Combined auger and air-type valve bag filling machine
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United States of America Patent
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-
Sep 23, 1986
Grant Date -
N/A
app pub date -
Apr 1, 1985
filing date -
Apr 1, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A valve bag filling apparatus that combines an auger-type feed and an air pressure-type feed in a unitary filling system for filling valve bags with flowable particulate material at higher speed and with greater accuracy. A concentric tube configuration is used to deliver such material at high speed into the bag during a major portion of the filling cycle with both feed systems acting simultaneously. A novel cutoff tube closes an annular air feed passage during the final portion of the filling cycle when the auger feed portion of the system completes the bag filling operation at a highly accurate and readily controlled low feed rate. Air purge jets clear the air passage of remaining material during the final portion of the filling cycle. A unique fluidizing section of the apparatus aerates the product and feeds it into both the auger and air passage during high speed filling.
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