Wear plate for a centrifugal pump

Abstract

A wear plate for use in a centrifugal pump is structured with at least one cutting element positioned at the inner bore of the wear plate, the cutting element or elements being positioned to impact the cutting edge of the vanes of an impeller and oriented in a direction relative to the rotation of the impeller so that the wear plate cutting element or elements can capture the solids in a processed fluid and hold them in place until the solids can be cut by the impeller vane or vanes, the wear plate cutting elements further being structured to be self-sharpening.

Description

[0001] Cross References to Related Applications [0002] This application is a non-provisional application claiming priority to Provisional Patent Application Serial No. 60 / 967,440, filed September 4, 2007. technical field [0003] The present invention relates to centrifugal pumps, and in particular to a wear plate for a centrifugal pump having an inner bore edge configured to cut solids. Background technique [0004] Centrifugal pumps are constructed with a pump casing in which an impeller is positioned for rotation. To maximize pump efficiency, the impeller is positioned very close to the inner surface of the pump casing to provide minimal tolerance between the impeller and the pump casing. When using this type of pump to handle fluids with solid content, the solids can corrode or wear the inner surfaces of the pump casing, resulting in reduced pump efficiency. [0005] It is known in the pump industry to position wear plates between the impeller and the inner surface o...

AI Technical Summary

Problems solved by technology

This arbor arrangement can prove capable of reducing and handling solids, but can also cause solids, especially fibrous solids, to accumulate at the impeller inlet

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