초록 ▼

A tapered auger shredder which includes a frame defining a grinding chamber with a front wall having a centrally-located discharge opening and a rear wall mounting a powered auger screw having a flighted shaft extending through the chamber and into the discharge opening. The auger screw and shaft ar

A tapered auger shredder which includes a frame defining a grinding chamber with a front wall having a centrally-located discharge opening and a rear wall mounting a powered auger screw having a flighted shaft extending through the chamber and into the discharge opening. The auger screw and shaft are tapered and the screw flight is correspondingly tapered so that the volume pumped by the screw along the length of the shaft remains substantially constant, or the rate of compression is substantially reduced, to provide consistent flow of material to the discharge opening and reduce build up of material against the front wall. In a preferred embodiment, the screw includes a torque transmission collar which extends between a disc-shaped base plate supporting the screw and the first flight turn and acts to prevent jamming of material between the base plate and underside of the first turn as well as transmit rotational torque from the disc to the shaft and flight.

대표청구항 ▼

[ What is claimed is:] [1.] An auger shredder comprising:a frame defining a grinding chamber having an open top for receiving material to be shredded, front and rear walls joined by downwardly-converging side walls, said front wall having a substantially centrally-located discharge opening, and a tr

[ What is claimed is:] [1.] An auger shredder comprising:a frame defining a grinding chamber having an open top for receiving material to be shredded, front and rear walls joined by downwardly-converging side walls, said front wall having a substantially centrally-located discharge opening, and a trough positioned beneath said side walls and inclined upwardly to said discharge opening;auger screw means for shredding material in said chamber and pumping said material through said discharge opening, said screw means having a shaft rotatably mounted ion said rear wall and extending through said grinding chamber to said discharge opening, said shaft tapering in diameter along its length from said rear wall to said front wall, and a helical flight extending along said shaft, said flight having an outer periphery which tapers in diameter from said rear wall to said front wall, said flight taper corresponding to said shaft taper such that a first series of volumes, each defined by a segment of said shaft and a turn of said flight adjacent to said segment, outwardly to a periphery of said flight turn, are substantially equal to each other along a substantial portion of said length of said shaft in said grinding chamber; andmotor means for rotating said auger screw means, whereby compression of material by said screw means along said trough in said grinding chamber is substantially reduced to provide consistent flow of material to said discharge opening and reduce build-up of material at said discharge opening.