Sealing device, suction roll and method for producing and/or processing a paper, cardboard or tissue web

Patent metadata

Field	Value
Publication number	US-9650743-B2
Application number	US-201314421210-A
Country	US
Kind code	B2
Filing date	Aug 9, 2013
Priority date	Aug 15, 2012
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

A sealing device seals a pressure or vacuum zone of a roller having a roller sleeve which is movable in relation to the sealing device. The sealing device has a sealing strip with an upper side forming a sealing face and a lubricant channel adjoining the sealing face and is formed by at least one groove-type depression in the sealing strip, which extends in the longitudinal direction of the sealing strip. When the sealing device is installed, the sealing face and the opening of the groove-type depression face toward the inner side of the roller sleeve. The lubricant channel is hooked up to a supply line which at least in portions runs within the sealing strip and delivers lubricant between the inner side of the roller sleeve and the sealing face. The sealing strip, at each of its two ends, has a wall delimiting the lubricant channel in its length.

First claim

The invention claimed is:

1. A sealing device for sealing a pressure or vacuum zone of a roller having a roller sleeve that is movable relative to the sealing device, the sealing device comprising:
a sealing strip having an upper side with a sealing face and a lubricant channel adjoining said sealing face, said lubricant channel being at least one groove-type depression formed in said sealing strip and extending in a longitudinal direction of said sealing strip;
wherein, on installation of said sealing device in the roller, said sealing face and an opening of said groove-type depression face toward an inner side of the roller sleeve;
at least one supply line hooked up to said lubricant channel, said at least one supply line, at least in portions thereof, running within said sealing strip and delivering lubricant to between the inner side of the roller sleeve and said sealing face; and
said sealing strip having a length delimited by two ends and a respective wall integrally formed at each of said two ends delimiting a length of said lubricant channel.

2. The sealing device according to claim 1 , wherein a central portion has a length of two or more meters and each of the two end portions has a length of 20 cm or less.

3. The sealing device according to claim 1 , wherein said supply line comprises a central supply duct extending within said sealing strip along the longitudinal direction, and at least one riser line interconnecting said lubricant channel and said central supply duct.

4. The sealing device according to claim 3 , wherein said central supply duct, along a longitudinal extent thereof, has a variable cross-sectional area and/or cross-sectional geometry.

5. The sealing device according to claim 1 , wherein said sealing face and said lubricant channel are disposed on said upper side of said sealing strip such that, with said sealing strip properly installed in the roller and viewed in an intended rotation direction of said roller sleeve, said supply duct is disposed upstream of a substantial portion of the sealing face.

6. The sealing device according to claim 1 , wherein said sealing strip has a width delimited by a front side and a rear end side, between which said upper side of the sealing strip extends, wherein said front and rear end sides, and said sealing face, and said lubricant channel are disposed such that, with said sealing device properly installed in the roller and viewed in the intended rotation direction of the roller sleeve, the roller sleeve runs onto said sealing strip at said front end side, initially sweeps said lubricant channel and subsequently at least the substantial part of the sealing face, and runs off said sealing strip at said rear end side.

7. The sealing device according to claim 6 , wherein said front side and rear end side extend substantially parallel with one another.

8. The sealing device according to claim 1 , wherein said lubricant channel, when viewed in a sectional plane that is perpendicular to the longitudinal extent of said sealing strip, has a lowest point from which a front side wall extends in a direction of the front end side and a rear side wall extends in a direction of the sealing face, wherein an upper edge of said front side wall adjoins the front end side and an upper edge of said rear side wall adjoins said sealing face, and wherein, with said sealing strip properly installed in the roller, a straight line interconnecting said two upper edges forms an angle of 1° to 89° with a horizontal.

9. The sealing device according to claim 1 , comprising a sealing-strip holder for holding said sealing strip, said the sealing-strip holder having a holding portion with at least one guide face on which said sealing strip is displaceably mounted by way of at least one of two sides of a front or rear end side and wherein said sealing strip, on proper installation in the roller and viewed along a path in the radial direction of the roller, is displaceable from and to the inner side of the roller sleeve face, wherein the supply line at at least one point on at least one of the two sides of front and rear end side is routed out of said sealing strip, and wherein said holding portion has at least one clearance through which that portion of the supply line that is in each case routed out of the at least one side of front or rear end side of the sealing strip is routed through said sealing-strip holder, and wherein the at least one clearance is configured in such a manner that the sealing strip is movable along the path in relation to said sealing-strip holder together with the portion of said supply line which is routed out thereof.

10. The sealing device according to claim 9 , wherein the at least one clearance is hole-shaped or formed as an upwardly open groove.

Assignees

• Voith Patent Gmbh

Inventors

• Erkelenz Marc
• Honold Jochen

Classifications

• D21F3/10 Primary

  Suction rolls, e.g. couch rolls · CPC title

• F16C13/00

  Rolls, drums, discs, or the like (guide rollers in feeding webs B65H27/00; calender rolls, bearings therefor D21G1/02; rotary drums or rollers for heat-exchange or heat-transfer apparatus F28F5/02); Bearings or mountings therefor · CPC title

• F16J15/162 Primary

  Special parts or details relating to lubrication or cooling of the sealing itself (F16J15/324, F16J15/3404, F16J15/40 take precedence) · CPC title

• D21F7/00 Primary

  Other details of machines for making continuous webs of paper · CPC title