Rotary drum filter grid extension and method

Details Rotary drum filter grid extension and method Rotary drum filter grid extension and method

1985-11-22

1987-05-05

Sever, Frank

Liquid purification or separation

Filter

Movable medium

29400M, 29428, 210541, 210542, B01D 3306

Patent

active

046630406

ABSTRACT:
This invention relates to a method and apparatus for constructing and refurbishing rotary drum filters having longitudinal compartments, or grids, along the deck periphery. The method includes installing novel single-leg grid extensions, angle grid extensions or T-shaped anti-rewetting grid extensions by means of pins seated in slots cut in the deck grids to a uniform depth with respect to the theoretical centerline of the filter drum. This procedure eliminates the requirement for conventional machining of the grid outer edges to a fixed radius with respect to the theoretical drum centerline. The apparatus includes spaced slots cut to a predetermined depth in the extending surfaces of the grids and pins extending through the elongated grid extensions for seating in the slots and precisely locating the grid extensions on the grids at a common radius extending from the theoretical centerline of the drum.

REFERENCES:
patent: 4419165 (1983-12-01), La Valley

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