EP1852551A1 - Dispositif d'égouttage - Google Patents

Dispositif d'égouttage Download PDF

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Publication number
EP1852551A1
EP1852551A1 EP07107298A EP07107298A EP1852551A1 EP 1852551 A1 EP1852551 A1 EP 1852551A1 EP 07107298 A EP07107298 A EP 07107298A EP 07107298 A EP07107298 A EP 07107298A EP 1852551 A1 EP1852551 A1 EP 1852551A1
Authority
EP
European Patent Office
Prior art keywords
fibrous web
press
press roll
roll
belt
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.)
Granted
Application number
EP07107298A
Other languages
German (de)
English (en)
Other versions
EP1852551B1 (fr
Inventor
Andreas Meschenmoser
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
Publication of EP1852551A1 publication Critical patent/EP1852551A1/fr
Application granted granted Critical
Publication of EP1852551B1 publication Critical patent/EP1852551B1/fr
Not-in-force 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
    • D21F3/0272—Wet presses in combination with suction or blowing devices
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/14—Making cellulose wadding, filter or blotting paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/14—Making cellulose wadding, filter or blotting paper
    • D21F11/145—Making cellulose wadding, filter or blotting paper including a through-drying process
    • 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
    • D21F3/0281—Wet presses in combination with a dryer roll
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/18—Drying webs by hot air
    • D21F5/182—Drying webs by hot air through perforated cylinders

Definitions

  • the invention relates to a device for dewatering a paper, tissue or another fibrous web in a machine for producing and / or thinning same, in which the fibrous web at least on each side at least one air-permeable and endlessly circulating belt wraps around a cylindrical and rotating press roll.
  • the object of the invention is therefore to allow a gentle and effective drainage of the fibrous web as possible.
  • the press roll is designed as a blow roll, which preferably directs hot blast air in the wrap around the fibrous web.
  • the blowing air causes für für Stunsky the fibrous web in the wrap of the press roll in a very cost effective manner, especially since compressed air is available in such machines in sufficient quantity.
  • the application of hot blast air can further assist drying.
  • a pressing pressure can be exerted on the fibrous web via the contact pressure of the press belt lying outside the press roll due to the belt tension, which promotes dewatering.
  • the press belt in the wrap area of the press roll is associated with a water collecting device which absorbs the, driven by the blowing air through the press belt water.
  • the water collection device is designed as a suction device.
  • the vacuum of the suction device causes the suction of additional water from the belts and the fibrous web into the water collecting device.
  • At least the, on the, the pressing roller opposite side of the fibrous web extending bands should be formed as a water-permeable felts or sieves.
  • the bands should wrap around at least one guide roll in front of the press roll together with the fibrous web, which is arranged on the, the press roll opposite side of the fibrous web.
  • the effect of the belt tension during the wrapping improves with decreasing diameter of the guide roller. Therefore, the diameter of the guide roll should be less than 800 mm.
  • the steam blower box should be arranged opposite the guide roller.
  • the guide roll wrapped around by the bands should be designed as a suction guide roll.
  • the negative pressure sucks water from the belts and the fibrous web into the guide roller.
  • the press belt has a high belt tension, i. Tensile stress is exposed, it is usually advantageous if at least two bands are arranged on the, the press roll opposite side of the fibrous web, wherein the outer forms the press belt. This makes it possible to adapt the other band according to the needs of water permeability, roughness, water storage capacity, etc.
  • At least the press belt after the press roll should wrap around a driven guide roll. Because of the high tensile strength of the press belt, it is particularly suitable for initiating the required drive power.
  • the strip arranged between the fibrous web and the press roll has a structured surface in the area of contact with the fibrous web.
  • a simplification of the arrangement further results when the press roll is arranged above the fibrous web. Tearing of the press belt thus does not affect the rest of the arrangement.
  • the fibrous web 1 is guided in the form of a tissue web from an air-permeable guide belt 2 starting from a headbox 11 of the manufacturing machine through a dewatering device according to the invention to a large drying cylinder 12, especially a Yankee cylinder.
  • the drying takes place, so that the fibrous web 1 can subsequently be removed with the aid of a creping doctor and thereby be creped. Thereafter, the rolling up of the fibrous web 1 takes place.
  • the dewatering device has a cylindrical and rotating press roll 5 arranged above the fibrous web 1. This press roll 5 is separated from the fibrous web 1 together with the inner guide strip 2 and at least an outer lying and also permeable to air and water press band 4.
  • the press roll 5 is designed as a blow roll with a perforated roll shell and directs hot blast air during wrapping in the direction of the fibrous web 1. During this contiguous web 1 in the band 4 and driven by this in a relation to the press roll 5 arranged water collecting device 6.
  • the water collecting device 6 is sucked.
  • a perforated suction pipe 9 running transversely to the web running direction 14 and connected to a vacuum source in the water collecting device 6.
  • the press belt 4 pushes the fibrous web 1 during the wrapping of the press roll 5 due to the belt tension against the guide belt 2, which leads to the squeezing out of water from the fibrous web 1. Because of the high tensile stresses, the press belt 4 must have a correspondingly high strength. For this particular bands or sieves are suitable.
  • the guide belt 2 After the press roller 5, the guide belt 2, the fibrous web 1 alone to the drying cylinder 12 continues. There, the fibrous web 1 is pressed by a looped by the guide belt 2 press roller 13 to the drying cylinder 12. Because of the smooth surface of the drying cylinder 12, the fibrous web 1 then adhere to this, so that the guide belt 2 can be led away.
  • the surface of the guide belt 2 is structured, so that during contact with the fibrous web 1, in particular during the pressing of the fibrous web 1 to the press roller 5, a corresponding surface structure in the fibrous web 1 is formed.
  • the band 3 is usually designed as a felt or sieve in the interest of higher water absorbency.
  • the press belt 4 wraps around a guide roller 7 together with the belt 3, the fibrous web 1 and the guide belt 2 located here. During this looping, the fibrous web 1 is already pre-pressed.
  • the guide roller 7 Opposite the guide roller 7 is a steam blower box 8, the superheated steam is directed to the guide belt 2 and this belt 2 and the fibrous web 1 heats up.
  • both belts 3,4 can optionally be conditioned and returned to the guide roller 7.
  • the fibrous web 1 in the dewatering apparatus shown in FIG. 2 is guided around the press roll 5 only by the guide belt 2 and the press belt 4.
  • the reduced number of bands also leads to less effort.
  • the fibrous web 1 is guided around a guide roller 7 together with the press belt 4 and the outer guide belt 2 before the wrapping of the press roller 5.
  • This guide roller 7 is additionally carried out, however, sucked, so that a certain amount of water from the fibrous web 1 and / or the press belt 4 is already sucked by this negative pressure.
  • Guide roller 7 is the steam blower box 8 for heating the guide belt 2 and the fibrous web. 1
  • the fibrous web 1 continues to run together with the guide belt 2, so that the press belt 4 alone can wrap around a driven guide roll 10.
  • the press roll 13 forming a press nip with the drying cylinder 12 is vacuumed.
  • the guide roller 7 in front of the press roller 5 has a diameter of less than 800 mm, which increases the effect of the belt tension on the fibrous web 1.
  • the formation of the press roll 5 as a blow roll not only reduces the energy costs, it also reduces the risk of contamination in the perforation of the roll shell of the press roll. 5
  • the press belt 4 Since the press belt 4 is located below the fibrous web 1, the risk for the large drying cylinder 12 is reduced in the event of a tear of the belt 4 as a consequence of the high belt tensions.
EP20070107298 2006-05-05 2007-05-02 Dispositif d'égouttage Not-in-force EP1852551B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610021328 DE102006021328A1 (de) 2006-05-05 2006-05-05 Entwässerungsvorrichtung

Publications (2)

Publication Number Publication Date
EP1852551A1 true EP1852551A1 (fr) 2007-11-07
EP1852551B1 EP1852551B1 (fr) 2014-03-19

Family

ID=38169311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070107298 Not-in-force EP1852551B1 (fr) 2006-05-05 2007-05-02 Dispositif d'égouttage

Country Status (2)

Country Link
EP (1) EP1852551B1 (fr)
DE (1) DE102006021328A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008077869A1 (fr) * 2006-12-22 2008-07-03 Voith Patent Gmbh Procédé et dispositif de séchage d'une bande de matière fibreuse
WO2008077874A1 (fr) * 2006-12-22 2008-07-03 Voith Patent Gmbh Procédé et dispositif de séchage d'une bande de matière fibreuse
AT505760B1 (de) * 2008-01-09 2009-04-15 Andritz Ag Maschf Vorrichtung und verfahren zur entwasserung einer materialbahn
WO2015000690A1 (fr) * 2013-07-04 2015-01-08 Voith Patent Gmbh Procédé et dispositif compact de fabrication de non-tissé
WO2016066375A1 (fr) * 2014-10-29 2016-05-06 Voith Patent Gmbh Dispositif d'égouttage d'une bande de matière fibreuse

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3303576A (en) * 1965-05-28 1967-02-14 Procter & Gamble Apparatus for drying porous paper
US3771236A (en) * 1971-01-12 1973-11-13 R Candor Method and apparatus for treating sheet-like material with fluid
FR2733522A1 (fr) * 1995-04-28 1996-10-31 Kaysersberg Sa Procede et dispositif de fabrication d'une feuille de papier avec presechage par air traversant
WO1998021407A1 (fr) * 1996-11-14 1998-05-22 The Procter & Gamble Company Procede de fabrication d'une bande de papier presentant des caracteristiques de bouffant et de planeite
DE10303959A1 (de) * 2003-01-31 2004-09-02 Voith Paper Patent Gmbh Verdrängungsentwässerungspresse
US20050167062A1 (en) * 2004-01-30 2005-08-04 Jeffrey Herman Dewatering apparatus in a paper machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3303576A (en) * 1965-05-28 1967-02-14 Procter & Gamble Apparatus for drying porous paper
US3771236A (en) * 1971-01-12 1973-11-13 R Candor Method and apparatus for treating sheet-like material with fluid
FR2733522A1 (fr) * 1995-04-28 1996-10-31 Kaysersberg Sa Procede et dispositif de fabrication d'une feuille de papier avec presechage par air traversant
WO1998021407A1 (fr) * 1996-11-14 1998-05-22 The Procter & Gamble Company Procede de fabrication d'une bande de papier presentant des caracteristiques de bouffant et de planeite
DE10303959A1 (de) * 2003-01-31 2004-09-02 Voith Paper Patent Gmbh Verdrängungsentwässerungspresse
US20050167062A1 (en) * 2004-01-30 2005-08-04 Jeffrey Herman Dewatering apparatus in a paper machine

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008077869A1 (fr) * 2006-12-22 2008-07-03 Voith Patent Gmbh Procédé et dispositif de séchage d'une bande de matière fibreuse
WO2008077874A1 (fr) * 2006-12-22 2008-07-03 Voith Patent Gmbh Procédé et dispositif de séchage d'une bande de matière fibreuse
US8402673B2 (en) 2006-12-22 2013-03-26 Voith Patent Gmbh Method for drying a fibrous web
US8435384B2 (en) 2006-12-22 2013-05-07 Voith Patent Gmbh Method and apparatus for drying a fibrous web
US8544184B2 (en) 2006-12-22 2013-10-01 Voith Patent Gmbh Method and apparatus for drying a fibrous web
AT505760B1 (de) * 2008-01-09 2009-04-15 Andritz Ag Maschf Vorrichtung und verfahren zur entwasserung einer materialbahn
WO2009086573A1 (fr) * 2008-01-09 2009-07-16 Andritz Ag Dispositif et procédé pour éliminer l'eau d'une bande de matériau
WO2015000690A1 (fr) * 2013-07-04 2015-01-08 Voith Patent Gmbh Procédé et dispositif compact de fabrication de non-tissé
WO2016066375A1 (fr) * 2014-10-29 2016-05-06 Voith Patent Gmbh Dispositif d'égouttage d'une bande de matière fibreuse
CN107148500A (zh) * 2014-10-29 2017-09-08 福伊特专利有限公司 用于纤维材料幅脱水的装置

Also Published As

Publication number Publication date
EP1852551B1 (fr) 2014-03-19
DE102006021328A1 (de) 2007-11-08

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