Screen cylinder

Details Screen cylinder Screen cylinder

D - Textiles, Paper

21

D

D21D 5/16 (2006.01) B01D 29/44 (2006.01)

Patent

CA 2238511

The present invention relates to a screen cylinder for screening fiber suspensions of the wood processing industry. The screen cylinder comprises a rotationally symmetric screen surface located on the side of the pulp to be screened, and support rings supporting the screen surface on the opposite side; the screen surface mainly comprising grooves and screen apertures in connection with the grooves, the grooves being comprised of a side surface on the upstream side, a bottom surface, and a side surface on the downstream side, characterized in that the bottom surface of the groove rises towards the side surface of the upstream side.

Cette invention porte sur un cylindre destiné au criblage de suspensions fibreuses dans le cadre de l'industrie de transformation du bois. Ce cylindre de criblage comporte une surface de criblage à rotation symétrique se trouvant du coté de la pâte à cribler tandis que du côté opposé se trouvent des anneaux de support destinés à soutenir la surface de criblage. Celle-ci est essentiellement constituée de gorges et d'ouvertures de criblage en relation avec celles-ci. Ces gorges, qui comportent une face latérale sur le coté aval, un fond et une face latérale sur le côté amont, se caractérisent par le fait que le fond de la gorge s'élève vers la face latérale du côté amont.

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