Structure and Working Principle

This page describes both basic and detailed information regarding Heishin PC Pumps to provide you with a more in-depth understanding of these products.
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Heishin PC Pump Structure

Heishin PC Pumps are classified as rotary positive-displacement pumps consisting of a single eccentric screw. They provide a non-pulsating, metered conveyance.

Cavity (sealed chamber) movement

The heart of a Heishin PC Pump consists of a rotor (male screw) and a stator (female screw). When the rotor is inserted into the stator, a series of separate sealed chambers known as "cavities" is produced between them. As the rotor turns in the stator, strong suction is generated, which causes cavities to move to the discharge end. The fluid that is sucked into each cavity is thus continuously conveyed forward together with the sealed chamber itself.

Cross-sectional area of each cavity is always constant

As the cross-sectional area of each cavity is constant at any given moment regardless of the position of the rotor, the volume of material discharged is always fixed. This means that the discharge volume per unit time is directly proportional to the rotational speed of the rotor. Moreover, it is possible to reverse the direction of suction/discharge simply by changing the direction of rotor rotation.