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Centrifugal pump

  • US 4,586,872 A
  • Filed: 12/07/1983
  • Issued: 05/06/1986
  • Est. Priority Date: 12/24/1982
  • Status: Expired due to Fees
First Claim
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1. A centrifugal pump, comprising:

  • a rotor mounted on a rotor shaft;

    roller bearing means for supporting said shaft;

    a bearing flange housing surrounding the shaft and containing the rolling bearings therein supporting the shaft;

    a spiral housing for the rotor which, together with parallel wear walls radially abutting the spiral housing, enclose the rotor;

    a two-piece enclosure for the spiral housing and wear walls comprising inlet side and back-side retaining plates;

    means for pulling the retaining plates toward one another so as to create a clamping action to retain the parallel wear walls and spiral housing in bolt-free connecting abutment with one another;

    said back-side retaining plate having an inside aperture, and a shaft protection sleeve surrounding the shaft and positioned in said aperture;

    said bearing flange housing having an end flange and an aperture in said end flange; and

    said shaft protection sleeve having means for aligning said back-side retaining plate with said bearing flange by an abutting cooperation with an inside edge wall of the apertures of the end flange and back-side retaining plate.

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