High consistency damless refiner plate for wood fibers

Details High consistency damless refiner plate for wood fibers High consistency damless refiner plate for wood fibers

D - Textiles, Paper

21

D

D21D 1/30 (2006.01)

Patent

CA 2242503

The refiner plate of this invention has a pattern of interlocking or nested elements having a "I"s "T"s, "S"s, "L"s, "F"s, "E"s, or "H"s shape which form channels. The body of the elements forms the refiner bars (50) which hold the fibers as they move between the refiner plates in a disk refiner (20). The pattern of elements retard the flow of fibers while at the same time providing a large open area for steam to pass through the refiner disks (28, 30). The segments making up the elements produce a refiner bar (50) which is reinforced for higher strength.The shape of the elements has an increased edge length exposed to the flow of fibers.

Le motif de la plaque de raffinage de la présente invention est constitué d'éléments emboîtés ou disposés en chicanes ayant la forme d'un I, T, S, L, F, E ou H formant des rainures. Le corps des éléments forme les barres de raffinage (50) qui retiennent les fibres lorsqu'elles se déplacent entre les plaques de raffinage dans un raffineur à disques (20). Le motif des éléments retarde l'écoulement des fibres tandis qu'il fournit au même moment une grande zone ouverte pour le passage de la vapeur à travers les disques de raffinage (28, 30). Les segments constituant les éléments donnent une barre de raffinage (50) renforcée pour plus de résistance. La forme des éléments présente une bordure plus longue exposée à l'écoulement des fibres.

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