Method and apparatus for the lateral sealing of a drainage wedge in a twin-wire paper machine
AssigneeVoith Sulzer Papiermaschinen GmbH
InventorsJurgen Banning, Christian Schiel
Life of this patent
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Abstract
Apparatus and method for laterally sealing a drainage gap of a twin-wire paper machine. This lateral sealing has contact only with the lower wire. Between the upper wire and the lateral sealing, sealing is preferably effected by sealing water. Since this lateral sealing is elastic, it can adapt itself to the movements of the lower wire.
Claims17
A method for laterally sealing a substantially wedge-shaped gap in a common drainage path between two wires of a twin-wire paper machine, the two wires for conveying a pulp slurry therebetween, the method comprising:
- providing a sealing spacer between the two wires at lateral edges of the wires fixed in the direction of travel of the pulp slurry when the paper machine is in operation producing paper;
- providing a gap between the sealing spacer and an upper one of the two wires;
- and
- sealing the gap with a sealing liquid.
Apparatus in combination with and for laterally sealing a substantially wedge-shaped gap in a common drainage path between two wires of a twin-wire paper machine, the two wires for conveying a pulp slurry therebetween, the apparatus comprising:
- a sealing spacer disposed between the two wires at lateral edges of the two wires, the sealing spacer being fixed in the direction of travel of the pulp slurry when the paper machine is in operation producing paper;
- a gap being provided between the sealing spacer and an upper one of the two wires;
- and
- a fluid connection for providing sealing fluid into the gap between the upper wire and the spacer.
Apparatus in combination with and for laterally sealing a substantially wedge-shaped gap in a common drainage path between two wires of a twin-wire paper machine, the two wires for conveying a pulp slurry therebetween, the apparatus comprising a sealing assembly comprising a substantially wedge-shaped sealing spacer extending in the direction of travel of a pulp slurry carried by the wires, the spacer not being in contact with an upper one of the wires and resting on a lower one of the wires, a lateral support wall for the spacer being provided at a location transversely away from the wires and a sealing-liquid connection for providing a sealing liquid into the wedge-shaped gap.
Dependencies are inferred from the claim text.