Refining elements

B - Operations – Transporting – 02 – C

Patent

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Details

B02C 7/12 (2006.01) B02C 7/02 (2006.01) B02C 13/22 (2006.01) D21B 1/14 (2006.01) D21D 1/30 (2006.01)

Patent

CA 2311532

A pair of cooperating refining elements (10, 11) intended for a refiner for the working of lignocellulosic fiber material in a refining gap between two opposed refining discs rotating relative to each other. The refining elements (10, 11) are intended to be positioned directly in front of each other on opposed refining discs. The refining elements (10, 11) are further provided with a plurality of projecting working means in the form of pins (12, 13) with substantially circular cross section, where the pins on one of the refining elements are arranged to extend into interspaces between the pins on the other refining element. The refining elements further are provided with a number of flow restrictions in the form of strips (15, 16) which substantially extend in the circumferential direction.

Paire d'éléments de raffinage coopérants (10, 11) destinés à un raffineur pour le traitement de matière fibreuse lignocellulosique, dans un espace de raffinage situé entre deux disques de raffinage opposés, rotatifs l'un par rapport à l'autre. Lesdits éléments de raffinage (10, 11) sont destinés à être positionnés directement en face l'un de l'autre, sur les disques de raffinage opposés. Ils (10, 11) sont, de plus, dotés de plusieurs moyens de traitement saillants, se présentant sous forme de dents (12, 13) de section sensiblement circulaire, les dents d'un des éléments de raffinage étant disposées de sorte qu'elle s'étendent dans les espaces situés entre les dents de l'autre élément de raffinage. Ils sont aussi doté de plusieurs restricteurs de débit se présentant sous forme de rainures (15, 16) s'étendant sensiblement dans le sens circonférentiel.

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