B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
23/411
B01J 16/00 (2006.01) B01D 33/00 (2006.01) B01D 33/04 (2006.01) D21C 9/06 (2006.01)
Patent
CA 1282226
A b s t r a c t The invention relates to an apparatus or device for the treatment of a material, in particular a web of material or pulp, made to pass between at least two endless permeable belts, for instance screen belts or the like conveying means, preferably for the displacement washing or a filter cake or for washing fibrous matter, the material being passed between the belts along at least two containers serving for the supply of a treatment medium, for instance a washing fluid, a bleaching agent or other chemicals. It is the object of the invention to provide a compact apparatus of this type at simultaneous good effectiveness. This object is achieved according to the invention by passing the belts with the material lodged therebetween, in particular for a countercurrent treatment, preferably for a counter- current displacement washing, first through one or several zones(s) in which pressurized treatment fluid is fed from the top to the belts and the material form pressurized containers with one or more wall portion(s), in particular bottom(s), provided with openings and contacting the upper belt. in which zones there is essentially normal air pressure or atmospheric pressure or environmental pressure underneath the lower belt and subsequently through straining zones formed by pressing reversing rollers, compression rollers, press nips or the like arranged spacially from the pressurized containers and supported separately from these.
547139
Resch Franz
Sbaschnigg Johann
Bkp Gp
Maschinenfabrik Andritz Actiengesellschaft
Resch Franz
Sbaschnigg Johann
LandOfFree
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