A vacuum pump refers to a device or equipment that uses mechanical, physical, chemical, or physicochemical methods to evacuate a container to obtain a vacuum. Simply put, a vacuum pump is a device that uses various methods to improve, generate, and maintain a vacuum in a closed space.
According to the working principle of vacuum pumps, they can be basically divided into two types, namely gas capture pumps and gas transfer pumps. It is widely used in industries such as metallurgy, chemical, food, and electronic coating.
With the development of vacuum applications, there have been many types of vacuum pumps, with pumping speeds ranging from a few tenths of a liter per second to hundreds of thousands or millions of liters per second. With the increasing demand for pressure range in the application of vacuum technology in production and scientific research fields, most vacuum pumping systems need to be composed of several vacuum pumps to jointly extract air in order to meet the requirements of production and scientific research processes. Due to the wide range of working pressures involved in vacuum application departments, no type of vacuum pump can be fully applicable to all working pressure ranges. Different types of vacuum pumps can only be used according to different working pressure ranges and different working requirements. For the convenience of use and the needs of various vacuum processes, sometimes various vacuum pumps are combined according to their performance requirements and applied in a unit form.
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