EP2885455B1 - Suction roll for a machine for producing and/or processing a paper, cardboard or tissue web - Google Patents

Suction roll for a machine for producing and/or processing a paper, cardboard or tissue web Download PDF

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Publication number
EP2885455B1
EP2885455B1 EP13747398.9A EP13747398A EP2885455B1 EP 2885455 B1 EP2885455 B1 EP 2885455B1 EP 13747398 A EP13747398 A EP 13747398A EP 2885455 B1 EP2885455 B1 EP 2885455B1
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EP
European Patent Office
Prior art keywords
roller
sealing strip
sealing
lubricant
line
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EP13747398.9A
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German (de)
French (fr)
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EP2885455A1 (en
Inventor
Marc Erkelenz
Jochen Honold
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Voith Patent GmbH
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Voith Patent GmbH
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Publication of EP2885455A1 publication Critical patent/EP2885455A1/en
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Publication of EP2885455B1 publication Critical patent/EP2885455B1/en
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/10—Suction rolls, e.g. couch rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/14—Drying webs by applying vacuum
    • D21F5/143—Drying webs by applying vacuum through perforated cylinders

Definitions

  • the invention relates to a roller with an overpressure or underpressure zone according to the preamble of claim 1.
  • Sealing devices in suctioned or blown rolls for paper, board or tissue machines must reliably seal the overpressure or underpressure zone against the environment in which normal pressure prevails.
  • the sealing surface of each sealing strip of the sealing device is employed against the inside of the rotating roll shell to seal the overpressure or vacuum zone.
  • it is attempted to introduce a lubricant between the sealing surface and the inside. This is usually done with spray tubes, which are arranged in the direction of rotation of the roller in front of the first sealing strip of the overpressure or underpressure zone.
  • the lubricant is applied to the inside of the roll shell of this transported by its rotation to the individual sealing strips, whereby viewed in the direction of rotation decreases the lubricant supply from sealing strip to sealing strip.
  • a large amount of lubricant must be used, which but only a small part of the actual lubrication of the sealing strips to good and otherwise contributes to unwanted rewetting of the fibrous web.To solve this problem is from the US 2 269 837 is a sealing strip with integrated lubrication known.
  • a preferred embodiment of this invention further proposes here a lubricant channel provided on the upper side of the roller in the form of a side view the sealing surface arranged in the longitudinal direction of the sealing strip, ie in the cross machine direction of the roller, extending groove-like depression.
  • a roller for a machine for the production or processing of a fibrous web wherein the roller comprises a movable roll shell and an inside or inside the roll shell and in comparison to the roll shell rotatable overpressure or underpressure zone, which with respect to the environment by means of at least one sealing strip sealed sealing means is comprehensive, wherein the sealing strip is limited in its width by a front and a rear end face and in the radial direction of the roller to the inside of the roll shell and away from this movable, and wherein the sealing strip in the region of the inside of the movable Rolling jacket facing sealing surface comprises at least one connected to a supply line lubricant outlet opening, by means of which lubricant between the inside of the roll shell and the sealing surface can be brought, wherein the supply line extending within the sealing strip n part and outside the sealing strip but within the roller extending part.
  • the invention is characterized in that the part of the supply line running inside the roller has on its length guided outside the sealing strip a first and second line section, wherein the first line section is longer than the second line section and the second line section in comparison to the first line section biegeflexibler is formed.
  • the bend-flexible, short second line section Due to the bend-flexible, short second line section, a free displaceability of the sealing strip relative to the inside of the roll shell is ensured in the radial direction of the roll.
  • the first line section of the inside of the roller but outside the sealing strip extending part of the supply line can be made resistant to bending and therefore stable.
  • the bend flexible second line section is particularly important to ensure that it runs so that it does not scrub during movement of the sealing strip on components within the roller.
  • the more rigid first line section may, for example, be embodied by one or more steel tubes.
  • the flexurally flexible second line section can be embodied, for example, by one or more plastic hoses, in particular rubber hoses, which, for example, can be reinforced with a metal mesh or mesh.
  • the bending-resistant first line section prefferably begins at the at least one end of the roll and to extend in the direction of the sealing strip in the roll. It is also conceivable that the flexurally flexible second line section at a maximum distance of one meter from the at least one point begins at which the supply line is guided out of the sealing strip. It is conceivable that the flexurally flexible second line section has a length of 15cm to 200cm, especially 20cm to 150cm.
  • each of the two roller ends comprises a roller cover and the supply line is guided on at least one of the roller cover from the roller.
  • the bendable second line section begins at the point at which the supply line is guided out of the sealing strip.
  • the supply line preferably has a fourth line section which is integral or inseparably connected to the sealing strip.
  • the central supply channel and the at least one riser line and a third line section detachably connected to the fourth line section extend outside the sealing strip and preferably at least one of the two roll ends is guided. This makes it possible that the sealing strip, for example. In their replacement or maintenance easily connected to the lubricant supply and can be separated from this again.
  • At least one connecting element for example in the form of a sleeve sealed by means of an O-ring, is provided by means of which the third and fourth line sections are detachably connected to one another that is, according to this embodiment, the fourth conduit section extends substantially within the sealing strip and terminates at the connecting element.
  • the third line section is then guided outside the sealing strip and is detachably connected to the fourth line section via the at least one connecting element.
  • the fourth line section extends in such a branched manner within the sealing strip that it is guided out of the sealing strip at several points, for example, in the longitudinal direction of the sealing strip.
  • a connecting element is then preferably arranged in the region of each point on which a branch of the fourth line section is guided out of the sealing strip by means of which the respective branch is connected to the third line section.
  • the third line section is composed of the first and second line sections.
  • the sealing device comprises a sealing strip holder for holding the sealing strip
  • the sealing strip holder has a holding portion with at least one guide surface along which the sealing strip with at least one of the two sides of the front and rear end side in the radial direction the roller viewed from and to the inside of the roll shell surface and is slidably mounted
  • the supply line is led out at least one point on one of the two end faces of the sealing strip
  • the holding portion has at least one recess through which the from the end face of the sealing strip led out led portion of the supply line through the sealing strip holder, wherein the at least one recess is formed such that the sealing strip entl together with the lead-out portion of the supply line relative to the sealing strip holder ang the path is movable.
  • the at least one recess is formed as a hole or as an upwardly open groove.
  • the sealing strip comprises a facing the inside of the roll shell top, which provides the sealing surface and the at least one lubricant outlet opening.
  • the at least one lubricant outlet opening is formed as a lubricant groove, in the form of a formed in the material of the sealing strip in its longitudinal direction in the longitudinal direction of the sealing strip extending groove-like depression in the material of the sealing strip.
  • the sealing strip is limited in its length by two ends, wherein the sealing strip in the region of its two ends in each case has a wall bounding the lubricant channel in its length.
  • the lubricant channel is completed on both sides in its length, this is formed like a trough, whereby a uniform over the length of the lubricant groove level of lubricant can be adjusted and the lubricant groove forms a kind of memory for the lubricant.
  • a substantially constant level of lubricant can be maintained.
  • the amount of lubricant required can be further reduced and the emergency running properties can be improved with short-term failure of the lubricant supply.
  • the lubricant groove extends substantially over most of the length of the sealing strip. In essence, this means that the lubricant channel extends over at least 60%, preferably at least 70%, of the length of the sealing strip. In this case, the lubricant channel can extend uninterrupted.
  • the two the lubricant channel in their length limiting walls have a strength - viewed in the longitudinal direction of the sealing strip - of a maximum of 20 cm, preferably a maximum of 10cm. In a conventional sealing strip, this may mean that the lubricant channel extends over several meters, whereas the two walls at the ends of the sealing strip each extend over a maximum of 20 cm, in particular a maximum of 10 cm.
  • a preferred embodiment of the invention provides that the supply line within the sealing strip along the longitudinal direction extending central supply channel and at least one, preferably a plurality of the lubricant channel and the central supply channel interconnecting riser (s) comprises via which the lubricant channel is fed by ending in the lubricant groove outlet openings of the respective riser with the lubricant.
  • the central supply channel through one or a few leads with the lubricant be fed.
  • the central supply channel then distributes the lubricant to several risers - where the number of risers is significantly greater than the number of leads. It is conceivable in this context that viewed in the longitudinal direction of the sealing strip about every 5 to 500mm an outlet opening is arranged.
  • a further advantageous embodiment of the invention provides that the central supply channel has a changing cross-sectional area and / or cross-sectional geometry along its longitudinal extent.
  • a central supply channel with varying cross-section produce by, for example, in the main body of the sealing strip first to one of the long sides of the body open towards groove, for example. U-shaped groove is introduced, the opening then partially with sealing strip material, for example Is closed by means of the width and length but not depth of the groove replicating profile body.
  • This profile body can then be attached, for example, by gluing to the base body and together with it form a channel which provides the central supply channel.
  • a preferred embodiment of the invention provides that the sealing surface and the lubricant channel are arranged on the top, as viewed in the intended direction of rotation of the roll shell, the lubricant groove the essential part of the sealing surface, in particular that the lubricant channel of Preceding sealing surface.
  • This ensures that the inside of the roll shell is wetted with the lubricant directly before it runs onto the sealing surface or at least the essential part of the sealing surface.
  • the roll shell runs on the front end face on the sealing strip, first passes over the lubricant channel and then the sealing surface and runs off at the rear end of the sealing strip.
  • the lubricant channel has a bottom forming the lowest point of the lubricant channel with a front side wall extending to the front end side and a rear side wall extending to the sealing surface.
  • the front side wall extends to the front end side and the rear side wall to the sealing surface.
  • the rear side wall occupies a horizontal angle of 1 ° -89, in particular an angle of 15 ° or more and 80 ° or less.
  • the rear end closer to the inside of the roll shell as the front end, in particular, the rear end extends to the inside of the Roll shell, whereas the front end side does not extend to the inside of the roll shell.
  • the lubricant is preferably substantially water.
  • the term "essentially” refers to the possible possibility of adding lubricant additives to the water, with water always being the main constituent (based on volume%) of such a mixture.
  • the front and the back of the sealing strip extend substantially parallel to each other.
  • FIG. 1 shows a sealing strip 1 of a sealing device according to the invention in plan view of the top 2 of the sealing strip 1, which faces the inside of a rotatable roll shell.
  • the top 2 of the sealing strip 1 provides a hatched drawn sealing surface 3 and an adjacent to the sealing surface 3 lubricant channel 4, wherein the lubricant channel is formed by at least one groove-like in the longitudinal direction L of the sealing strip 1 extending recess in the sealing strip and the sealing surface 3 and Opening the lubricant channel 4 to the inside of the roll shell point.
  • the longitudinal direction L of the sealing strip 1 and the longitudinal direction of the roller coincide and are designated individually and together with the reference symbol L.
  • the length of the sealing strip 1 is to be understood as the maximum extent in the longitudinal direction L.
  • ends in the lubricant channel 4 a plurality in the longitudinal direction of the lubricant channel 4 successively arranged openings 5 of a supply line 12 for supplying lubricant.
  • the sealing strip 1 is in its length by two ends 6.1 and 6.2 limited.
  • the sealing strip 1 has in the region of its two ends 6.1. and 6.2 each have a lubricant channel 4 in its length limiting wall 7.1 and 7.2.
  • the sealing strip 1 has a length of several meters and each of the two walls 7.1 and 7.2 has - viewed in the longitudinal direction L of the sealing strip 1 - a thickness of 20cm or less, especially 10cm or less.
  • FIG. 2 shows a roller 8 according to the invention in a sectional plane perpendicular to the longitudinal extent L of the roller 1.
  • a sealing device 9 with in the FIG. 1 shown sealing strip 1 installed as intended.
  • the FIG. 2 shows the sealing device 9 with the sealing strip 1 in the position in which the sealing surface 3 is employed to seal an overpressure or underpressure zone, not shown, against the inner side 11 of the roll shell 10.
  • the FIG. 3 shows a longitudinal end of the roll in plan view without representation of the roll shell, wherein within the roller 8 extending components are drawn with dashed lines.
  • the lubricant channel 4 is connected to a supply line 12 extending in sections within the sealing strip 1, which ends sealing rings on the openings 5 and by means of which lubricant 31, which is located in the lubricant channel 4 between the inner side 11 of the roll shell 10 and the sealing surface 3 can be brought.
  • the sealing surface 3 and the lubricant channel 4 are arranged on the top 2, that upon rotation of the roll shell 10 in the intended direction of rotation D, the lubricant channel is the essential part, in this case even upstream of the entire sealing surface 3.
  • the sealing strip 1 is limited in its width B by a front end face 24 and a substantially parallel rearward end face 15, between which the upper side 2 of the sealing strip 1 extends.
  • the front - and rear end face 24, 15 and the sealing surface 3 and the lubricant channel 4 are arranged such that upon rotation of the roll shell 10 in the space provided Viewed in direction of rotation D, the roll shell 10 runs in the region of the front end face 24 on the sealing strip 1 first the lubricant channel 4 and then the sealing surface 3 sweeps around in the region of the rear end face 15 of the sealing strip 1 runs.
  • the sealing strip holder 25 in the present case has a holding section with two guide surfaces 26, 27 on which the sealing strip with its two sides 15, 24 of front or rear end face displaceable in the radial direction R.
  • the roller 8 is slidably mounted along a path from and to the inner side 11 of the roll shell surface 10.
  • the sealing strip holder 25 also has a bottom 29 on which a bellows 30 which can be filled with a pressure medium such as, for example, air is supported and by means of which the sealing strip 1 can be moved in the direction R relative to the sealing strip holder 25.
  • the supply line 12 is led out of the sealing strip 1 at at least one point 28 on the rear end face 15.
  • the holding section has at least one hole-shaped recess 32, through which each of the rear end face 15 of the sealing strip 1 led out portion of the supply line 12 by the sealing strip holder 25 is guided therethrough.
  • the supply line 12 comprises a guided inside the sealing strip section and outside of the Sealing strip 1 guided section.
  • the guided within the sealing strip 1 section of the supply line 12 comprises a extending in the longitudinal direction L of the sealing strip 1 central supply channel 13 of the several in the longitudinal direction L of the sealing strip 1 successively arranged risers 14 go out, each end at an opening 5 in the lubricant channel 4. From the central supply channel 13 go one or more presently guided horizontally line sections, which is guided on the rear end face 15 of the sealing strip 1 from this or are. It is conceivable that the central supply channel 13 along its longitudinal extent L has a changing cross-sectional area and / or cross-sectional geometry.
  • the outside of the sealing strip 1 but within the roller 8 extending portion of the supply line 12 includes a first line section 21 and a second line section 22, as in the Figures 2 and 3 shown.
  • the first line section 21 is longer than the second line section 22 and the second line section 22 according to the invention is flexurally flexible in comparison to the first line section 21.
  • the second line section 22 is formed by a rubber hose with a reinforcement by a metal braid 22.
  • the second line section 22 begins within a range of a maximum of one meter calculated from the point 28 at which the supply line 12 is guided out of the sealing strip 1 and has a length of 20-100cm.
  • the first line section 21 terminates at its one longitudinal end at an example. Formed as a roller cover longitudinal side roller end 23 and at its other longitudinal end to a connecting piece 20th
  • the first and the second line sections 21, 22 together form a third line section 18.
  • the part of the supply line 12 running within the sealing strip 1 and a short line section extending between the central supply channel 13 and the point 28 form a fourth line section 17 fourth line section 17 is permanently connected to the sealing strip 1 and integral with the sealing strip.
  • the fourth line section 17 is here, since this is an integral part of the sealing strip 1, when removing and installing the sealing strip 1 with the sealing strip 1 off or installed.
  • the third and fourth line sections 18, 17 are detachably connected to one another via the connecting element 20.

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  • Rolls And Other Rotary Bodies (AREA)
  • Paper (AREA)
  • Actuator (AREA)

Description

Die Erfindung betrifft eine Walze mit einer Über- oder Unterdruckzone gemäß dem Oberbegriff des Patentanspruch 1.The invention relates to a roller with an overpressure or underpressure zone according to the preamble of claim 1.

Dichteinrichtungen in besaugten oder beblasenen Walzen für Papier-, Karton- oder Tissuemaschinen müssen die Über- oder Unterdruckzone zuverlässig gegen die Umgebung in der Normaldruck herrscht abdichten. Hierbei wird zur Abdichtung der Überdruck- oder Unterdruckzone die Dichtfläche jeder Dichtleiste der Dichteinrichtung gegen die Innenseite des rotierenden Walzenmantels angestellt. Um den Verschleiß der Dichtleiste hervorgerufen durch Reibung zwischen der Mantelfläche und der Dichtfläche zu reduzieren, wird versucht ein Schmiermittel zwischen die Dichtfläche und die Innenseite einzubringen. Dies wird gewöhnlich mit Spritzrohren gemacht, die in Drehrichtung der Walze vor der ersten Dichtleiste der Über- oder Unterdruckzone angeordnet sind. Hierbei wird das Schmiermittel auf die Innenseite des Walzenmantels aufgebracht von diesem durch dessen Rotation zu den einzelnen Dichtleisten befördert, wodurch in Drehrichtung betrachtet die Schmiermittelversorgung von Dichtleiste zu Dichtleiste abnimmt. Um die in Drehrichtung nachfolgenden Dichtleisten dennoch mit genügend Schmiermittel zu versorgen, muss eine große Menge an Schmiermittel verwendet werden, welches aber nur zum geringen Teil der eigentlichen Schmierung der Dichtleisten zu Gute kommt und sonst zur nicht gewünschten Rückbefeuchtung der Faserstoffbahn beiträgt.Zur Lösung dieses Problems ist aus der US 2 269 837 ist eine Dichtleiste mit integrierter Schmierung bekannt. Zudem schlägt eine in der DE 10 2011 004 055 veröffentlichte Erfindung der Anmelderin vor, das Schmiermittel direkt zu der die Dichtfläche bereitstellenden Oberseite der jeweiligen Dichtleiste zu leiten, um damit jede einzelne Dichtleiste gezielt mit der benötigten Menge an Schmiermittel zu versorgen. Eine bevorzugte Ausgestaltung dieser Erfindung schlägt hier ferner eine an der Oberseite der Walze bereitgestellte Schmiermittelrinne in Form einer neben der Dichtfläche angeordneten sich in Längsrichtung der Dichtleiste, d.h. in Maschinenquerrichtung der Walze, erstreckenden nutartigen Vertiefung vor.Sealing devices in suctioned or blown rolls for paper, board or tissue machines must reliably seal the overpressure or underpressure zone against the environment in which normal pressure prevails. Here, the sealing surface of each sealing strip of the sealing device is employed against the inside of the rotating roll shell to seal the overpressure or vacuum zone. In order to reduce the wear of the sealing strip caused by friction between the lateral surface and the sealing surface, it is attempted to introduce a lubricant between the sealing surface and the inside. This is usually done with spray tubes, which are arranged in the direction of rotation of the roller in front of the first sealing strip of the overpressure or underpressure zone. Here, the lubricant is applied to the inside of the roll shell of this transported by its rotation to the individual sealing strips, whereby viewed in the direction of rotation decreases the lubricant supply from sealing strip to sealing strip. In order to provide the next in the direction of rotation sealing strips with enough lubricant, a large amount of lubricant must be used, which but only a small part of the actual lubrication of the sealing strips to good and otherwise contributes to unwanted rewetting of the fibrous web.To solve this problem is from the US 2 269 837 is a sealing strip with integrated lubrication known. In addition, one in the DE 10 2011 004 055 Published Applicant's invention to direct the lubricant directly to the upper surface of the respective sealing strip which provides the sealing surface in order to supply each individual sealing strip in a targeted manner with the required amount of lubricant. A preferred embodiment of this invention further proposes here a lubricant channel provided on the upper side of the roller in the form of a side view the sealing surface arranged in the longitudinal direction of the sealing strip, ie in the cross machine direction of the roller, extending groove-like depression.

Da die Dichtleiste in radialer Richtung der Walze zur Innenseite des Walzenmantels hin und von dieser weg bewegbar sein muss, darf diese Bewegungsfreiheit der Dichtleiste nicht durch die Versorgungsleitung, mittels der das Schmiermittel zur Schmiermittelrinne transportiert wird, gestört werden.Since the sealing strip in the radial direction of the roller must be movable towards and away from the inside of the roll shell, this freedom of movement of the sealing strip must not be disturbed by the supply line, by means of which the lubricant is transported to the lubricant channel.

Es ist nun die Aufgabe der vorliegenden Erfindung eine Walze mit einer Dichtleiste mit integrierter Schmiermittelversorgung vorzuschlagen, welche in ihrer Bewegungsfreiheit nicht gegenüber einer Dichtleiste eingeschränkt ist, die keine integrierte Schmiermittelversorgung hat.It is now the object of the present invention to propose a roller with a sealing strip with integrated lubricant supply, which is not restricted in its freedom of movement with respect to a sealing strip which has no integrated lubricant supply.

Die Aufgabe wird gelöst durch eine Walze für eine Maschine zur Herstellung oder Verarbeitung einer Faserstoffbahn, wobei die Walze einen bewegbaren Walzenmantel und eine innerhalb des Walzenmantels angeordnete und im Vergleich zum Walzenmantel drehfeste Über- oder Unterdruckzone umfasst, welche gegenüber der Umgebung mittels einer zumindest eine Dichtleiste umfassenden Dichteinrichtung abgedichtet ist, wobei die Dichtleiste in ihrer Breite durch eine vordere- und eine hintere Stirnseite begrenzt ist und in radialer Richtung der Walze zur Innenseite des Walzenmantels hin und von dieser weg bewegbar ist, und wobei die Dichtleiste im Bereich ihrer zur Innenseite des bewegbaren Walzenmantels weisenden Dichtfläche zumindest eine an eine Versorgungsleitung angeschlossene Schmiermittelaustrittsöffnung umfasst, mittels welcher Schmiermittel zwischen die Innenseite des Walzenmantels und die Dichtfläche bringbar ist, wobei die Versorgungsleitung einen innerhalb der Dichtleiste verlaufenden Teil sowie einen außerhalb der Dichtleiste aber innerhalb der Walze verlaufenden Teil hat.The object is achieved by a roller for a machine for the production or processing of a fibrous web, wherein the roller comprises a movable roll shell and an inside or inside the roll shell and in comparison to the roll shell rotatable overpressure or underpressure zone, which with respect to the environment by means of at least one sealing strip sealed sealing means is comprehensive, wherein the sealing strip is limited in its width by a front and a rear end face and in the radial direction of the roller to the inside of the roll shell and away from this movable, and wherein the sealing strip in the region of the inside of the movable Rolling jacket facing sealing surface comprises at least one connected to a supply line lubricant outlet opening, by means of which lubricant between the inside of the roll shell and the sealing surface can be brought, wherein the supply line extending within the sealing strip n part and outside the sealing strip but within the roller extending part.

Die Erfindung ist dadurch gekennzeichnet, dass der innerhalb der Walze verlaufende Teil der Versorgungsleitung auf seiner außerhalb der Dichtleiste geführten Länge einen ersten und zweiten Leitungsabschnitt hat, wobei der erste Leitungsabschnitt länger ist als der zweite Leitungsabschnitt und der zweite Leitungsabschnitt im Vergleich zum ersten Leitungsabschnitt biegeflexibler ausgebildet ist.The invention is characterized in that the part of the supply line running inside the roller has on its length guided outside the sealing strip a first and second line section, wherein the first line section is longer than the second line section and the second line section in comparison to the first line section biegeflexibler is formed.

Durch den biegeflexiblen, kurzen zweiten Leitungsabschnitt wird in radialer Richtung der Walze eine freie Verschiebbarkeit der Dichtleiste relativ zur Innenseite des Walzenmantels hin oder von dieser weg gewährleistet. Der erste Leitungsabschnitt des innerhalb der Walze aber außerhalb der Dichtleiste verlaufenden Teils der Versorgungsleitung kann biegefest und damit stabil ausgeführt werden. Bei der Auslegung und Anordnung des biegeflexiblen zweiten Leitungsabschnitts ist insbesondere darauf zu achten, dass dieser so verläuft, dass dieser nicht bei der Bewegung der Dichtleiste an Bauteilen innerhalb der Walze scheuert.Due to the bend-flexible, short second line section, a free displaceability of the sealing strip relative to the inside of the roll shell is ensured in the radial direction of the roll. The first line section of the inside of the roller but outside the sealing strip extending part of the supply line can be made resistant to bending and therefore stable. In the design and arrangement of the bend flexible second line section is particularly important to ensure that it runs so that it does not scrub during movement of the sealing strip on components within the roller.

Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous embodiments and further developments of the invention are specified in the subclaims.

Der biegesteifere erste Leitungsabschnitt kann bspw. durch ein oder mehrere Stahlrohre ausgeführt sein. Der biegeflexiblere zweite Leitungsabschnitt kann bspw. durch einen oder mehrere Kunststoffschläuche, insbesondere Gummischläuche, ausgeführt sein, die bspw. mit einem Metallgewebe oder -geflecht verstärkt sein können.The more rigid first line section may, for example, be embodied by one or more steel tubes. The flexurally flexible second line section can be embodied, for example, by one or more plastic hoses, in particular rubber hoses, which, for example, can be reinforced with a metal mesh or mesh.

Denkbar ist insbesondere, dass der biegesteife erste Leitungsabschnitt an dem zumindest einen Walzenende beginnt und sich in der Walze in Richtung der Dichtleiste erstreckt. Denkbar ist ferner, dass der biegeflexible zweite Leitungsabschnitt maximal einen Meter beabstandet von der zumindest einen Stelle beginnt an der die Versorgungsleitung aus der Dichtleiste geführt ist. Denkbar ist, dass der biegeflexiblere zweite Leitungsabschnitt eine Länge von 15cm bis 200cm, insbesondere 20cm bis 150 cm hat.It is conceivable, in particular, for the bending-resistant first line section to begin at the at least one end of the roll and to extend in the direction of the sealing strip in the roll. It is also conceivable that the flexurally flexible second line section at a maximum distance of one meter from the at least one point begins at which the supply line is guided out of the sealing strip. It is conceivable that the flexurally flexible second line section has a length of 15cm to 200cm, especially 20cm to 150cm.

Denkbar ist, dass die Versorgungsleitung im Bereich zumindest eines längsseitigen Walzenendes der Walze aus der Walze geführt ist. Ferner ist denkbar, dass jedes der beiden Walzenenden einen Walzendeckel umfasst und die Versorgungsleitung an zumindest einem der Walzendeckel aus der Walze geführt wird.It is conceivable that the supply line is guided out of the roller in the region of at least one longitudinal roller end of the roller. Furthermore, it is conceivable that each of the two roller ends comprises a roller cover and the supply line is guided on at least one of the roller cover from the roller.

Vorzugsweise beginnt der biegeflexible zweite Leitungsabschnitt an der Stelle, an der die Versorgungsleitung aus der Dichtleiste geführt wird.Preferably, the bendable second line section begins at the point at which the supply line is guided out of the sealing strip.

Die Versorgungsleitung weist vorzugsweise einen mit der Dichtleiste integralen oder unlösbar verbundenen vierten Leitungsabschnitt -zum vierten Leitungsabschnitt kann bspw. der zentrale Versorgungskanal und die zumindest eine Steigleitung gehörensowie einen lösbar mit dem vierten Leitungsabschnitt verbundenen dritten Leitungsabschnitt auf, der außerhalb der Dichtleiste verläuft und vorzugsweise zu zumindest einem der beiden Walzenenden geführt ist. Hierdurch wird es ermöglicht, dass die Dichtleiste bspw. bei deren Austausch oder Wartung einfach an die Schmiermittelversorgung angeschlossen und von dieser wieder getrennt werden kann.The supply line preferably has a fourth line section which is integral or inseparably connected to the sealing strip. For example, the central supply channel and the at least one riser line and a third line section detachably connected to the fourth line section extend outside the sealing strip and preferably at least one of the two roll ends is guided. This makes it possible that the sealing strip, for example. In their replacement or maintenance easily connected to the lubricant supply and can be separated from this again.

Vorzugsweise ist hierbei im Bereich der zumindest einen Stelle an der die Verbindungsleitung aus der Dichtleiste herausgeführt wird, zumindest ein Verbindungselement, bspw. in Form einer mittels einem O-Ring abgedichteten Hülse, vorgesehen, mittels dem der dritte mit den vierten Leitungsabschnitt lösbar miteinander verbunden sind, d.h. gemäß dieser Ausführungsform erstreckt sich der vierte Leitungsabschnitt im Wesentlichen innerhalb der Dichtleiste und endet an dem Verbindungselement. Der dritte Leitungsabschnitt ist dann außerhalb der Dichtleiste geführt und ist mit dem vierten Leitungsabschnitt lösbar über das zumindest eine Verbindungselement verbunden. Es ist durchaus möglich, dass der vierte Leitungsabschnitt innerhalb der Dichtleiste derart verzweigt verläuft, dass dieser an mehreren bspw. in Längsrichtung der Dichtleiste nebeneinander angeordneten Stellen aus der Dichtleiste geführt ist. In diesem Fall ist dann vorzugsweise im Bereich jeder Stelle an der ein Ast des vierten Leitungsabschnitts aus der Dichtleiste geführt ist ein Verbindungselement angeordnet mittels dem der jeweilige Ast mit dem dritten Leitungsabschnitt verbunden ist.Preferably, in the region of the at least one point at which the connecting line is led out of the sealing strip, at least one connecting element, for example in the form of a sleeve sealed by means of an O-ring, is provided by means of which the third and fourth line sections are detachably connected to one another that is, according to this embodiment, the fourth conduit section extends substantially within the sealing strip and terminates at the connecting element. The third line section is then guided outside the sealing strip and is detachably connected to the fourth line section via the at least one connecting element. It is quite possible that the fourth line section extends in such a branched manner within the sealing strip that it is guided out of the sealing strip at several points, for example, in the longitudinal direction of the sealing strip. In this case, a connecting element is then preferably arranged in the region of each point on which a branch of the fourth line section is guided out of the sealing strip by means of which the respective branch is connected to the third line section.

Vorzugsweise setzt sich der dritte Leitungsabschnitt aus dem ersten und zweiten Leitungsabschnitt zusammen.Preferably, the third line section is composed of the first and second line sections.

Eine weitere bevorzugte Ausgestaltung der Erfindung sieht vor, dass die Dichteinrichtung einen Dichtleistenhalter zur Halterung der Dichtleiste umfasst, wobei der Dichtleistenhalter einen Halteabschnitt mit zumindest einer Führungsfläche hat, entlang der die Dichtleiste mit zumindest einer der beiden Seiten von vorderer- und hinterer Stirnseite in radialer Richtung der Walze betrachtet von und zur Innenseite der Walzenmantelfläche hin und weg verschiebbar gelagert ist, wobei die Versorgungsleitung an zumindest einer Stelle an einer der beiden Stirnseiten aus der Dichtleiste herausgeführt ist und wobei der Halteabschnitt zumindest eine Aussparung hat, durch welche der aus der Stirnseite der Dichtleiste herausgeführte Abschnitt der Versorgungsleitung durch den Dichtleistenhalter hindurch geführt wird, wobei die zumindest eine Aussparung derart ausgebildet ist, dass die Dichtleiste zusammen mit dem herausgeführten Abschnitt der Versorgungsleitung relativ zum Dichtleistenhalter entlang der Wegstrecke bewegbar ist.A further preferred embodiment of the invention provides that the sealing device comprises a sealing strip holder for holding the sealing strip, wherein the sealing strip holder has a holding portion with at least one guide surface along which the sealing strip with at least one of the two sides of the front and rear end side in the radial direction the roller viewed from and to the inside of the roll shell surface and is slidably mounted, wherein the supply line is led out at least one point on one of the two end faces of the sealing strip and wherein the holding portion has at least one recess through which the from the end face of the sealing strip led out led portion of the supply line through the sealing strip holder, wherein the at least one recess is formed such that the sealing strip entl together with the lead-out portion of the supply line relative to the sealing strip holder ang the path is movable.

Denkbar ist, dass die zumindest eine Aussparung lochförmig oder als nach oben offene Nut ausgebildet ist.It is conceivable that the at least one recess is formed as a hole or as an upwardly open groove.

Vorzugsweise umfasst die Dichtleiste eine zur Innenseite des Walzenmantels weisende Oberseite, welche die Dichtfläche und die zumindest eine Schmiermittelaustrittsöffnung bereitstellt. Hierbei ist es denkbar, dass die zumindest eine Schmiermittelaustrittsöffnung als Schmiermittelrinne ausgebildet ist, in Form einer im Material der Dichtleiste gebildeten sich in ihrer Längsrichtung in Längsrichtung der Dichtleiste erstreckenden nutartigen Vertiefung im Material der Dichtleiste. Denkbar ist in diesem Zusammenhang ferner, dass die Dichtleiste in ihrer Länge durch zwei Enden begrenzt wird, wobei die Dichtleiste im Bereich ihrer beiden Enden jeweils eine die Schmiermittelrinne in seiner Länge begrenzende Wandung aufweist.Preferably, the sealing strip comprises a facing the inside of the roll shell top, which provides the sealing surface and the at least one lubricant outlet opening. It is conceivable that the at least one lubricant outlet opening is formed as a lubricant groove, in the form of a formed in the material of the sealing strip in its longitudinal direction in the longitudinal direction of the sealing strip extending groove-like depression in the material of the sealing strip. It is also conceivable in this connection that the sealing strip is limited in its length by two ends, wherein the sealing strip in the region of its two ends in each case has a wall bounding the lubricant channel in its length.

Dadurch, dass die Schmiermittelrinne in ihrer Länge beidseitig abgeschlossen ist, ist diese wannenartig ausgebildet, wodurch sich ein über die Länge der Schmiermittelrinne gleichmäßiger Pegel an Schmiermittel einstellen kann und die Schmiermittelrinne eine Art Speicher für das Schmiermittel bildet. Hierdurch kann auch bei variierender Abgabe von Schmiermittel durch die Versorgungsleitung ein im Wesentlichen konstanter Schmiermittelpegel gehalten werden kann. Hierdurch kann die Menge an benötigtem Schmiermittel weiter reduziert und die Notlaufeigenschaften bei kurzfristigem Ausfall der Schmiermittelversorgung verbessert werden.Characterized in that the lubricant channel is completed on both sides in its length, this is formed like a trough, whereby a uniform over the length of the lubricant groove level of lubricant can be adjusted and the lubricant groove forms a kind of memory for the lubricant. As a result, even with varying delivery of lubricant through the supply line, a substantially constant level of lubricant can be maintained. As a result, the amount of lubricant required can be further reduced and the emergency running properties can be improved with short-term failure of the lubricant supply.

Vorzugsweise erstreckt sich die Schmiermittelrinne im Wesentlichen über den größten Teil der Länge der Dichtleiste. Im Wesentlichen soll hierbei bedeuten, dass sich die Schmiermittelrinne über zumindest 60%, bevorzugt zumindest 70%, der Länge der Dichtleiste erstreckt. Hierbei kann sich die Schmiermittelrinne ununterbrochen erstrecken. Vorzugsweise haben die beiden die Schmiermittelrinne in ihrer Länge begrenzenden Wandungen eine Stärke - in Längsrichtung der Dichtleiste betrachtet- von maximal 20 cm, bevorzugt maximal 10cm. Bei einer üblichen Dichtleiste kann dies bedeuten, dass sich die Schmiermittelrinne über mehrere Meter erstreckt, wohingegen sich die beiden Wandungen an den Enden der Dichtleiste jeweils über maximal 20 cm, insbesondere maximal 10 cm erstrecken.Preferably, the lubricant groove extends substantially over most of the length of the sealing strip. In essence, this means that the lubricant channel extends over at least 60%, preferably at least 70%, of the length of the sealing strip. In this case, the lubricant channel can extend uninterrupted. Preferably, the two the lubricant channel in their length limiting walls have a strength - viewed in the longitudinal direction of the sealing strip - of a maximum of 20 cm, preferably a maximum of 10cm. In a conventional sealing strip, this may mean that the lubricant channel extends over several meters, whereas the two walls at the ends of the sealing strip each extend over a maximum of 20 cm, in particular a maximum of 10 cm.

Um den Aufbau der Dichteinrichtung hinsichtlich dem Anschluss der Versorgungsleitung an die Dichtleiste einfach zu gestalten und dennoch eine gleichmäßige Ausbringung des Schmiermittels über die Länge der Dichtleiste zu gewährleisten, sieht eine bevorzugte Ausgestaltung der Erfindung vor, dass die Versorgungsleitung einen sich innerhalb der Dichtleiste entlang deren Längsrichtung erstreckenden zentralen Versorgungskanal sowie zumindest eine, vorzugsweise mehrere die Schmiermittelrinne und den zentralen Versorgungskanal miteinander verbindende Steigleitung(en) umfasst über welche die Schmiermittelrinne durch in der Schmiermittelrinne endende Austrittsöffnungen der jeweiligen Steigleitung mit dem Schmiermittel gespeist wird. Gemäß dieser Ausgestaltung kann der zentrale Versorgungskanal durch eine oder wenige Zuleitungen mit dem Schmiermittel gespeist werden. Der zentrale Versorgungskanal verteilt dann das Schmiermittel an mehrere Steigleitungen -wobei die Anzahl der Steigleitungen deutlich größer als die Anzahl der Zuleitungen ist. Denkbar sind in diesem Zusammenhang, dass in Längsrichtung der Dichtleiste betrachtet etwa alle 5 bis 500mm eine Austrittsöffnung angeordnet ist.In order to make the construction of the sealing device with respect to the connection of the supply line to the sealing strip simple and yet to ensure a uniform application of the lubricant over the length of the sealing strip, a preferred embodiment of the invention provides that the supply line within the sealing strip along the longitudinal direction extending central supply channel and at least one, preferably a plurality of the lubricant channel and the central supply channel interconnecting riser (s) comprises via which the lubricant channel is fed by ending in the lubricant groove outlet openings of the respective riser with the lubricant. According to this embodiment, the central supply channel through one or a few leads with the lubricant be fed. The central supply channel then distributes the lubricant to several risers - where the number of risers is significantly greater than the number of leads. It is conceivable in this context that viewed in the longitudinal direction of the sealing strip about every 5 to 500mm an outlet opening is arranged.

Um die Ausbringung der Menge an Schmiermittel weiter besser vergleichmäßigen zu können und hierbei eine konstruktiv und fertigungstechnische Lösung bereitzustellen sieht eine weitere vorteilhafte Ausgestaltung der Erfindung vor, dass der zentrale Versorgungskanal entlang seiner Längserstreckung eine sich ändernde Querschnittsfläche und/oder Querschnittsgeometrie hat. Besonders einfach lässt sich ein solcher zentraler Versorgungskanal mit variierendem Querschnitt herstellen, indem bspw. in den Grundkörper der Dichtleiste zuerst eine zu einer der langen Seiten des Grundkörpers hin offene Nut, bspw. U-förmige Nut eingebracht wird, deren Öffnung dann mit Dichtleistenmaterial teilweise bspw. mittels eines die Breite und Länge aber nicht Tiefe der Nut nachbildenden Profilkörpers verschlossen wird. Dieser Profilkörper kann dann bspw. durch Verklebung an dem Grundkörper befestigt werden und zusammen mit diesem einen Kanal ausbilden, welcher den zentralen Versorgungskanal bereitstellt.In order to be able to even better even out the application of the amount of lubricant and thereby to provide a constructive and production-technical solution, a further advantageous embodiment of the invention provides that the central supply channel has a changing cross-sectional area and / or cross-sectional geometry along its longitudinal extent. Particularly simple can be such a central supply channel with varying cross-section produce by, for example, in the main body of the sealing strip first to one of the long sides of the body open towards groove, for example. U-shaped groove is introduced, the opening then partially with sealing strip material, for example Is closed by means of the width and length but not depth of the groove replicating profile body. This profile body can then be attached, for example, by gluing to the base body and together with it form a channel which provides the central supply channel.

Um eine effektive Schmierwirkung zu erzielen, sieht eine bevorzugte Ausgestaltung der Erfindung vor, dass die Dichtfläche und die Schmiermittelrinne derart an der Oberseite angeordnet sind, dass in der vorgesehenen Drehrichtung des Walzenmantels betrachtet, die Schmiermittelrinne dem wesentlichen Teil der Dichtfläche, insbesondere dass die Schmiermittelrinne der Dichtfläche vorgelagert ist. Hierdurch wird erreicht, dass die Innenseite des Walzenmantels direkt bevor diese auf die Dichtfläche oder zumindest den wesentlichen Teil der Dichtfläche aufläuft, mit dem Schmiermittel benetzt wird. Konkret kann vorgesehen sein, in der Drehrichtung des Walzenmantels betrachtet, der Walzenmantel an der vorderen Stirnseite auf die Dichtleiste aufläuft, zuerst die Schmiermittelrinne und anschließend die Dichtfläche überstreicht und an der hinteren Stirnseite von der Dichtleiste abläuft.In order to achieve an effective lubricating effect, a preferred embodiment of the invention provides that the sealing surface and the lubricant channel are arranged on the top, as viewed in the intended direction of rotation of the roll shell, the lubricant groove the essential part of the sealing surface, in particular that the lubricant channel of Preceding sealing surface. This ensures that the inside of the roll shell is wetted with the lubricant directly before it runs onto the sealing surface or at least the essential part of the sealing surface. Specifically, it can be provided, viewed in the direction of rotation of the roll shell, the roll shell runs on the front end face on the sealing strip, first passes over the lubricant channel and then the sealing surface and runs off at the rear end of the sealing strip.

In einer Schnittebene senkrecht zur Längserstreckung der Dichtleiste betrachtet weist die Schmiermittelrinne einen die tiefste Stelle der Schmiermittelrinne bildenden Boden mit einer sich zur vorderen Stirnseite erstreckenden vorderen Seitenwandung und einer sich zur Dichtfläche erstreckenden hinteren Seitenwandung auf. Hierbei erstreckt sich die vordere Seitenwandung bis zur vorderen Stirnseite und die hintere Seitenwandung bis zur Dichtfläche. Vorzugsweise ist vorgesehen, dass die hintere Seitenwandung mit einer Horizontalen einen Winkel von 1 °-89, insbesondere einen Winkel von 15° oder mehr und 80° oder weniger einnimmt.Viewed in a sectional plane perpendicular to the longitudinal extent of the sealing strip, the lubricant channel has a bottom forming the lowest point of the lubricant channel with a front side wall extending to the front end side and a rear side wall extending to the sealing surface. In this case, the front side wall extends to the front end side and the rear side wall to the sealing surface. Preferably, it is provided that the rear side wall occupies a horizontal angle of 1 ° -89, in particular an angle of 15 ° or more and 80 ° or less.

Hierdurch zwischen der Oberseite der Dichtleiste und der Innenseite des Walzenmantels ein keilförmiger Spalt gebildet, welcher an der vorderen Stirnseite am größten ist und sich zur Dichtfläche hin verjüngt. Hierdurch wird durch die mit dem drehenden Walzenmantel mitgerissene Luft eine Sogwirkung erzielt, welche das Schmiermittel mit in den Spalt zwischen Innenseite des Walzenmantels und Dichtfläche hineinzieht.In this way, a wedge-shaped gap is formed between the top of the sealing strip and the inside of the roll shell, which is greatest at the front end and tapers towards the sealing surface. As a result, a suction effect is achieved by the entrained with the rotating roll shell air, which draws the lubricant with in the gap between the inside of the roll shell and sealing surface.

Nach einer konkreten Ausgestaltung der Erfindung erstreckt sich bei bestimmungsgemäßem Einbau und Betrieb der Dichteinrichtung in der Walze in radialer Richtung der Walze betrachtet, die hintere Stirnseite dann näher zur Innenseite des Walzenmantels als die vordere Stirnseite, insbesondere, erstreckt sich die hintere Stirnseite bis zur Innenseite des Walzenmantels, wohingegen sich die vordere Stirnseite nicht bis zur Innenseite des Walzenmantels erstreckt.According to a specific embodiment of the invention extends in accordance with the installation and operation of the sealing device in the roll in the radial direction of the roller considered, the rear end closer to the inside of the roll shell as the front end, in particular, the rear end extends to the inside of the Roll shell, whereas the front end side does not extend to the inside of the roll shell.

Bei dem Schmiermittel handelt es sich vorzugsweise um im Wesentlichen Wasser. Der Begriff "im Wesentlichen" bezieht sich hierbei auf die eventuelle Möglichkeit der Zugabe von Schmierstoff-Additiven zum Wasser, wobei Wasser immer den Hauptbestandteil (bezogen auf Volumen-%) einer solchen Mischung darstellt.The lubricant is preferably substantially water. The term "essentially" refers to the possible possibility of adding lubricant additives to the water, with water always being the main constituent (based on volume%) of such a mixture.

Nach einer möglichen Ausgestaltung der Erfindung erstrecken sich die Vorder- und die Rückseite der Dichtleiste im Wesentlichen parallel zueinander.According to a possible embodiment of the invention, the front and the back of the sealing strip extend substantially parallel to each other.

Die Erfindung wird nachfolgend anhand von schematischen nicht maßstabsgetreuen Zeichnungen weiter erläutert. Es zeigen

Figur 1
eine Dichtleiste einer erfindungsgemäßen Dichteinrichtung in Draufsicht,
Figur 2
eine erfindungsgemäße Walze in einer Schnittebene senkrecht zur Längserstreckung der Walze mit der Dichtleiste aus Figur 1 und
Figur 3
einen Ausschnitt der Walze der Figur 2 im Bereich eines ihrer längsseitigen Enden in Draufsicht.
The invention will be further elucidated on the basis of schematic drawings which are not true to scale. Show it
FIG. 1
a sealing strip of a sealing device according to the invention in plan view,
FIG. 2
a roller according to the invention in a sectional plane perpendicular to the longitudinal extent of the roller with the sealing strip FIG. 1 and
FIG. 3
a section of the roller of the FIG. 2 in the region of one of its longitudinal ends in plan view.

Die Figur 1 zeigt eine Dichtleiste 1 einer erfindungsgemäßen Dichteinrichtung in Draufsicht auf die Oberseite 2 der Dichtleiste 1, welche zur Innenseite eines rotierbaren Walzenmantels zeigt.The FIG. 1 shows a sealing strip 1 of a sealing device according to the invention in plan view of the top 2 of the sealing strip 1, which faces the inside of a rotatable roll shell.

Die Oberseite 2 der Dichtleiste 1 stellt eine schraffiert gezeichnete Dichtfläche 3 und eine an die Dichtfläche 3 angrenzende Schmiermittelrinne 4 bereit, wobei die Schmiermittelrinne durch zumindest eine nutartige sich in Längsrichtung L der Dichtleiste 1 erstreckende Vertiefung in der Dichtleiste gebildet ist und die Dichtfläche 3 und die Öffnung der Schmiermittelrinne 4 zur Innenseite des Walzenmantels weisen. Anzumerken ist an dieser Stelle, dass die Längsrichtung L der Dichtleiste 1 und die Längsrichtung der Walze zusammenfallen und jeweils für sich sowie gemeinsam mit dem Bezugszeichen L bezeichnet sind. Unter der Länge der Dichtleiste 1 ist deren maximale Erstreckung in Längsrichtung L zu verstehen.The top 2 of the sealing strip 1 provides a hatched drawn sealing surface 3 and an adjacent to the sealing surface 3 lubricant channel 4, wherein the lubricant channel is formed by at least one groove-like in the longitudinal direction L of the sealing strip 1 extending recess in the sealing strip and the sealing surface 3 and Opening the lubricant channel 4 to the inside of the roll shell point. It should be noted at this point that the longitudinal direction L of the sealing strip 1 and the longitudinal direction of the roller coincide and are designated individually and together with the reference symbol L. The length of the sealing strip 1 is to be understood as the maximum extent in the longitudinal direction L.

Wie aus der Darstellung der Figur 1 zu entnehmen ist, enden in der Schmiermittelrinne 4 eine Vielzahl in Längsrichtung der Schmiermittelrinne 4 hintereinander angeordnete Öffnungen 5 einer Versorgungsleitung 12 zur Schmiermittelversorgung. Die Dichtleiste 1 ist in ihrer Länge durch zwei Enden 6.1 und 6.2 begrenzt. Die Dichtleiste 1 weist im Bereich ihrer beiden Enden 6.1. und 6.2 jeweils eine die Schmiermittelrinne 4 in ihrer Länge begrenzende Wandung 7.1 und 7.2 auf. Die Dichtleiste 1 hat eine Länge von mehreren Metern und jede der beiden Wandungen 7.1 und 7.2 hat - in Längsrichtung L der Dichtleiste 1 betrachtet- eine Stärke von 20cm oder weniger, insbesondere 10cm oder weniger.As from the representation of FIG. 1 can be seen, ends in the lubricant channel 4 a plurality in the longitudinal direction of the lubricant channel 4 successively arranged openings 5 of a supply line 12 for supplying lubricant. The sealing strip 1 is in its length by two ends 6.1 and 6.2 limited. The sealing strip 1 has in the region of its two ends 6.1. and 6.2 each have a lubricant channel 4 in its length limiting wall 7.1 and 7.2. The sealing strip 1 has a length of several meters and each of the two walls 7.1 and 7.2 has - viewed in the longitudinal direction L of the sealing strip 1 - a thickness of 20cm or less, especially 10cm or less.

Die Figur 2 zeigt eine erfindungsgemäße Walze 8 in einer Schnittebene senkrecht zur Längserstreckung L der Walze 1. In die Walze 8 ist eine Dichteinrichtung 9 mit der in der Figur 1 gezeigten Dichtleiste 1 bestimmungsgemäß eingebaut. Die Figur 2 zeigt die Dichteinrichtung 9 mit der Dichtleiste 1 in der Position in welcher deren Dichtfläche 3 zur Abdichtung einer nicht gezeigten Über- oder Unterdruckzone gegen die Innenseite 11 des Walzenmantels 10 angestellt ist. Die Figur 3 zeigt ein längsseitiges Walzenende in Draufsicht ohne Darstellung des Walzenmantels, wobei innerhalb der Walze 8 verlaufende Bauteile mit gestrichelten Linien gezeichnet sind.The FIG. 2 shows a roller 8 according to the invention in a sectional plane perpendicular to the longitudinal extent L of the roller 1. In the roller 8 is a sealing device 9 with in the FIG. 1 shown sealing strip 1 installed as intended. The FIG. 2 shows the sealing device 9 with the sealing strip 1 in the position in which the sealing surface 3 is employed to seal an overpressure or underpressure zone, not shown, against the inner side 11 of the roll shell 10. The FIG. 3 shows a longitudinal end of the roll in plan view without representation of the roll shell, wherein within the roller 8 extending components are drawn with dashed lines.

Die Schmiermittelrinne 4 ist an eine abschnittweise innerhalb der Dichtleiste 1 verlaufenden Versorgungsleitung 12 angeschlossen, welche dichtleistenseitig an den Öffnungen 5 endet und mittels welcher Schmiermittel 31, welches sich in der Schmiermittelrinne 4 befindet zwischen die Innenseite 11 des Walzenmantels 10 und die Dichtfläche 3 bringbar ist.The lubricant channel 4 is connected to a supply line 12 extending in sections within the sealing strip 1, which ends sealing rings on the openings 5 and by means of which lubricant 31, which is located in the lubricant channel 4 between the inner side 11 of the roll shell 10 and the sealing surface 3 can be brought.

Wie aus der Darstellung der Figur 2 zu entnehmen ist, sind die Dichtfläche 3 und die Schmiermittelrinne 4 derart an der Oberseite 2 angeordnet, dass bei Drehung des Walzenmantels 10 in der vorgesehenen Drehrichtung D, die Schmiermittelrinne dem wesentlichen Teil, vorliegend sogar der gesamten Dichtfläche 3 vorgelagert ist.As from the representation of FIG. 2 can be seen, the sealing surface 3 and the lubricant channel 4 are arranged on the top 2, that upon rotation of the roll shell 10 in the intended direction of rotation D, the lubricant channel is the essential part, in this case even upstream of the entire sealing surface 3.

Die Dichtleiste 1 ist in deren Breite B durch eine vordere Stirnseite 24 und eine dazu im Wesentlichen parallel verlaufende hintere Stirnseite 15 begrenzt, zwischen denen sich die Oberseite 2 der Dichtleiste 1 erstreckt. Hierbei sind die vordere - und hintere Stirnseite 24, 15 sowie die Dichtfläche 3 und die Schmiermittelrinne 4 derart angeordnet, dass bei Drehung des Walzenmantels 10 in der vorgesehenen Drehrichtung D betrachtet, der Walzenmantel 10 im Bereich der vorderen Stirnseite 24 auf die Dichtleiste 1 aufläuft zuerst den Schmiermittelrinne 4 und anschließend die Dichtfläche 3 überstreicht um im Bereich der hinteren Stirnseite 15 von der Dichtleiste 1 abläuft.The sealing strip 1 is limited in its width B by a front end face 24 and a substantially parallel rearward end face 15, between which the upper side 2 of the sealing strip 1 extends. Here, the front - and rear end face 24, 15 and the sealing surface 3 and the lubricant channel 4 are arranged such that upon rotation of the roll shell 10 in the space provided Viewed in direction of rotation D, the roll shell 10 runs in the region of the front end face 24 on the sealing strip 1 first the lubricant channel 4 and then the sealing surface 3 sweeps around in the region of the rear end face 15 of the sealing strip 1 runs.

Ferner erkennt man, dass sich die hintere Stirnseite 15 in radialer Richtung R der Walze 8 betrachtet, näher zur Innenseite 11 des Walzenmantels 10 erstreckt als die vordere Stirnseite 24, wodurch im Bereich der vorderen Stirnseite 24 ein Einlaufspalt zwischen der Oberseite 2 der Dichtleiste 1 und der Innenseite 11 des Walzenmantels 10 gebildet wird.Furthermore, it can be seen that the rear end face 15 viewed in the radial direction R of the roller 8, closer to the inner side 11 of the roll shell 10 extends as the front end face 24, whereby in the region of the front end face 24 an inlet gap between the top 2 of the sealing strip 1 and the inside 11 of the roll shell 10 is formed.

Die Dichteinrichtung 9 umfasst ferner einen Dichtleistenhalter 25 zur Halterung der Dichtleiste 1. Hierbei hat der Dichtleistenhalter 25 vorliegend einen Halteabschnitt mit zwei Führungsflächen 26, 27 an denen die Dichtleiste mit ihren beiden Seiten 15, 24 von vorderer- oder hinterer Stirnseite verschiebbar in radialer Richtung R der Walze 8 entlang einer Wegstrecke von und zur Innenseite 11 der Walzenmantelfläche 10 verschiebbar gelagert ist. Der Dichtleistenhalter 25 hat ferner einen Boden 29 an dem sich ein mit einem Druckmedium wie bspw. Luft befüllbarer Balg 30 abstützt und mittels dem die Dichtleiste 1 relativ zum Dichtleistenhalter 25 in Richtung R bewegbar ist.In this case, the sealing strip holder 25 in the present case has a holding section with two guide surfaces 26, 27 on which the sealing strip with its two sides 15, 24 of front or rear end face displaceable in the radial direction R. the roller 8 is slidably mounted along a path from and to the inner side 11 of the roll shell surface 10. The sealing strip holder 25 also has a bottom 29 on which a bellows 30 which can be filled with a pressure medium such as, for example, air is supported and by means of which the sealing strip 1 can be moved in the direction R relative to the sealing strip holder 25.

Man erkennt ferner, dass die Versorgungsleitung 12 an zumindest einer Stelle 28 an der hinteren Stirnseite 15 aus der Dichtleiste 1 herausgeführt ist. Um eine freie Verschiebbarkeit der Dichtleiste 1 relativ zum Dichtleistenhalter 25 in radialer Richtung R der Walze 8 betrachtet zu gewährleisten, hat der Halteabschnitt zumindest eine lochförmig ausgebildete Aussparung 32, durch welche der jeweils aus der hinteren Stirnseite 15 der Dichtleiste 1 herausgeführte Abschnitt der Versorgungsleitung 12 durch den Dichtleistenhalter 25 hindurch geführt wird.It can also be seen that the supply line 12 is led out of the sealing strip 1 at at least one point 28 on the rear end face 15. In order to ensure a free displacement of the sealing strip 1 relative to the sealing strip holder 25 in the radial direction R of the roller 8, the holding section has at least one hole-shaped recess 32, through which each of the rear end face 15 of the sealing strip 1 led out portion of the supply line 12 by the sealing strip holder 25 is guided therethrough.

Wie aus der Darstellung der Figur 2 zu erkennen ist, umfasst die Versorgungsleitung 12 einen innerhalb der Dichtleiste geführten Abschnitt sowie einen außerhalb der der Dichtleiste 1 geführten Abschnitt. Der innerhalb der Dichtleiste 1 geführte Abschnitt der Versorgungsleitung 12 umfasst einen sich in Längsrichtung L der Dichtleiste 1 erstreckende zentralen Versorgungskanal 13 von dem mehrere in Längsrichtung L der Dichtleiste 1 hintereinander angeordnete Steigleitungen 14 ausgehen, die jeweils an einer Öffnung 5 in der Schmiermittelrinne 4 enden. Von dem zentralen Versorgungskanal 13 gehen eine oder mehrere vorliegend waagerecht geführte Leitungsabschnitte weg, die an der hinteren Stirnseite 15 der Dichtleiste 1 aus dieser geführt ist bzw. sind. Denkbar ist, dass der zentrale Versorgungskanal 13 entlang seiner Längserstreckung L eine sich ändernde Querschnittsfläche und/oder Querschnittsgeometrie hat.As from the representation of FIG. 2 can be seen, the supply line 12 comprises a guided inside the sealing strip section and outside of the Sealing strip 1 guided section. The guided within the sealing strip 1 section of the supply line 12 comprises a extending in the longitudinal direction L of the sealing strip 1 central supply channel 13 of the several in the longitudinal direction L of the sealing strip 1 successively arranged risers 14 go out, each end at an opening 5 in the lubricant channel 4. From the central supply channel 13 go one or more presently guided horizontally line sections, which is guided on the rear end face 15 of the sealing strip 1 from this or are. It is conceivable that the central supply channel 13 along its longitudinal extent L has a changing cross-sectional area and / or cross-sectional geometry.

Der außerhalb der Dichtleiste 1 aber innerhalb der Walze 8 verlaufende Abschnitt der Versorgungsleitung 12 umfasst einen ersten Leitungsabschnitt 21 und einen zweiten Leitungsabschnitt 22, wie in den Figuren 2 und 3 gezeigt. Hierbei ist der erste Leitungsabschnitt 21 länger als der zweite Leitungsabschnitt 22 und der zweite Leitungsabschnitt 22 ist erfindungsgemäß im Vergleich zum ersten Leitungsabschnitt 21 biegeflexibel ausgebildet. Vorliegend wird der zweite Leitungsabschnitt 22 durch einen Gummischlauch mit einer Verstärkung durch ein Metallgeflecht 22 gebildet. Ferner beginnt der zweite Leitungsabschnitt 22 in einem Bereich von maximal einen Meter gerechnet von der Stelle 28, an der die Versorgungsleitung 12 aus der Dichtleiste 1 geführt ist und hat eine Länge von 20-100cm. Der erste Leitungsabschnitt 21 endet an seinem einen längsseitigen Ende an einem bspw. als Walzendeckel ausgebildeten längsseitigen Walzenende 23 und an seinem anderen längsseitigen Ende an einem Verbindungsstück 20.The outside of the sealing strip 1 but within the roller 8 extending portion of the supply line 12 includes a first line section 21 and a second line section 22, as in the Figures 2 and 3 shown. In this case, the first line section 21 is longer than the second line section 22 and the second line section 22 according to the invention is flexurally flexible in comparison to the first line section 21. In the present case, the second line section 22 is formed by a rubber hose with a reinforcement by a metal braid 22. Furthermore, the second line section 22 begins within a range of a maximum of one meter calculated from the point 28 at which the supply line 12 is guided out of the sealing strip 1 and has a length of 20-100cm. The first line section 21 terminates at its one longitudinal end at an example. Formed as a roller cover longitudinal side roller end 23 and at its other longitudinal end to a connecting piece 20th

Der erste und der zweite Leitungsabschnitt 21, 22 bilden zusammen einen dritten Leitungsabschnitt 18. Der innerhalb der Dichtleiste 1 verlaufende Teil der Versorgungsleitung 12 sowie ein kurzes Leitungsstück, das zwischen dem zentralen Versorgungskanal 13 und der Stelle 28 verläuft, bilden einen vierten Leitungsabschnitt 17. Der vierte Leitungsabschnitt 17 ist unlösbar mit der Dichtleiste 1 verbunden und integraler Bestandteil mit der Dichtleiste. Der vierte Leitungsabschnitt 17 wird hierbei, da dieser fester Bestandteil der Dichtleiste 1 ist, beim Aus- und Einbau der Dichtleiste 1 mit der Dichtleiste 1 aus- bzw. eingebaut. Der dritte und der vierte Leitungsabschnitt 18, 17 sind über das Verbindungselement 20 lösbar miteinander verbunden.The first and the second line sections 21, 22 together form a third line section 18. The part of the supply line 12 running within the sealing strip 1 and a short line section extending between the central supply channel 13 and the point 28 form a fourth line section 17 fourth line section 17 is permanently connected to the sealing strip 1 and integral with the sealing strip. The fourth line section 17 is here, since this is an integral part of the sealing strip 1, when removing and installing the sealing strip 1 with the sealing strip 1 off or installed. The third and fourth line sections 18, 17 are detachably connected to one another via the connecting element 20.

Claims (15)

  1. Roller (8) for a machine for manufacturing or processing a fibrous web, wherein the roller (8) comprises a movable roller sleeve (10) and a positive-pressure or negative-pressure zone which is disposed within the roller sleeve (10) and is rotationally fixed in comparison with the roller sleeve (10) and which is sealed in relation to the environment by means of a sealing installation (9) which comprises at least one sealing strip (1), wherein the sealing strip (1) in its width is delimited by one front and one rear end side (24, 15) and in the radial direction of the roller (8) is movable from the roller (8) toward the inner side (11) of the roller sleeve (10) and away therefrom, and wherein the sealing strip (1), in the region of its sealing face (3) which points toward the inner side (11) of the movable roller sleeve (10), comprises at least one lubricant outlet opening (5) which is connected to a supply line (12) and by means of which lubricant (31) is deliverable between the inner side (11) of the roller sleeve (10) and the sealing face (3), wherein the supply line (12) includes one part which runs within the sealing strip (1) and one part which runs outside the sealing strip (1) but within the roller (8), characterized in that the part of the supply line (12) which runs within the roller (8), on its length which is routed outside the sealing strip (1), includes a first and second line portion (21, 22), wherein the first line portion (21) is longer than the second line portion (22), and the second line portion (22) is configured so as to be more flexural in comparison with the first line portion (21).
  2. Roller (8) according to Claim 1, characterized in that the supply line (12) is routed out of the roller (8) in the region of at least one longitudinal roller end of the roller (8).
  3. Roller (8) according to at least one of the preceding claims, characterized in that the first line portion (21) commences at the at least one roller end (23) and extends in the roller (8) in the direction of the sealing strip (1), and/or the second line portion (22) commences in a region of at most one meter calculated from the point at which the supply line (12) is routed out of the sealing strip (1).
  4. Roller (8) according to at least one of the preceding claims, characterized in that the second line portion (22) has a length in the range of 15 cm to 200 cm, preferably a length in the range of 20 cm to 150 cm.
  5. Roller (8) according to at least one of the preceding claims, characterized in that the supply line (12) displays a fourth line portion (17) which is unreleasably connected to the sealing strip (1) as well as a third line portion (18) which is releasably connected to the fourth line portion (17), wherein the third line portion (18) is formed from the first and the second line portions (21, 22), wherein the supply line (12), in particular in the region of the at least one point (28), at which said supply line (12) is routed out of the sealing strip (1), displays a connection element (20) by means of which the third and fourth line portions (18, 17) are releasably interconnected.
  6. Roller (8) according to at least one of the preceding claims, characterized in that the sealing installation (9) comprises a sealing-strip holder (25) for holding the sealing strip (1), wherein the sealing-strip holder (25) has a holding portion having at least one guide face (26, 27), on which the sealing strip (1) with at least one of the two sides of the front or rear end side (24, 15) is mounted so as to be displaceable along a path when viewed in the radial direction of the roller (8), wherein the supply line (12) at at least one point (28) on at least one of the two sides of the front and rear end sides (24, 15) is routed out of the sealing strip (1), and wherein the holding portion has at least one clearance (32) through which that portion of the supply line (12) which is routed out of the at least one side of the front or rear end side (24, 15) of the sealing strip (1) is routed through the sealing-strip holder (25), and wherein the at least one clearance (32) is configured in such a manner that the sealing strip (1) together with the portion of the supply line (12) which is routed out therefrom is movable along the path in relation to the sealing-strip holder (25).
  7. Roller (8) according to Claim 6, characterized in that the at least one clearance (32) is configured so as to be hole-shaped or a groove which is open toward the top.
  8. Roller (8) according to at least one of the preceding claims, characterized in that the sealing strip (1) comprises an upper side (2) which faces the inner side (11) of the roller sleeve (10) and which comprises the sealing face (3) and the at least one lubricant outlet opening (5).
  9. Roller (8) according to at least one of the preceding claims, characterized in that the at least one lubricant outlet opening (5) is configured as a lubricant channel (4) in the form of a groove-like depression in the material of the sealing strip (1), which is formed in the material of the sealing strip (1) and in its longitudinal extent extends in the longitudinal direction of the sealing strip (1).
  10. Roller (8) according to Claim 9, characterized in that the sealing strip (1) is delimited in its length by two ends (6.1, 6.2), wherein the sealing strip (1) in the region of its two ends (6.1, 6.2) displays in each case one wall (7.1, 7.2) which delimits the lubricant channel (4) in its length.
  11. Roller (8) according to at least one of Claims 9 and 10, characterized in that the supply line (12) comprises a central supply duct (13) which extends within the sealing strip (1) along the longitudinal direction thereof, and at least one riser line (14) which interconnects the lubricant channel (4) and the central supply duct (13).
  12. Roller (8) according to Claim 11, characterized in that the central supply duct (13), along its longitudinal extent, has a variable cross-sectional area and/or cross-sectional geometry.
  13. Roller (8) according to at least one of Claims 10 to 12, characterized in that the lubricant channel (4) extends over a plurality of meters and each of the walls (7.1, 7.2) which delimit the lubricant channel (4) in its length has a length of 20 cm or less, in particular 10 cm or less.
  14. Roller (8) according to at least one of Claims 9 to 13, characterized in that during rotation of the roller sleeve (10), said roller sleeve (10) runs onto the sealing strip (1) on the front end side (24) and runs off on the rear end side (15), wherein the lubricant channel (4) is disposed between the front end side (24) and the sealing face (3).
  15. Roller (8) according to at least one of the preceding claims, characterized in that the lubricant channel (4), when viewed in a sectional plane which is perpendicular to the longitudinal extent of the sealing strip (1), has a lowest point, a front side wall extending therefrom in the direction of the front end side (24) and a rear side wall extending therefrom in the direction of the sealing face (3), wherein the upper edge of the front side wall adjoins the front end side (24) and the upper edge of the rear side wall adjoins the sealing face (3), and wherein, upon installation of the sealing installation (9) in the roller (8) according to the intended use, a straight line interconnecting the two upper edges and the horizontal encloses an angle of 1° to 89°, in particular an angle between 15° and 80°.
EP13747398.9A 2012-08-15 2013-08-09 Suction roll for a machine for producing and/or processing a paper, cardboard or tissue web Active EP2885455B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012214531 2012-08-15
PCT/EP2013/066671 WO2014026913A1 (en) 2012-08-15 2013-08-09 Suction roll for a machine for producing and/or processing a paper, cardboard or tissue web

Publications (2)

Publication Number Publication Date
EP2885455A1 EP2885455A1 (en) 2015-06-24
EP2885455B1 true EP2885455B1 (en) 2016-10-12

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EP13747398.9A Active EP2885455B1 (en) 2012-08-15 2013-08-09 Suction roll for a machine for producing and/or processing a paper, cardboard or tissue web

Country Status (5)

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US (1) US9506191B2 (en)
EP (1) EP2885455B1 (en)
CN (1) CN104641038B (en)
BR (1) BR112015003185B1 (en)
WO (1) WO2014026913A1 (en)

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DE202014001501U1 (en) * 2014-02-21 2014-03-21 Voith Patent Gmbh sealing strip
AT516191B1 (en) 2014-09-15 2016-08-15 Röchling Leripa Papertech Gmbh & Co Kg Sealing strip systems for suction rolls
US9879377B2 (en) 2015-04-10 2018-01-30 Coldwater Seals, Inc. Adjustable foil apparatus for paper making machine
AT519386A1 (en) 2015-04-10 2018-06-15 Coldwater Seals Inc Adjustable film device for papermaking machine
DE202017104513U1 (en) 2017-07-28 2017-08-14 Voith Patent Gmbh roll arrangement

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Also Published As

Publication number Publication date
WO2014026913A1 (en) 2014-02-20
CN104641038B (en) 2017-01-18
US9506191B2 (en) 2016-11-29
EP2885455A1 (en) 2015-06-24
BR112015003185A2 (en) 2017-07-04
US20160002854A1 (en) 2016-01-07
CN104641038A (en) 2015-05-20
BR112015003185B1 (en) 2022-01-11

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