Apparatus for cleaning a suspension, preferably a fiber mass...

B - Operations – Transporting – 03 – D

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B03D 1/16 (2006.01) B03B 5/00 (2006.01) B03D 1/14 (2006.01) D21F 1/70 (2006.01) D21B 1/32 (2006.01) D21C 5/02 (2006.01)

Patent

CA 2300094

An apparatus for cleaning a fiber mass suspension, the apparatus comprising a receptacle (1) and an inlet channel (2) and an outlet channel (3) for feeding the suspension into and for discharging it from the receptacle. In addition, the apparatus comprises air feed means for feeding air into the lower portion of the receptacle (1). The apparatus comprises at least one partition wall (4) dividing the receptacle into spaces in such a way that the supension may flow between the spaces at the lower portion and the upper portion of the partition wall, respectively. The air feeding means are positioned to feed air into one aeration space (5a), whereby the air separates impurities from the suspension and makes the suspension flow on different sides of the partition wall (4) upwards and downwards, respectively, so that a spiral flow is created around the partition wall from the inlet channel (2) into the outlet channel (3).

Appareil permettant de purifier une suspension de masse de fibres, qui comporte une cuve (1) ainsi qu'un canal d'entrée (2) et un canal de sortie (3) destinés respectivement à introduire la suspension dans la cuve et à l'en évacuer. De plus, ledit appareil comprend un moyen d'alimentation en air qui permet d'introduire de l'air dans la partie inférieure de la cuve (1). Ledit appareil comprend au moins une paroi de séparation (4) séparant la cuve en espaces, de telle manière que la suspension puisse s'écouler entre les espaces au niveau des parties inférieure et supérieure de la paroi de séparation, respectivement. Le moyen d'alimentation en air est placé de manière à introduire de l'air dans un espace de séparation (5a), l'air séparant ainsi les impuretés de la suspension et faisant couler la suspension sur différents côtés de la paroi de séparation (4) vers le haut et vers le bas, si bien qu'un écoulement en spirale est créé autour de la paroi de séparation depuis le canal d'entrée (2) vers le canal de sortie (3).

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