Gas separation – With separating media bypass or system gas pressure relief – Valved bypass means
Patent
1995-04-20
1997-06-03
Bushey, C. Scott
Gas separation
With separating media bypass or system gas pressure relief
Valved bypass means
55344, 553501, 55422, 366 75, 425203, B01D 4600
Patent
active
056349530
ABSTRACT:
The present invention provides a barrel venting system for use on an extruder. Gases that are generated during plasticizing are drawn by vacuum through a filter to remove plastic particles before the gas is exhausted to the atmosphere. To enable cleaning of the filter without interrupting extruder operation, a shuttle valve is provided to allow rapid switching of the gas flow to a second filter. The valve itself includes two disc shaped elements with ports that align in two positions to enable flow to either the first or second filter, as desired.
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Bushey C. Scott
Cincinnati Milacron Inc.
Friskney Stephen H.
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