Multi stage centrifugal pump is a centrifugal pump, but also rely on the rotation of the impeller in the acquisition of centrifugal force, so that the material. When the gas density reaches the working range of the mechanical vacuum pump, the vacuum pump is drawn out.
In the mining and metallurgical industry, multi-stage pump is also the most used equipment. In agricultural production, the pump is the main irrigation and drainage machinery. In the chemical and oil sector production, raw materials, semi-finished products and finished products are mostly liquid, and semi-finished and finished products to raw materials, need to go through a complex process, to pump and provide transportation of liquid chemical reaction of the pressure and flow role in these processes.
In addition, the pump is used to adjust the temperature in a lot of devices. In national defense construction, aircraft flap, rudder and landing gear of the adjustment, warships and tanks turret rotation, the submarine's ups and downs and so need to pump, to pump the mine drainage, in the mineral processing, smelting and rolling process, need to pump to the water supply and other such as city water supply and drainage, water steam locomotive and the machine tool lubrication and cooling, the textile industry in the transmission fluid and dye bleaching, pulp paper industry in the transportation and food industry in the transportation of milk and sugar foods, we need to have a lot of pump.
In short, whether it is aircraft, rockets, tanks, submarines, or drilling, mining, trains, ships, or everyday life, everywhere need to use the pump, running everywhere. In the power sector, nuclear power plants require nuclear main pump, two pumps, three pumps, thermal power plant needs a large number of. In the shipbuilding industry, with ocean going vessels on pump generally in more than 100, the type of every kind of type is also the pump for transporting liquid is various, such as transport of water (water, sewage), oil, alkali liquid, suspension, and the liquid metal in China's vast rural areas of the original pieces, every year rural areas need a lot of pumps, agricultural pumps are generally accounted for more than half of the pump output. Some are high pressure and radioactive liquid; and some even seek the pump without any leakage, such as the Atlantic's shield pump.