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WO2012041552A1 - Dispositif pour humecter la couche de surface d'une bande de tissu fibreux - Google Patents

Dispositif pour humecter la couche de surface d'une bande de tissu fibreux Download PDF

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Publication number
WO2012041552A1
WO2012041552A1 PCT/EP2011/062436 EP2011062436W WO2012041552A1 WO 2012041552 A1 WO2012041552 A1 WO 2012041552A1 EP 2011062436 W EP2011062436 W EP 2011062436W WO 2012041552 A1 WO2012041552 A1 WO 2012041552A1
Authority
WO
WIPO (PCT)
Prior art keywords
steam
chamber
heating
valve
wall
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.)
Ceased
Application number
PCT/EP2011/062436
Other languages
German (de)
English (en)
Inventor
Thomas Keuerleber
Marcus Elvermann
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
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Priority to ATGM9012/2011U priority Critical patent/AT13382U1/de
Publication of WO2012041552A1 publication Critical patent/WO2012041552A1/fr
Anticipated expiration legal-status Critical
Priority to FI20134105U priority patent/FI10172U1/fi
Ceased legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/0073—Accessories for calenders
    • D21G1/0093—Web conditioning devices
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/008—Steam showers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G7/00—Damping devices

Definitions

  • the invention relates to an apparatus and a method for moistening a fibrous web, in particular a paper, tissue or board web, which is arranged in front of a pair of rollers forming a nip.
  • the device consists of a steam blast chamber, which is arranged in a steam chamber with a steam connection.
  • the steam chamber can be supplied with steam via the steam chamber and at least one steam valve.
  • Such moistening devices serve to apply vapor to passing webs of material in order to increase their moisture and temperature.
  • a widespread field of application here is the production or processing of paper webs in which such steam moistening devices are used in conjunction with calenders or other roll arrangements. Steam is applied to the paper web prior to passing through a nip to improve gloss or smoothness, alter the bulk, thickness or density, or increase moisture.
  • the transverse profile can be improved via a transverse profile control.
  • the appearance of a paper web which is mainly determined by the gloss and the smoothness or roughness of its surface, is in today's time an important parameter of the paper web.
  • the surface texture not only affects its appearance, but also its further processability.
  • high gloss and / or smoothness values are desired, which should also be reproducible as uniformly as possible.
  • the paper web is passed through at least one nip and smoothed under high pressure. Without additional pretreatment, the paper web would be highly compressed and thus suffers a loss of volume. In addition, there is an increased black satin and a deterioration of the paper web properties.
  • the steam blower box is here similar to the structure of DE 43 01 023 A1, with the difference that the steam blower chamber is divided into zones.
  • the zone partition walls are equipped with additional heating channels, so that each steam chamber can be heated on all sides.
  • This structure is very expensive and brings in the heating of the free housing wall no advantage.
  • DE 195 00 752 A1 discloses a Dampfbefeuchtungs driving comprising a Schudampfverteilerhunt over which the steam blowing chamber can be supplied with working steam. The even distribution is achieved through the supply lines. There is no heating of the free outer wall.
  • the object of the invention is to provide a device and a method for moistening a material web, which / does not have the disadvantages mentioned above and is also constructed more cost-effectively.
  • a device of the aforementioned type in which the steam-blowing chamber is arranged in the steam chamber in such a way that that at least part of an outer wall of the steam-blowing chamber provided with steam outlet openings is not enclosed by the steam chamber, wherein the outer wall can be heated independently of the steam outlet openings with a heating device.
  • the heating device is preferably formed by a heating channel which is connected from the outside to the outer wall and which is independently heated with steam.
  • a heating channel which is connected from the outside to the outer wall and which is independently heated with steam.
  • an electric heating device is conceivable, which is particularly advantageous controllable.
  • a heating steam connection is provided for the heating channel, which is arranged on the opposite side from the working steam connection.
  • each zone can be supplied with steam from the steam chamber via a steam valve.
  • Each steam valve is preferably positioned on the steam chamber, such that the steam chamber can be connected to the steam blast chamber via the steam valve and a connection channel.
  • the steam valve can consist of several individual valves that regulate the steam flow in a cascade. Preferably, however, a valve is used with which the steam flow can be regulated linearly. Preferably, there is a differential pressure between the two ends of the steam chamber. This causes a uniform flow of steam through the steam chamber.
  • the steam chamber and the heating channel have at least one outlet from which steam and / or condensed water can be discharged.
  • Another aspect of the invention is the method with a device of the type mentioned above, which is characterized in that the Dampfblaskam- mer in the steam chamber is arranged such that at least a part of a steam outlet openings provided with the outer wall of the steam chamber does not surrounded by the steam chamber is, wherein the outer wall is heated independently of the steam outlet openings with a heater.
  • the device and / or the outer wall can be opened quickly and in a targeted manner Operating temperature can be brought or held, without the risk of condensation in the evaporation zone when starting the system.
  • Figure 1 shows a cross section of the device according to the invention
  • Figure 2 is a longitudinal section through the device
  • FIG. 1 shows a cross section through the device according to the invention.
  • the device shown here is generally referred to as a steam blower box 1.
  • the steam box consists of a steam chamber 4, in which a steam blast chamber 6 is housed.
  • the steam blast chamber 6 is not completely enclosed by the steam chamber 4, but an outer wall 15, in which the steam outlet openings 1 1 are positioned, is at least partially not enclosed by the steam chamber 4 and thus can not be heated by the working steam.
  • the working steam is introduced through the working steam connection 8 into the steam chamber 4 and thus heats all inner walls of the steam blowing chamber 6.
  • the outer wall 15 has, in addition to the steam outlet openings 1 1, a heating channel 7, which is designed so that it comes as close as possible to the steam outlet openings 1 1, so that as far as possible, the entire outer wall can be heated.
  • the steam blast chamber 6 may, as shown in Fig. 2, be divided into a plurality of zones 13, in which case each zone 13 is associated with a steam valve 3.
  • steam is supplied into the steam chamber 4.
  • the supplied steam then passes via the steam valves 3 and the connecting channels 5 into the steam blowing chambers 6 and from there through the nozzle outlet openings 11 into the vaporization space 16 and thus onto the fibrous web 10.
  • the steam valve 3 is mounted on the steam chamber 4, ie outside the steam chamber and thus in a non-heated area. Thus, only the valve block 17 comes into contact with the heated steam chamber 4.
  • the vapor passes through an outlet opening in the steam chamber 4 through the valve block 17, the connecting channel into the steam blast chamber 6.
  • the actuator of the steam valve 3 is mounted on the valve block 17 and thus does not come directly in contact with the steam heat and is also very easy to maintain and assemble.
  • the heating channel 7 is connected to a separate heating steam connection 9, which is separately controllable.
  • FIG. 2 shows a longitudinal section through the device. It can be seen from this representation that the steam chamber 4 is supplied by a heating steam connection 8 and the heating duct 7 is supplied by a heating steam connection 9, which are connected opposite to the steam blower box 1.
  • a steam control valve 18 is installed in each supply line, so that the required steam can be controllably supplied to the steam chamber and the heating channel.
  • the steam chamber 4 as well as the heating channel 7 have a steam and condensate outlet 14.

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  • Paper (AREA)

Abstract

L'invention concerne un dispositif pour humecter une bande de tissu fibreux (10), en particulier une bande de papier, de papier de soie ou de carton, qui est disposée en amont d'une paire de cylindres formant une fente de cylindre, doté d'une chambre de soufflage de vapeur (6) qui est disposée dans une chambre de vapeur (4) avec un branchement de vapeur de travail (8) et qui peut être alimentée en vapeur par au moins une vanne de vapeur (3), la chambre de soufflage de vapeur (6) étant disposée dans la chambre de vapeur (4), de telle sorte qu'au moins une partie d'une paroi extérieure (15), dotée d'ouvertures de sortie de vapeur (11), de la chambre de soufflage de vapeur (6) n'est pas entourée par la chambre de vapeur (4), la paroi extérieure (15) pouvant être chauffée indépendamment avec un appareil de chauffage (7) à côté des ouvertures de sortie de vapeur (11).
PCT/EP2011/062436 2010-09-30 2011-07-20 Dispositif pour humecter la couche de surface d'une bande de tissu fibreux Ceased WO2012041552A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ATGM9012/2011U AT13382U1 (de) 2010-09-30 2011-07-20 Vorrichtung zum Befeuchten der Oberflächenschicht einer Faserstoffbahn
FI20134105U FI10172U1 (fi) 2011-07-20 2013-04-25 Laitteisto kuitumassarainan pintakerroksen kostuttamiseksi

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010041762.9 2010-09-30
DE102010041762A DE102010041762A1 (de) 2010-09-30 2010-09-30 Vorrichtung zum Befeuchten der Oberflächenschicht einer Faserstoffbahn

Publications (1)

Publication Number Publication Date
WO2012041552A1 true WO2012041552A1 (fr) 2012-04-05

Family

ID=44512835

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/062436 Ceased WO2012041552A1 (fr) 2010-09-30 2011-07-20 Dispositif pour humecter la couche de surface d'une bande de tissu fibreux

Country Status (3)

Country Link
AT (1) AT13382U1 (fr)
DE (2) DE102010041762A1 (fr)
WO (1) WO2012041552A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015217369A1 (de) * 2015-09-11 2017-01-05 Voith Patent Gmbh Dampfblaskasten

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3701407C1 (de) * 1987-01-20 1988-04-07 V I B Appbau Gmbh Dampfblaskasten
US5090133A (en) * 1989-08-23 1992-02-25 Thermo Electron Web Systems, Inc. Steam shower apparatus and method of using same
US5149401A (en) * 1990-03-02 1992-09-22 Thermo Electron Web Systems, Inc. Simultaneously controlled steam shower and vacuum apparatus and method of using same
DE4125062A1 (de) 1991-07-29 1993-02-04 Vib Apparatebau Gmbh Dampfblaskasten
DE4301023A1 (de) 1993-01-16 1994-07-21 Vib Apparatebau Gmbh Verfahren und Vorrichtung zum Erhöhen von Glanz und/oder Glätte einer Materialbahn
DE19500752C1 (de) 1995-01-12 1996-01-04 Vib Apparatebau Gmbh Dampfbefeuchtungseinrichtung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3701407C1 (de) * 1987-01-20 1988-04-07 V I B Appbau Gmbh Dampfblaskasten
US5090133A (en) * 1989-08-23 1992-02-25 Thermo Electron Web Systems, Inc. Steam shower apparatus and method of using same
US5149401A (en) * 1990-03-02 1992-09-22 Thermo Electron Web Systems, Inc. Simultaneously controlled steam shower and vacuum apparatus and method of using same
DE4125062A1 (de) 1991-07-29 1993-02-04 Vib Apparatebau Gmbh Dampfblaskasten
US5282323A (en) * 1991-07-29 1994-02-01 V.I.B. Apparatebau Gmbh Apparatus for contacting running paper webs with dried steam
DE4301023A1 (de) 1993-01-16 1994-07-21 Vib Apparatebau Gmbh Verfahren und Vorrichtung zum Erhöhen von Glanz und/oder Glätte einer Materialbahn
DE19500752C1 (de) 1995-01-12 1996-01-04 Vib Apparatebau Gmbh Dampfbefeuchtungseinrichtung

Also Published As

Publication number Publication date
AT13382U1 (de) 2013-11-15
DE102010041762A1 (de) 2012-04-05
DE202010017942U1 (de) 2013-04-08

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