Iqbal S Husain

US Patent:

47783362, Oct 18, 1988

Filed:

Jul 9, 1987

Appl. No.:

7/071626

Inventors:

Iqbal Husain - Bensenville IL

Assignee:

Weil Pump Company - Chicago IL

International Classification:

F04D 702

US Classification:

415121B

Abstract:

An improved cutter pump subassembly for use in a centrifugal pump adapted for chopping and pumping an influent liquid containing solids is disclosed. In such a cutter pump, a suction inlet, discharge outlet, means for driving an impeller and a cutter pump subassembly are provided. The improved cutter pump subassembly comprises a housing, an impeller and a stationary cutter. The housing defines a pump chamber and contains the impeller. The housing also contains a centrally located suction aperture that receives the influent liquid and a spiral channel that conducts the liquid out of the housing. The impeller has a shroud and impeller vanes and is rotatably driven by the means for driving an impeller. The impeller vanes each have an outer circumferential end and an inner shearing edge. The stationary cutter is secured adjacent the suction aperture.