Screening arrangement

D - Textiles – Paper – 21 – D

Patent

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Details

D21D 5/02 (2006.01)

Patent

CA 2232665

An arrangement for screening pulp suspensions, comprising a casing (1) with an inlet (5) for inject and outlets (16, 18) for accept and reject. Between a stationary screening member (2) located in the casing (1) and a drum-shaped rotor (3) located inside the screening member, a screening zone (4) is formed. The inject inlet (5) is provided for the supply of the pulp to the lower portion of the inside of the rotor (3). At least one opening (6) is provided in the upper portion of the rotor (3) for transferring the pulp to the screening zone (4). The inside of the rotor (3) is formed for moving heavy impurities to a chamber (8, 13) in connection to one end of the rotor (3).

Dispositif d'épuration de suspensions de pâte comprenant une cuve (1) dotée d'une admission (5) pour l'injection et des sorties (16, 18) pour l'accepté et les rejets. Une zone d'épuration (4) est définie entre un élément d'épuration fixe (2) logé à l'intérieur de la cuve (1) et un rotor en forme de tambour (3) logé à l'intérieur de l'élément d'épuration. L'admission (5) pour l'injection permet l'alimentation en pâte de la partie inférieure de l'intérieur du rotor (3). Au minimum une ouverture (6) est ménagée dans la partie supérieure du rotor (3) pour permettre le transfert de la pâte dans la zone d'épuration (4). L'intérieur du rotor (3) est conçu pour assurer le déplacement des impuretés lourdes vers une chambre (8, 13) communiquant avec l'une de ses (3) extrémités.

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