초록 ▼

A filter plate which is longitudinally partitioned between its inlet and outlet ends, and features liquid feed and collection troughs at the respective ends. Such plates may be associated in opposed, relatively inverted pairs to form enclosed flow channels characterized by fluid flow rates which are

A filter plate which is longitudinally partitioned between its inlet and outlet ends, and features liquid feed and collection troughs at the respective ends. Such plates may be associated in opposed, relatively inverted pairs to form enclosed flow channels characterized by fluid flow rates which are substantially uniform across the full transverse extent of the flow path and which facilitate the utilization of the full areal extent of the filter media employed therewith. Also described is a unitary filter element which may be usefully employed in the filter. The filter of the invention may be highly efficiently employed for dewatering of aqueous biomass suspensions, desalting of proteins, removal of secreted metabolites from cellular suspensions, and the like.

대표청구항 ▼

A filter plate having a generally rectangular and generally planar shape with a substantially flat bottom surface, a top surface with a first upwardly extending wall circumscribingly bounding a flow channel of generally rectangular shape, and a second upwardly extending wall interior to and of lesse

A filter plate having a generally rectangular and generally planar shape with a substantially flat bottom surface, a top surface with a first upwardly extending wall circumscribingly bounding a flow channel of generally rectangular shape, and a second upwardly extending wall interior to and of lesser height than the first bounding wall, the second wall being in spaced relation to the first wall along diagonally opposed L-shaped peripheral sections of the flow channel, said first and second walls defining an L-shaped channel therebetween in said diagonally opposed L-shaped peripheral sections, each L-shaped channel comprising a leg extending transversely across the flow channel for a major portion of the width thereof, and a leg extending longitudinally for a portion of the length of the flow channel and each longitudinal leg communicating at its extremity with an opening extending through the plate, ridges extending between the first and second bounding walls along peripheral portions of the flow channel not comprising said L-shaped peripheral sections; a liquid inlet port at a first side of the flow channel and a liquid outlet port at a second side of the flow channel opposite the first side thereof, the liquid inlet port being joined in liquid flow communication with a liquid flow feed trough located interior of said second wall and extending transversely across the first side of the flow channel, and the liquid outlet port being joined in liquid flow communication with a liquid collection trough located interior of said second wall and extending transversely across the second side of the flow channel, with a plurality of spaced-apart partitions extending upwardly from the floor of the flow channel between the liquid feed trough and the liquid collection trough, the partitions being of substantially the same height as the second bounding wall and substantially parallel to one another to define a series of sub-channels between the partitions, extending longitudinally between the liquid feed trough and the liquid collection trough; with circumferentially spaced-apart openings about the periphery of the filter plate for mating with rod elements to form a stacked plate filter comprising a multiplicity of such filter plates, wherein the openings are of at least two different shapes or sizes.