Refining apparatus of disc-type

B - Operations – Transporting – 02 – C

Patent

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Details

B02C 7/12 (2006.01)

Patent

CA 2610603

The present invention relates to a refining apparatus of disc-type. The same consists of a shaft (1), having a rotatable disc (2) equipped with a set of refiner elements (4) and a stationary disc (3), also this having a set of refiner elements (5). Characteristic of the invention is that, between the stationary refiner elements (5) and the stationary disc (3), one or more axially deformable chambers (6) are arranged. These are filled with a preferably constant amount of an incompressible hydraulic medium, which is allowed to move within or between the chambers. Thus, the set of stationary refiner elements (5) can move angularly in order to adjust itself tangentially in parallel to the set of refiner elements (4) of the rotatable disc. Simultaneously, the incompressibility of the hydraulic medium prevents the set of stationary refiner elements (5) from moving in a purely axial direction and thereby impairing the axial stiffness of the machine. According to a described embodiment, with the set of stationary refiner elements being fixedly clamped to the stationary disc at the inner periphery thereof, also the radial parallelism of the disc gap can be adjusted, by adapting the amount of hydraulic medium in the deformable chambers.

L~objet de la présente invention est un raffineur de type de disque. Celui-ci est constitué d~un arbre (1), doté d~un disque pivotant (2) équipé d~un ensemble d~éléments raffineurs (4) et d~un disque stationnaire (3), celui-ci comprenant aussi un ensemble d~éléments raffineurs (5). L~invention est caractérisée en ce que une ou plusieurs chambres axialement déformables (6) sont agencées entre les éléments raffineurs stationnaires (5) et le disque stationnaire (3). Ces chambres sont remplies d~une quantité de préférence constante de milieu hydraulique incompressible, pouvant se déplacer à l~intérieur des chambres ou entre celles-ci. L~ensemble d~éléments raffineurs stationnaires (5) peut donc se déplacer de façon angulaire afin de s~ajuster tangentiellement, parallèlement à l~ensemble d~éléments raffineurs (4) du disque pivotant. Simultanément, l~incompressibilité du milieu hydraulique empêche l~ensemble d~éléments raffineurs stationnaires (5) de se déplacer dans une direction purement axiale et de porter ainsi atteinte à la rigidité axiale de la machine. Selon un mode de réalisation décrit, l~ensemble d~éléments raffineurs stationnaires solidement fixé au disque stationnaire à la périphérie interne de celui-ci permet également d~ajuster le parallélisme radial du trou du disque, en adaptant la quantité de milieu hydraulique dans les chambres déformables.

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