Granular material coating apparatus
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United States of America Patent
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-
Jul 2, 1996
Grant Date -
N/A
app pub date -
Oct 7, 1994
filing date -
Oct 12, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The rotary drum has a cylindrical portion (tubular body portion) formed therein with vent holes. An annular duct is disposed at the outside of the cylindrical portion of the rotary drum in a manner to surround the cylindrical portion. This annular duct is provided with a gas supply duct and an exhaust duct. In the annular duct, partition walls define a vent path, in which the drying gas which has been supplied from the gas supply duct flows through an accumulated layer, and thereafter, flows to the exhaust duct. The direction of flow of the drying gas in the vent path is changed over by gas supply-exhaust changeover dampers.
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