Filter for fibrous suspensions

Details Filter for fibrous suspensions Filter for fibrous suspensions

D - Textiles, Paper

21

D

D21D 5/02 (2006.01) B01D 29/35 (2006.01) B01D 29/86 (2006.01)

Patent

CA 2435616

A rotary filter (1) for fibrous suspensions (S) is disclosed comprising a rotor (2) coaxially arranged inside a filtering basket (4), an annular hollow space (8) being defined between them. In th eannular hollow space (8) there are one or more wing profiles (15) fixed to the outer lateral surface (2a) of the rotor (2) extending in an axial direction along the rotor (2). The outer surface 816) of each wing profile (15) facing the filtering basket has one or more discontinuity zones (16b, 16d) whose points have an increasing distance from the longitudinal axis (3) of the rotor (2) when running on the outer surface (16) of said wing profile (15) in a direction opposite to the rotation direction (V) of the rotor (2).

Le filtre rotatif (1) pour fibres en suspension (S) comprend un rotor (2) monté dans l'axe et à l'intérieur d'un panier filtre (4), un intervalle annulaire (8) étant réservé entre rotor et panier. L'intervalle annulaire (8) est occupé par des profils en ailettes (15) prenant sur la surface latérale extérieure (2a) du rotor (2) et se présentant le long du rotor (2) dans l'axe d'une génératrice. La surface extérieure (16) de chaque profil en ailette (15) tourné vers le panier du filtre comporte au moins une zone de discontinuité (16b, 16d) dont les points définissent une distance allant croissant en partant de l'axe longitudinal (3) du rotor (2) pendant l'écoulement sur la surface extérieure (16) dudit profil en ailette (15) dans le sens opposé du sens de rotation (V) du rotor (2).

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