Pressure filters

Details Pressure filters Pressure filters

1981-03-10

1982-12-28

Adee, John

Liquid purification or separation

Filter

With movable means to compress medium

100211, B01D 2942

Patent

active

043660550

ABSTRACT:
A tube pressure filter comprises (a) a pair of generally coaxial inner and outer tubular assemblies, which define between them a chamber of annular cross-section, (b) an impermeable elastic sleeve which divides said chamber into non-intercommunicating inner and outer compartments, (c) a filter element, (d) a slurry inlet extending annularly around one of the tubular assemblies for feeding a slurry to said inner compartment, (e) a hydraulic fluid inlet/outlet for feeding hydraulic fluid to and withdrawing hydraulic fluid from the outer compartment, (f) filtrate discharge means for the discharge of filtrate which has passed through the filter element and through apertures in the inner tubular assembly into the chamber, and (g) means for effecting relative movement of said tubular assemblies from one to another of three operating positions of said tubular assemblies. In the first operating position of said tubular assemblies the slurry inlet is in communication with said inner compartment but the inner compartment is otherwise closed whereby a slurry to be pressure filtered can be fed to the inner compartment via said slurry inlet. In the second operating position of said tubular assemblies said inner compartment is closed and said slurry inlet cooperates with means formed by or associated with the other one of said pair of tubular assemblies to isolate said slurry inlet from said inner compartment whereby said slurry to be pressure filtered can be dewatered. In the third operating position of the tube pressure filter said inner compartment is open so that particulate solid can be discharged from the inner compartment.

REFERENCES:
patent: 3276594 (1966-10-01), Gwilliam
patent: 3712209 (1973-01-01), Gwilliam
patent: 3713382 (1973-01-01), Gwilliam
patent: 3753499 (1973-08-01), Gwilliam
patent: 3900403 (1975-08-01), Randle
patent: 4061575 (1977-12-01), Randle
patent: 4214991 (1980-07-01), Broad

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