Ronald W Weis

US Patent:

60902981, Jul 18, 2000

Filed:

Dec 10, 1997

Appl. No.:

8/988149

Inventors:

Ronald J. Weis - Davis IL

Assignee:

Aqua-Aerobic Systems, Inc. - Rockford IL

International Classification:

B01D 3348

US Classification:

210780

Abstract:

A filter apparatus includes a tank having an inlet and an outlet, a filter frame disposed inside the tank between the inlet and outlet, and filter material supported by the filter frame. The filter material filters out suspended solids from liquid influent that is passed through the filter material as the liquid influent flows from the inlet to the outlet. The filter apparatus is provided a suction generating assembly having a positive displacement pump, and a suction member in fluid communication with the pump and positioned adjacent an inlet surface of the filter material. The suction generating assembly is operable to draw filtered liquid in a reverse direction through the filter material to remove filtered solids therefrom. The filter apparatus also utilizes spray nozzles for directing a liquid stream of a cleaning solution at high velocity to the filter material thereby washing the filter material. The suction member is positioned relative to the filter material such that substantially all of the spent cleaning solution which results from operation of the spray nozzles are removed from the filter material by the suction generating assembly.

US Patent:

53743601, Dec 20, 1994

Filed:

Dec 14, 1993

Appl. No.:

8/165959

Inventors:

Ronald J. Weis - South Beloit IL

Assignee:

Aqua-Aerobic Systems, Inc. - Rockford IL

International Classification:

B01D 2968

US Classification:

210780

Abstract:

A method and apparatus for cleaning a filter apparatus of the type having an atmospherically vented tank, a rotatable filter frame in the tank having filter material thereon providing one or more filter effluent compartments on the filter frame. An influent line supplies liquid containing suspended solids to the tank and a filtered effluent outlet communicates with the filter effluent compartment, and a spray wash device including spray nozzles is operable during a wash cycle to direct high pressure liquid spray at a side of the filter material on the filter frame in a spray zone. An air tight hood is mounted inside the tank and extends above the upper periphery of the filter frame to an open lower end below the spray zone. The hood is vented to atmosphere during a filter time to allow liquid influent in the tank to flow into the hood and immerse the filter frame, and air is supplied to the hood during the wash cycle at a pressure sufficient to pneumatically depress the liquid in the hood to a level below the spray zone.