Screw work, the sealed space after the liquid is drawn into the pump shell and screw off, when the active screw rotation, increase the volume of screw pump pressure in the extrusion screw sealing screw pump, axial movement. Since the screw is rotating at constant speed, the flow rate of the liquid is uniform.

From the above working principle, it can be seen that the screw pump has the following advantages:

1) a wide range of pressure and flow. The pressure is about 3.4-340 kg, the force is /cm 2, and the flow rate is 100cm3/;

2) a wide range of liquid delivery and viscosity range;

3) because of the low inertia force of the rotary parts in the pump, high rotational speed can be used;

4) inhalation performance, with self-priming capacity;

5) uniform flow continuous, small vibration, low noise;

6) compared with other rotary pumps, the inlet gas and dirt are not very sensitive;

7) solid structure, easy installation and maintenance.

Not only has the advantages of screw pump, screw pump screw machining and assembly demanding; more sensitive to the change of fluid viscosity on pump performance but these shortcomings and can not affect the use of screw pump, screw pump manufacturers hope this news can let everybody understand the screw pump, has a more profound understanding in the use of screw the pump.