Apparatus for filtering suspensions

D - Textiles – Paper – 21 – D

Patent

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D21D 5/02 (2006.01) B01D 33/21 (2006.01) B01D 33/23 (2006.01) D21D 5/06 (2006.01)

Patent

CA 2151593

An apparatus for filtering suspension is provided with rotatable annular vertical discs (4) covered with filter material and partly submerged in the suspension to be filtered. Each disc is provided with a number of cells (22) for receiving filtrate from the suspension as the disc is rotated. The cells of each disc communicate with a central filtrate chamber (7) via respective accumulation chambers (30) formed by wall means (31) in the filtrate chamber. Each accumulation chamber of each disc extends axially past the disc and has an outlet (32) which also extends axially past the disc. The advantage is that a more concentrated coarse fraction of the suspension can be achieved.

L'invention concerne un appareil de filtrage de suspensions constitué de disques annulaires rotatifs verticaux (4) recouverts d'un matériau filtrant et partiellement immergés dans la suspension à filtrer. Chaque disque présente plusieurs cellules (22) conçues pour recevoir le filtrat extrait de la suspension à mesure que le disque tourne. Les cellules de chaque disque communiquant avec une chambre à filtrat centrale (7) par l'intermédiaire de chambres d'accumulation (30) respectives formées par des parois (31) situées dans la chambre à filtrat. La chambre d'accumulation de chaque disque s'étend radialement au-delà de ce dernier et présente une sortie (32) s'étendant axialement au-delà dudit disque. L'avantage de cet appareil est qu'il permet de produire une fraction plus concentrée de particules grossières de la suspension.

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