Deflection controlled roll
AssigneeVoith Paper Patent GmbH
InventorRolf van Haag
Life of this patent
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Abstract
Deflection controlled roll that includes a rotating roll jacket, a rotationally fixed yoke arranged to axially pass through the roll jacket, and a plurality of hydrostatic support elements arranged on the yoke in a direction of a roll axis which are chargeable with a pressure fluid to exert a supporting force on an inner side of the roll jacket. A device for influencing a roll temperature via at least one fluid flow, which is separate from the pressure fluid is also included. The support elements are arranged into a plurality of controllable roll zones arranged along the roll axis. The temperature influencing device is structured and arranged to locally charge respective roll zones depending upon a pressure on the support elements in a respective roll zone.
Claims33
A deflection controlled roll comprising:
- a rotating roll jacket;
- a rotationally fixed yoke arranged to axially pass through said roll jacket;
- a plurality of hydrostatic support elements arranged on said yoke in a direction of a roll axis which are chargeable with a pressure fluid to exert a supporting force on an inner side of said roll jacket;
- a device for influencing a roll temperature via at least one fluid flow, which is separate from the pressure fluid;
- said support elements being arranged into a plurality of controllable roll zones arranged along said roll axis,
- wherein said temperature influencing device is structured and arranged to locally charge roll zones depending upon a pressure on said support elements in a respective roll zone.
A process for operating a deflection controlled roll that includes a rotating roll jacket, a rotationally fixed yoke arranged to axially pass through the roll jacket, and a plurality of hydrostatic support elements arranged on the yoke in a direction of a roll axis, the process comprising:
- arranging the plurality of hydrostatic support elements into a plurality of controllable roll zones along the roll axis;
- charging the plurality of hydrostatic support elements of each controllable roll zone with a pressure fluid to exert a supporting force on an inner side of the roll jacket;
- and
- supplying at least one fluid flow, which is separate from the pressure fluid, into each controllable roll zone depending upon a pressure on the plurality of hydrostatic support elements in a respective controllable roll zone.
Dependencies are inferred from the claim text.