Pump diffuser anti-rotation and alignment assembly
AssigneePentair Flow Technologies, LLC
InventorsAditya Vohra, Deepak Tyagi, Prasun Kumar Pandey
Life of this patent
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Abstract
A pump including an impeller, a housing having an alignment lug and an alignment collar disposed on an inner wall, and a diffuser having a plurality of vanes, each with a vane head on its trailing edge, the vane head including a radial alignment surface. A first vane includes a first vane head with a notch and a first radial alignment surface. The notch is configured to receive the alignment lug to limit rotational movement of the diffuser with respect to the housing, and the first radial alignment surface is positioned adjacent to the alignment collar to limit lateral movement of the diffuser with respect to the housing.
Claims20
A pump comprising:
- an impeller;
- a pump housing having
- an alignment collar extending axially from an inner surface of the pump housing, and
- an alignment lug extending axially from the inner surface of the pump housing and extending radially relative to the alignment collar;
- a diffuser having a plurality of vanes, each vane of the plurality of vanes has a vane head on a trailing edge of the vane, the vane head including a radial alignment surface;
- a first vane of the plurality of vanes includes a first vane head with a notch and a first radial alignment surface;
- the notch is configured to receive the alignment lug to limit rotational movement of the diffuser with respect to the pump housing;
- and
- the first radial alignment surface is positioned adjacent to the alignment collar to limit lateral movement of the diffuser with respect to the pump housing.
A method of assembling a pump, comprising:
- seating a diffuser against an outlet housing of a pump housing;
- engaging a notch on a first vane of the diffuser with an alignment lug projecting axially from an inner surface of the outlet housing and radially relative to an alignment collar projecting axially from the outlet housing such that rotation of the diffuser is limited relative to the outlet housing;
- and
- coupling the outlet housing to an inlet housing to seal the pump housing.
A pump diffuser for mounting in a pump housing, the pump diffuser comprising:
- a front portion and a rear portion, the rear portion having a plurality of vanes, each vane having a vane head on a trailing edge of the vane, the vane head including a radial alignment surface and wherein a first vane of the plurality of vanes includes a notch,
- wherein
- the first vane is configured to engage an alignment collar extending axially from an inner surface of the pump housing to limit lateral movement of the pump diffuser relative to the pump housing, and
- the notch is configured to engage an alignment lug extending axially from the inner surface of the pump housing and extending radially relative to the alignment collar to limit rotational movement of the diffuser with respect to the pump housing.
Dependencies are inferred from the claim text.