LG single screw pump is a new type of pump that works on the principle of pull-rotary meshing positive displacement. The main working parts are eccentric screw (rotor) and fixed bushing (stator). Due to the special geometry of the two components, a separate sealed cavity is formed, and the medium flows uniformly from the axial direction, the internal flow rate is low, the volume remains unchanged, and the pressure is stable, because there is no vortex and agitation.