Liquid purification or separation – Filter – Movable medium
Patent
1985-03-18
1986-09-30
Fisher, Richard V.
Liquid purification or separation
Filter
Movable medium
B01D 3304
Patent
active
046145834
ABSTRACT:
A horizontal belt filter with incremental belt advance in which an endless belt is trained about a plurality of idler rollers to pass through an upper run which includes a filter section and a lower return run. The belt passes over only idler rollers. To index the belt for incremental advance through the filter section, a pair of idler rollers on a common shiftable frame are rapidly simultaneously shifted while the belt in the return run is braked against movement. The braking is accomplished by a pinch bar that presses against an idler roller with the belt between the bar and roller. After shifting, the belt is reset by slow retraction of the shiftable frame. All shifting of the frame is done by hydraulic rams. To assist in incremental belt advance, an air cushion may be introduced under the belt in the filter section. For feed distribution, and stage separation, inflatable dams are provided above the belt in the filtering section.
REFERENCES:
patent: 3760945 (1973-09-01), Davis
patent: 3870641 (1975-03-01), Pierson
patent: 4127487 (1978-11-01), Havalda
patent: 4153550 (1979-05-01), Lautrette
patent: 4377480 (1983-03-01), Pierson
patent: 4430231 (1984-02-01), Bratten
patent: 4446023 (1984-05-01), Pierson
patent: 4472279 (1984-09-01), Pierson
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Bulletin HuVac, Filterrange, Hubert Sneek ESMIL, no publication date given; consists of cover and several pages with handwritten numbers 1-7 thereon; believed published in mid 1981; text, photos and sketch on page 2 are most pertinent.
Johnson-Progress ADPEC Horizontal Vacuum Belt Filter consisting of cover and two pages; date of pubication not known.
Evans Linda S.
Finch Robert R.
Fisher Richard V.
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