| 摘要 |
FIELD: engines and pumps.SUBSTANCE: invention relates to high-vacuum pumps. Proposed pump consists of housing motor running in bearings to drive the pump rotor with rotor vanes and stator vanes arranged between the latter to make a turbomolecular stage. Pump rotor inner part seat is shaped to Morse cone with four-start square thread with variable cross-section of thread root. Stator stationary pump part is separated from pump rotor by antifriction bush made of graphite-teflon material.EFFECT: higher capacity, reliable and long-term operation.4 cl, 2 dwg |
