EP1245725A1 - Procédé et dispositif pour régler des paramètres de qualité d'une machine à papier, tissu ou à égoutter - Google Patents

Procédé et dispositif pour régler des paramètres de qualité d'une machine à papier, tissu ou à égoutter Download PDF

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Publication number
EP1245725A1
EP1245725A1 EP02005501A EP02005501A EP1245725A1 EP 1245725 A1 EP1245725 A1 EP 1245725A1 EP 02005501 A EP02005501 A EP 02005501A EP 02005501 A EP02005501 A EP 02005501A EP 1245725 A1 EP1245725 A1 EP 1245725A1
Authority
EP
European Patent Office
Prior art keywords
headbox
web
tubes
width
paper
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
EP02005501A
Other languages
German (de)
English (en)
Other versions
EP1245725B1 (fr
Inventor
Gerald Ing. Schadler
Wilhelm Dipl.-Ing. Mausser
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.)
Andritz AG
Original Assignee
Andritz AG
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Filing date
Publication date
Application filed by Andritz AG filed Critical Andritz AG
Priority to AT02005501T priority Critical patent/ATE312232T1/de
Publication of EP1245725A1 publication Critical patent/EP1245725A1/fr
Application granted granted Critical
Publication of EP1245725B1 publication Critical patent/EP1245725B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D21F1/022—Means for injecting material into flow within the headbox
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/06—Regulating pulp flow

Definitions

  • the invention relates to a device for controlling the basis weight cross section, formation, fiber orientation and other quality parameters a fibrous web after the headbox for paper, tissue and Pulp drainage systems, with at least one suspension feed, at least one distribution device and at least one Deriving the excess suspension from the distribution device, wherein the distribution device includes a distribution chamber and a turbulence generation chamber comprises a number of pipes lined up.
  • the invention further relates to a corresponding method.
  • the aim of the invention is to achieve these uneven quality properties to improve or prevent.
  • the invention is therefore characterized in that in both edge areas of the distribution chamber and turbulence generation chamber existing headbox in each case derivations for a partial flow of Suspension in the direction of web travel are provided. By deriving the Suspension at the edges in the direction of web travel will cause additional turbulence prevented and the corresponding irregular area not at the edges of the fibrous, in particular tissue or paper web fed.
  • a favorable further development of the invention is characterized in that that the distribution chamber is on both sides of the headbox around the Width of the irregular zones on the paper web edges over the Paper web width extends, the turbulence generating chamber on both sides of the headbox by the width of the irregular Zones at the edges of the paper web across the width of the paper web be widened and each have several pipes in these areas can. This causes irregularities that are generally present the edges of the fabric arise outside of those to be further processed Web width.
  • An advantageous embodiment of the invention is characterized in that that the pipes are on the edges of the turbulence generating chamber reduced compared to the other pipes, in particular to about a quarter the length of the remaining pipes are reduced.
  • the irregular fabric edges are deducted at the earliest possible location of the headbox and thus not through the headbox and subsequently led the paper machine.
  • An advantageous development of the invention is characterized in that that to the outer, especially shortened pipes of the turbulence generation chamber, Connect each header pipe, whereby in the Manifolds control valves can be provided. Through the Control valves are possible in the side manifolds set the same pressure loss as in the rest of the headbox and thus Irregularities in the inflow at the transition from the short to the to prevent long pipes of the turbulence generator.
  • a favorable embodiment of the device according to the invention is characterized in that for multi-layer headboxes for each Corresponding derivations are provided separately.
  • the invention also relates to a method for controlling the basis weight cross section, formation, fiber orientation and others Quality parameters of a fibrous web after the headbox at Paper, tissue and pulp drainage systems, with at least one Suspension feed, at least one distribution device and at least one derivation of the excess suspension from the Distributor.
  • An advantageous development of the invention is characterized in that that the discharged partial flows are regulated. This allows one Adjustment of the pressure losses in the side drains to the rest Part of the headbox and thus a prevention of uneven inflow conditions at the transition from the short to the long tubes of the turbulence insert.
  • a favorable embodiment of the invention is characterized in that that with multilayer headboxes for each ply separately Partial flows are derived. This makes it possible for multi-layer Headboxes with differential speeds in the individual layers Set speeds in the side drains.
  • FIG. 1 shows a headbox according to the prior art
  • FIG. 2 shows a Headbox according to the invention
  • FIGS. 3 to 5 the returns represents one-, two- and three-layer headboxes.
  • the (fiber) stock suspension is generally from the drive side of the machine transversely to the running direction of the Fibrous, for example paper web fed to a distribution pipe 1.
  • the material suspension is then diverted in the direction of travel of the web and flows through then a turbulence generating chamber 2, which consists of there are pipes lined up and then a nozzle space 3 and then meets the drainage part, especially one Sieve the machine.
  • a return line 4 At the driver end of the distribution pipe 1 there is a return line 4.
  • Headboxes of this type cause differences in the quality parameters like basis weight cross profile, formation and fiber orientation in the area of the edges compared to the rest of the pulp, in particular Paper web.
  • the main reason for this is turbulence at the Deflection edges 5 and 6 between the distribution pipe 1 and turbulence generation chamber 2, with these swirls throughout the headbox continue and on the above differences and problems to lead.
  • the edge strips are separated in the course of the production process and returned as a committee. Therefore, all parts of the system have a total width including the edge strips, and can therefore not fully used for the final production.
  • Fig. 2 now shows a headbox according to the invention.
  • the edge strips not afterwards either on the sieve (by separating with Water jet) or in the dry state (by appropriate Cut) and the entire width of the To be able to use Siebes and the following aggregates Headbox widened on both sides to the extent that the width of the irregular zones on the band edges.
  • the outer Tubes 7 and 8 that are outside the width of the pulp to be produced in particular Paper web lie, shortened and with discharge lines 11, 12 connected. Control valves 13 can still be located in these discharge lines 11, 12 be provided.
  • Fig. 3 shows the side view for a single-layer headbox with Distribution pipe 1, turbulence generation chamber 2, edge pipe 7 and discharge pipe 11 with control valve 13.
  • Fig. 4 shows a corresponding arrangement for a two-layer headbox 5 shows a three-layer headbox.
  • the individual layers are designated 14, 15, 16.
  • the cut in Edge pipes 7, 8 can also be made according to the arrangement, so that the pipes are then led out of the machine side by side can be.
  • the tubes 11 could already be in the Area of the turbulence generating chamber 2 merged and only be controlled by a common control valve.
  • the poor quality border strips can be avoided. from that it follows that the production of a plant compared to up to 5% previous, equally wide plants can be increased. Also dropped the previous committee, which is returned and therefore also in the interpretation of the processing part would have to be taken into account.
  • the invention can be used not only in paper machines or tissue machines are used, but also in pulp dewatering machines Find use.

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  • Paper (AREA)
EP02005501A 2001-03-29 2002-03-11 Procédé et dispositif pour régler des paramètres de qualité d'une machine à papier, à tissu ou à égoutter Expired - Lifetime EP1245725B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT02005501T ATE312232T1 (de) 2001-03-29 2002-03-11 Verfahren und vorrichtung zur regelung von qualitätsparametern bei papier-, tissue- und zellstoffentwässerungsmaschinen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0050701A AT409768B (de) 2001-03-29 2001-03-29 Verfahren und vorrichtung zur regelung von qualitätsparametern bei papier-, tissue und zellstoffentwässerungsanlagen
AT5072001 2001-03-29

Publications (2)

Publication Number Publication Date
EP1245725A1 true EP1245725A1 (fr) 2002-10-02
EP1245725B1 EP1245725B1 (fr) 2005-12-07

Family

ID=3675491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02005501A Expired - Lifetime EP1245725B1 (fr) 2001-03-29 2002-03-11 Procédé et dispositif pour régler des paramètres de qualité d'une machine à papier, à tissu ou à égoutter

Country Status (6)

Country Link
US (1) US6821390B2 (fr)
EP (1) EP1245725B1 (fr)
AT (2) AT409768B (fr)
BR (1) BR0201003A (fr)
DE (1) DE50205151D1 (fr)
MX (1) MXPA02003160A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1457597A2 (fr) * 2003-03-11 2004-09-15 Andritz AG Méthode pour regler le fonctionnement d'une cellule de flottation
EP2022889A3 (fr) * 2007-07-25 2011-12-21 Voith Patent GmbH Dispositif et procédé de réglage en ligne du profilé transversal d'orientation des fibres
CN112056573A (zh) * 2020-09-04 2020-12-11 廖志强 一种柚子啤酒和果脯加工用柚子去皮装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101589296B (zh) * 2006-02-01 2015-04-22 美商艾斯登强生股份有限公司 造纸机送浆系统及浆料的定量黏度规划方法
CN117433454B (zh) * 2023-12-15 2024-03-22 成都匠泰建筑工程设计有限公司 一种景观园林面积计量设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3204740A1 (de) * 1982-02-11 1983-08-18 Escher Wyss Gmbh, 7980 Ravensburg Papiermaschine
EP0391015A1 (fr) * 1989-04-06 1990-10-10 Hans Albert Système de caisse de tête
WO1999041449A1 (fr) * 1998-02-13 1999-08-19 Valmet Corporation Caisse de tete d'une machine a papier/carton permettant de reguler le grammage d'une bande continue

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3021219B2 (ja) * 1992-10-29 2000-03-15 三菱重工業株式会社 抄紙機ヘッドボックスの端部流量調整装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3204740A1 (de) * 1982-02-11 1983-08-18 Escher Wyss Gmbh, 7980 Ravensburg Papiermaschine
EP0391015A1 (fr) * 1989-04-06 1990-10-10 Hans Albert Système de caisse de tête
WO1999041449A1 (fr) * 1998-02-13 1999-08-19 Valmet Corporation Caisse de tete d'une machine a papier/carton permettant de reguler le grammage d'une bande continue

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1457597A2 (fr) * 2003-03-11 2004-09-15 Andritz AG Méthode pour regler le fonctionnement d'une cellule de flottation
EP1457597A3 (fr) * 2003-03-11 2007-10-17 Andritz AG Méthode pour regler le fonctionnement d'une cellule de flottation
EP2022889A3 (fr) * 2007-07-25 2011-12-21 Voith Patent GmbH Dispositif et procédé de réglage en ligne du profilé transversal d'orientation des fibres
CN112056573A (zh) * 2020-09-04 2020-12-11 廖志强 一种柚子啤酒和果脯加工用柚子去皮装置
CN112056573B (zh) * 2020-09-04 2022-05-20 廖志强 一种柚子啤酒和果脯加工用柚子去皮装置

Also Published As

Publication number Publication date
MXPA02003160A (es) 2002-11-05
ATA5072001A (de) 2002-03-15
BR0201003A (pt) 2003-01-14
US20020148587A1 (en) 2002-10-17
DE50205151D1 (de) 2006-01-12
AT409768B (de) 2002-11-25
US6821390B2 (en) 2004-11-23
EP1245725B1 (fr) 2005-12-07
ATE312232T1 (de) 2005-12-15

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