Sifting apparatus
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United States of America Patent
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-
Feb 27, 1990
Grant Date -
N/A
app pub date -
Jul 26, 1988
filing date -
Jul 26, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improvement for centrifugal sifter units having an elongated sifting chamber having a central axis, a coaxial screen surface therein and a series of paddles mounted on a shaft driven for rotation about the central axis for urging siftable material through the screen surface to separate fines from overs, comprises a series of nozzles mounted on the shaft for rotation therewith. The nozzles are oriented to direct gas streams at the screen surface whereby agglutinating fines are dislodged from each other and are directed through the screen surface. A source of compressed gas is operatively connected to the nozzles. The gas streams may be ionized to further improve throughput.
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