Nozzle insert for boosting pump inlet pressure

摘要

A pump assembly includes a pump housing including an inner surface, a pump inlet and an excess flow passage, a filter assembly including a spout extending into the housing, and an insert located within and secured to the housing, and including a first surface spaced from the inner surface and producing therebetween an annular nozzle communicating with said excess flow passage, the nozzle directing a first fluid stream exiting the excess flow passage toward a second fluid stream exiting the spout, the fluid streams flowing toward the pump inlet.

主权项

1. A pump assembly comprising:
a housing including a conical inner surface and an excess flow passage; a spout directing a fluid stream into the housing; an insert press-fittingly secured to the housing, including a cylindrical outer surface and an end surface forming an edge at said outer surface, the edge spaced from said inner surface and producing therebetween a nozzle directing a first fluid stream from the excess flow passage toward said fluid stream.