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VACUUM ›› 2025, Vol. 62 ›› Issue (4): 34-38.doi: 10.13385/j.cnki.vacuum.2025.04.06

• Vacuum Acquisition System • Previous Articles     Next Articles

Research of the Linear Profile Rotor of Double Screw Vacuum Pump

WANG Jianguo1, CHEN Chengquan2, CHEN Lingdan1, LI Jinjian2, ZHANG Baofu1,2   

  1. 1. Madebao Vacuum Equipment Group Co., Ltd., Taizhou 318000, China;
    2. Taizhou Vocational & Technical College, Taizhou 318000, China;
  • Received:2025-04-02 Online:2025-07-25 Published:2025-07-24

Abstract: A kind of linear profile rotor screw vacuum pump was proposed , and the main structural parameters of the rotor profile of the LG70 screw vacuum pump were given. The new screw pump processing method was analyzed and improved. Based on the rotor profile, the actual product production was carried out, and the pumping speed and other performance indexes were compared with the original cycloidal rotor screw pump. The results show that the new design is characterized by high volume efficiency, convenient processing and accurate positioning, and the efficiency of production and pumping of the linear rotor screw pump are improved compared with the cycloidal rotor screw pump.

Key words: screw vacuum pump, rotor profile, linear profile rotor, assembly clearance

CLC Number:  TB752+.26

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