EP1451406A1 - Rouleau de presse - Google Patents

Rouleau de presse

Info

Publication number
EP1451406A1
EP1451406A1 EP02803798A EP02803798A EP1451406A1 EP 1451406 A1 EP1451406 A1 EP 1451406A1 EP 02803798 A EP02803798 A EP 02803798A EP 02803798 A EP02803798 A EP 02803798A EP 1451406 A1 EP1451406 A1 EP 1451406A1
Authority
EP
European Patent Office
Prior art keywords
press
roll
support
press roll
pressure
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.)
Withdrawn
Application number
EP02803798A
Other languages
German (de)
English (en)
Inventor
Uwe Matuschczyk
Dirk Thomas
Jens Müller
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 Paper 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
Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1451406A1 publication Critical patent/EP1451406A1/fr
Withdrawn legal-status Critical Current

Links

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
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/02—Rolls; Their bearings
    • D21G1/0206—Controlled deflection rolls
    • D21G1/0213—Controlled deflection rolls with deflection compensation means acting between the roller shell and its supporting member
    • D21G1/022—Controlled deflection rolls with deflection compensation means acting between the roller shell and its supporting member the means using fluid pressure

Definitions

  • the invention relates to a press roll for forming a press nip with another press roll, consisting of a rotating roll jacket, a roll axis and a support or support device which is connected to the roll axis and supports the roll jacket, and a method for changing the support device or at least one Part of it.
  • the object of the invention is therefore to simplify the replacement of the support device or at least a part thereof in the case of press rolls.
  • the object was achieved in that at least one support or pressure shoe connected to the support or support device is arranged to be removable from the press roll through an end wall of the press roll.
  • the support or pressure shoe can be removed from the press roll easily and without great effort, without the entire press roll having to be taken apart.
  • the support device can be pivotable together with the roll axis or for the support device to be pivotable on the roll axis.
  • the invention offers particular advantages in the case of press rolls whose support device comprises a support shoe which can be pressed against the roll shell, the contact pressure preferably being effected hydraulically.
  • the pressure fluid is guided over the roller axis to the respective support device, in particular if several support devices are arranged axially next to one another in the press roller.
  • roller shell is flexible and the support shoe has a concave contact surface to form an extended press nip has.
  • the support device can be pivoted at least at an angle between 90 ° and 270 °, preferably by approximately 180 °.
  • the support device should be pivotable at least at an angle between 90 ° and -90 °, preferably between 45 ° and -45 °.
  • At least one supply line for supplying a hydraulic fluid is provided for the pressure piston for pressing the pressure shoe against the inner wall of the roll shell.
  • a plurality of pressure pistons which can be actuated individually or together can also be present in the direction of the roller axis. So both have the middle zones as well as the edge zones of the pressure shoe an associated unit for applying the required pressure.
  • the supply lines can be specially designed according to the invention.
  • the supply lines are lines for a hydraulic fluid, in particular a hydraulic oil, i. H.
  • the supply lines are pressure lines.
  • Such supply lines, in particular the hydraulic lines each have a separation point.
  • Quick couplings are preferably suitable as separation points.
  • the separation points are advantageously arranged below the roll shell in the vicinity of an end cover of the press roll. This ensures good accessibility.
  • the separation points are designed so that the inner pipe parts opposite the outer, i.e. H. are arranged closer to the roll shell, movable, that is, raised or rotated.
  • the rotatability is ensured, for example, by rotating couplings. This also ensures the tightness at the connection point between the outer and the inner line parts.
  • the supply lines run through the interior of a fixed axis into the interior of the press roll.
  • the supply lines also include lubrication lines that are exclusively under hydrostatic pressure, or they are measuring lines that belong to a hydraulic system and measure the pressure in the pressure lines for applying the contact pressure for the pressure shoe. Lines for lubricating oil are also provided.
  • the supply lines are flexible, at least in the area in which the carrying or supporting device executes a rotational movement or a translational movement, for example as a hose or as a cable or as another flexible line, so that they can follow the movement of the supporting device and the supporting device and especially the support shoe always with the required medium, for example, the pressure oil are supplied.
  • the pressure or support shoe has a length of, for example, 120 mm, a minimum stroke of more than 7 mm, but preferably of more than 10 to 15 mm, is provided. If the support shoe 16 has a length of 270 mm, a minimum stroke of more than 10 mm, but preferably of more than 15 to 20 mm is provided; if the support shoe 16 has a length of more than 300 mm, a minimum stroke of more than 20 mm is provided. These dimensions apply in the case of drying a paper web for graphic paper, but also generally for white and brown paper.
  • a press roll which serves as a counter roll which has a diameter of more than 1000 mm, preferably a diameter in the range between 1000 and 1600 mm, while the support shoe has a length of more than 120 mm.
  • the press roller When used exclusively for tissue webs, the press roller has a diameter in the range between 2500 and 5500 mm, for example, with the support shoe having a length of less than 150 mm.
  • the removal of the pressure shoe from the press roller is facilitated in that the distance between the press rollers is increased. This is done, for example, by increasing the distance between the bearing walls or the bearing housing. Either the press roll containing the pressure shoe or the press roll serving as the counter-pressure roll is displaced from the other press roll by a fixed distance. The movement is preferably carried out by means of one or more hydraulic cylinders.
  • the end cover ie the tensioning disk
  • the end cover can also be removed.
  • the distance between the press roller and the press roller is increased.
  • supply lines may also have to be separated, which is possible if coupling elements which can be separated according to the invention are arranged in the supply lines.
  • the support device with the pressure shoe is then rotated out of the operating position by a fixed angle until the pressure shoe can be removed through an end opening in the press roller and through an then produced opening or a recess in the bearing wall in which the press roller is mounted , Or the front cover is moved as a whole to the side or removed.
  • the support shoe is then moved out or pulled out in the direction of the longitudinal axis of the press roll.
  • Reasons for the rapid removal of a support shoe can be its wear or an adaptation of the geometry of the support shoe to the production and quality requirements, e.g. B. for paper types exist.
  • the specific volume is a decisive quality feature that requires gentle dewatering, for which purpose, for example, a long support shoe with an adapted pressure profile is used.
  • FIG. 1 a schematic cross section through a press roll
  • FIG. 2 the cross section through a press roll of another design
  • FIG. 3 a longitudinal section through a press roll
  • FIG. 4 a cross section through the press roll according to FIG. 3
  • FIG. 5 a cross section through a press roll with a pressure shoe, which is arranged below a press roller serving as a counter-pressure roller,
  • Figure 6 an enlarged section of Figure 5
  • Figures 7 to 10 representations of the removal of a press roller in different positions for the removal of the pressure shoe
  • a press roll 1 forms, with another press roll 2, a press nip for treating a material web 30, as can be found in particular in machines for producing a paper, cardboard, tissue or other fibrous web 7. While the smoothing of the fibrous web 7 runs solely through the press nip, at least one endless circulating belt for absorbing the squeezed water is guided through the press nip during the dewatering of the fibrous web 7.
  • the press roll 1 has a flexible roll cover 3 and a roll axis 4 with a support device 5, which is responsible for pressing the roll cover 3 towards the other press roll 2.
  • the support device 5 has a support shoe 6, which has a concave contact surface to form an extended press nip.
  • the press roll 1 is arranged above the other press roll 2 and the support device 5 is firmly connected to the roll axis 4. Since the accessibility is usually particularly limited in this position, the roller axis 4 is with the Support device 5 can be swiveled by up to 270 °. If the support device 5 or a part thereof, such as the support shoe 6, needs to be changed, the support device 5 can be pivoted from the working position into a change position in which the accessibility is significantly better. The change position depends on the type of machine unit and the special design.
  • FIG. 2 shows a press or smoothing device in which the press roll 1 is arranged under the other press roll 2.
  • the support device 5 with its support shoe 6 is pivotally mounted on the roller axis 4 via a ring 8, so that the roller axis 4 can be made stationary.
  • the support device 5 is already in a changing position at approximately -45 °.
  • both press rolls 1, 2 can also have a pivotable support device 5.
  • the support device 5 comprises a pressure element 11, in which a plurality of pressure areas 11 are provided for pressing the support shoe 6 against the roll shell 3 and thus against the press roll 2 serving as a counter-pressure roll.
  • Relief elements 12, 13 are arranged in the edge zone of the pressure shoe 6, which have a smaller pressing surface than the pressure areas 11 with the support shoe 6, so that only a slight pressure is built up in the edge area thereof.
  • the pressure areas 11 and the Relief areas 12, 13 are supplied together with pressure oil via a line 14.
  • a detachable connection 140 is arranged in the line 14, which makes it possible, when the support device 5 and the support or pressure shoe 6 connected to it are pivoted or lifted, to hold a support body 15 accommodating the support device 5 in place while the support device 5 is moving becomes.
  • the line 14 is divided into a number of sub-lines 141, 142 and 143, each of which is used to supply the pressure areas 11 and the relief areas 12, 13 with pressure oil.
  • the pressure areas 11 are connected to one another via connecting lines 144. If no pressure is exerted on the support shoe 6 by means of the hydraulic system of the pressure areas 11 and the relief areas 12, 13, this is pulled back into a position lifted off from the roller shell 3 by means of return springs 17, 18 designed as tension springs.
  • the line 14, like other supply lines 19, 20, runs through a fixed axis 21.
  • the supply lines 19, 20 are each equipped with quick-release connections 190 and 200, respectively.
  • the roller shell 3 is clamped in lateral clamping elements 22, 23, which are rotatably mounted together with the roller shell 3 in ball bearings 24, 25.
  • the clamping elements 22, 23 are each located in front of the fixed end covers 26, 27.
  • the interior of the press roll 1 is sealed off from the outside by seals 28, 29.
  • the supply line 19 is preferably used to supply lubricating and cooling oil, which is only under hydrostatic pressure.
  • the lubricating and cooling oil is supplied to a distributor 30 (FIG. 4) within the press roller 1. From this, the oil is applied to the inner wall of the roll shell 3, the contact zone between the press rolls 1 and 2 in particular having to be cooled so that the oil is guided there in particular.
  • Via the supply line 20 the oil is passed out of the press roller 1 so that it can be cooled again in a cooling device (not shown here).
  • a filter can also be introduced into the oil circuit.
  • the roller jacket 3 is held on the press roller 1 in a shape having a circular cross section by means of jacket guide strips 31 connected to the support body 15.
  • a press roller 40 with a pressure or support shoe 41 is arranged below a press roller 42, a material web 43, for example a paper or tissue web, running between the press rollers 40, 42.
  • the pressure shoe 41 is pressed against the material web 43 via a pressing element 44.
  • the pressing element 44 is raised by means of a fluid, for example a hydraulic oil supplied via a line 14, in order to press the pressure shoe 41 against the material web 43.
  • the pressure shoe 41 is interchangeably arranged in a receptacle 45 movable with it in the support body 15. The supply of the hydraulic oil is ensured via one of the connecting lines 144.
  • a lubricating oil distributor 45 applies the lubricating oil, which is supplied via the line 14, to the inner wall of the roll shell 3.
  • the lubricating oil runs off on its rear flank, as seen in the direction of rotation, so that it is collected in an oil collecting container 46. From there, after it has also been filtered in particular, it flows onto the inner wall via a siphon 47 in the lower region of the interior.
  • the oil reservoir 46 and the siphon 47 are connected to the support body 15.
  • a press roller 11 arranged in a bearing housing with a bearing wall 10 is arranged with a support or support device 15 above a press roller 33 which serves as a counter-pressure roller and which is mounted in a bearing wall 35.
  • the bearing wall 35 stands on a floor 36.
  • the support device 15 has a support shoe 16 which in the operating position Material web presses against the press roller 33. The pressure or support shoe can be pulled upwards to such an extent that the support device 15 can be pivoted past the press roller 33.
  • the stroke A required for this, which the support shoe 16 travels upwards in the direction of an arrow B (FIG. 8), is chosen so large that the necessary distance from the press roller 33 is established.
  • the movement of the pressure shoe 16 is achieved, for example, by the return springs 17, 18.
  • a hydraulic device (not shown here) is preferably additionally provided on the bearing wall 10, which additionally raises the bearing wall 10 by a distance H (FIG. 9).
  • the carrying device 15 is rotated upwards together with the pressure shoe 16 by an angle ⁇ (FIG. 10).
  • the bearing housing or the bearing wall 10 for the press roller 11 is designed such that it has a recess at this angle through which the pressure shoe 16 can be pulled out from the end of the press roller 11 parallel to the longitudinal axis of the press roller 11.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Paper (AREA)
  • Press Drives And Press Lines (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

L'invention concerne un rouleau de presse (1) pour former une fente de pression avec un autre rouleau de presse (2) comprenant une enveloppe de rouleau (3) rotative, un axe de rouleau (4) et un dispositif d'appui (5), qui est relié à l'axe de rouleau (4) et qui supporte l'enveloppe de rouleau. L'invention concerne également un procédé de remplacement dudit dispositif d'appui (5). Ledit remplacement est facilité par le fait que ledit dispositif d'appui (5) est disposé de manière pivotante à l'intérieur de ladite enveloppe de rouleau (3).
EP02803798A 2001-11-29 2002-11-27 Rouleau de presse Withdrawn EP1451406A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10158717 2001-11-29
DE10158717A DE10158717A1 (de) 2001-11-29 2001-11-29 Presswalze
PCT/EP2002/013333 WO2003046278A1 (fr) 2001-11-29 2002-11-27 Rouleau de presse

Publications (1)

Publication Number Publication Date
EP1451406A1 true EP1451406A1 (fr) 2004-09-01

Family

ID=7707473

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02803798A Withdrawn EP1451406A1 (fr) 2001-11-29 2002-11-27 Rouleau de presse

Country Status (5)

Country Link
US (1) US20040216624A1 (fr)
EP (1) EP1451406A1 (fr)
JP (1) JP2005510640A (fr)
DE (1) DE10158717A1 (fr)
WO (1) WO2003046278A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008002112A1 (de) * 2008-05-30 2009-12-03 Voith Patent Gmbh Biegeeinstellwalze
DE102009055248A1 (de) * 2009-12-23 2011-06-30 Voith Patent GmbH, 89522 Vorrichtung und Verfahren zum Überwachen einer Pressvorrichtung
DE202013101445U1 (de) * 2012-05-21 2013-04-24 Metso Paper, Inc. Breitnip- oder Schuhwalze
US11006011B2 (en) 2017-05-01 2021-05-11 Hewlett-Packard Development Company, L.P. Conditioner modules with calender rollers

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3205664A1 (de) * 1982-02-17 1983-08-25 J.M. Voith Gmbh, 7920 Heidenheim Presse zur entwaesserung nasser faserstoffbahnen
DE3317456C2 (de) * 1983-04-02 1993-12-02 Voith Gmbh J M Bandpreßeinheit zum Entwässern von Faserstoffbahnen
US4973384A (en) * 1989-06-23 1990-11-27 Beloit Corporation Heated extended nip press apparatus
FI98844C (fi) * 1991-12-23 1997-08-25 Valmet Paper Machinery Inc Paperikoneen puristinosa, etenkin painopaperilaaduille
DE19622018A1 (de) * 1996-05-31 1997-12-04 Voith Sulzer Papiermasch Gmbh Schuhpresse
FI990122A (fi) * 1999-01-22 2000-07-23 Valmet Karlstad Ab Kenkätela
DE19962706A1 (de) * 1999-12-23 2001-06-28 Voith Paper Patent Gmbh Pressenpartie

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03046278A1 *

Also Published As

Publication number Publication date
JP2005510640A (ja) 2005-04-21
WO2003046278A1 (fr) 2003-06-05
US20040216624A1 (en) 2004-11-04
WO2003046278A8 (fr) 2005-03-17
DE10158717A1 (de) 2003-06-12

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