Refining apparatus of disc-type
AssigneeMetso Paper, Inc.
InventorThomas Arvidsson
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Abstract
A disc refiner is disclosed, including a shaft, a rotatable disc and a stationary disc, both with refiner elements. Between the stationary refiner elements and the stationary disc, axially deformable chambers are arranged, filled with an incompressible hydraulic medium, whereby the stationary refiner elements can move angularly in order to adjust themselves tangentially in parallel to the refiner elements of the rotatable disc, and the incompressibility of the hydraulic medium prevents stationary refiner elements from moving axially and impairing the axial stiffness.
Claims14
A disc refiner comprising a rotatable shaft, a rotatable disc mounted on said rotatable shaft including a first refining face, a stationary disc including a second refining face juxtaposed with said rotatable disc thereby defining a refining space between said first and second refining faces, first and second refiner elements mounted on said first and second refining faces, and at least one axially deformable hydraulic chamber acting between said stationary disc and said second refiner elements whereby said second refiner elements can adjust tangentially during operation of said disc refiner to maintain parallelism between said first and second refiner elements while retaining the axial stiffness thereof.
Dependencies are inferred from the claim text.