Screw pump
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What is the structure and principle of a screw pump?
The questions raised by the original poster can actually be found on the Internet. A screw pump is a type of positive-displacement pump; there are single-screw, double-screw, and triple-screw pumps. Screw pumps rely on the changes in volume of the closed space formed between the intermeshing screws and the pump casing to draw in and discharge liquid. A screw pump consists of: 1) the casing section, 2) the rotor section, 3) the bearing section, 4) the shaft seal section, 5) the safety valve section; 6) some screw pumps also have synchronous gears at the back
The working principle of a screw pump is that when the electric motor drives the pump shaft to rotate, the screw rotates around its own axis while also rolling along the inner surface of the sleeve, thereby creating a sealed chamber within the pump. With each rotation of the screw, the liquid in the sealing chamber is pushed forward by one pitch. As the screw continues to rotate, the liquid moves in a spiral manner from one sealing chamber to another, eventually being forced out of the pump body. The screw pump is a new type of machine for transporting liquids, featuring advantages such as a simple structure, safe and reliable operation, ease of use and maintenance, continuous and uniform liquid output, and stable pressure.