Belt filter

Liquid purification or separation – Flow – fluid pressure or material level – responsive – Maintaining stream pressure or flow

Patent

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Details

210144, 210387, B01D 2902

Patent

active

044811080

ABSTRACT:
A belt type filter is disclosed in which a length of disposable filter sheet material is dispensed from a roll to extend through the interior space of a tank, over a pervious section of the tank bottom communicating with a collection chamber receiving filtered liquid from the tank after passing through the filter belt.
The filter belt side edges extend within recesses along either side of its path through the tank interior space with an inflatable seal extending along each recess to secure and seal the edges thereof at all points below the level of liquid in the tank. The filter belt is periodically advanced to dispose a fresh section of filter over the collection chamber either manually or under automatic control sensing the vacuum generated by a circulating pump connected to the collection chamber. The advancing of the filter belt is by an arrangement including clamping cylinders and a rotary indexing drive each associated with a rotatably mounted roller receiving the contaminated filter belt material as it passes out of the tank.

REFERENCES:
patent: 3706378 (1972-12-01), Markwick
patent: 3899426 (1975-08-01), Hirs
patent: 3982499 (1976-09-01), Frankl
patent: 4159948 (1979-07-01), Crowe
patent: 4377479 (1983-03-01), Pierson

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