Refiner

Details Refiner Refiner

B - Operations, Transporting

02

C

B02C 7/12 (2006.01) D21B 1/04 (2006.01) D21D 1/30 (2006.01)

Patent

CA 2528398

A refining surface for a refiner intended for defibrating lignocellulose- containing material, the refiner comprising at least two refining surfaces (1, 2) arranged coaxially relative to each other, at least one of which rotates around a shaft, and between which the material to be defibrated is fed. The refining surfaces (1, 2) comprise grooves and between them ridges (11), at least part of the refining surface (1, 2) ridges (11) being formed of at least two different ridge parts (11a, 11b) connected to each other in such a way that one ridge part (11a, 11b) is farther ahead in the rotation direction of the refining surface (1, 2) than the other ridge part (11a, 11b). Further, at least in some ridge parts (11a, 11b), the front wall (14) in the rotation direction (A) of the refining surface (1, 2) is over at least part of its length substantially inclined.

L'invention concerne la surface de raffinage d'un raffineur destiné à défibrer un matériau contenant de la lignocellulose, ledit raffineur comprenant au moins deux surfaces (1, 2) de raffinage disposées de manière coaxiale l'une par rapport à l'autre, l'une d'entre elles au moins tournant autour d'un arbre, et entre lesquelles est injecté le matériau à défibrer. Les surfaces (1, 2) de raffinage comprennent des rainures et, entre celles-ci, des nervures (11), une partie au moins des nervures (11) de la surface (1, 2) de raffinage étant formée d'au moins deux parties différentes (11a, 11b) connectées l'une à l'autre de manière qu'une des parties (11a, 11b) soit située plus en avant dans la direction de rotation de la surface (1, 2) de raffinage que l'autre partie (11a, 11b). De plus, au moins dans certaines parties (11a, 11b) des nervures, la paroi avant (14) dans la direction (A) de rotation de la surface (1, 2) de raffinage se situe sur au moins une partie de sa longueur sensiblement inclinée.

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