Abstract: In the method and apparatus for filtering industrial processing liquids including feeding unfiltered liquids into a tank, guidably movably supporting and immersing portions of a continuous conveyor screen within the tank, positioning a filter media upon and along the screen with the filter media providing a loop within the tank, a clean liquid reservoir within the loop and an unfiltered liquid reservoir upon its exterior, providing an open top vacuum chamber within the clean liquid reservoir with the conveyor screen sealed over, along and covering the vacuum chamber, and positioning a power-operated tractor chain sludge elevator upon the tank opposite the open top of the vacuum chamber to longitudinally overlie and frictionally engage the outer surface of a return portion of the filter media effecting a positive upward lift movement of adjacent portions of the filter media with accumulated sludge thereon.

Abstract: An apparatus for filtering industrial process liquids is disclosed herein. The apparatus includes a tank, a continuous conveyor screen mounted within the tank, a partition spanning the tank walls and having an elongated aperture therethrough, and media sealing means upon and surrounding the aperture. One side of the conveyor screen overlies the tank and is guidably retained for sealing engagment with the sealing means, and the other side of the conveyor screen operatively engages a continuous sheet of filter media. The conveyor screen and filter media span the aperture providing upon the underside of the partition an enclosed filtered liquid reservoir and upon its other side an open unfiltered reservoir. An elongated open-top vacuum chamber is supported within the filtered liquid reservoir with its peripheral edge in sealing registry with the conveyor screen and having a first outlet for delivering filtered liquid to a process area.

Abstract: An apparatus for filtering industrial processing liquids is disclosed which includes a tank, a continuous conveyor screen positioned in and defining a loop in the tank, and a continuous filter media placed on an outer surface of the conveyor. The apparatus includes a power operated tractor chain sludge elevator guidably mounted within the tank extending along and frictionally engaging an outer surface return portion of the filter media for effecting a positive upward lift movement of adjacent portions of the filter media with accumulated sludge thereon. The apparatus may also include an apertured horizontal partition in the tank, the filter media sealed over the aperture defining a filtered liquid reservoir chamber positioned below the partition and an unfiltered liquid chamber above the partition, an opened-top vacuum chamber sealed to the filter media and immersed within the filtered liquid chamber positioned within the aperture so as to form a peripheral channel between the aperture and vacuum chamber.

Abstract: In an industrial filter apparatus having a tank with an inlet receiving contaminated effluent from an industrial washing device and a discharge outlet connected to the washing device for recirculating washing fluids, a continuous filter spanning the tank interposed between the inlet and outlet, a continuous drive connected to the filter, a motor connected to the drive and a pump delivering filtered fluids from the outlet to the washing device, an automatic filter media indexer comprises a sensing arm rotatably journaled upon the tank having a contactor engagable with the filter on its downstream side connected by a link and a pull rod to a normally open switch connected to a power source and to the motor. A switch actuator on the pull rod is in registry with the switch, and an adjustable spring normally biases the pull rod.