Pneumatic pump company, the common vacuum pumps are: dry screw pump, water ring pump, reciprocating pump, slide valve pump, vane pump, roots pump and diffusion pump, they are the main types of vacuum pumps used in various industries of national economy in China. In recent years, with the sustained and rapid development of China's economy, vacuum pump related downstream application industry has maintained a rapid growth momentum.

At the same time, due to the continuous expansion of vacuum pump application and other factors, China's vacuum pump industry has also made sustained and rapid development. Vacuum pump is a device or device, which uses mechanical, physical, chemical or physical-chemical methods to obtain vacuum by pumping the evacuated container. It is generally believed that vacuum pump is a device to improve, produce and maintain vacuum in a certain enclosed space by various methods.

According to the working principle of vacuum pump, vacuum pump can be divided into gas collection pump and delivery pump. It is widely used in metallurgy, chemical industry, food, electronic electroplating and other industries. With the development of vacuum applications, the types of vacuum pumps have also been greatly developed, and their speed has increased from 0.0 liters per second to hundreds of thousands of liters, or even millions of liters. Vacuum technology is widely used in production and scientific research.

In order to meet the needs of production and scientific research, most of the vacuum pumps need to be combined into a vacuum pumping system. Because of the wide working pressure range of vacuum application departments, any type of vacuum pump can not be completely suitable for all working pressure ranges.

Different vacuum pumps can only be used according to different working pressure range and different working requirements. In order to be easy to use and meet the needs of various vacuum processes, various vacuum pumps are sometimes combined according to their performance requirements for unit type application.