EP1101862A2 - Dispositif de pressage - Google Patents

Dispositif de pressage Download PDF

Info

Publication number
EP1101862A2
EP1101862A2 EP00122518A EP00122518A EP1101862A2 EP 1101862 A2 EP1101862 A2 EP 1101862A2 EP 00122518 A EP00122518 A EP 00122518A EP 00122518 A EP00122518 A EP 00122518A EP 1101862 A2 EP1101862 A2 EP 1101862A2
Authority
EP
European Patent Office
Prior art keywords
press
suction
arrangement according
roller
press arrangement
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
EP00122518A
Other languages
German (de)
English (en)
Other versions
EP1101862B1 (fr
EP1101862A3 (fr
Inventor
Wolfgang Mayer
Hans Prinzing
Dirk Thomas
Ingolf Cedra
Thomas Augscheller
Roland Mayer
Gerhard Kotitschke
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
Priority claimed from DE1999155030 external-priority patent/DE19955030A1/de
Priority claimed from DE2000130048 external-priority patent/DE10030048A1/de
Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1101862A2 publication Critical patent/EP1101862A2/fr
Publication of EP1101862A3 publication Critical patent/EP1101862A3/fr
Application granted granted Critical
Publication of EP1101862B1 publication Critical patent/EP1101862B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D21F3/04—Arrangements thereof
    • D21F3/045—Arrangements thereof including at least one extended press nip
    • 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
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/04—Arrangements thereof

Definitions

  • the invention relates to a press arrangement for dewatering a paper, cardboard, Tissue or another fibrous web in a machine for manufacturing and / or Refining the same, consisting of at least one, of two against each other pressed press rolls formed press nip, through the next to the fibrous web at least one above and one below the fibrous web Drainage belt runs, the fibrous web in one after the press nip subsequent guiding route with the upper and lower Drainage belt is in contact.
  • a sandwich guide is necessary the still moist fibrous web safely and stably lead out of the press nip can.
  • Fibrous webs can require long guide distances. This is with a considerable constructive and energetic effort for the suction box connected.
  • the negative pressures that can be achieved are generally not sufficient, in order to have a positive effect on the fibrous web.
  • the object of the invention is therefore to provide a good press arrangement Leadership and the least possible rewetting of the fibrous web improve.
  • the object was achieved in that the lower Drainage belt in the area of the guide line across at least one across Fibrous web extending suction device is guided, which with a Vacuum source is connected, the vacuum preferably between 0.1 and is 0.4 bar.
  • the negative pressure increases the contact pressure Fibrous web on the lower drainage belt and the detachment from the upper Drainage belt so that the upper drainage belt at the end of the Guide path can be led away and the fibrous web after the Guideway adheres well to the lower drainage belt.
  • the routing of the upper dewatering band minimizes rewetting.
  • the suction device viewed only over part of the guiding route in the direction of web travel, extends and preferably ends before the end of the guide route. This results from the fact that the suction device's effect on rewetting and guidance of the fibrous web also after the suction device at least up to Sufficient end of the guide route is preserved.
  • suction device is preferred is designed as a suction box in a range between 40 and 80 cm the press nip begins.
  • the suction box should be pivoted.
  • the suction device has one or more compared to the drainage belt Suction slots.
  • the width of the suction slots is preferably limited to 10-30 mm, so that the drainage belt with the fibrous web is not too far into the Suction slits is pulled. It can also be advantageous if the Suction slots are of different widths.
  • the Suction slots are of different widths.
  • For cleaning the inside of the suction box and / or the suction slots can be the arrangement of a spray tube in the suction box be beneficial.
  • the route has i. a. a length between 100 and 180 cm.
  • To the effectiveness of the sucked To improve roller water and the air boundary layer should be in the untwisted Area from the vacuumed roller.
  • the suction device At the beginning and / or at the end of the suction device, one should be transverse to the Fibrous web running and in contact with the lower drainage belt Standing squeegee can be arranged for water drainage.
  • the negative pressure of the Suction device increases the pressure of the lower drainage belt on the Squeegees so that they drain water from the drainage belt very efficiently can strip and lead away.
  • the squeegee can also be from Drain off the centrifuged water from the roller jacket of the lower press roller.
  • the squeegee at the beginning of the suction device can, advantageously with the suction device together, part of a, assigned to the lower press roller Be water collecting device, which the thrown and stripped Water collects and drains.
  • the squeegee, a separate baffle or baffle for removing the the lower press roll is thrown off water.
  • To humidify the centrifuged water of the upper press roller should also prevent the upper drainage belt after the press nip Water absorption device, preferably assigned in the form of a water channel his.
  • the press section is part of a machine for producing a fibrous web 1 in Form a paper web and serves to drain it.
  • the figure shows this the or one of several press nips, which of two against each other pressed and, for example, approximately arranged press rollers 2, 3 is formed.
  • the fibrous web 1 In addition to the fibrous web 1, one is arranged above 4 and below 5 water and air permeable, endless all-round drainage belt in shape a press felt to absorb the squeezed water through the press nip guided. Because of the high web speed and the strong adhesion of the The fibrous web 1 on both drainage belts 4, 5 remains the fibrous web 1 after the press nip in a subsequent guide section 6 also with both Drainage belts 4.5 in contact.
  • the guide section 6 has a length of approx. 140 cm.
  • the lower drainage belt 5 is in a part of the guide section 6 via a transversely to the fibrous web 1 running suction device 7, which over a Port 15 is connected to a vacuum source.
  • the suction device 6 begins approx. 60 cm after the press nip.
  • the vacuum acts through several suction slots Suction device 7 on the lower drainage belt 5 and thus hampers one Remoisten the fibrous web 1 from this dewatering belt 5, wherein the suction slots have the same width.
  • the liability on lower drainage belt 5 increased and a detachment of the fibrous web 1 from upper drainage belt 4 causes.
  • the length of the web running direction 8 short suction device 7 with respect to the guide section 6 represents a good one Compromise between effort and effect.
  • the fibrous web 1 runs only with the lower one Drainage belt 5 further.
  • the scraper 19 is about an air hose running across the machine to the jacket of the vacuumed Roller pressed.
  • the suction device 7 At the beginning and at the end of the suction device 7 there is one each transverse to the fibrous web 1 running and in contact with the lower drainage belt 5 Squeegee 9 arranged for water drainage.
  • the vacuum of the suction device 7 increases the pressure of the lower drainage belt 5 on the squeegees 9, so that they drain away more water from the lower drainage belt 5 can.
  • the squeegees 9 have a comparative effect on the Water content in the lower dewatering band 5, which is advantageous for that Moisture-cross profile of the fibrous web 1 affects.
  • the in the web running direction 8 first squeegee 9 is together with the Suction device 7 part of a, the centrifuged and stripped water receiving water collecting device 17. This also takes that from one Scraper 16 scraped water from the lower press roll 3. Besides, will here also shown the possibility of arranging a baffle 18, which before the first squeegee 9 is arranged and the water thrown off lower press roll 3 derives.
  • a water absorption device 11 in the form of a known Gully provided.
  • the roll jackets 12 of both press rolls 2, 3 are supported by the support elements 13, 14 pressed against each other.
  • the Roll jacket 12 of the upper press roll 2 is flexible and has it Support element 13 of the upper press roller 2 has a concave contact surface.
  • the roll jacket 12 of the lower press roll 3 is relatively dimensionally stable and the contact surface of this support element 14 is convex.
  • this is only exemplary to see.

Landscapes

  • Paper (AREA)
EP20000122518 1999-11-16 2000-10-14 Dispositif de pressage Expired - Lifetime EP1101862B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE1999155030 DE19955030A1 (de) 1999-11-16 1999-11-16 Verfahren zum Überführen einer zu behandelnden Faserstoffbahn
DE19955030 1999-11-16
DE10030048 2000-06-19
DE2000130048 DE10030048A1 (de) 2000-06-19 2000-06-19 Pressanordnung

Publications (3)

Publication Number Publication Date
EP1101862A2 true EP1101862A2 (fr) 2001-05-23
EP1101862A3 EP1101862A3 (fr) 2001-11-07
EP1101862B1 EP1101862B1 (fr) 2007-04-11

Family

ID=26006138

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000122518 Expired - Lifetime EP1101862B1 (fr) 1999-11-16 2000-10-14 Dispositif de pressage

Country Status (2)

Country Link
EP (1) EP1101862B1 (fr)
DE (1) DE50014234D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1234911A2 (fr) * 2001-02-22 2002-08-28 Voith Paper Patent GmbH Profil sens travers de la humidité
CN113521632A (zh) * 2021-07-12 2021-10-22 曾翔 一种消防水带卷收装置
CN114234570A (zh) * 2021-11-09 2022-03-25 衡阳同禧透气包装有限公司 一种包装纸生产用烘干装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5888354A (en) * 1996-04-04 1999-03-30 Valmet Corporation Transfer of a web in a paper machine from a two-felt press nip to a dryer section
US5972170A (en) * 1996-10-31 1999-10-26 Voith Sulzer Papiermaschinen Gmbh Suction box

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5888354A (en) * 1996-04-04 1999-03-30 Valmet Corporation Transfer of a web in a paper machine from a two-felt press nip to a dryer section
US5972170A (en) * 1996-10-31 1999-10-26 Voith Sulzer Papiermaschinen Gmbh Suction box

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1234911A2 (fr) * 2001-02-22 2002-08-28 Voith Paper Patent GmbH Profil sens travers de la humidité
EP1234911A3 (fr) * 2001-02-22 2003-12-10 Voith Paper Patent GmbH Profil sens travers de la humidité
CN113521632A (zh) * 2021-07-12 2021-10-22 曾翔 一种消防水带卷收装置
CN113521632B (zh) * 2021-07-12 2022-09-13 曾翔 一种消防水带卷收装置
CN114234570A (zh) * 2021-11-09 2022-03-25 衡阳同禧透气包装有限公司 一种包装纸生产用烘干装置

Also Published As

Publication number Publication date
DE50014234D1 (de) 2007-05-24
EP1101862B1 (fr) 2007-04-11
EP1101862A3 (fr) 2001-11-07

Similar Documents

Publication Publication Date Title
EP0509199B1 (fr) Section de presse pour une machine à papier
DE2331313C3 (de) Langsieb-Papiermaschine
EP0640716B1 (fr) Aménagement pour guider une bande fibreuse dans un séchoir
EP1158091A1 (fr) Section de pressage pour une machine à papier
EP1101862B1 (fr) Dispositif de pressage
DE10030048A1 (de) Pressanordnung
DE4301751C2 (de) Verfahren zum Ablösen einer laufenden Faserstoffbahn von zwei endlosen Siebbändern
DE19802853A1 (de) Pressenanordnung
EP0803604B1 (fr) Presse humide
EP0931876B1 (fr) Section de pressage
DE19702574A1 (de) Pressenanordnung
EP0887463B1 (fr) Dispositif pour la déshydratation d'un feutre pour papeterie
DE102005007276A1 (de) Pressanordnung
EP1586700B1 (fr) Machine à papier
DE10055708A1 (de) Verfahren und Vorrichtung zur Entwässerung
DE19810800A1 (de) Pressenanordnung
DE10231074A1 (de) Pressanordnung
EP1138821A2 (fr) Dispositif et procédé d'évacuation d'une bande fibreuse
DE2501534C3 (de) Papiermaschine
DE19724220A1 (de) Vorrichtung zum Konditionieren und Reinigen eines umlaufenden Filzbandes
AT411366B (de) Vorrichtung zur entwässerung von faserstoffbahnen
EP0950756A2 (fr) Interstice de pressage
DE1302022B (de) Walzenpresse fuer Papiermaschinen
DE10022605A1 (de) Pressenpartie
DE10314296A1 (de) Bahnübergabe

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

Kind code of ref document: A2

Designated state(s): DE FI SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20020507

AKX Designation fees paid

Free format text: DE FI SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VOITH PATENT GMBH

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FI SE

REF Corresponds to:

Ref document number: 50014234

Country of ref document: DE

Date of ref document: 20070524

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20080114

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20091014

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20101022

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101015

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20111013

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130501

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50014234

Country of ref document: DE

Effective date: 20130501

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121014