A separation device with dual drives and a method of...

B - Operations – Transporting – 01 – D

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B01D 21/02 (2006.01) B01D 21/06 (2006.01) B01D 21/20 (2006.01) B01F 7/18 (2006.01) B01F 7/30 (2006.01) D21D 5/00 (2006.01)

Patent

CA 2736782

The invention provides a separation device (20) for separating pulp from a feed material, the separation device comprising a tank (1 ) for receiving the feed material, a rake assembly (21 ) mounted for rotation within the tank (1) to move pulp towards an outlet (22) thereof and a shearing device (23) for shearing pulp within the tank (1), the shearing device (23) being mounted for movement independently of the rake assembly (21). The invention also provides a method for reducing donutting in a separation device (20).

L'invention porte sur un dispositif de séparation (20) pour la séparation de pâte à partir d'une matière d'alimentation, le dispositif de séparation comprenant une cuve (1) pour la réception de la matière d'alimentation, un ensemble râteau (21) monté pour la rotation à l'intérieur de la cuve (1) pour déplacer la pâte vers une sortie (22) de celle-ci et un dispositif de cisaillement (23) pour le cisaillement de la pâte à l'intérieur de la cuve (1), le dispositif de cisaillement (23) étant monté pour se déplacer indépendamment de l'ensemble râteau (21). L'invention porte également sur un procédé pour la réduction de la formation d'un anneau dans un dispositif de séparation (20).

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