B - Operations – Transporting – 02 – C
Patent
B - Operations, Transporting
02
C
B02C 7/12 (2006.01) D21D 1/30 (2006.01)
Patent
CA 2552762
A refining element intended for refiners of disc-type for working fibrous material, where the refining element (10) is provided with a pattern of bars (13, 14) and intermediate grooves, and the refining element (10) is divided into an inner in-feed portion (11) with coarse bars (13) and an outer portion (12) with fine bars (14). The transition (15) between the inner portion and outer portion (11 and 12, respectively) extends arc-shaped over the refining element at varying distance from the inner edge (16) of the refining element.
La présente invention concerne un élément de raffinage destiné à des raffineurs du type à disque utilisés pour travailler les matières fibreuses. L'élément de raffinage (10) est prévu avec une configuration de barres (13, 14) et de rainures intermédiaires, ledit élément de raffinage (10) étant divisé en une partie intérieure d'entrée (11) dotée de grosses barres (13) et d'une partie extérieure (12) dotée de fines barres (14). La transition (15) entre la partie intérieure et la partie extérieure (11 et 12) s'étend en forme d'arc au-dessus de l'élément de raffinage à une distance variable du bord interne (16) de l'élément de raffinage.
Holmsten Lars
Purolainen Pertti
Virving Nils
Fetherstonhaugh & Co.
Metso Paper Inc.
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