Gas separation – With nonliquid cleaning means for separating media – Cohesive filter media cleaning
Patent
1988-12-09
1990-10-09
Nozick, Bernard
Gas separation
With nonliquid cleaning means for separating media
Cohesive filter media cleaning
55497, 55502, 55357, B01D 4604
Patent
active
049617621
ABSTRACT:
A backflushed panel type filtration system is positionable over the flow discharge opening in a dividing wall separating the material collection and clean air flow chamber portion of an air throughflow type particulate collecting device. The filtration system has a filter media section captively retained within an inner peripheral face frame which, in turn, is nested within an outer support frame, this dual frame structure being provided with upstream and downstream peripheral face sealing gaskets. An upstream side flange portion of the outer frame is insertable into the discharge opening and serves to automatically align the filter structure therewith. An internally partitioned clean air flow shroud is removably positionable atop the filter structure and has flange portions which engage the downstream seal gasket and cooperate with side wall portions of the outer filter frame to automatically align the shroud with the underlying filter structure. Front and rear clamping structures are operable to clamp the shroud downwardly against the filter to compress the sealing gaskets and form upstream and downstream peripheral face seals around the filter structure. Cooperating wall portions on the outer filter frame and the shroud prevent clamping over-compression of the inner filter frame. A series of multi-jet type flushing heads are positioned behind the open rear end of the shroud and are operable, via quick-opening valves and a stepper motor, to periodically flow bursts of pressurized air through the shroud and across the filter media to dislodge particulate matter adhering to the upstream face thereof.
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patent: 4331459 (1982-05-01), Copley
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patent: 4548627 (1985-10-01), Landy
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