Durable Sludge Transfer Screw Pump for Sewage Treatment Plant

screw pump is a new type of pump which works according to the principle of rotary meshing volumetric pump. The main working parts are eccentric screw (rotor) and fixed bushing (stator). Due to the special geometry of the two parts, separate sealed cavities are formed respectively. The medium flows evenly from the axial direction. The internal flow rate is low, the volume remains unchanged, and the pressure is stable. Therefore, no eddy current and agitation will occur. The output pressure of each stage of the pump is 0.6MPa, the lift is 60m (clean water), and the self-priming height is generally 6m. It is suitable for conveying medium temperature below 80 ºC (special requirements can reach 150 ºC). Because the stator is made of a variety of elastic materials, the pump is not competent for the transportation of high viscosity fluid and medium containing hard suspended particles or fiber. Its flow is proportional to the speed. Coupling can be used for direct transmission, or speed regulating motor, V-belt, gearbox and other devices can be used for speed change. The pump has few parts, compact structure, small volume and simple maintenance. The rotor and stator are vulnerable parts of the pump, with simple structure and easy assembly and disassembly.