Washing apparatus comprising a float body

D - Textiles – Paper – 21 – C

Patent

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Details

D21C 9/04 (2006.01)

Patent

CA 2284693

In a washing apparatus for washing cellulose pulp, comprising a vertical, column-shaped washing vessel (2), and a screen unit (7) which is movable in the washing vessel, during a screening phase, at a first speed, from an upper position to a lower position, and, during a return movement, at a substantially higher speed, from the lower position to the upper position, there is a float body (30) which exerts a buoyancy force on the screen unit.

L'invention concerne un appareil de lavage de pâte à papier, comprenant une cuve (2) verticale en forme de colonne, et une unité écran (7). L'unité écran (7) se déplace dans la cuve de lavage, d'une position haute à une position basse à une première vitesse pendant une phase de classage et de la position basse à la position haute à une vitesse nettement plus élevée pendant un mouvement de retour. Un corps flottant (30) exerce une force de flottabilité sur l'unité écran.

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