Method for supplying material for pressing to a filter press

Details Method for supplying material for pressing to a filter press Method for supplying material for pressing to a filter press

B - Operations, Transporting

01

D

B01D 25/164 (2006.01) B30B 9/04 (2006.01) B30B 9/22 (2006.01)

Patent

CA 2163639

In supplying material for pressing (37) into the press chamber of a filter press for separating solids and liquids, the filling operation (F) is done interruptedly in a first step (P1) at a fill opening (44). A press element (36) executes a plurality of pressings up to a constant stroke position (HS). Not until a second method step (P2) is the filling operation (F) interrupted, as soon as the pressing pressure exceeds a limit value (PS), whereupon the pressings are continued with shortened strokes. The method offers automatic adaptation of the prefilling time to the pressability of the materials. It thus becomes possible to prefill highly differently pressable material automatically and without specifying a command value in such a way that an optimal performance is attained in terms of the yield and the juice extraction output of a filter press.

Pendant une première étape (P1) d'amenée de matière à presser (37) à la chambre de pressage d'un filtre-presse dans lequel cette matière est séparée en matières liquides et en matières solides, le remplissage (F) à travers un orifice de remplissage (44) se fait de manière continue. Un élément de pressage (36) effectue plusieurs courses de pressage jusqu'à une position constante (HS). Ce n'est que pendant une deuxième étape du procédé (P2) que le remplissage (F) est interrompu dès que la pression de pressage dépasse une valeur limite (PS), les courses de pressage étant ensuite reprises mais raccourcies. Ce procédé permet d'adapter automatiquement le temps de pré-remplissage à l'aptitude au pressage de la matière, ce qui permet de pré-remplir automatiquement le filtre-presse sans valeurs nominales prédéterminées avec des matières ayant des aptitudes au pressage très différentes et d'atteindre un rendement et une capacité de production de jus optimaux.

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