Solid material comminution or disintegration – Apparatus – With separation or classification of material
Patent
1992-02-03
1993-01-26
Rosenbaum, Mark
Solid material comminution or disintegration
Apparatus
With separation or classification of material
2411017, 2411864, 2411891, B02C 13286
Patent
active
051816636
ABSTRACT:
A tub grinder is disclosed in which material which is already sufficiently small in size, primarily being abrasive aggregate or earthen material, may be discharged from the receptacle to bypass the comminution apparatus and thus substantially reduce wear thereto. A portion of the cylindrical wall of the receptacle is provided with classifying openings, for example by providing a screened opening as a band around the receptacle. The classifying openings permit material which is already smaller than the size of the openings to fall therethrough, thereby bypassing the comminution apparatus. Preferably, a conveyor is positioned beneath the receptacle, to catch and discharge the material which falls through the screen or other classifying openings to a pile located away from the receptacle. Sidewalls positioned on either side of the receptacle stop any material which is flung out to the side, and redirect it down onto the conveyer. The apparatus may be advantageously mounted on a trailer, for towing from site to site. In such an arrangement, it is advantageous to provide an integrated, transportable system, in which the receptacle is moveable between an operating position and a transportation position.
REFERENCES:
patent: 209838 (1878-11-01), Salmon et al.
patent: 1156394 (1915-10-01), Crowe
patent: 4852815 (1989-08-01), Gianotti
patent: 4934615 (1990-06-01), Osborne
patent: 4997135 (1991-03-01), Zehr
Dorscht John P.
Hogan Patrick J.
Armstrong R. Craig
Husar John M.
Rosenbaum Mark
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