Filter press

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 25/127 (2006.01) B01D 25/172 (2006.01)

Patent

CA 2429984

A filter press (1) for the filtration of suspensions, comprises a stack of plate-like filter elements (5) which may be pressed against each other in a sealing manner in a parallel horizontal arrangement when in a filtering position. The filter elements (5) thus enclose a filter chamber in pairs, defined on at least one side by a filtering medium. Furthermore, the filter elements (5) may be transferred to an emptying position, in which the neighbouring filter elements (5) have a separation from each other, permitting a removal of the filter cake from the filter chamber. According to the invention, in order to reduce the height of construction of said filter press (1), or with unchanged height, to increase the filter area, the filter elements (5) are inclined in alternate directions relative to each other in the emptying position, such that the separation between neighbouring filter elements (5) is increased in the direction for emptying of the filter cake.

L'invention concerne un filtre-presse (1) permettant de filtrer des suspensions, comprenant un empilage d'éléments filtrants (5) en forme de plaques qui peuvent être comprimés les uns contre les autres de manière étanche, de façon horizontale et parallèle, dans une position de filtration. Les éléments filtrants (5) forment deux à deux une chambre de filtration qui est délimitée au moins d'un côté par un milieu filtrant plan. Les éléments filtrants (5) peuvent en outre être placés en position de purge, position dans laquelle des éléments filtrants (5) voisins sont espacés selon un écartement permettant l'évacuation du gâteau de filtre de la chambre de filtration. L'objectif de l'invention est de réduire l'encombrement en hauteur de ce filtre-presse (1), ou d'augmenter la surface de filtration sans modifier l'encombrement en hauteur. A cet effet, les éléments filtrants (5) sont, en position de purge, inclinés alternativement en sens inverse les uns par rapport aux autres de sorte que l'écartement entre des éléments filtrants (5) voisins augmente dans le sens de sortie du gâteau de filtre.

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