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US 12,188,177 B2Granted
Apparatus for grinding a fibrous material suspension
AssigneeAndritz Inc.
InventorsThomas Reisinger, Peter Ortner, Daniel Hogue, Christian Harpin
Life of this patent
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Abstract
A refiner for refining pulps, includes a shaft, a rotor disc attached firmly to the shaft and a shaft bearing, the rotor disc being disposed between two stator discs and forming a refining chamber between the rotor disc and the stator discs. The shaft is movable in an axial direction and the shaft bearing is connected hydraulically to the refining chamber, ensuring low wear on the rotor discs and stator discs and, in particular, on the refiner plates on these discs, also in continuous operation.
Claims20
A refiner for refining pulps in a fiber pulp suspension, comprising:
- a shaft (1) extending in an axial direction and being movable in the axial direction (7);
- a rotor disc (2) attached to the shaft (1);
- a shaft bearing (3) associated with the shaft (1);
- and
- two stator discs (4, 5) forming a refining chamber (6) between them, at least one of the stator discs (4, 5) being slidable in the axial direction (7) and the refining chamber (6) having an adjustable size via adjustment of a spacing between the respective stator discs (4, 5), wherein
- the rotor disc (2) is disposed between the two stator discs (4, 5),
- the rotor disc (2) is movable between the stator discs (4, 5) by movement of the shaft (1) in the axial direction (7), and
- the shaft bearing (3) is connected hydraulically to the refining chamber (6).
5 more elements
Dependencies are inferred from the claim text.