Liquid purification or separation – Filter – Movable medium
Patent
1987-06-24
1988-10-04
Hart, Charles
Liquid purification or separation
Filter
Movable medium
210400, 210456, 100151, 100152, B01D 3300
Patent
active
047754729
ABSTRACT:
A belt filter press-type apparatus receives a partially dewatered "cake" comprising a liquid/solid suspension which has been processed by conventional liquid/solid separation equipment; the apparatus removing additional moisture from the cake. The apparatus comprises two liquid-permeable belts which are driven by belt driving means along respective predetermined paths. The belts, however, share respective portions of their paths substantially in common. The cake is sandwiched between the two belts and driven through the common portions of the respective belt paths. The combination of the belts with the the cake interposed therebetween meanders around a plurality of rollers which create tension and pressure on the belt and the cake, thereby driving part of the liquid content out of the trapped suspension. The rollers are arranged at an angle with respect to the horizon so that the top surface of the upper belts is not horizontal thereby allowing the liquid expressed through the top belt to drain off before it is reabsorbed.
REFERENCES:
patent: 1172783 (1916-02-01), French
patent: 1486360 (1924-03-01), Brown
patent: 3227281 (1966-01-01), Peterson et al.
patent: 3430583 (1969-03-01), Pool et al.
patent: 3517819 (1970-06-01), Helland
patent: 4159947 (1979-07-01), Brooks et al.
Hart Charles
Inlay Inc.
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