The main types of screw pumps are: single screw pump, twin screw pump and three screw pump, with the use of such products in many fields have been more affirmed, on the screw pump construction has been More people's attention and attention. Screw pump structure Screw pump is a positive displacement pump, which mainly consists of a rotating shaft, bearing gland, single row bearings, brackets, double row bearings, extrusion tube, rubber sheath, steel card, tray, Hollow shaft, sleeve, suction pipe, screw composition. It relies on the volume change of the sealed chamber formed by the screw and bushing to draw and discharge liquid. Screw pump according to the number of screws into a single screw pump, double, triple and five screw pump. Screw pump is characterized by smooth flow, small pressure pulsation, self-priming capability, low noise, high efficiency, long life, reliable work; and its outstanding advantage is the transmission medium is not formed vortex, the viscosity of the medium is not sensitive to Transport high viscosity media. The screw pump is an externally-engaged screw pump that draws liquid using two screws that mesh with and do not touch each other. Screw pump as a positive displacement pump, pump suction chamber should be closely spaced with the discharge chamber. Therefore, the pump body and the outer surface of the screw and screw and screw clearance should be as small as possible. At the same time, the screw and the pump body, the screw and the screw also form a sealed chamber with each other to ensure airtightness, otherwise liquid may flow backwards from the gap. It has the advantages of good suction performance, self-priming capability, uniform and continuous flow, small vibration and low noise; it has the advantages of solid structure, easy installation and maintenance, wide range of pressure and flow, wide range of liquid types and viscosity, These characteristics make it has a very good market competitiveness. Through the analysis of the structure of the screw pump, we can have a comprehensive understanding of such products, with such products in the sewage treatment, waste incineration and other fields continue to strengthen. Higher requirements for such products, I believe that with the joint efforts of researchers and businesses, the future of such products will be even more bright.
