SCREW-TYPE FINE POWDER RAW MATERIAL FEEDING DEVICE AND METHOD
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United States of America Patent
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Issued Date -
Jan 1, 2015
app pub date -
Apr 26, 2013
filing date -
Apr 27, 2012
priority date (Note) -
Abandoned
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Abstract
A screw-type fine powder raw material feeding device includes a screen (5) wound on the outer periphery of a tubular receiving member (21) and a plurality of annular metal fixtures (23) for bringing the screen (5) into close contact with the tubular receiving member (21) side. A gap (D) between the screen (5) and an outer diameter of a screw (2) is set to 1 mm to 10 mm, only a gas separated from the fine powder raw material is discharged to the outside from the gas vent ports (20), and the fine powder raw material is fed into a cylinder (1a), with no fine powder raw material being leaked to the outside from the screen (5). The invention also relates to a method of using the device.
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