Abstract: A filter media supply and extraction apparatus for a plate type liquid filtering device having a stack of separable filter plates. The extraction mechanism comprises a driven roller for each sheet of filter media in combination with an adjacent, movable bar having a series of spaced apart pinch wheels mounted thereon for penetrating accumulated cake and filtered dirt on the media when an actuator moves them against the roller as the media is being advanced. The driven rollers are mounted on separate bearing plates which are movable in response to sensor signals to steer the moving filter media and maintain its alignment with the filter plates. The supply section of the apparatus comprises a series of supports for supply rolls of filter media provided with adjustable centering means to help maintain proper alignment of the filter media between filter plates.

Abstract: Disclosed is an improved filter of the type comprised of a series of stacked plate assemblies forming filter chambers adjacent to sheets of filter media between plate assemblies. The plate assemblies are constructed so that liquid can be rapidly removed from the filter chambers to prevent spillage when it becomes necessary to separate the plate assemblies and replace the filter media. Each plate assembly has an internal baffle system along one side having inlets for liquid to be filtered. The baffle system for each plate assembly deflects liquid coming into the chamber so as to prevent it from disturbing the filter cake, and it also allows substantially all of the liquid to be blown out of the chamber during a reverse flow "blow-down" procedure prior to separation of the plate assemblies.

Abstract: A filtering apparatus comprises a plurality of plate and frame sections arranged adjacent each other in alternating sequence with a layer of filter media retained between each pair. Both plate and frame sections have peripheral members with openings which provide access to the inner space formed within the members. Peripheral conduit means on each frame section serve to distribute the liquid to be filtered in a way that does not disturb the filter media or any collected dirt on it as the liquid flows through the filter media and into the inner space of each plate member where it accumulates and passed out through an outlet conduit.