Weir cleaning apparatus and method

Liquid purification or separation – Processes – Separating

Patent

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Details

210528, 210530, 210541, 152465, B01D 2106

Patent

active

057208905

ABSTRACT:
An apparatus for cleaning algae and debris from the inner and outer surfaces of a weir and the top surface and outer side wall of a spillway in a water treatment tank. A main frame is mounted on the revolving skimmer arm of the tank. A pair of brushes pivotally mounted to a lower end of a support arm have bristles facing in inwardly opposed relation to engage each side of the weir for cleaning both side surfaces of the weir. The support arm is connected to the main frame by a universal joint to pivot in a vertical plane and move in and out relative to the center of rotation to compensate for out-of-round weir surfaces. The brushes are spring biased downwardly in a vertical position and pivotally mounted to the support arm to allow pivotal movement when their lower ends engage a bracket or obstruction so that they pass thereover and return to the vertical position. A third brush connected with the pair of brushes engages and cleans the upper surface of the spillway adjacent the weir. A fourth brush pivotally mounted in a vertical position to the lower end of a second support arm engages and cleans the outer surface of the spillway. A tension spring connects the main frame and second support arm and allows the fourth brush to move in and out relative to the center of rotation to compensate for out-of-round spillway surfaces.

REFERENCES:
patent: 2238024 (1941-04-01), Linch
patent: 2261487 (1941-11-01), Scott et al.
patent: 4043920 (1977-08-01), Wooh
patent: 4830748 (1989-05-01), Hall
patent: 4876010 (1989-10-01), Riddle
patent: 4978447 (1990-12-01), Hall

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