Low Pressure Screw Pump

Low Pressure Screw Pump

1.Flow and speed are in direct proportion, automatic flow adjustment can be achieved by speed controller.
2.Various shaft sealing options can be realized due to composite design of sealing chamber
3.Opposite direction transfer in short term can be realized due to composite design of the flange and bearing.
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Product Details

1.Flow and speed are in direct proportion, automatic flow adjustment can be achieved by speed controller.

2.Various shaft sealing options can be realized due to composite design of sealing chamber

3.Opposite direction transfer in short term can be realized due to composite design of the flange and bearing.

4.Various stator and rotor material pairing for various working conditions.

5.Stable flow and pressure, no pulsation, low noise and strong self-priming ability.

6.Wide application scope for various fluid medium, including high viscosity, solid content, fiber, suspended impurities.

7.Use oil instead of traditional grease for bearing to enable more sufficient and effective bearing lubrication


With the sustained and rapid development of China's economy, the continuous increase of urban and industrial processes, the increasing environmental pollution and the increasing attention paid to environmental protection by the state, RSP participates in water treatment and environmental protection with advanced single screw pump products, and with special design and excellent functions, it is used in biochemical treatment of sewage sludge, sludge digestion treatment and sludge concentration. As well as sludge mechanical dewatering process, RSP continues to provide customers with ideal single screw pump solutions and products and services of high quality and low price.


Performance:Flow  180 m3/h

Maximum Pressure:2.4 Mpa

Maximum Temperature:220 ℃


Fault treatment of single screw pump:

Rod peeling off

The drop of rod string is also a common failure phenomenon of screw pump, which is characterized by low operating current, no fluid production at wellhead, and disconnection of positive and negative circulation bushing. The production can be restored by buckling or downloading the rod salvage tool. There are also two cases when the sucker rod falls off, one is buckle, the other is captive buckle. The reason for tripping is that the residual energy of torsional deformation of sucker rod string is released after shutdown, which causes the reversal of sucker rod string. It can be prevented by installing anti-inversion device on the ground and sucker rod string. There are three reasons for rod string seizure: one is that when heavy oil wells start up again after a long shutdown, the starting torque is very large, which damages the threads; the other is that the oil is very heavy, and the screw pump works under high torque for a long time, which damages the threads; the other is that the stator is degummed and the rotor is not moving.

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