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Screw pump you really understand thoroughly?
[Asia Pump Network News] Screw pump is a positive displacement pump, was born in 1931. Because of its unique structure, self-priming capability, high efficiency, small size, reliable work, and can transport a wide range of viscosity media, screw pump is widely used in petrochemical, shipping, electric power, mechanical and hydraulic systems, food, paper, Sewage treatment and other industrial sectors. Screw pump you really understand thoroughly? As energy-saving and material-saving products, screw pump applications in our country are constantly expanding, the demand for growing year by year, more and more attention. Although there is still a gap between China's domestic screw pump and foreign professional companies, with the investment in research and development and application of screw pumps in our country, the screw pump is bound to achieve good results in replacing the traditional technologies and achieve energy saving Saving material benefits. Although the family of screw pumps can not be called a huge, but according to the screw standard, it can be divided into different types. This article focuses on the most commonly used single screw pump, twin screw pump and three screw pump. 1, single-screw pump single-screw pump is a new type of internal rotation rotary displacement pump. The main working parts are eccentric screw (rotor) and fixed bushings (stator). Compared with other pumps, single-screw pumps have their own unique advantages: Compared with centrifugal pumps, single-screw pumps do not need to install valves, and flow is a steady linear flow. Compared with the plunger pump, single screw pump has better self-suction capacity. Compared with the diaphragm pump, single screw pump can convey a variety of mixed impurities, containing gas and solid particles or fibers of the media, but also convey a variety of corrosive substances. Compared with the gear pump, single screw pump can deliver high viscosity substances. Unlike plunger pumps, diaphragm pumps and gear pumps, single-screw pumps are used for filling and metering medications. 2. Twin screw pump From a structural point of view, twin screw pump is an external meshing screw pump. It uses two screws that mesh with each other and do not touch each other to pump liquid. In the structure of the twin screw pump is also very complete, there are horizontal, vertical, with heating jacket and other types of particles can be transported with low viscosity or high viscosity media, adjust the screw spacing according to particle size, use the correct material, Many corrosive media can be delivered. Twin screw pump as a positive displacement pump, pump suction chamber should be closely spaced with the discharge chamber. This requires that 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. (Editor: Shuangling) Further reading: 2016 Xiamen Industry Fair 2016 Beijing Petroleum Exhibition Pumps Valves Pipe Fittings Exhibition Information 2016 Exhibition Information 2016 China World Expo