Solid material comminution or disintegration – Apparatus – Cooperating comminuting surfaces
Patent
1989-06-07
1990-08-21
Rosenbaum, Mark
Solid material comminution or disintegration
Apparatus
Cooperating comminuting surfaces
2412601, 2412611, B02C 1922
Patent
active
049499165
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD OF THE INVENTION
The invention relates to a device for disintegrating material, such as waste, comprising a rotatable drum which is supported by a stand and has an inlet opening and one or more outlet openings, and a counterbody disposed inside the drum, one or more helical or helically arranged members being provided on the inside of the drum and adapted to convey, during rotation of the drum, the material received in the drum in a downward direction towards a gap between the outside of the counterbody and the inside of the drum.
PRIOR ART TECHNIQUE
DE patent specification No. 273,909 discloses a device for disintegrating elongate metal chips, comprising a conical drum which is provided with helical internal ridges and which can be rotatable, and a body disposed inside the drum and being in the form of a mandrel onto which the chips can be wound and subsequently conveyed by the helical ridges down into a stamping mill in which the actual disintegration of the chips into fine material is effected. Moreover, DE Offenlegungsschrift No. 2,302,859 discloses a device for disintegrating chips, comprising a rotatable drum and a body disposed therein and being in the form of a stationary upright on which there are arranged a number of blades adapted to cooperate with a plurality of sheet metal members which are helically arranged on the inside of the drum and by which the chips are conveyed downwardly towards a gap extending between the outside of the upright and the inside of the drum and provided with knives for finally disintegrating the chips. What these prior art disintegrating devices have in common is that they are suited for working fine and easily disintegratable material, such as chips, but not coarser material, for example the highly varying types of household waste, since large objects cannot be effectively seized and worked between the screw members on the inside of the drum and the centrally positioned counter body.
BRIEF DESCRIPTION OF THE INVENTIVE IDEA
It is the object of the present invention to eliminate the shortcomings of known disintegrating devices of the type mentioned by way of introduction and to provide a device which is able to effectively work and disintegrate also coarse material. According to the invention, this is achieved in that at least an upper part of the counterbody tapers towards the inlet opening and is polygonal, e.g. hexagonal, in cross-section, and that there are arranged on the outside of said upper part one or more helical or inclined counterblades.
Since the counterbody is designed as stated above, coarse objects received in the drum are successively disintegrated as they pass downwards through the successively tapering space between the counterbody and the drum, more precisely by the interaction of the screw members on the inside of the drum with the counterblades on the outside of the counterbody, and furthermore are subjected to a tumbling and disintegrating or crushing action by the cross-sectionally polygonal shape of the body.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
In the drawings:
FIG. 1 is a schematic vertical section of a first embodiment of the invention,
FIG. 2 is a top view of the device in FIG. 1, and
FIG. 3 is a schematic vertical section of an alternative embodiment of the invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION
In FIGS. 1 and 2, a rotatable drum generally designated 1 is supported by a stand which in its entirety is designated 3. The drum 1 is mounted on the stand by means of a bearing 2. The drum is rotated by means of a driving motor 7 connected to the drum via a transmission having one or more V-belts 4 running between pulleys 5 and 6 which are mounted on the drum 1 and on the output shaft of the motor 7, respectively. The drum 1 comprises a cylindrical upper portion 8 and a lower portion 9 which in this case is conical. At the top of the cylindrical portion 8 of the drum, there is arranged a conically tapering feeding hopper 10 which forms an inlet opening of the drum. Mounted in
REFERENCES:
patent: 934694 (1909-09-01), Pratt
patent: 1803230 (1931-04-01), Bing
patent: 2902227 (1959-09-01), Higer
patent: 3713596 (1973-01-01), Hoffmann
patent: 4767069 (1988-08-01), Kim
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