Press device, particularly for the removing of water from a web of paper
AssigneeJ. M. Voith GmbH
InventorsWilhelm Wanke, Ludwig Hauser, Karl Steiner
Life of this patent
Estimating the term…
Abstract
The disclosure concerns a press device for a paper making machine, and particularly concerns an extended nip press. A hollow tubular, stationary support body extends around a supporting beam, which is a flexing beam. Hydraulic piston-cylinder combinations extend between the beam and the supporting body in a press plane. A radially non-displaceable press shoe is supported on the support body and faces toward a counter-roll to define a press nip between them. The outwardly facing surface of the press shoe is concave in the circumferential direction of the support body. The amount of pressure in the hydraulic supporting means determines the press force which prevails in the press zone.
Claims18
A press for web material, comprising:
- a counter-roll;
- a stationary support body with a continuous, generally cylindrical outer surface, the body being hollow within itself;
- an elastically deformable, tubular shell supported around the support body and rotatable therearound;
- a press shoe attached to the outer surface of the support body and non-movable radially of the support body;
- the press shoe having a pressing surface which is concavely shaped in the circumferential direction of the support body and which faces outwardly of the support body and faces toward the counter-roll for pressing against the shell and a web between the shell and the counter-roll, thereby defining a press nip in which a pressing force is exerted between the press shoe and the counter-roll;
- a flexing beam extending through the hollow support body;
- hydraulic supporting means for exerting a force for supporting the support body, the hydraulic supporting means being located between the beam and the support body;
- means for varying the force exerted by the hydraulic supporting means both for adjusting the pressing force between the press shoe and the counter-roll and for controlling sagging of the support body.
Dependencies are inferred from the claim text.