Bar screen and rake apparatus

Details Bar screen and rake apparatus Bar screen and rake apparatus

1989-12-14

1991-07-16

Jones, W. Gary

Liquid purification or separation

Structural installation

Flume stream type

210162, B01D 3516

Patent

active

050322630

ABSTRACT:
An apparatus for removing solids from a liquid flow stream comprising a bar screen for obstructing solids from the liquid flow stream and a reciprocal rake having a plurality of projection adapted for cooperation with the bars of the screen for removing solids accumulated thereon. The opposite sides of the rake are supported by guide rollers adapted for maintaining the rake projections in pre-determined relatively closely spaced relation to the bars during an upward raking stroke for effecting substantially complete removal of solids accumulated on the bars while preventing continued direct contact between the rake projections and the bars. The guide rollers in turn are supported on the rods of pivoting cylinders which are actuatable in response to downward return movement of the rake for pivoting the rake about its upper end and moving the projections thereof in a downwardly and outwardly arced path with respect to the screen for enabling the rake to engage solids and debris accumulated near the bottom of the screen.

REFERENCES:
patent: 2033653 (1936-03-01), Schlapak et al.
patent: 4265750 (1981-05-01), Meunier
patent: 4289619 (1981-09-01), Sampson
patent: 4472273 (1984-09-01), Hagihara
patent: 4725366 (1988-02-01), Dacus
patent: 4792394 (1988-12-01), Rudzinski
patent: 4857182 (1989-08-01), Jackson
patent: 4917796 (1990-04-01), Rudzinski

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