Solid material comminution or disintegration – Apparatus – With separation or classification of material
Patent
1988-11-28
1991-11-26
Rosenbaum, Mark
Solid material comminution or disintegration
Apparatus
With separation or classification of material
209262, 209300, 241 893, 241247, 2412601, B02C 1922, B02C 2316
Patent
active
RE0337528
ABSTRACT:
Apparatus for the separation of mixtures of materials of different consistencies, such as meat and bone, or sewage containing solid material, comprises a positive displacement pump feeding the pressurized mixture to a separator screen which can be separate from the pump or an integral part of its structure. The pump comprises a rotary vaned pump with radially-moving vanes of fixed length operating with both their ends always in sealing engagement with the wall of an internal cam also constituting a wall of the pump chamber. The vanes are provided with cutting edges able to shear material such as bone that enters the pump, so that the pump is not jammed thereby. The pump is required to provide pressurization to the mixture of at least 70 Kg/sq. cm. (1000 p.s.i.), usually up to about 210 kg/sq. cm. (3000 p.s.i.) to obtain adequate separation; the separator screen and outlet must be able to provide for corresponding back pressures in the pressurized mixture again to obtain adequate separation.
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