John M L Jacob

US Patent:

51678039, Dec 1, 1992

Filed:

Oct 10, 1990

Appl. No.:

7/594937

Inventors:

Kenneth G. Newton - Sugar Land TX
Mark S. Butler - Spring TX
John C. Jacob - New Caney TX

Assignee:

Envirofab, Incorporated - Spring TX

International Classification:

B01D 2964

US Classification:

210141

Abstract:

A mechanically cleaned bar screen or bar rack is disclosed for removing debris from water and wastewater treatment facilities which comprises a frame with housings supported thereon and a bar rack and dead plate. The apparatus is supported on the ledge of the sluice of a water or wastewater treatment facility tilted backward at an angle of about 0. degree. -30. degree. with the bar rack submerged in the flowing stream of water. A carriage carries a pivotally mounted rake assembly with a rake engaging the bar rack. The carriage is reciprocated along a guide rail by motor operated lead screws which extend through rollnut assemblies supporting the carriage. At the top of the traverse of the carriage, the rake is swept by a wiper to remove debris to discharge down a chute for pick up. The motorized drive system is totally enclosed. The motor and gear boxes are stationary and do not travel with the rake carriage.