Solid material comminution or disintegration – Apparatus – With separation or classification of material
Patent
1977-09-19
1979-01-16
Custer, Jr., Granville Y.
Solid material comminution or disintegration
Apparatus
With separation or classification of material
241 80, 2411012, 241236, 241DIG31, B02C 2312
Patent
active
041345568
ABSTRACT:
Multiple cutting discs are fixed in spaced-apart positions on each of two side-by-side counterrotating shafts so that peripheral portions of the discs on each shaft extend into the spaces between discs on the opposite shaft. Each disc has a smooth cylindrical peripheral surface which meets opposed sidewalls at sharp continuous cutting edges. The clearance between adjacent discs on opposed shafts is small so that their cutting edges coact to shear material fed into the bight between opposed counterrotating discs in their feed-through direction. Removable infeed teeth project from the peripheral surface of each disc at circumferentially spaced positions to help feed material into the bight between opposed discs. Material shredded by the discs falls onto a slowly rotating screening drum encircling the disc assembly. The smallest shredded pieces pass through such drum onto a discharge conveyor. Larger pieces are carried by inwardly extending rake-like carriers on the drum upwardly back to the infeed side of the cutting discs for reshredding into smaller pieces. A powered disc-sharpening grinder associated with the disc assembly simultaneously grinds the peripheral surfaces of all cutting discs on a shaft, after removal of their feed teeth. A lugged infeed conveyor feeds tires one at a time from a tire stack upwardly to the infeed side of the cutting disc assembly. The feeding of a tire into the disc assembly is alternated with the feeding of shredded material for reshredding so as not to overload the disc assembly.
REFERENCES:
patent: 1876150 (1932-09-01), Pearson
patent: 2345937 (1944-04-01), Joa
patent: 2628701 (1953-02-01), Schrage
patent: 3021081 (1962-02-01), Leader
patent: 3837490 (1974-09-01), Driebel et al.
patent: 3931935 (1976-01-01), Holman
patent: 4052013 (1977-10-01), Ehrlich et al.
Ehrlich John T.
Ehrlich Stanley V.
Custer, Jr. Granville Y.
Georgia-Pacific Corporation
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