Screw pump

Screw pump

  • CN 101,351,646 B
  • Filed: 12/04/2006
  • Issued: 11/06/2013
  • Est. Priority Date: 12/13/2005
  • Status: Active Grant
First Claim
Patent Images

1. the screw pump of a pump gas, described screw pump comprises the stator with fluid input and fluid output, described stator covers with externally threaded the first rotor and the second rotor, thereby described the first rotor and the second rotor are assembled in above corresponding axle and are suitable for flowing to the fluid of fluid output from fluid input to turning compression in stator, the axial section of described rotor changes to fluid output from fluid input, and described screw thread has the pitch that increases towards fluid output.

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