Cantilever type high rate turbine vacuum pump and its evacuation method

Cantilever type high rate turbine vacuum pump and its evacuation method

CN
  • CN 101,122,294 A
  • Filed: 09/07/2007
  • Published: 02/13/2008
  • Est. Priority Date: 09/07/2007
  • Status: Active Application
First Claim
Patent Images

1. cantilever type high rate turbine vacuum pump, it is characterized in that:

  • it comprises gear speedup case (9), independent pump head and high speed rotor, and gear speedup case (9) adopts the single-stage speedup, and the axle on the gearwheel (12) connects with prime mover;

    Independent pump head is discrete in gear speedup case (9) both sides or one-sided, independent pump head is a split-type structural, comprise suction port (1), spiral case endosome (5), the quiet wheel cap of impeller (6), spiral case (4) and sealing gland (7), suction port (1) and the quiet wheel cap of impeller (6) are installed in the last one of forming of spiral case endosome (5) and are embedded in the spiral case (4), by spiral case endosome (5) with spiral case (4) cavity is combined to form Diffuser and medium goes out runner, sealing gland (7) is installed in spiral case (4) side by flange;

    High speed rotor comprises high speed gear shaft (10), thrust button (11), impeller (3) and fastening screw trip bolt (2), by the support of the sliding bearing (8) on the gear speedup case (9) and by gearwheel (12) transmission, thrust button (11) is fixedly mounted on and is positioned at gearwheel (12) both sides on the high speed gear shaft (10), and impeller (3) cantilever is installed in high speed gear shaft (10) end.

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