Double screen belt press

Details Double screen belt press Double screen belt press

B - Operations, Transporting

30

B

100/7

B30B 9/24 (2006.01) B01D 33/04 (2006.01) B30B 15/30 (2006.01)

Patent

CA 2028019

A double screen belt press for dewatering mixtures of fibrous material suspensions has a wedge compression zone comprising rolls and perforated plates supporting generally upper and lower screen belts. For dewatering mixtures of fibrous material suspensions having a high dry solids content, at least one sealed material feed empties into the wedge compression zone with a high pressure. A generally vertically gravity tower with an outlet port is provided to feed material into the entrance of the wedge compression zone above the lower screen belt and in front of the front roll supporting the upper screen belt. The outlet port area of the material feed is sealed on at least the side facing the lower screen belt and optionally on the side facing the upper screen belt and on the other side of the material feed facing away from the wedge compression zone between the material feed and the lower screen belt.

Presse à bandes presseuses à double toile destinée à l'essorage de suspensions de matériau fibreux. La presse comprend une zone de compression triangulaire pourvue de rouleaux et de plaques perforées supportant des toiles métalliques essentiellement supérieure et inférieure. Au moins un dispositif d'alimentation étanche verse à haute pression des suspensions de matériau fibreux à haute teneur en matière sèche dans la zone de compression. Une tour gravitaire essentiellement verticale dotée d'un orifice de sortie alimente en matériau l'entrée de la zone de compression située au-dessus de la toile métallique inférieure et devant le rouleau avant, qui supporte la toile métallique supérieure. La zone de l'orifice de sortie du dispositif d'alimentation est étanche, au moins sur le côté face à la toile métallique inférieure et, facultativement, sur le côté face à la toile métallique supérieure et sur l'autre côté du dispositif d'alimentation situé du côté opposé à la zone de compression, entre le dispositif d'alimentation et la toile métallique inférieure.

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