EP2847381B1 - Seals with integrated lubrication water feeding system - Google Patents

Seals with integrated lubrication water feeding system Download PDF

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Publication number
EP2847381B1
EP2847381B1 EP13724198.0A EP13724198A EP2847381B1 EP 2847381 B1 EP2847381 B1 EP 2847381B1 EP 13724198 A EP13724198 A EP 13724198A EP 2847381 B1 EP2847381 B1 EP 2847381B1
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EP
European Patent Office
Prior art keywords
seals
lubricant
roll
suction roll
suction
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EP13724198.0A
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German (de)
French (fr)
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EP2847381A1 (en
Inventor
Marc Erkelenz
Jochen Honold
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Voith Patent GmbH
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Voith Patent GmbH
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Priority claimed from DE201210207692 external-priority patent/DE102012207692A1/en
Priority claimed from DE201210213544 external-priority patent/DE102012213544A1/en
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2847381A1 publication Critical patent/EP2847381A1/en
Application granted granted Critical
Publication of EP2847381B1 publication Critical patent/EP2847381B1/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

Definitions

  • the invention relates to a suction roll with a sealing strip system in particular for use in a machine for producing a fibrous web such as a paper, board or tissue web according to the preamble of claim 1.
  • Today's sealing strips are usually made of soft materials such as e.g. Graphite / rubber. In the prior art, these are usually lubricated by an external spray tube.
  • Such a sealing strip with a single spray tube is for example from the EP 1 350 890 A out.
  • the sealing strips may become heavily soiled over the operating life of the paper machine, which may adversely affect the runnability of the paper machine, for example due to vacuum fluctuations caused by heavily worn sealing strips, which may result in the drawing of false air.
  • a cleaning of the sealing strips can only be done reliably when the machine is standing, the roller has been removed and the suction box has been pulled so that the sealing strips are freely accessible. During operation, reliable cleaning is not possible.
  • the devices for applying the lubricant are each arranged so that the lubricant on the start side on the at least two sealing strips can be applied and transported by the rotation of the roll shell on the sealing surfaces.
  • Various means for controlling and / or regulating the supply of lubricant to each of the sealing strips are provided according to the invention, via which the lubricant supply can be separately controlled and / or regulated.
  • individual sealing strips can be specifically supplied with more or less lubricant or be rinsed more strongly in the case of known contamination tendency of individual positions in order to achieve better cleaning.
  • each and every one of the sealing strips is both sufficiently lubricated over its entire sealing surface resting against the roll shell and is also cleaned in the best possible way.
  • the service life of the sealing strips can thereby be significantly improved, which leads to improved maintenance of the vacuum and can counteract unplanned machine downtime.
  • the devices for applying the lubricant in the form of spray pipes are formed, which are each arranged upstream of the at least two sealing strips.
  • Such spray pipes have been known for some time, so that the measures according to the invention are applicable in a simple manner to a larger number of sealing strips.
  • the spray pipes may extend substantially parallel to the sealing strips and substantially apart from any, in comparison to the length of the sealing strips short interruptions over the entire length of the sealing strips in the cross machine direction.
  • the devices for applying the lubricant are formed in the at least two sealing strips, wherein in each of the sealing strips at least one distribution channel is provided which has outflow openings, which are formed on the upstream side of the sealing strips.
  • This embodiment is suitable especially for cramped installation positions, where it is not possible to arrange a separate spray tube in the area of the sealing strip.
  • the distribution channel apart from any, in comparison to the length of the sealing strips short interruptions substantially over the entire length extend in the cross machine direction, so that a reliable lubrication over the entire width is guaranteed.
  • the distribution channel is formed in each case by a cutout or a hole in the sealing strips.
  • the distribution channel can be connected by means of connecting channels with the discharge openings.
  • the distribution channel has at least one supply line per sealing strip. It is also possible to provide several leads per sealing strip to allow a zonal controllable lubricant application.
  • the supply lines extend from the devices in the sealing strips in an inner space of the suction roll to a roller cover closing off the suction roll.
  • clutches may be provided in the roller cover, to which the leads are connectable. This ensures easy connectability of the supply lines to a lubricant supply device.
  • external lines can also be connected to the couplings, which establish the connection to the lubricant supply device.
  • the lubricant supply device may be arranged outside the suction roll.
  • the means for controlling and / or regulating can be arranged inside or outside the suction roll.
  • the system can be connectable to a process control system of the machine for producing or processing a fibrous web. This makes it possible to perform the control / regulation efficiently and responsively.
  • FIG. 1 is first schematically shows a schematic diagram of a suction roll 1 for a machine for producing or processing a fibrous web such as a paper, board or tissue web.
  • the suction roll 1 in this case has a perforated roll shell 2, which is rotatably mounted, as well as in the interior of the suction roll 1 a fixed suction box 3. Since the above components represent state of the art, is dispensed detailed description and a detailed description for reasons of clarity ,
  • the suction box 3 serves to generate a vacuum which sucks liquid from the fibrous web through perforations present in the roll jacket 2 and thus increases the dry content of the fibrous web. Furthermore, the vacuum is used in some evacuated positions for deflecting and guiding the fibrous web.
  • the vacuum always be reliably maintained and regulated, otherwise there may be uneven drainage performance of the fibrous web or problems in the operation of the machine, which may be reflected for example in unplanned downtime and expensive repairs.
  • the suction box 3 has currently at least two, in the in FIG. 1 illustrated embodiment, three sealing strips 4, which extend over the length of the suction box 3 in the cross machine direction, seal the suction box 3 against an interior of the suction roll 1 and thus allow the maintenance of the necessary for dewatering or leadership of the fibrous web vacuum.
  • the sealing strips 4 are in each case via a sealing surface 24 in sealing contact with an inner surface of the roll shell 2, which rotates over the fixed suction box 3 away.
  • sealing strips 4 lie with their sealing surfaces 24 in contact with the roll shell 2, they experience a strong wear due to abrasion. Furthermore, a suction roll 1 contaminates during operation by fibers and the additives present in the suspension used to produce the fibrous web, which through the perforations of the roll shell 2 into the interior of the Suction roll 1 and the suction box 3 advised. These factors make reliable lubrication and cleaning of the sealing strips 4 indispensable.
  • a lubricant 6 which is supplied via a suitable device 5 such as, for example, a spray tube 20 and sprayed onto the leading sealing strip 4.
  • a suitable device 5 such as, for example, a spray tube 20 and sprayed onto the leading sealing strip 4.
  • lubricant 6 usually water is used, but it can also, as discussed below, carried out an addition of chemicals, which improves the lubrication and / or cleaning effect.
  • each of the sealing strips 4 has at least one separate supply line 7 for the lubricant 6. These are laid in the interior of the suction roll 1 of the devices 5 of each of the sealing strips 4 to a roll-ended roller cover 8.
  • suitable couplings 9 are present, to which the supply lines 7 are connectable and which allow the introduction of the lubricant 6 from the outside.
  • the number of couplings 9 is at least as high as the number of leads 7, but can also be chosen to be larger allow flexible handling of the lubricant supply with other leads 7.
  • each sealing strip 4 receives its own lubricant supply, which is separately controllable.
  • the lubricant supply device 11 Via the external lubricant supply device 11, which is positioned outside the suction roll 1, the lubricant supply can be monitored, regulated and controlled.
  • the lubricant supply device 11 ideally contains a separate line 10 for lubricant 6 for each sealing strip 4.
  • Each of the lines 10 and / or the supply lines 7 may comprise additional means 12 for controlling and / or controlling the lubricant supply line, such as shut-off valves, pressure gauges, particle filters, flow meters and / or flow regulators.
  • additional means 12 for controlling and / or controlling the lubricant supply line, such as shut-off valves, pressure gauges, particle filters, flow meters and / or flow regulators.
  • the listed elements are not exhaustive, it can be provided any number of means 12 in any number to allow ideal monitoring or adjustment of the amount of lubricant.
  • the particle filter is used to filter the lubricant 6 to the sealing strips 4, to filter out possible suspended matter. Via the flow regulator or the shut-off valve, the amount of lubricant 6 can be varied.
  • the pressure gauge can provide information about possible blockages in the supply lines 7 of the sealing strips 4.
  • the means 12 for control and / or regulation need not necessarily sit outside of the suction roll 1. If enough space is available, individual modules such as the flow regulator could be installed in the suction roll 1 along the lubricating water strand, as this is very schematically in FIG. 1 is shown. However, the good accessibility for maintenance purposes should be considered.
  • the means 12 can be selected both mechanically and electronically. Therefore, it is possible to include the modules in the machine control, and include these e.g. from the point of view of the paper machine to check or even change.
  • lubricant supply can be automated for different production conditions (e.g., web break, standard production, machine startup, crawl, etc.).
  • a metering unit for chemicals can also be integrated into the lines 7.
  • cleaning of the sealing strips 4 can be carried out.
  • the addition of the chemicals can be done both continuously and discontinuously (in certain machine conditions).
  • the chemicals can not only be used to clean the sealing strips 4, but also by e.g. To reduce deposits in the perforations of the roll shell 2 or in the suction boxes 3 and thus increase the life expectancy of the suction roll 1. Possibly. even chemicals that support the retention of the paper web can be used.
  • each of the sealing strips 4 associated with a spray tube 20, which is arranged on the start side of the respective sealing strip 4 and lubricant 6 on each of the sealing strips 4 so applied that the lubricant 6 wets the sealing strips 4 on the start side and by the rotation of the roll shell 2 is transported to the respective sealing surface 24 of the sealing strips 4.
  • the spray tubes 20 extend normally over the entire length of the sealing strips 4 and each have a plurality of outlets, so that a uniform distribution of the lubricant 6 is possible over the machine transverse direction. Based on this situation, it would also be conceivable, each of the spray tubes 20 allocate several supply lines 7, so that it is possible to realize a zonal controllable lubricant supply. Also, a plurality of short spray tubes 20 are conceivable, which in turn extend in their entirety over the entire length of the sealing strips 4 and are also provided with separate leads 7.
  • FIG. 2 is in a highly schematized fragmentary representation of a portion of the in FIG. 1 described system shown. For reasons of clarity, the curvature of the roll mantle 2 has been neglected.
  • each of the sealing strips 4 has its own device 5, in the first embodiment in the form of a spray tube 20, in order to ensure optimum lubrication of the sealing surfaces 24 and cleaning of the sealing strips 4.
  • the spray tubes 20 are arranged in each case inlet side in the region of the sealing strips 4 and give lubricant 6 on the start-side surface of the sealing strips 4 and / or on the inside of the roll shell 2 directly in front of the sealing strips 4, so that the lubricant 6 by the rotation of the roll shell 2 is transported to the sealing surfaces 24.
  • the sealing strips 4 may have a starting chamfer, which is formed in the form of a chamfer of the sealing strips 4 on one of the direction of movement of the roll shell 2 opposite side and the formation of a Wedge of lubricant 6 promotes, whereby the transport of the lubricant 6 is conveyed to the sealing surface 24.
  • the positioning of the spray tubes 20 can be arbitrarily adapted to the geometric conditions.
  • the spray tubes 20 may thus be arranged, for example, in the vicinity of the sealing strips 4, but also bear directly against the sealing strips 4.
  • the positioning can also differ per sealing strip 4.
  • the respective spray tubes 20 are, as already described, provided with a plurality of outflow openings 22, which may be arranged at uniform or non-uniform distances from each other.
  • the outflow openings 22 are arranged so that the sealing strips 4 are uniformly supplied with lubricant 6 over its entire length in the cross-machine direction.
  • FIG. 3 is in the same representation as in FIG. 2 A second embodiment of the invention designed according to the system shown.
  • the devices 5 are integrated into the sealing strips 4, so that no separate spray tube 20 has to be arranged to each sealing strip 4.
  • the sealing strips 4 a distribution channel 21 is formed, which in turn is connected to discharge openings 22 via connecting channels 23.
  • the outflow openings 22 are formed in a start-up side 24 of the sealing strips 4, so that the lubricant 6 brought before the sealing strips 4 and introduced by the over the sealing strips 4 away rotating roll shell 2 for lubrication between the two friction partner roll shell 2 and sealing surface 24 of the sealing strips 4 can.
  • the outflow openings 22 may be distributed uniformly or non-uniformly over the length of the sealing strips 4.
  • a separate supply line 7 is provided per sealing strip 4, which directs lubricant to the sealing strip 4.
  • supply lines 7 per sealing strip 4 are also conceivable and could allow a zonal lubricant supply, which would allow, for example, in the edge regions and in the middle of the roll a different levels of lubricant application.
  • the invention is not limited to the illustrated embodiments. In particular, it is possible to combine the individual features of the invention. Thus, it is conceivable and useful, for example, to provide one or more of the sealing strips 4 with spray tubes 20 and to equip one or more sealing strips 4 with integrated distribution channels 21 for lubricant 6, which can accommodate different cramped installation positions.

Description

Die Erfindung geht aus von einer Saugwalze mit einem Dichtleistensystem insbesondere zur Verwendung in einer Maschine zur Herstellung einer Faserstoffbahn wie einer Papier-, Karton- oder Tissuebahn nach dem Oberbegriff von Anspruch 1.The invention relates to a suction roll with a sealing strip system in particular for use in a machine for producing a fibrous web such as a paper, board or tissue web according to the preamble of claim 1.

Heutige Dichtleisten bestehen in der Regel aus weichen Materialien wie z.B. Graphit/Gummi. Nach Stand der Technik werden diese gewöhnlich von einem externen Spritzrohr geschmiert.Today's sealing strips are usually made of soft materials such as e.g. Graphite / rubber. In the prior art, these are usually lubricated by an external spray tube.

Eine derartige Dichtleiste mit einem einzelnen Spritzrohr geht beispielsweise aus der EP 1 350 890 A hervor.Such a sealing strip with a single spray tube is for example from the EP 1 350 890 A out.

Zur Abdichtung einer Unter- bzw. Überdruckkammer sind jedoch mindestens zwei Dichtleisten über die Walzenbreite nötig. Es gibt auch Anwendungen, bei denen mehr als zwei Dichtleisten benötigt werden, insbesondere, wenn es mehrere Unter- bzw. Überdruckkammern gibt, welche bei unterschiedlichen Drücken arbeiten.However, at least two sealing strips over the width of the roll are necessary for sealing a negative pressure or overpressure chamber. There are also applications where more than two sealing strips are needed, especially if there are several underpressure chambers operating at different pressures.

Gewöhnlicherweise kommt auch hier in der Regel nur ein Spritzrohr zum Einsatz, das für die Schmierung aller Dichtleisten verantwortlich ist. Dieses ist vor der in Anlaufrichtung gesehen ersten Dichtleiste angeordnet und gibt's Schmiermittel auf diese auf. Die nachgeordneten Dichtleisten erhalten ihre Schmierung durch den Anteil des Schmiermittels, der von dem sich drehenden Walzenmantel verschleppt wird. Hieraus kann eine ungleichmäßige Schmierung resultieren, bei der besonders die hinteren Dichtleisten nicht mehr mit ausreichend Schmierwasser versorgt werden. Die Ursache hierfür ist insbesondere in ungleichmäßigen Verschmutzungen der Walzenoberfläche oder unterschiedlich stark verlegten Saugbohrungen zu sehen, wodurch über die axiale Erstreckung einer Walze unterschiedlich viel Schmiermittel an die nachgereihten Dichtleisten verschleppt wird.Usually, here too, usually only one spray tube is used, which is responsible for the lubrication of all sealing strips. This is arranged in front of the first sealing strip seen in the direction of feed and gives it's lubricant on this. The downstream sealing strips receive their lubrication by the proportion of the lubricant that is carried off by the rotating roll shell. This can result in uneven lubrication, in particular, the rear sealing strips are no longer supplied with sufficient lubricating water. The reason for this is to be seen in particular in uneven contamination of the roll surface or differently laid suction holes, whereby over the axial extent of a roller different amounts of lubricant is abducted to the lined sealing strips.

Zwar sind aus dem Stand der Technik, z.B. EP 1 479 820 A1 oder EP 1 505 206 A1 auch Lösungen bekannt, in denen alle Dichtleitsten eine eigene Schmierung durch Spritzrohre o.ä. aufweisen. Die dort offenbarten Lösungen haben jedoch den Nachteil, dass für alle Leisten dieselbe Schmierung bereitgestellt wird. Dies ist nachteilig, da die Leisten erfahrungsgemäß an unterschiedlichen Einbaupositionen und bei veränderten Betriebszuständen sich ändernde Anforderungen an Schmiermittel haben.Although are from the prior art, eg EP 1 479 820 A1 or EP 1 505 206 A1 Also known solutions in which all Dichtleitsten own lubrication by spray pipes or the like. exhibit. However, the solutions disclosed there have the disadvantage that the same lubrication is provided for all strips. This is disadvantageous because, according to experience, the strips have varying requirements for lubricant at different installation positions and under changed operating conditions.

Gemäß einem weiteren Aspekt können die Dichtleisten über die Betriebsdauer der Papiermaschine stark verschmutzen, was sich unter Umständen negativ auf die Runnability der Papiermaschine auswirken kann, beispielsweise aufgrund von Vakuumschwankungen, die durch stark verschlissene Dichtleisten hervorgerufen werden, was zum Ziehen von Falschluft führen kann.In another aspect, the sealing strips may become heavily soiled over the operating life of the paper machine, which may adversely affect the runnability of the paper machine, for example due to vacuum fluctuations caused by heavily worn sealing strips, which may result in the drawing of false air.

Ein Reinigen der Dichtleisten kann nur zuverlässig erfolgen, wenn die Maschine steht, die Walze ausgebaut und der Saugkasten gezogen ist, sodass die Dichtleisten frei zugänglich sind. Während des Betriebs ist ein zuverlässiges Reinigen nicht möglich.A cleaning of the sealing strips can only be done reliably when the machine is standing, the roller has been removed and the suction box has been pulled so that the sealing strips are freely accessible. During operation, reliable cleaning is not possible.

Es ist somit Aufgabe der Erfindung, Maßnahmen anzugeben, welche die Nachteile des Standes der Technik vermeiden und eine zuverlässige Schmierung und Reinigung aller Dichtleisten ermöglichen.It is therefore an object of the invention to provide measures that avoid the disadvantages of the prior art and allow reliable lubrication and cleaning of all sealing strips.

Die Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 in Verbindung mit den gattungsbildenden Merkmalen gelöst.The object is achieved by the characterizing features of claim 1 in conjunction with the generic features.

Es ist dabei vorgesehen, dass die Vorrichtungen zur Ausbringung des Schmiermittels jeweils so angeordnet sind, dass das Schmiermittel anlaufseitig auf die zumindest zwei Dichtleisten auftragbar und durch die Drehung des Walzenmantels auf die Dichtflächen transportierbar ist.
Erfindungsgemäß sind diverse Mittel zur Steuerung und/oder Regelung der Schmiermittelzufuhr zu jeder der Dichtleisten vorgesehen, über welche die Schmiermittelzufuhr separat steuer- und/oder regelbar ist.It is provided that the devices for applying the lubricant are each arranged so that the lubricant on the start side on the at least two sealing strips can be applied and transported by the rotation of the roll shell on the sealing surfaces.
Various means for controlling and / or regulating the supply of lubricant to each of the sealing strips are provided according to the invention, via which the lubricant supply can be separately controlled and / or regulated.

Dadurch können einzelne Dichtleisten gezielt mit mehr oder weniger Schmiermittel versorgt werden oder bei bekannter Verschmutzungsneigung einzelner Positionen stärker gespült werden, um eine bessere Reinigung zu erzielen.As a result, individual sealing strips can be specifically supplied with more or less lubricant or be rinsed more strongly in the case of known contamination tendency of individual positions in order to achieve better cleaning.

Dadurch kann sichergestellt werden, dass jede einzelne der Dichtleisten über ihre gesamte am Walzenmantel anliegende Dichtfläche sowohl ausreichend geschmiert ist als auch bestmöglich gereinigt wird. Insbesondere für die nachgereihten Dichtleisten bei mehreren aufeinanderfolgenden Vakuumzonen kann dadurch die Standzeit der Dichtleisten signifikant verbessert werden, was zu einer verbesserten Aufrechterhaltung des Vakuums führt und ungeplanten Maschinenstillständen entgegenwirken kann.In this way it can be ensured that each and every one of the sealing strips is both sufficiently lubricated over its entire sealing surface resting against the roll shell and is also cleaned in the best possible way. In particular, for the stringed sealing strips in several successive vacuum zones, the service life of the sealing strips can thereby be significantly improved, which leads to improved maintenance of the vacuum and can counteract unplanned machine downtime.

Weitere bevorzugte Ausführungsbeispiele und vorteilhafte Aspekte der Erfindung gehen aus den Unteransprüchen hervor.Further preferred embodiments and advantageous aspects of the invention will become apparent from the dependent claims.

Gemäß einem Ausführungsbeispiel der Erfindung können die Vorrichtungen zur Ausbringung des Schmiermittels in Form von Spritzrohren ausgebildet sind, welche jeweils anlaufseitig der zumindest zwei Dichtleisten angeordnet sind. Derartige Spritzrohre sind schon länger bekannt, so dass die erfindungsgemäßen Maßnahmen in einfacher Weise auf eine größere Anzahl von Dichtleisten anwendbar sind.According to one embodiment of the invention, the devices for applying the lubricant in the form of spray pipes are formed, which are each arranged upstream of the at least two sealing strips. Such spray pipes have been known for some time, so that the measures according to the invention are applicable in a simple manner to a larger number of sealing strips.

Bevorzugt können sich die Spritzrohre im Wesentlichen parallel zu den Dichtleisten und im Wesentlichen abgesehen von eventuellen, im Vergleich zur Länge der Dichtleisten kurzen Unterbrechungen über die gesamte Länge der Dichtleisten in Maschinenquerrichtung erstrecken.Preferably, the spray pipes may extend substantially parallel to the sealing strips and substantially apart from any, in comparison to the length of the sealing strips short interruptions over the entire length of the sealing strips in the cross machine direction.

Gemäß einem weiteren vorteilhaften Ausführungsbeispiel der Erfindung kann vorgesehen sein, dass die Vorrichtungen zur Ausbringung des Schmiermittels in den zumindest zwei Dichtleisten ausgebildet sind, wobei in jeder der Dichtleisten zumindest ein Verteilerkanal vorgesehen ist, der Ausströmöffnungen aufweist, die anlaufseitig der Dichtleisten ausgebildet sind. Diese Ausführungsform eignet sich besonders für beengte Einbaupositionen, wo es nicht möglich ist, im Bereich der Dichtleiste ein separates Spritzrohr anzuordnen.According to a further advantageous embodiment of the invention can be provided that the devices for applying the lubricant are formed in the at least two sealing strips, wherein in each of the sealing strips at least one distribution channel is provided which has outflow openings, which are formed on the upstream side of the sealing strips. This embodiment is suitable especially for cramped installation positions, where it is not possible to arrange a separate spray tube in the area of the sealing strip.

Vorteilhafterweise kann sich auch hier der Verteilerkanal, abgesehen von eventuellen, im Vergleich zur Länge der Dichtleisten kurzen Unterbrechungen im Wesentlichen über deren gesamte Länge in Maschinenquerrichtung erstrecken, so dass eine zuverlässige Schmierung über die gesamte Breite gewährleistet ist.Advantageously, here also the distribution channel, apart from any, in comparison to the length of the sealing strips short interruptions substantially over the entire length extend in the cross machine direction, so that a reliable lubrication over the entire width is guaranteed.

Vorteilhafterweise ist der Verteilerkanal jeweils durch einen Ausschnitt aus oder eine Bohrung in den Dichtleisten gebildet.Advantageously, the distribution channel is formed in each case by a cutout or a hole in the sealing strips.

Gemäß einer vorteilhaften Weiterbildung der Erfindung kann der Verteilerkanal mittels Verbindungskanälen mit den Ausströmöffnungen verbunden sein sein.According to an advantageous embodiment of the invention, the distribution channel can be connected by means of connecting channels with the discharge openings.

Bevorzugt weist der Verteilerkanal wenigstens eine Zuleitung pro Dichtleiste auf. Es ist auch möglich, mehrere Zuleitungen pro Dichtleiste vorzusehen, um eine zonal regelbare Schmiermittelausbringung zu ermöglichen.Preferably, the distribution channel has at least one supply line per sealing strip. It is also possible to provide several leads per sealing strip to allow a zonal controllable lubricant application.

Vorteilhafterweise erstrecken sich die Zuleitungen von den Vorrichtungen in den Dichtleisten in einem Innenraum der Saugwalze bis zu einem die Saugwalze abschließenden Walzendeckel.Advantageously, the supply lines extend from the devices in the sealing strips in an inner space of the suction roll to a roller cover closing off the suction roll.

Gemäß einem vorteilhaften Aspekt der Erfindung können in dem Walzendeckel Kupplungen vorgesehen sein, an welche die Zuleitungen anschließbar sind. Dies sorgt für eine einfache Verbindbarkeit der Zuleitungen an eine Schmiermittelzuführungseinrichtung.According to an advantageous aspect of the invention, clutches may be provided in the roller cover, to which the leads are connectable. This ensures easy connectability of the supply lines to a lubricant supply device.

Vorteilhafterweise sind an die Kupplungen äußere Leitungen ebenso anschließbar, welche die Verbindung zu der Schmiermittelzuführungseinrichtung herstellen.Advantageously, external lines can also be connected to the couplings, which establish the connection to the lubricant supply device.

Bevorzugt kann die Schmiermittelzuführungseinrichtung außerhalb der Saugwalze angeordnet sein.Preferably, the lubricant supply device may be arranged outside the suction roll.

Die Mittel zur Steuerung und/oder Regelung können innerhalb oder außerhalb der Saugwalze angeordnet sein.The means for controlling and / or regulating can be arranged inside or outside the suction roll.

Besonders bevorzugt kann das System an ein Prozessleitsystem der Maschine zur Herstellung oder Verarbeitung einer Faserstoffbahn anbindbar sein. Dadurch ist es möglich, die Steuerung/Regelung effizient und reaktionsschnell durchzuführen.Particularly preferably, the system can be connectable to a process control system of the machine for producing or processing a fibrous web. This makes it possible to perform the control / regulation efficiently and responsively.

Die Erfindung wird nachfolgend unter Bezugnahme auf die Figuren beispielhaft näher erläutert. Es zeigen:

Figur 1
eine stark schematisierte Prinzipdarstellung einer Saugwalze für eine Maschine zur Herstellung oder Verarbeitung einer Faserstoffbahn, welche ein erfindungsgemäß ausgestaltetes Dichtleistenschmierungssystem aufweist,
Figur 2
eine stark schematisierte ausschnittsweise Darstellung aus dem ersten Ausführungsbeispiels der Anordnung gemäß Figur 1 im Bereich II in Figur 1, und
Figur 3
eine stark schematisierte Darstellung eines zweiten Ausführungsbeispiels einer Anordnung von Vorrichtungen zur Ausbringung von Schmiermittel an Dichtleisten.
The invention will be explained in more detail below with reference to the figures by way of example. Show it:
FIG. 1
a highly schematic basic representation of a suction roll for a machine for producing or processing a fibrous web, which has a sealing strip lubrication system designed according to the invention,
FIG. 2
a highly schematic partial view of the first embodiment of the arrangement according to FIG. 1 in area II in FIG. 1 , and
FIG. 3
a highly schematic representation of a second embodiment of an arrangement of devices for applying lubricant to sealing strips.

In Figur 1 ist zunächst schematisiert eine Prinzipskizze einer Saugwalze 1 für eine Maschine zur Herstellung oder Verarbeitung einer Faserstoffbahn wie einer Papier-, Karton- oder Tissuebahn dargestellt. Die Saugwalze 1 weist dabei einen perforierten Walzenmantel 2 auf, welcher drehbar gelagert ist, sowie im Inneren der Saugwalze 1 einen feststehenden Saugkasten 3. Da die genannten Bauteile Stand der Technik darstellen, wird auf eine detaillierte Darstellung sowie eine ausführliche Beschreibung aus Gründen der Übersichtlichkeit verzichtet.In FIG. 1 is first schematically shows a schematic diagram of a suction roll 1 for a machine for producing or processing a fibrous web such as a paper, board or tissue web. The suction roll 1 in this case has a perforated roll shell 2, which is rotatably mounted, as well as in the interior of the suction roll 1 a fixed suction box 3. Since the above components represent state of the art, is dispensed detailed description and a detailed description for reasons of clarity ,

Der Saugkasten 3 dient der Erzeugung eines Vakuums, welches durch im Walzenmantel 2 vorhandene Perforationen Flüssigkeit aus der Faserstoffbahn absaugt und so den Trockengehalt der Faserstoffbahn steigert. Weiterhin wird das Vakuum in manchen besaugten Positionen zum Umlenken und Leiten der Faserstoffbahn eingesetzt.The suction box 3 serves to generate a vacuum which sucks liquid from the fibrous web through perforations present in the roll jacket 2 and thus increases the dry content of the fibrous web. Furthermore, the vacuum is used in some evacuated positions for deflecting and guiding the fibrous web.

Aus naheliegenden Gründen ist es wünschenswert, dass das Vakuum stets zuverlässig erhalt- und regelbar ist, da es sonst zu ungleichmäßiger Entwässerungsleistung der Faserstoffbahn bzw. zu Problemen beim Betrieb der Maschine kommen kann, was sich beispielsweise in ungeplanten Stillstandszeiten und teuren Reparaturen niederschlagen kann.For obvious reasons, it is desirable that the vacuum always be reliably maintained and regulated, otherwise there may be uneven drainage performance of the fibrous web or problems in the operation of the machine, which may be reflected for example in unplanned downtime and expensive repairs.

Der Saugkasten 3 weist gängigerweise zumindest zwei, in dem in Figur 1 dargestellten Ausführungsbeispiel drei Dichtleisten 4 auf, welche sich über die Länge des Saugkastens 3 in Maschinenquerrichtung erstrecken, den Saugkasten 3 gegen einen Innenraum der Saugwalze 1 abdichten und so den Erhalt des zur Entwässerung oder Führung der Faserstoffbahn nötigen Vakuums ermöglichen. Die Dichtleisten 4 liegen dabei über jeweils eine Dichtfläche 24 in dichtender Anlage an einer Innenfläche des Walzenmantels 2 an, welcher sich über den feststehenden Saugkasten 3 hinwegdreht.The suction box 3 has currently at least two, in the in FIG. 1 illustrated embodiment, three sealing strips 4, which extend over the length of the suction box 3 in the cross machine direction, seal the suction box 3 against an interior of the suction roll 1 and thus allow the maintenance of the necessary for dewatering or leadership of the fibrous web vacuum. The sealing strips 4 are in each case via a sealing surface 24 in sealing contact with an inner surface of the roll shell 2, which rotates over the fixed suction box 3 away.

In dem in Figur 1 gezeigten Ausführungsbeispiel sind somit zwei voneinander getrennte Vakuumzonen vorhanden. Es können jedoch noch weitere Dichtleisten 4 vorhanden sein, wenn nicht nur zwei, sondern noch weitere voneinander getrennte Vakuumzonen vorgesehen sind, die insbesondere auch mit unterschiedlichen Unterdrücken betrieben werden sollen.In the in FIG. 1 shown embodiment thus two separate vacuum zones are present. However, there may be even more sealing strips 4, if not only two, but also more separate vacuum zones are provided which are to be operated in particular with different negative pressures.

Bedingt dadurch, dass die Dichtleisten 4 mit ihren Dichtflächen 24 in Anlage am Walzenmantel 2 liegen, erfahren sie einen starken Verschleiß durch Abrieb. Weiterhin verschmutzt eine Saugwalze 1 während des Betriebs durch Fasern und die in der zur Herstellung der Faserstoffbahn angesetzten Suspension vorhandenen Zuschlagsstoffe, welche durch die Perforationen des Walzenmantels 2 ins Innere der Saugwalze 1 bzw. den Saugkasten 3 geraten. Diese Faktoren machen eine zuverlässige Schmierung und Reinigung der Dichtleisten 4 unabdingbar.Due to the fact that the sealing strips 4 lie with their sealing surfaces 24 in contact with the roll shell 2, they experience a strong wear due to abrasion. Furthermore, a suction roll 1 contaminates during operation by fibers and the additives present in the suspension used to produce the fibrous web, which through the perforations of the roll shell 2 into the interior of the Suction roll 1 and the suction box 3 advised. These factors make reliable lubrication and cleaning of the sealing strips 4 indispensable.

Gängigerweise ist es üblich, die Dichtleisten 4 mittels eines Schmiermittels 6, welches über eine geeignete Vorrichtung 5 wie beispielsweise ein Spritzrohr 20 zugeleitet und an die führende Dichtleiste 4 gespritzt wird, zu schmieren und zu reinigen. Als Schmiermittel 6 wird gewöhnlich Wasser eingesetzt, es kann jedoch auch, wie weiter unten angesprochen, ein Zusatz von Chemikalien erfolgen, der die Schmier- und/oder Reinigungswirkung verbessert.Usually, it is customary to lubricate and clean the sealing strips 4 by means of a lubricant 6, which is supplied via a suitable device 5 such as, for example, a spray tube 20 and sprayed onto the leading sealing strip 4. As lubricant 6 usually water is used, but it can also, as discussed below, carried out an addition of chemicals, which improves the lubrication and / or cleaning effect.

Durch die Zufuhr von Schmiermittel 6 wird sowohl für die Schmierung der Dichtleisten 4 bei Anlage an den Walzenmantel 2 über die Dichtflächen 24 gesorgt als auch eine gewisse Reinigungswirkung der Dichtleisten 4 erzielt.By the supply of lubricant 6 is provided both for the lubrication of the sealing strips 4 in contact with the roll shell 2 via the sealing surfaces 24 as well as a certain cleaning effect of the sealing strips 4 achieved.

Dadurch, dass gewöhnlich jedoch nur ein Spritzrohr 20 für mehrere Dichtleisten 4 vorhanden ist, werden beide Aufgaben teilweise nur unzureichend erfüllt. Dies ist insbesondere für die in Laufrichtung gesehen nachgereihten Dichtleisten 4 sowie für deren randständige Bereiche der Fall. In der Folge verschleißen und verschmutzen die Dichtleisten 4 ungleichmäßig, was zum Ziehen von Falschluft, ungleichmäßigem oder einbrechendem Vakuum, Fehlfunktionen des Saugkastens 3 bis hin zum gänzlichen Maschinenstillstand durch Bahnabriss aufgrund zu hoher Feuchte und/oder mangelnder Führung der Faserstoffbahn führen kann.Due to the fact, however, that usually only one spray tube 20 is present for a plurality of sealing strips 4, both tasks are partially fulfilled inadequately. This is the case, in particular, for the sealing strips 4 lined up in the running direction and for their peripheral regions. As a result, wear and dirty the sealing strips 4 unevenly, which can lead to the drawing of false air, uneven or burglary vacuum, malfunction of the suction box 3 to the total machine downtime due to web break due to high humidity and / or lack of leadership of the fibrous web.

Um dem entgegenzuwirken, ist erfindungsgemäß vorgesehen, dass jede der Dichtleisten 4 zumindest eine separate Zuleitung 7 für das Schmiermittel 6 besitzt. Diese sind im Inneren der Saugwalze 1 von den Vorrichtungen 5 jeder der Dichtleisten 4 bis zu einem walzenendständigen Walzendeckel 8 verlegt. Im Walzendeckel 8 sind geeignete Kupplungen 9 vorhanden, an welche die Zuleitungen 7 anschließbar sind und welche die Einleitung des Schmiermittels 6 von außen ermöglichen. Idealerweise ist die Anzahl der Kupplungen 9 mindestens so hoch wie die Anzahl der Zuleitungen 7, kann jedoch auch größer gewählt werden, um eine flexible Handhabung der Schmiermittelzufuhr auch mit weiteren Zuleitungen 7 zu ermöglichen.To counteract this, it is provided according to the invention that each of the sealing strips 4 has at least one separate supply line 7 for the lubricant 6. These are laid in the interior of the suction roll 1 of the devices 5 of each of the sealing strips 4 to a roll-ended roller cover 8. In the roller cover 8 suitable couplings 9 are present, to which the supply lines 7 are connectable and which allow the introduction of the lubricant 6 from the outside. Ideally, the number of couplings 9 is at least as high as the number of leads 7, but can also be chosen to be larger allow flexible handling of the lubricant supply with other leads 7.

Außerhalb der Saugwalze 1 können dann an die Kupplungen 9 Leitungen 10 angekoppelt werden, welche die Verbindung zu einer Schmiermittelzuführungseinrichtung 11 herstellen. Somit erhält jede Dichtleiste 4 für sich eine eigene Schmiermittelzufuhr, die separat regelbar ist.Outside the suction roll 1, lines 10 can then be coupled to the couplings 9, which produce the connection to a lubricant supply device 11. Thus, each sealing strip 4 receives its own lubricant supply, which is separately controllable.

Über die externe Schmiermittelzuführungseinrichtung 11, die außerhalb der Saugwalze 1 positioniert wird, kann die Schmiermittelzufuhr überwacht, geregelt und gesteuert werden. Die Schmiermittelzuführungseinrichtung 11 enthält idealerweise für jede Dichtleiste 4 eine eigene Leitung 10 für Schmiermittel 6.Via the external lubricant supply device 11, which is positioned outside the suction roll 1, the lubricant supply can be monitored, regulated and controlled. The lubricant supply device 11 ideally contains a separate line 10 for lubricant 6 for each sealing strip 4.

Jede der Leitungen 10 und/oder der Zuleitungen 7 kann zusätzliche Mittel 12 zur Regelung und/oder Steuerung der Schmiermittelzuleitung umfassen, wie beispielsweise Absperrhähne, Manometer, Partikelfilter, Durchflussmesser und/oder Durchflussregler. Die aufgeführten Elemente sind dabei nicht abschließend, es können beliebige Mittel 12 in beliebiger Anzahl vorgesehen sein, um eine ideale Überwachung bzw. Einstellung der Schmiermittelmenge zu ermöglichen.Each of the lines 10 and / or the supply lines 7 may comprise additional means 12 for controlling and / or controlling the lubricant supply line, such as shut-off valves, pressure gauges, particle filters, flow meters and / or flow regulators. The listed elements are not exhaustive, it can be provided any number of means 12 in any number to allow ideal monitoring or adjustment of the amount of lubricant.

Der Partikelfilter dient zur Filterung des Schmiermittels 6 zu den Dichtleisten 4, um mögliche Schwebestoffe rauszufiltern. Über den Durchflussregler oder den Absperrhahn kann die Menge des Schmiermittels 6 variiert werden. Das Manometer kann Aufschluss über möglicher Verstopfungen in den Zuleitungen 7 der Dichtleisten 4 geben.The particle filter is used to filter the lubricant 6 to the sealing strips 4, to filter out possible suspended matter. Via the flow regulator or the shut-off valve, the amount of lubricant 6 can be varied. The pressure gauge can provide information about possible blockages in the supply lines 7 of the sealing strips 4.

Die Mittel 12 zur Steuerung und/oder Regelung müssen nicht zwangsläufig außerhalb der Saugwalze 1 sitzen. Ist genug Platz vorhanden, könnten einzelne Module wie z.B. der Durchflussregler auch in der Saugwalze 1 entlang des Schmierwasserstrangs eingebaut werden, wie dies stark schematisiert in Figur 1 dargestellt ist. Dabei sollte allerdings die gute Zugänglichkeit für Instandhaltungszwecke Beachtung finden.The means 12 for control and / or regulation need not necessarily sit outside of the suction roll 1. If enough space is available, individual modules such as the flow regulator could be installed in the suction roll 1 along the lubricating water strand, as this is very schematically in FIG. 1 is shown. However, the good accessibility for maintenance purposes should be considered.

Die Mittel 12 können sowohl mechanisch als auch elektronisch gewählt werden. Daher besteht die Möglichkeit, die Module in die Maschinensteuerung mit aufzunehmen und diese z.B. aus der Warte der Papiermaschine zu überprüfen oder auch zu ändern.The means 12 can be selected both mechanically and electronically. Therefore, it is possible to include the modules in the machine control, and include these e.g. from the point of view of the paper machine to check or even change.

Über Regelungen kann z.B. die Schmiermittelzufuhr für verschiedene Produktionszustände (z.B. Bahnriss, Standardproduktion, Hochfahren der Maschine, Kriechgang, etc.) automatisiert werden.About regulations can e.g. the lubricant supply can be automated for different production conditions (e.g., web break, standard production, machine startup, crawl, etc.).

Um der Verschmutzung der Dichtleisten 4 entgegenzuwirken, kann ebenfalls eine Dosiereinheit für Chemikalien mit in die Leitungen 7 eingebunden werden. Hier kann unter Zugabe geeigneter Chemikalien eine Reinigung der Dichtleisten 4 durchgeführt werden. Die Zugabe der Chemikalien kann sowohl kontinuierlich als auch diskontinuierlich (bei bestimmten Maschinenzuständen) erfolgen.To counteract the contamination of the sealing strips 4, a metering unit for chemicals can also be integrated into the lines 7. Here, with the addition of suitable chemicals, cleaning of the sealing strips 4 can be carried out. The addition of the chemicals can be done both continuously and discontinuously (in certain machine conditions).

Dabei können die Chemikalien nicht nur zur Reinigung der Dichtleisten 4 eingesetzt werden, sondern auch um z.B. Ablagerungen in den Perforationen des Walzenmantels 2 oder in den Saugkästen 3 zu reduzieren und damit die Laufzeiterwartung der Saugwalze 1 zu erhöhen. Evtl. können sogar Chemikalien, welche die Retention der Papierbahn unterstützen, dabei eingesetzt werden.The chemicals can not only be used to clean the sealing strips 4, but also by e.g. To reduce deposits in the perforations of the roll shell 2 or in the suction boxes 3 and thus increase the life expectancy of the suction roll 1. Possibly. even chemicals that support the retention of the paper web can be used.

Die Vorrichtungen 5 können dabei in verschiedener Weise ausgeführt sein. In Figur 1 ist beispielhaft, wie bereits beschrieben, jeder der Dichtleisten 4 ein Spritzrohr 20 zugeordnet, welches anlaufseitig der jeweiligen Dichtleiste 4 angeordnet ist und Schmiermittel 6 auf jede der Dichtleisten 4 so aufträgt, dass das Schmiermittel 6 die Dichtleisten 4 anlaufseitig benetzt und durch die Drehung des Walzenmantels 2 auf die jeweilige Dichtfläche 24 der Dichtleisten 4 transportiert wird.The devices 5 can be designed in various ways. In FIG. 1 is exemplary, as already described, each of the sealing strips 4 associated with a spray tube 20, which is arranged on the start side of the respective sealing strip 4 and lubricant 6 on each of the sealing strips 4 so applied that the lubricant 6 wets the sealing strips 4 on the start side and by the rotation of the roll shell 2 is transported to the respective sealing surface 24 of the sealing strips 4.

Die Spritzrohre 20 erstrecken sich dabei normalerweise über die gesamte Länge der Dichtleisten 4 und weisen jeweils mehrere Auslässe auf, so dass über die Maschinenquerrichtung eine gleichmäßige Verteilung des Schmiermittels 6 möglich ist. Ausgehend von dieser Situation wäre es auch denkbar, jedem der Spritzrohre 20 mehrere Zuleitungen 7 zuzuordnen, so dass es möglich ist, eine zonal steuerbare Schmiermittelzufuhr zu realisieren. Auch mehrere kurze Spritzrohre 20 sind denkbar, die sich in ihrer Gesamtheit wiederum über die ganze Länge der Dichtleisten 4 erstrecken und ebenfalls mit separaten Zuleitungen 7 versehen sind.The spray tubes 20 extend normally over the entire length of the sealing strips 4 and each have a plurality of outlets, so that a uniform distribution of the lubricant 6 is possible over the machine transverse direction. Based on this situation, it would also be conceivable, each of the spray tubes 20 allocate several supply lines 7, so that it is possible to realize a zonal controllable lubricant supply. Also, a plurality of short spray tubes 20 are conceivable, which in turn extend in their entirety over the entire length of the sealing strips 4 and are also provided with separate leads 7.

In einer vereinfachten Form der Zuleitung des Schmiermittels 6 wäre es möglich, vor und/oder innerhalb der Saugwalze 1 die Leitungen 10 und/oder die Zuleitungen 7 in Form einer Einzelleitung auszubilden und erst vor den Dichtleisten 4 in einzelne Zuleitungen 7 aufzuteilen. Dies hat den Vorteil, dass die vorhandenen Walzendeckel 8 und Schmiermittelzuführungseinrichtung 11 mit nur einer Kupplung 9 weiter verwendet werden können. Allerdings würde diese Variante eine separate Manipulation der Schmiermittelmenge für jede einzelne Dichtleiste 4 nicht mehr zulassen.In a simplified form of the supply line of the lubricant 6, it would be possible to form the lines 10 and / or the supply lines 7 in the form of a single line before and / or within the suction roll 1 and divide them into individual supply lines 7 only before the sealing strips 4. This has the advantage that the existing roller cover 8 and lubricant supply device 11 can be used with only one clutch 9 on. However, this variant would no longer allow a separate manipulation of the amount of lubricant for each sealing strip 4.

In Figur 2 ist in einer stark schematisierten ausschnittsweisen Darstellung ein Teilbereich des in Figur 1 beschriebenen Systems dargestellt. Aus Gründen der Übersichtlichkeit ist die Krümmung des Walzenmantels 2 vernachlässigt worden.In FIG. 2 is in a highly schematized fragmentary representation of a portion of the in FIG. 1 described system shown. For reasons of clarity, the curvature of the roll mantle 2 has been neglected.

Wie bereits weiter oben beschrieben, sind mehrere Vakuumzonen vorhanden, welche jeweils durch Dichtleisten 4 voneinander getrennt und gegen den Innenraum der Saugwalze 1 abgedichtet sind. Jede der Dichtleisten 4 weist eine eigene Vorrichtung 5, im ersten Ausführungsbeispiel in Form von je einem Spritzrohr 20, auf, um eine optimale Schmierung der Dichtflächen 24 und Reinigung der Dichtleisten 4 zu gewährleisten. Die Spritzrohre 20 sind dabei im Bereich der Dichtleisten 4 jeweils zulaufseitig angeordnet und geben Schmiermittel 6 auf die anlaufseitige Oberfläche der Dichtleisten 4 und/oder auf die Innenseite des Walzenmantels 2 direkt vor den Dichtleisten 4 ab, so dass das Schmiermittel 6 durch die Drehung des Walzenmantels 2 auf die Dichtflächen 24 transportiert wird.As already described above, a plurality of vacuum zones are present, which are separated from each other by sealing strips 4 and sealed against the interior of the suction roll 1. Each of the sealing strips 4 has its own device 5, in the first embodiment in the form of a spray tube 20, in order to ensure optimum lubrication of the sealing surfaces 24 and cleaning of the sealing strips 4. The spray tubes 20 are arranged in each case inlet side in the region of the sealing strips 4 and give lubricant 6 on the start-side surface of the sealing strips 4 and / or on the inside of the roll shell 2 directly in front of the sealing strips 4, so that the lubricant 6 by the rotation of the roll shell 2 is transported to the sealing surfaces 24.

Insbesondere können die Dichtleisten 4 eine Anlauffase aufweisen, welche in Form einer Abschrägung der Dichtleisten 4 an einer der Bewegungsrichtung des Walzenmantels 2 entgegen gerichteten Seite ausgebildet ist und die Ausbildung eines Keils aus Schmiermittel 6 fördert, wodurch der Transport des Schmiermittels 6 auf die Dichtfläche 24 gefördert wird.In particular, the sealing strips 4 may have a starting chamfer, which is formed in the form of a chamfer of the sealing strips 4 on one of the direction of movement of the roll shell 2 opposite side and the formation of a Wedge of lubricant 6 promotes, whereby the transport of the lubricant 6 is conveyed to the sealing surface 24.

Die Positionierung der Spritzrohre 20 kann dabei beliebig an die geometrischen Gegebenheiten angepasst werden. Die Spritzrohre 20 können also beispielsweise in der Nähe der Dichtleisten 4 angeordnet sein, aber auch direkt an den Dichtleisten 4 anliegen. Die Positionierung kann auch pro Dichtleiste 4 differieren.The positioning of the spray tubes 20 can be arbitrarily adapted to the geometric conditions. The spray tubes 20 may thus be arranged, for example, in the vicinity of the sealing strips 4, but also bear directly against the sealing strips 4. The positioning can also differ per sealing strip 4.

Die jeweiligen Spritzrohre 20 sind, wie bereits beschrieben, mit einer Mehrzahl von Ausströmöffnungen 22 versehen, welche in gleichmäßigen oder ungleichmäßigen Abständen zueinander angeordnet sein können. Bevorzugt sind die Ausströmöffnungen 22 so angeordnet, dass die Dichtleisten 4 auf ihrer gesamten Länge in Maschinenquerrichtung gleichmäßig mit Schmiermittel 6 versorgt werden.The respective spray tubes 20 are, as already described, provided with a plurality of outflow openings 22, which may be arranged at uniform or non-uniform distances from each other. Preferably, the outflow openings 22 are arranged so that the sealing strips 4 are uniformly supplied with lubricant 6 over its entire length in the cross-machine direction.

Die Zuleitungen 7 und die weiteren Komponenten, die in Figur 2 nicht weiter dargestellt sind, können insbesondere wie in Figur 1 beschrieben ausgeführt und angeordnet sein.The supply lines 7 and the other components that are in FIG. 2 not further illustrated, in particular as in FIG. 1 be executed described and arranged.

In Figur 3 ist in gleicher Darstellung wie in Figur 2 ein zweites Ausführungsbeispiel des erfindungsgemäß ausgebildeten Systems dargestellt.In FIG. 3 is in the same representation as in FIG. 2 A second embodiment of the invention designed according to the system shown.

In diesem Ausführungsbeispiel sind die Vorrichtungen 5 in die Dichtleisten 4 integriert, so dass kein separates Spritzrohr 20 zu jeder Dichtleiste 4 angeordnet werden muss.In this embodiment, the devices 5 are integrated into the sealing strips 4, so that no separate spray tube 20 has to be arranged to each sealing strip 4.

In jeder der Dichtleisten 4 ist dabei ein Verteilerkanal 21 ausgebildet, der wiederum mit Ausströmöffnungen 22 über Verbindungskanäle 23 verbunden ist. Die Ausströmöffnungen 22 sind dabei in einer Anlaufseite 24 der Dichtleisten 4 ausgebildet, damit das Schmiermittel 6 vor die Dichtleisten 4 gebracht und durch den sich über die Dichtleisten 4 hinwegdrehenden Walzenmantel 2 zur Schmierung zwischen die beiden Reibungspartner Walzenmantel 2 und Dichtfläche 24 der Dichtleisten 4 eingeschleppt werden kann.In each case, the sealing strips 4, a distribution channel 21 is formed, which in turn is connected to discharge openings 22 via connecting channels 23. The outflow openings 22 are formed in a start-up side 24 of the sealing strips 4, so that the lubricant 6 brought before the sealing strips 4 and introduced by the over the sealing strips 4 away rotating roll shell 2 for lubrication between the two friction partner roll shell 2 and sealing surface 24 of the sealing strips 4 can.

Auch hier ist die Ausbildung der Anlauffase an der der Bewegungsrichtung des Walzenmantels 2 entgegen gerichteten Seite der Dichtleisten 4 für die Ausbildung des Keils aus Schmiermittel 6 förderlich.Again, the formation of the chamfer on the direction of movement of the roll shell 2 opposite side of the sealing strips 4 for the formation of the wedge of lubricant 6 conducive.

Ähnlich wie bei den weiter oben beschriebenen Spritzrohren 20 können die Ausströmöffnungen 22 gleichmäßig oder ungleichmäßig über die Länge der Dichtleisten 4 verteilt sein.Similar to the spray tubes 20 described above, the outflow openings 22 may be distributed uniformly or non-uniformly over the length of the sealing strips 4.

Auch hier ist pro Dichtleiste 4 eine separate Zuleitung 7 vorgesehen, welche Schmiermittel zur Dichtleiste 4 leitet. Mehrere Zuleitungen 7 pro Dichtleiste 4 sind ebenfalls denkbar und könnten eine zonale Schmiermittelzufuhr erlauben, welche beispielsweise in den Randbereichen und in der Walzenmitte eine unterschiedlich starke Schmiermittelausbringung ermöglichen würde.Again, a separate supply line 7 is provided per sealing strip 4, which directs lubricant to the sealing strip 4. Several supply lines 7 per sealing strip 4 are also conceivable and could allow a zonal lubricant supply, which would allow, for example, in the edge regions and in the middle of the roll a different levels of lubricant application.

Die Erfindung ist nicht auf die dargestellten Ausführungsbeispiele begrenzt. Insbesondere ist es möglich, die einzelnen Merkmale der Erfindung miteinander zu kombinieren. So ist es beispielsweise denkbar und sinnvoll, eine oder mehrere der Dichtleisten 4 mit Spritzrohren 20 zu versehen und eine oder mehrere Dichtleisten 4 mit integrierten Verteilerkanälen 21 für Schmierstoff 6 auszustatten, was unterschiedlich beengten Einbaupositionen Rechnung tragen kann.The invention is not limited to the illustrated embodiments. In particular, it is possible to combine the individual features of the invention. Thus, it is conceivable and useful, for example, to provide one or more of the sealing strips 4 with spray tubes 20 and to equip one or more sealing strips 4 with integrated distribution channels 21 for lubricant 6, which can accommodate different cramped installation positions.

Claims (14)

  1. Suction roll (1) for a machine for producing or processing a fibrous web, such as a paper, tissue or board machine, comprising a moving roll shell (2) and at least one suction box (3) adjoining the moving roll shell (2) and a system for sealing off the at least one suction box (3) adjoining the moving roll shell (2) of the suction roll (1), the system comprising at least two seals (4), which rest in a sealing manner on the moving roll shell (2) via a respective sealing face (24) and, in the area of the sealing faces (24) of the at least two seals (4) and/or on the at least two seals (4) and/or in the at least two seals (4) in each case at least one device (5) for discharging a lubricant (6) wetting the at least two seals (4) is provided, which at least one device (5) has a feed line (7) connected thereto, through which the lubricant (6) can be fed, and a separate feed line (7) being provided for each of the devices (5) of the at least two seals (4), and the devices (5) for discharging the lubricant (6) respectively being arranged such that the lubricant (6) can be applied to the at least two seals (4) on the ingoing side and can be transported to the sealing faces (24) by the rotation of the roll shell (2), characterized in that
    means (12) are provided for the open-loop and/or closed-loop control of the lubricant supply to each of the seals (4), via which the feeding of lubricant to each of the seals (4) can be controlled and/or regulated separately.
  2. Suction roll (1) according to Claim 1,
    characterized in that
    the devices (5) for discharging the lubricant (6) are constructed in the form of spray pipes (20), which are each arranged on the ingoing side of the at least two seals (4).
  3. Suction roll (1) according to Claim 2,
    characterized in that
    the spray pipes (20) extend substantially parallel to the seals (4) and substantially over the entire length of the seals (4) in the cross-machine direction (CD).
  4. Suction roll (1) according to Claim 1,
    characterized in that
    the devices (5) for discharging the lubricant (6) are formed so as to be integrated into the at least two seals (4), wherein in each of the seals (4) there is provided at least one distributor channel (21) which has outlet openings (22) which are designed to open out of the seals (4) on the ingoing side of the latter.
  5. Suction roll (1) according to Claim 4,
    characterized in that
    the distributor channel (21) extends substantially over the entire length of the said roll in the cross-machine direction (CD).
  6. Suction roll (1) according to Claim 4 or 5,
    characterized in that
    the distributor channel (21) is respectively formed by a cut out of the seals (4) or a bore in the seals (4).
  7. Suction roll (1) according to Claim 5 or 6, characterized in that
    the distributor channel (21) is connected to the outlet openings (22) via connecting channels (23).
  8. Suction roll (1) according to one of Claims 4 to 7,
    characterized in that
    the distributor channel (21) has at least one feed line (7) per seal (4).
  9. Suction roll (1) according to one of Claims 1 to 8,
    characterized in that
    the feed lines (7) extend from the devices (5) in the area of and/or on the and/or in the seals (4) in an internal space in the suction roll (1) as far as a roll cover (8) that closes off the suction roll (1)
  10. Suction roll (1) according to Claim 9,
    characterized in that
    couplings (9) to which the feed lines (7) can be connected are provided in the roll cover (8).
  11. Suction roll (1) according to Claim 10,
    characterized in that
    lines (10) which are connected to a lubricant feed apparatus (11) can be connected to the couplings (9).
  12. Suction roll (1) according to Claim 11,
    characterized in that
    the lubricant feed apparatus (11) is arranged outside the suction roll (1).
  13. Suction roll (1) according to one of the preceding claims,
    characterized in that
    the means (12) for the open-loop and/or closed-loop control of the lubricant feed are arranged inside or outside the suction roll (1).
  14. Suction roll (1) according to one of the preceding claims,
    characterized in that
    the system can be connected to a process control system of a machine for producing or processing a fibrous web.
EP13724198.0A 2012-05-09 2013-05-08 Seals with integrated lubrication water feeding system Active EP2847381B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE201210207692 DE102012207692A1 (en) 2012-05-09 2012-05-09 System for sealing moved roller drum of suction roll of bordering suction box in machine for manufacturing e.g. paper, has sealing strips abutting sealingly against moving roll shell, where each sealing strip is provided with separate line
DE201210213544 DE102012213544A1 (en) 2012-08-01 2012-08-01 System for sealing suction box for use with roll sleeve of suction roller in machine for manufacturing or processing e.g. paper, has device for discharging lubricant such that lubricant is applied on approach-side to sealing strips
PCT/EP2013/059590 WO2013167656A1 (en) 2012-05-09 2013-05-08 Sealing strip with an integrated lubricating water supply system

Publications (2)

Publication Number Publication Date
EP2847381A1 EP2847381A1 (en) 2015-03-18
EP2847381B1 true EP2847381B1 (en) 2016-08-03

Family

ID=48470925

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13724198.0A Active EP2847381B1 (en) 2012-05-09 2013-05-08 Seals with integrated lubrication water feeding system

Country Status (4)

Country Link
EP (1) EP2847381B1 (en)
CN (1) CN104246067B (en)
BR (1) BR112014027920B1 (en)
WO (1) WO2013167656A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10179973B2 (en) * 2014-09-15 2019-01-15 Rochling Leripa Papertech Gmbh & Co. Kg Sealing-strip holder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114150523A (en) * 2021-12-23 2022-03-08 无锡裕力机械有限公司 Vacuum water-absorbing couch roll with self-wetting isolation plate

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB778779A (en) * 1954-02-04 1957-07-10 Bowaters Dev & Res Ltd Improvements in or relating to suction apparatus which is applicable to paper makingand like machines
DE1005825B (en) * 1954-02-04 1957-04-04 Bowaters Dev And Res Ltd Suction device
US5314585A (en) * 1993-05-10 1994-05-24 Champion International Corporation Low shear Uhle box
DE10214134A1 (en) 2002-03-28 2003-10-09 Voith Paper Patent Gmbh seal means
DE10322328A1 (en) * 2003-05-17 2004-12-23 Voith Paper Patent Gmbh roll sealing
DE10336217A1 (en) * 2003-08-07 2005-03-03 Voith Paper Patent Gmbh Suction or blowing device in a machine for producing a fibrous web

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10179973B2 (en) * 2014-09-15 2019-01-15 Rochling Leripa Papertech Gmbh & Co. Kg Sealing-strip holder
US10184214B2 (en) * 2014-09-15 2019-01-22 Rochling Leripa Papertech Gmbh & Co. Kg Sealing strip systems for suction rolls

Also Published As

Publication number Publication date
BR112014027920A2 (en) 2017-06-27
EP2847381A1 (en) 2015-03-18
CN104246067A (en) 2014-12-24
WO2013167656A1 (en) 2013-11-14
BR112014027920B1 (en) 2021-07-06
CN104246067B (en) 2017-05-03

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