EP1081276A2 - Système de séchage - Google Patents

Système de séchage Download PDF

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Publication number
EP1081276A2
EP1081276A2 EP00111321A EP00111321A EP1081276A2 EP 1081276 A2 EP1081276 A2 EP 1081276A2 EP 00111321 A EP00111321 A EP 00111321A EP 00111321 A EP00111321 A EP 00111321A EP 1081276 A2 EP1081276 A2 EP 1081276A2
Authority
EP
European Patent Office
Prior art keywords
shoe
drying device
roller
gap
web
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Withdrawn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
EP00111321A
Other languages
German (de)
English (en)
Other versions
EP1081276A3 (fr
Inventor
Andreas Meschenmoser
Joachim Henssler
Walter Dr. Holzer
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 EP1081276A2 publication Critical patent/EP1081276A2/fr
Publication of EP1081276A3 publication Critical patent/EP1081276A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/006—Calenders; Smoothing apparatus with extended nips
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/101—Supporting materials without tension, e.g. on or between foraminous belts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/105—Drying webs by contact with heated surfaces other than rollers or drums

Definitions

  • the invention relates to a drying device for a machine Production and / or treatment of a material web, in particular paper or cardboard web, in which the material web together with at least a sieve through a gap extended in the direction of web travel is guided between a rotating one supported on a shoe flexible endless belt and a counter surface is formed. It affects further a smoothing device specified in the preamble of claim 21 Art.
  • a drying device of the type mentioned at the outset is, for example known from DE 197 23 163 A1. It is also known to dry between two metal bands, one of which is heated and the other is chilled and between those starting from the heated Tape to the cooled tape, the paper web, a fine sieve and a coarse sieve are passed through. Arrangements are also known where the paper web and the screens are cooled or heated Cylinders are guided. A metal band is wrapped around the cylinder, that is heated with the cylinder cooled and with the cylinder heated is cooled. The paper web lies against the hot surface. Between the paper web and the cooled surface is at least again a sieve, usually a fine sieve lying against the paper web and a coarse sieve provided against the cooled surface is provided.
  • the pressure during the drying process by means of a pressurized gaseous or liquid cooling and / or Heating medium over an airtight surface such as in particular Metal tape on the sandwich formed between the two surfaces Transfer paper, fine sieve and coarse sieve (DE-A-26 57 041, Fig. 10; DE-A-32 03 571, Fig. 11; DE-A-35 32 853, Fig. 12).
  • a pressurized gaseous or liquid cooling and / or Heating medium over an airtight surface such as in particular Metal tape on the sandwich formed between the two surfaces Transfer paper, fine sieve and coarse sieve (DE-A-26 57 041, Fig. 10; DE-A-32 03 571, Fig. 11; DE-A-35 32 853, Fig. 12).
  • the pressurized liquid now requires in terms of Seal and in view of unbalanced forces very complex constructions. A change in the applied structural pressure is only possible through several pressure chambers, which again the constructive Increase effort.
  • the aim of the invention is to provide a drying device of the type mentioned Way of creating one during the drying process continuous course of the structural pressure in the web running direction over a significantly longer distance is possible.
  • one should appropriate smoothing device can be created.
  • this object is achieved according to the invention solved in that the shoe is segmented in the direction of web travel and that the interconnected shoe segments at least partially can be acted on separately.
  • the shoe is mechanically pressed against the counter surface to the Apply structural pressure to the material web. Over the whole the shoe segments across a jump-free occurs during operation preferably adjustable pressure profile.
  • the load on the segments can for example at the connection points and / or in between hydraulic stamping.
  • the shoe segments at least partially articulated together.
  • the segments can fall at the hinge points and / or in between be applied accordingly.
  • the shoe segments are at least partially through areas of a respective material weakening of the shoe. So the shoe on its side facing away from the gap Advantageously, several consecutive in the web running direction Have incisions.
  • Drying devices are subject to an appropriate application the shoe segments different pressure profiles in the gap adjustable.
  • the pressure in the gap can also be caused by two opposite one another Shoes are produced, at least one of the two shoes being segmented is.
  • the surface of the flexible endless belt and / or the counter surface to support pressure equalization in the area the gap outlet is structured accordingly, for example grooved, is.
  • the drying device is the all-round flexible endless belt formed by the flexible roll shell of a shoe roll.
  • the counter surface can in particular by a counter roller, for example an internally supported roller, in particular a bending compensation roller, is formed his.
  • the segmented shoe can fall from a cooling medium, for example Cooling water, be flowed through.
  • a cooling medium for example Cooling water
  • the flexible endless belt is advantageously at least partially on the inside by lubricating the area between the shoe and the endless belt serving lubricants, especially lubricating oil, cooled.
  • the flexible endless belt can be used to improve heat transfer in particular be formed by a steel band.
  • the drying device is the flexible one that runs over the shoe Endless belt heated and the counter surface cooled.
  • both are flexible Endless belt as well as the counter surface each by a steel belt formed
  • the segmented shoe preferably a non-segmented Opposite shoe on which the steel band forming the counter surface is supported.
  • the two steel strips are preferably each around two floating deflection rollers, preferably bending compensation rollers, guided and driven by this.
  • the smoothing device according to the invention is characterized in that the heated roller is a shoe roller, the flexible roller shell in the Gap area supported by a shoe segmented in the direction of web travel is, the interconnected shoe segments at least can be partially charged separately. Otherwise, this smoothing device have the same structure as the drying device.
  • Figures 3 to 5 each show a purely schematic representation Drying device 10 of a machine for manufacturing and / or treatment a material web 12, which is in particular a Paper or cardboard web can act.
  • the material web 12 is together with one that touches the web 12 finely structured sieve 14 and a roughly structured sieve 16 an extended in the web running direction L gap S, which between a circumferential flexible endless belt supported on a shoe 18 20 and a counter surface 22 is formed.
  • the shoe 18 is segmented in the web running direction L, the individual Shoe segments 18 '(see also FIGS. 1 and 2) connected to one another and can be acted upon at least partially separately.
  • Figures 1 and 2 show two possible embodiments of the segmented Shoe 18.
  • the shoe segments 18 ' be articulated together.
  • the Shoe 18 in the embodiments according to Figures 2a and 2b its side facing away from the gap S a plurality of successive ones in the web running direction L, incisions forming the respective material weakening 26 on.
  • the incisions can be made 26, for example, in an area referring to a “normal profile” subsequent "relief" area may be provided.
  • the shoe 18 is thus mechanically opposed to a shoe press the counter surface 22 is pressed to apply the structural pressure to the material web 12 exercise.
  • the shoe 18 in connected segments 18 ' is subdivided, results in the web running direction L over a relative a continuous course of structural pressure over a long distance.
  • This continuous course can become clear, for example extend more than about 300 mm.
  • the profile of the pressing forces can during operation is monitored by pressure sensors and controlled in such a way that especially in the exit from the pressure range the vapor pressure is small enough to destroy the paper due to it still in the paper to prevent contained expanding steam. You can Force sensors in the shoe 18 and / or pressure sensors and force sensors within the rotating flexible endless belt 20 or in the counter roll be arranged.
  • the structural pressure can, as described below by way of example with reference to FIG. 5, also applied by two opposing shoes , at least one of which is segmented.
  • the pressure compensation when leaving the pressure area or gap S. can be formed by appropriately shaped or structured surfaces of the circumferential flexible endless belt 20 and / or the counter surface 22 be supported.
  • the surfaces in question can be grooved his.
  • the pressure profile of the shoe 18 can with the machine running suitable paper properties such as the modulus of elasticity and / or the thickness can be measured online.
  • the modulus of elasticity can, for example be determined with a suitable ultrasound device. Shows there is an increase in the thickness or a decrease in the stiffness of the paper can reduce the pressure profile at the end of the shoe 18 for so long and / or modified until the desired optimum is reached.
  • Automatic control algorithms can be defined. So can for example, based on the known and measured parameters and the pressure profile with a simulation of the drying process and determine the best possible change in the pressure profile. After that the pressure profile can be changed automatically.
  • the sieves 14, 16 and the material web can be made in a manner known per se 12 be flushed with steam D before entering gap S, thereby the extremely poorly heat-conducting air from the paper and the Seven is ousted. Heating is alternatively or additionally possible with other suitable means.
  • one Drying device 10 is the rotating flexible endless belt 20 in each case through the flexible roll shell of a shoe roll 28 and the counter surface 22 formed by a counter roller 30.
  • the in the direction of web travel L measured length of the gap S can for example be in a range from about 500 mm to about 1000 mm.
  • the diameter of the rollers 28, 30, for example, in a range of approximately 1800 mm lie.
  • the counter roller 30 can in particular be supported by an inside Roll, preferably a bending compensation roller, be formed (see. In particular Figure 3).
  • the shoe roller 28 is cooled and the counter roll 30 is heated.
  • the segmented shoe 18 of a cooling medium K for example cooling water, flows through.
  • the frictional heat between the loading elements 32 and the jacket of the Counter roll 30 can optionally be used to support the heating of the counter roll 30 can be used.
  • Up to about 180 ° C all types of heating are inside and outside the roller, conceivable. That is, for heating the Counter roll 30 can, for example, steam, gas, a heat transfer medium, Heating oil, inductive heating and / or the like can be used. For higher temperatures, an additional steam must be added Heat generation can be selected.
  • the jacket of the shoe roller 28 can be a so-called Qualiflex jacket his.
  • the shoe roller 28 is cooled in that the divided into segments Shoe 18 from the cooling medium K, e.g. Cooling water, flows through becomes.
  • the jacket of this shoe roller 28 can be cooled from the outside his.
  • the lubricating oil can be used for cooling can be used from the inside.
  • a roller jacket made of a steel strip conceivable. In this case, the side seal must be different from that of the shoe presses common today are designed so that the coat only one undergoes flat deformation (e.g. through a rubber hose).
  • Another cooling option is the sieves 14, 16 in front of the Cool gap S.
  • the steam lock could then only be on the paper side be used.
  • the shoe roller 20 is heated and the counter roller 30 is cooled. The Heating thus takes place from the side of the shoe roller 28. Possibly. can the result of the friction of the jacket 20 on the shoe 18 Heat for heating the gap S can also be used.
  • the jacket and the lubricant would have to be removed one up to the temperature used, e.g. from about 140 ° C to about 180 ° C, resistant material.
  • the jacket 20 consist of steel and with a modified seal be provided on the edge.
  • the oil is airtight, for example a nitrogen filling or the like can be provided within the shoe roller 28.
  • sliding materials e.g. Bearing metal with embedded Graphite.
  • this embodiment has at least in accordance with FIG essentially the same structure as that of Figure 3. Moreover, this can In principle, the embodiment shown in FIG. 4 also for smoothing be used. In this case, the sieves and the steam lock fall away, and only the paper is fed through the heated nip. Corresponding the counter roller 30 can be cooled to the respective requirements, be uncooled or heated. Likewise, by the amount of the introduced Heat at the same time as smoothing also increased the dry content become.
  • the pressure in the Gap S also through two opposing shoes 18 and 34 be generated, only shoe 18 being segmented in the present case.
  • this is both about the segmented Shoe 18 guided flexible endless belt 20 as well as the counter surface 22 each formed by a steel band.
  • the segmented shoe 18 lies the non-segmented, firm shoe 34, on which the Counter surface 22 forming steel strip is supported.
  • the two steel strips 20, 22 are each around two floating deflecting rollers 36, 38, preferably bending compensation rollers, guided and driven by this.
  • the friction between the steel belts 20, 22 and the deflection rollers 36, 38 can be improved by suitable surfaces of the rollers.
  • suitable surfaces of the rollers For example, grooved and / or coated with hard metal Roll surfaces can be provided.
  • the Shoe 18 again consists of segments 18 'which can be acted upon separately. (see also Figures 1 and 2).
  • the opposite shoe 34 is stationary, taking measures to compensate for the deflections may or may not be.
  • segmented shoe 18 is cooled and not segmented fixed shoe 34 heated.
  • the heating can for example again similar to the embodiment shown in Figure 2, wherein here too the frictional heat can be used.
  • that heat-resistant material is used.
  • the cooling can be done by cooling channels in the respective shoe 18 and / or through which, for example, lubricant consisting of oil or water takes place, which is applied to the band 20 in front of the shoe 18.
  • the steel strips 20, 22 are made wider than the sieves 14, 18. Daszzy Lubrication between bands 20, 22 and shoes 18 and 34, respectively medium used can easily by on the driver's side and the On the drive side next to the shoes on the belt sliding seals are collected and after the shoes by a wedge-shaped scraper, for example 40 can be collected again.
  • the heating device assigned to the heated fixed shoe 34 is designated by H. Cooling coils for the cooling medium assigned to the segmented shoe 18 are denoted by K 1 . A box 42 is assigned to the non-segmented, solid shoe 34.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Paper (AREA)
  • Drying Of Solid Materials (AREA)
EP00111321A 1999-08-31 2000-05-26 Système de séchage Withdrawn EP1081276A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19941336 1999-08-31
DE19941336A DE19941336A1 (de) 1999-08-31 1999-08-31 Trocknungsvorrichtung

Publications (2)

Publication Number Publication Date
EP1081276A2 true EP1081276A2 (fr) 2001-03-07
EP1081276A3 EP1081276A3 (fr) 2001-08-29

Family

ID=7920229

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00111321A Withdrawn EP1081276A3 (fr) 1999-08-31 2000-05-26 Système de séchage

Country Status (3)

Country Link
US (1) US6306261B1 (fr)
EP (1) EP1081276A3 (fr)
DE (1) DE19941336A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1505203A1 (fr) * 2003-08-07 2005-02-09 Voith Paper Patent GmbH Dispositif de traitement d'une bande
CN110160351A (zh) * 2019-06-05 2019-08-23 太仓塑料助剂厂有限公司 过氧化二异丙苯的分级干燥系统
CN111380348A (zh) * 2020-04-14 2020-07-07 嵊州向合纺织科技有限公司 一种充分且防褶皱的纺织烘干设备

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6910376B2 (en) 2001-02-22 2005-06-28 Metso Paper, Inc. Measurement method and system in the manufacture of paper or paperboard
DE10116840A1 (de) * 2001-04-04 2002-10-17 Voith Paper Patent Gmbh Verfahren und Vorrichtung zum Glätten einer Materialbahn
US6752908B2 (en) * 2001-06-01 2004-06-22 Stowe Woodward, Llc Shoe press belt with system for detecting operational parameters
DE10131223A1 (de) * 2001-06-28 2003-01-16 Voith Paper Patent Gmbh Staucheinrichtung
EP1304413A3 (fr) * 2001-10-18 2004-05-12 Voith Paper Patent GmbH Section de séchage et un appareil de lissage pour la section de séchage
DE10151456A1 (de) * 2001-10-18 2003-04-30 Voith Paper Patent Gmbh Trockenpartie sowie Glättvorrichtung für eine solche Trockenpartie
DE10157693C5 (de) * 2001-11-24 2012-04-26 Voith Patent Gmbh Vorrichtung und Verfahren zum Aufwickeln einer Papier- oder Kartonbahn
FI20020159A (fi) * 2002-01-29 2003-07-30 Metso Paper Inc Pinnan muokkauslaite ja laitetta käyttävä menetelmä päällystetyn tai päällystämättömän kuiturainan viimeistelemiseksi
DE10203321A1 (de) * 2002-01-29 2003-08-14 Voith Paper Patent Gmbh Messwalze
DE10213852A1 (de) 2002-03-27 2003-10-16 Voith Paper Patent Gmbh Pressschuh
US20040187523A1 (en) * 2003-03-24 2004-09-30 Corning Incorporated Score bar instrumented with a force sensor
EP2610568A1 (fr) * 2003-03-26 2013-07-03 Fujifilm Corporation Procédé de séchage de couche de revêtement
FI20075452L (fi) * 2007-06-15 2008-12-16 Upm Kymmene Corp Menetelmä ja laitteisto paperin valmistamiseksi
DE102014213512A1 (de) * 2014-07-11 2016-01-14 Voith Patent Gmbh Maschine zur Herstellung einer Faserstoffbahn

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DE19544979A1 (de) * 1995-12-01 1997-06-05 Voith Sulzer Papiermasch Gmbh Vorrichtung zum Komprimieren, Glätten und/oder Entwässern einer Faserstoffbahn
DE19617801A1 (de) * 1996-05-03 1997-11-13 Voith Sulzer Papiermasch Gmbh Preßvorrichtung

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GB1502040A (en) 1975-12-30 1978-02-22 Tampella Oy Ab Method of drying a cardboard or a paper web and drying device for applying this method
DE2837913C2 (de) * 1978-08-31 1982-10-21 ER-WE-PA Maschinenfabrik und Eisengießerei GmbH, 4006 Erkrath Walze mit steuerbarer Durchbiegung, insbesondere für Maschinen zur Erzeugung und Verarbeitung von Bahnen aus Papier oder Kunststoff
FI61537C (fi) 1981-02-19 1982-08-10 Tampella Oy Ab Foerfarande och anlaeggning foer kontinuerlig torkning av en pappers- eller liknande poroes bana
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DE3705241A1 (de) * 1986-12-24 1988-07-07 Escher Wyss Gmbh Verfahren zur mechanisch-thermischen entwaesserung einer faserstoffbahn
DE19544979A1 (de) * 1995-12-01 1997-06-05 Voith Sulzer Papiermasch Gmbh Vorrichtung zum Komprimieren, Glätten und/oder Entwässern einer Faserstoffbahn
DE19617801A1 (de) * 1996-05-03 1997-11-13 Voith Sulzer Papiermasch Gmbh Preßvorrichtung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1505203A1 (fr) * 2003-08-07 2005-02-09 Voith Paper Patent GmbH Dispositif de traitement d'une bande
CN110160351A (zh) * 2019-06-05 2019-08-23 太仓塑料助剂厂有限公司 过氧化二异丙苯的分级干燥系统
CN111380348A (zh) * 2020-04-14 2020-07-07 嵊州向合纺织科技有限公司 一种充分且防褶皱的纺织烘干设备
CN111380348B (zh) * 2020-04-14 2020-11-27 淄博玉华纺织有限公司 一种充分且防褶皱的纺织烘干设备

Also Published As

Publication number Publication date
DE19941336A1 (de) 2001-03-01
EP1081276A3 (fr) 2001-08-29
US6306261B1 (en) 2001-10-23

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