Air jet sieve device
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United States of America Patent
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-
Mar 25, 2014
Grant Date -
Oct 20, 2011
app pub date -
Apr 15, 2011
filing date -
Apr 17, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to an air jet sieve device having a housing, at least one sieve for insertion in the housing, a sieve deck and chamber located below the sieve, a slotted nozzle beneath the sieve deck, a drive for the slotted nozzle, an air inlet to the slotted nozzle, an air outlet through the housing and out of the chamber located beneath the sieve deck, and a control unit to control operation of the device. The invention also relates to a method that permits not only detection of the sieving progress during a sieving process but also provides a criterion to permit establishing the sieving time. This is achieved by equipping the sieving machine with a measuring sensor through which the particles in the air outlet flow are detected triboelectrically and which are correlated with the sieving progress to permit establishing the sieving time.
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