Filter of processing volume ratio adapted screw press type

Details Filter of processing volume ratio adapted screw press type Filter of processing volume ratio adapted screw press type

B - Operations, Transporting

30

B

B30B 9/14 (2006.01) B01D 29/23 (2006.01) B01D 29/46 (2006.01) B30B 9/26 (2006.01)

Patent

CA 2293725

A screw press type filter which comprises an alternately superposed arrangement of annular fixed plates (10) and annular movable plates (11), a filter cylinder (2) defining a fixed cylindrical space (12) by a row of openings of the fixed plates with both end portions of a screw (5) passed through this cylindrical space extending to inlet and outlet chambers (1, 3), and mechanisms (15, 16) for turning the movable plates in accordance with the rotation of the screw also provided, wherein the volumes of the spaces between adjacent ridges of the screws in the filter cylinder are reduced gradually from an inlet toward an outlet so that such a volume decrease corresponds to a gradual decrease in the water content of an object material being processed.

L'invention concerne un filtre de type presse à vis comprenant un dispositif alternativement superposé de plaques annulaires (10) fixes et de plaques annulaires (11) mobiles, un cylindre de filtre (2) définissant un espace cylindrique (12) constant à l'aide d'une rangée d'ouvertures ménagées dans les plaques fixes, les deux parties d'extrémité d'une vis (5) traversant ledit espace cylindrique qui s'étend vers des chambres d'entrée (1) et de sortie (3), et des mécanismes (15, 16) faisant tourner les plaques mobiles en fonction de la rotation de la vis. Les volumes des espaces situés entre les bords adjacents des vis du cylindre de filtre sont graduellement réduits d'une entrée vers une sortie, de sorte qu'une diminution du volume correspond à une diminution graduelle du contenu en eau d'un matériau objet traité.

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