The impeller pump drives the liquid at a high speed through the impeller to transfer the mechanical energy to the liquid, thereby achieving the purpose of conveying the liquid. Impeller pumps include: centrifugal, mixed flow, axial flow, vortex.

The screw pump is a positive displacement rotor pump. It relies on the volume change of the sealed chamber formed by the screw and the bushing to draw and discharge the liquid. The screw pump is divided into single screw pumps, double, triple and five screw pumps according to the number of screws.The screw pump is characterized by stable flow, small pressure pulsation,self-priming capability, low noise, high efficiency, long life and reliable operation.

Both the impeller pump and the screw pump have their own advantages.

Working efficiency, impeller pumps are generally higher than screw pumps.

Working pressure, screw pumps are generally higher than impeller pumps.

Working flow, impeller pumps are generally higher than screw pumps.

Work reliability, screw pumps are generally better than impeller pumps.

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