D - Textiles – Paper – 21 – D
Patent
D - Textiles, Paper
21
D
D21D 1/30 (2006.01) B02C 7/12 (2006.01)
Patent
CA 2235544
A pair of co-operating refining elements (10, 11) intended for a disc refiner for finely disintegrating and refining lump-shaped lignocellulosic material in a refiner gap (5, 6) between two opposed refining discs (1, 2). The outer portion (6) of the refiner gap is angular in relation to the radial plane, and the refining disc (2) located outside the outer portion (6) of the refiner gap is rotary. The refining elements (10, 11) are intented to be placed directly in front of each other on opposed refining discs in this outer portion (6) of the refiner gap. The refining element (10) located inside is provided with at least one wing (14) freely projecting in the direction to the inner portion (5) of the refiner gap. The refining element (11) located outside has an inlet portion (15) located directly in front of the wing (14) which is formed with a concavely curved surface (16). The wing is provided to throw the material against the curved surface (16) for changing the direction of movement of the material into the outer angular portion (6) of the refiner gap.
L'invention porte sur une paire d'organes raffineurs (10, 11) fonctionnant de concert destinés à une raffineuse à disques permettant de désagréger finement et de raffiner un matériau lignocellulosique en forme de bloc dans un passage de raffinage (5, 6) entre deux disques raffineurs opposés (1, 2). La partie extérieure (6) du passage de raffinage forme un angle par rapport au plan radial et le disque raffineur (2) situé en dehors de la partie extérieure (6) du passage de raffinage est rotatif. Les organes raffineurs (10, 11) sont conçus pour se placer juste en face l'un de l'autre sur des disques raffineurs opposés, dans cette partie extérieure (6) du passage de raffinage. L'organe raffineur (10) situé à l'intérieur est pourvu d'au moins une aile (14) saillant librement en direction de la partie intérieure (5) du passage de raffinage. L'organe raffineur (11) situé en dehors comporte une section d'entrée (15) se trouvant juste en face de l'aile (14) pourvue d'une face courbe concave (16). Cette aile a pour but de projeter le matériau contre la face recourbée (16) afin de modifier le sens de déplacement du matériau dans la partie angulaire extérieure (6) du passage de raffinage.
Kjellqvist Olof
Nastren Christer
Fetherstonhaugh & Co.
Sunds Defibrator Industries Ab
Valmet Fibertech Aktiebolag
LandOfFree
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