B - Operations – Transporting – 02 – C
Patent
B - Operations, Transporting
02
C
241/122
B02C 18/14 (2006.01)
Patent
CA 1041468
ABSTRACT A portable compost grinder including a generally semi- cylindrical housing having circumferentially spaced inlet and discharge openings, opposite axial air inlet openings and an axially mounted horizontally arranged driven shaft. A pair of closely spaced radially extending, convex-concave cutting blades is mounted on said driven shaft and a pair of fan assemblies also is mounted on said shaft on opposite sides of said pair of cutting blades. The fan blades or vanes of one of said assemblies have an opposite pitch relative to the vanes of the other assembly so that on rotation of the shaft, air is drawn into the housing in both axial directions. Composting material is fed into the housing through the inlet opening in a radial direction relative to the shaft. Rotation of the shaft forces the cutting blades into the composting material to drive the material into engagement with inwardly extending cutting teeth arranged spaced apart as a part of a grating assembly removably located interior of the housing adjacent the mouth of the discharge opening. Air introduced by the fan assemblies is used to drive the finely comminuted material through the grating to and through the discharge opening. The cutting blades extend radially longer than the vanes of the fan assemblies. In this manner the speed of rotation of the blade tips is increased to generate an area of reduced pressure or suction at the peripheral area traversed by the tips. The thus generated suction not only aids in driving the comminuted material through the grating but serves to carry large, partially comminuted material upwards from the grating to impinge upon the rear wall of the housing and effect continued passage through the grinder until satisfactory comminution has been achieved. A safety disconnect device, an improved feed system, many constructional features enabling easy disassembly and reassembly, as well as other advantageous features are described.
205393
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