Rotary vane vacuum pump (Rotary vane pump) is an oil-sealed mechanical vacuum pump. Its working pressure ranges from 101 325 to 1.33 x 10-2 (Pa) and belongs to low vacuum pump. It can be used alone or as the front pump of other high vacuum pumps or ultra-high vacuum pumps. It has been widely used in metallurgy, machinery, military industry, electronics, chemical industry, light industry, petroleum, medicine and other production and scientific research departments.
Rotary vane pump can extract the dry gas from the sealed container, and a certain amount of condensable gas can also be extracted if a gas ballast device is attached. But it is not suitable for extracting gases with excessive oxygen, corrosive to metals, chemical reaction to pump oil and particulate dust.
Rotary vane pump is one of the most basic vacuum acquisition equipment in vacuum technology. Rotary vane pumps are mostly small and medium-sized pumps. There are two kinds of rotary vane pumps: single-stage pump and double-stage pump.
The so-called two-stage structure is to connect two single-stage pumps in series. Generally, it is made into two stages to obtain higher vacuum.
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