Method of cleaning a drying wire in a paper making machine
AssigneeTamefelt Oy AB
InventorKristian V. Lundstrom
Life of this patent
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Abstract
A method of cleaning a drying wire of a paper making machine using at least one pressurized water jet directed against the surface of the wire by a nozzle. The nozzle is supplied with water under a pressure higher than normal water pipe pressure, preferably a pressure of 430-1300 psi. The increased pressure of the water jet reduces the amount of water remaining in the wire due to increased water flow passing through the wire. Consequently the increased pressure of the water jet makes it possible to clean the drying wire during production and web formation.
Claims8
A method of cleaning a drying wire in a drying section of a paper making machine by subjecting the surface of the drying wire to at least one pressurized water jet, wherein the drying wire is formed with a transverse joint or seam preventing the use of suction boxes to remove water therefrom, comprising the steps of maintaining the water jet at a pressure selected within a pressure range of approximately 430 psi to approximately 1300 psi to produce a pressurized water flow;
- impinging the pressurized flow from the water jet onto the drying wire so that the pressurized flow from the water jet impinges on the drying wire in a direction substantially orthogonal to the surface thereof so that cleaning of the drying wire occurs during production of paper with said paper making machine and water remaining in the drying wire does not disturb the web formation;
- wherein the pressurized flow volume increases at progressively higher pressures while the amount of water remaining in the drying wire decreases at progressively higher pressures within said pressure range;
- and reciprocating the water jet transversely along the drying wire.
A method of cleaning a drying wire in a drying section of a paper making machine by subjecting the surface of the drying wire to at least one pressurized water jet, wherein the drying wire is formed with a transverse joint or seam preventing the use of suction boxes to remove water therefrom, comprising the steps of maintaining the water jet at a pressure selected within a pressure range of at least greater than 600 psi to approximately 1300 psi to produce a pressurized water flow;
- impinging the pressurized flow from the water jet onto the drying wire so that the pressurized flow from the water jet impinges on the drying wire in a direction substantially orthogonal to the surface thereof such that cleaning of the drying wire occurs during production of paper with said paper making machine and water remaining in the drying wire does not disturb web formation;
- wherein the pressurized flow volume increases at progressively higher pressures while the amount of water remaining in the drying wire decreases at progressively higher pressures within said pressure range;
- and reciprocating the water jet transversely along the drying wire.
Dependencies are inferred from the claim text.