Vacuum pumps are widely used in industrial sectors, such as light bulb manufacturing, electronic tubes, food packaging, and semiconductor device manufacturing. Vacuum distillation, vacuum impregnation, ion nitriding, vacuum drying, vacuum carburizing, vacuum quenching, vacuum casting, etc. Under vacuum conditions, due to the small number of gas molecules, the harmful effects of gas can be avoided.
For example, heat treatment in vacuum can prevent oxidation and gas from penetrating into the metallographic structure, thereby improving the quality of parts; maintaining high vacuum in electronic devices can avoid the impact of electronic movement; maintaining high vacuum in vacuum packaging can improve the shelf life of food. In modern cutting-edge science and technology, vacuum technology is an indispensable means, such as high-energy accelerators, controlled thermonuclear reactions, universe simulation and other projects all require high vacuum or ultra-high vacuum technology.
There are many types of vacuum pumps, including mechanical vacuum pumps (such as reciprocating vacuum pumps, oil-sealed mechanical vacuum pumps, roots vacuum pumps, turbo molecular pumps, water ring vacuum pumps, etc.), jet vacuum pumps (such as water vapor jet pumps, water jet pumps, atmospheric jet pumps, Oil booster pumps, oil diffusion pumps, etc.), as well as physicochemical adsorption pumps (such as titanium pumps, molecular sieve adsorption pumps, cryogenic pumps, etc.). Mechanical vacuum pumps are mainly used in the machinery industry sector, and other types of pumps are less commonly used.
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