Presses – Methods – With separation from material of liquid expressed
Patent
1974-06-07
1977-04-26
Feldman, Peter
Presses
Methods
With separation from material of liquid expressed
100118, 100153, 210384, 210386, B30B 924
Patent
active
040194310
ABSTRACT:
There is disclosed a method of dewatering sludge such as residuals in sewage discharge processing installations. The method provides that cakes are formed of the sludge. These cakes have initially a high water content and are of inhomogenous, loose consistency. They are guided between filter bands through a preliminary filtering zone in which some of the water contained in the cakes is extracted by straining and pressure action applied thereto. The filter bands with the cakes therebetween are then successively guided over a first dewatering drum and a subsequent second dewatering drum. Pressure is applied to the filter band while being guided about the drums, thereby extracting further water from the cakes. Additionally, the cakes while traveling from the feed-in point toward and through pressure zones are deformed and also turned over thereby compacting the cakes as water is extracted therefrom. Finally, the cakes after being sufficiently dewatered and compressed are discharged.
REFERENCES:
patent: 2116168 (1938-05-01), Fish et al.
patent: 2910185 (1959-10-01), Wehner
patent: 3315370 (1967-04-01), Hikosaka
patent: 3459123 (1969-08-01), Begiebing
patent: 3743100 (1973-07-01), Bahr
patent: 3906853 (1975-09-01), Wohlfarter
Alb. Klein KG
Feldman Peter
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