Filter apparatus

Details Filter apparatus Filter apparatus

B - Operations, Transporting

01

D

182/52

B01D 29/09 (2006.01)

Patent

CA 1096315

ABSTRACT OF THE DISCLOSURE A filter apparatus wherein filter media is submerged in liquid being filtered and suction is employed under the media to increase the flow through it. The filter media in elongated strip form is supported for move- ment in one direction on an inclined endless pervious conveyor comprised of rigid plate member fixed to a pair of drive chains. A receiving tank for dirty liquid is above the conveyor and media with a lower tank for clean liquid below the conveyor with the sides and ends of the lower tank being constantly sealed in order to maintain reduced pressure therein to enhance flow through the media. Filtered liquid at a somewhat higher pressure is supplied at the sides of the conveyor and at end walls of the receiving tank to prevent any migration of dirty liquid into the lower tank at the periphery of the lower tank. Advancement of the filter media is controlled automatic- ally in response to variation in the pressure differential on opposite sides of the media which varies in proportion to the dirt load of the media.

298955

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