Screw rotor end face profile and screw vacuum pump equipped with the screw rotor
The screw rotor end face profile is formed by connecting five curve segments, which solves the problems of high precision requirements and insufficient sealing in the existing technology, and achieves higher sealing performance and thermal deformation resistance, making it suitable for the manufacture of screw vacuum pumps.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGDONG KENFLO PUMP CO LTD
- Filing Date
- 2026-06-09
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies have problems such as extremely high machining accuracy requirements, sealing risks, and significant thermal deformation impact in the design of screw rotor end face profiles, which increase manufacturing difficulty and result in poor sealing performance.
The screw rotor end face profile is formed by smoothly connecting five curve segments from beginning to end. These segments include the tooth root arc segment, the envelope segment, the involute segment, the tooth tip arc segment, and the long-amplitude outward swing segment. Parametric equations are used to ensure a smooth transition, reduce machining accuracy requirements, and improve sealing performance.
It reduces the precision requirements of blade profiles during the production of screw rotors, improves the sealing performance and robustness of screw vacuum pumps, and enhances their resistance to thermal deformation.
Smart Images
Figure CN122407541A_ABST
Abstract
Citation Information
Patent Citations
Design method of screw rotor end face molded line and screw rotor end face molded line
CN117521280A