Bar screening apparatus

Details Bar screening apparatus Bar screening apparatus

1986-09-18

1988-12-20

Fisher, Richard V.

Liquid purification or separation

Structural installation

Flume stream type

209385, 210162, 210413, B01D 3516

Patent

active

047923946

ABSTRACT:
A bar screening apparatus for the efficient screening and removal of solid materials from a liquid flow stream. The bar screen includes a plurality of bars that are disposed in substantially parallel adjacent relation to each other and each have an upstream face disposed at an acute angle to the direction of flow of the liquid flow stream for enhancing screening of even relatively thin solid waste materials without significantly impeding the flow stream. The bars of the screen preferably are formed with a plurality of flow apertures in their active region which further minimizes head losses in the system and enhances screening of solid materials. A power operated two-directional rake is provided for more efficiently removing solid material that accumulate on the bar screen. Projections on the rake engage the bar screen only in one direction of the rake's movement and means are provided for forcing a close-fitting relationship between the rake projections and the screen bars during the raking operation.

REFERENCES:
patent: 2033653 (1936-03-01), Schlapak et al.
patent: 3209914 (1965-10-01), Nordell et al.
patent: 4265750 (1981-05-01), Meunier
patent: 4289619 (1981-09-01), Sampson
patent: 4472273 (1984-09-01), Hagihara

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