screw pumps, also known as single screw pumps, helical rotor pumps, rely on the intermeshing of a screw and a bushing to produce a change in volume in the suction and discharge chambers to transport liquids. Due to the strong adaptability of this pump to the medium, smooth flow, good suction performance, pressure pulsation is small, in addition to transporting a variety of flowable media, but also can be transported to highly viscous media, containing hard suspended particles or solid particles of the media, media containing fibers.