Screw rotor of oil-free screw vacuum pump

Experts and scholars in domestic vacuum industry have long recognized that oil-free screw vacuum pump is a dry-type vacuum pump with broad application prospects and huge market potential. Compared with the traditional oil seal pumps such as rotary vane pump and slide valve pump, the oil-free screw vacuum pump has the characteristics of no oil pollution, strong ability to remove water vapor and solid dust particles; compared with liquid seal pump such as water ring pump, screw pump has the characteristics of high vacuum degree, low energy consumption and no waste liquid when extracting soluble steam; compared with claw pump and multi-stage pump, oil-free screw vacuum pump has the advantages of high vacuum, low energy consumption and no waste liquid when extracting soluble steam Compared with other dry vacuum pumps, such as Ci pump and scroll pump, screw pump has the characteristics of wide pumping speed range, simple and compact structure, non friction of pumping cavity components and long service life. 

Screw rotor is the most important pumping part in screw vacuum pump, which directly determines the working performance and service life of the pump. Its manufacturing cost accounts for nearly half of the total cost of the whole screw pump. The design and manufacture of screw rotor is one of the key technologies in the production of screw pump, and it is also a common technical problem faced by domestic enterprises in the process of developing and developing screw vacuum pump.

Because the design theory of screw rotor of screw vacuum pump is not mature enough, and there are some factors of technical confidentiality, the public information about the design of screw vacuum pump rotor is very rare. Most of the researchers and technicians engaged in the research and development of screw vacuum pump in different units in China carry out research work from the most basic principle, and find and solve a number of technical problems encountered in the development work, which restricts the speed and level of domestic screw vacuum pump development and production.

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industrial vacuum pumps,vacuum furnaces