Apparatus for comminuting waste materials having screw delivery features
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United States of America Patent
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-
Jan 19, 1999
Grant Date -
N/A
app pub date -
Jan 8, 1997
filing date -
Jan 8, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
An improved apparatus for comminuting solid waste material into small pieces having a size less than a predetermined size is disclosed. A set of overlapping scissor rolls are rotatably mounted within an enclosure for shearing the waste material into subdivided pieces when the material passes between the scissor rolls. An entrance for receiving the material has: (1) a shear intake manifold communicating with the entrance for receiving the solid waste material upstream of the scissor rolls and directing the waste material to the scissor rolls, and (2) a shear outtake manifold downstream of the scissor rolls for receiving the subdivided waste material pieces from the scissor rolls after the material has passed between the scissor rolls. A feed roll is carried by the frame for feeding the waste material into the shear intake manifold at a desired line speed and directing the waste material to the scissor rolls. A separator screen separates large and small subdivided pieces. A pneumatic conveyor is used to deliver the subdivided pieces within and from the apparatus. Another version includes a screw conveyor operating as an Archimedes screw for delivering the subdivided pieces of comminuted material.
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