EP2847381B1 - Dichtleiste mit integriertem schmierwasserzuführungssystem - Google Patents

Dichtleiste mit integriertem schmierwasserzuführungssystem 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
Authority
EP
European Patent Office
Prior art keywords
seals
lubricant
roll
suction roll
suction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13724198.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2847381A1 (de
Inventor
Marc Erkelenz
Jochen Honold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE201210207692 external-priority patent/DE102012207692A1/de
Priority claimed from DE201210213544 external-priority patent/DE102012213544A1/de
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2847381A1 publication Critical patent/EP2847381A1/de
Application granted granted Critical
Publication of EP2847381B1 publication Critical patent/EP2847381B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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.

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  • Paper (AREA)
EP13724198.0A 2012-05-09 2013-05-08 Dichtleiste mit integriertem schmierwasserzuführungssystem Active EP2847381B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE201210207692 DE102012207692A1 (de) 2012-05-09 2012-05-09 Dichtleistensystem
DE201210213544 DE102012213544A1 (de) 2012-08-01 2012-08-01 Dichtleistensystem
PCT/EP2013/059590 WO2013167656A1 (de) 2012-05-09 2013-05-08 Dichtleiste mit integriertem schmierwasserzuführungssystem

Publications (2)

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

Family

ID=48470925

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13724198.0A Active EP2847381B1 (de) 2012-05-09 2013-05-08 Dichtleiste mit integriertem schmierwasserzuführungssystem

Country Status (4)

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

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 (zh) * 2021-12-23 2022-03-08 无锡裕力机械有限公司 一种配备自润湿隔离板的真空吸水伏辊

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1005825B (de) * 1954-02-04 1957-04-04 Bowaters Dev And Res Ltd Saugvorrichtung
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
US5314585A (en) * 1993-05-10 1994-05-24 Champion International Corporation Low shear Uhle box
DE10214134A1 (de) 2002-03-28 2003-10-09 Voith Paper Patent Gmbh Dichtungseinrichtung
DE10322328A1 (de) * 2003-05-17 2004-12-23 Voith Paper Patent Gmbh Walzendichtung
DE10336217A1 (de) * 2003-08-07 2005-03-03 Voith Paper Patent Gmbh Saug- oder Blaseinrichtung in einer Maschine zur Herstellung einer Faserstoffbahn

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
CN104246067A (zh) 2014-12-24
BR112014027920A2 (pt) 2017-06-27
BR112014027920B1 (pt) 2021-07-06
EP2847381A1 (de) 2015-03-18
WO2013167656A1 (de) 2013-11-14
CN104246067B (zh) 2017-05-03

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