Grinder and pump unit

Claim 1

A grinder-pump unit comprising a disc keyed to a driving shaft, a pair of bars freely rotatably secured at radially spaced points to a first surface of said disc in sliding overlying relation thereto, said disc surface including abutments for retaining said bars in spaced parallel relation when the disc rotates, the outward end of each of said bars being shaped to conform with the periphery of said disc, a second opposite surface of said disc serving as pump means wherein the second surface has a hub and a plurality of vanes disposed perpendicularly of said second surface in tangential relation to said hub, and further wherein the disc is transversely dIsposed in a pipe section having internally formed peripheral slots allowing restricted flow from the first surface to the second surface of the disc thereby insuring nonclogging action of the pump, a horizontally oriented discharge port communicating with the vanes, and a flapper check valve with a memory disposed in the port for gating discharge therethrough, the valve being slightly offset from a true vertical position for realizing the combined benefits of horizontal discharge as well as subjecting the valve to gravity which reinforces the valve memory and tightly seals the port in the absence of discharge.