate in the case of material breakage. Once it happens, rubber stator will burn out because of dry friction and instantaneous high temperature. Therefore, the crusher is in good condition and the grille is smooth, which is one of the requirements for the normal operation of screw pumps. For this reason, some screw pumps also install material breaking shutdown devices on the pump body. When material breakage occurs, due to the characteristics of self-suction function of screw pumps. Vacuum will be generated in the cavity, and the vacuum device will stop the screw pump.

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