Classification and Application of vacuum pump

The rotary vacuum pump is the machine which pumping the gas out from the device, so that the pressure inside the deviceis lower thanan atmospheric pressure.In fact, the vacuum pumpis a gastransport machinery which transporting gas from subatmospheric pressure to the atmosphere environment or theenvironment of the sameatmospheric pressure. There are many types of vacuum pump, according to the working principle is basically divided into gas pump and gas trap pump types. Where in the gas pump include: waterring vacuum pumps, reciprocating pumps, rotary vane vacuum pump and so on.

The water ring vacuum pump is a pump depend chamber volume changes to achieve suction, compress ion and exhaust, so it is a variable displacement pump. Water ring vacuum pumps are rough, but in China's petroleum, chemical, electric power, textile, paper, pharmaceutical and other fields still have a large market. There are majormanufacturers such as NASH, domestic Shanghai, Shandong and other manufacturers. Reciprocating pump using the piston reciprocating motion in the pump chamber, causing the gas suction, compression and discharge. Thus, it also known as piston pump. It has been widely used in chemical, food, building materials and other industrial sectors, and mainly used in chemical and pharmaceutical food industry vacuum distillation, vacuum evaporation, vacuum drying and vacuum filtration, vacuum impregnation electrical industry, metallurgical industry, vacuum degassing and concrete vacuum operation. There are major manufacturers such as Junze in Shandong Zibo, Bo Yu in ShangHai and so on.

rotary vane vacuum pump (referred to rotary vane pump) is an oil seal mechanical pump, a low vacuum. It may be used alone, or or as a pre-vacuum pump before other high vacuum pump or high vacuum pump. It has been widely used in metallurgy, machinery, military, electronics, chemicals, light industry, petroleum and pharmaceutical production and scientific research departments. here are major manufacturers such as Rietschle, Busch, Becker and so on, among them Rietschle is the best from Germany.