Liquid purification or separation – Flow – fluid pressure or material level – responsive – Maintaining stream pressure or flow
Patent
1975-01-22
1976-06-29
Granger, Theodore A.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Maintaining stream pressure or flow
100117, 210415, B01D 2104, B30B 912, B30B 1500
Patent
active
039666077
ABSTRACT:
Apparatus for separating a viscous slurry into solid and liquid fractions comprising a cylindrical screen and an axle extending longitudinally through said cylindrical screen with a plurality of scraper knives mounted on the axle in the upper portion of the cylindrical screen for scraping clean the interior surface of the screen. The viscous slurry is fed under pressure into the volume within the screen occupied by the scraper knives. A force is applied to a discharge valve at the bottom of the screen to provide a back pressure so that the liquid fraction can be forced through the holes of the screen while the scraper knives clean the screen. An auger flighting secured to the bottom portion of the axle compresses the solid fraction toward the discharge valve. The liquid fraction is collected externally of the screen while the solid fraction drops past the discharge valve.
The separator may be used in combination with washing apparatus comprising a horizontal trough terminating in a screw press. The trough is positioned immediately beneath the separator and includes conveyor means for moving the solid fraction as it falls from the separator beneath a set of nozzles through which fresh water is emitted to cleanse the solids prior to pressing.
REFERENCES:
patent: 2024463 (1935-12-01), Malanowski
patent: 3003412 (1961-10-01), Vincent
patent: 3035511 (1962-05-01), Hayes
patent: 3111082 (1963-11-01), Larsson et al.
patent: 3126818 (1964-03-01), Koelsch
patent: 3499528 (1970-03-01), Salomon
patent: 3585924 (1971-06-01), Nolan
patent: 3771290 (1973-11-01), Stethem
patent: 3877365 (1975-04-01), Berggren
Gaynor William Wayne
Voigt Gene Ray
Ceres Ecology Corporation
Granger Theodore A.
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