DE10333139A1 - Press section to extract water from a wet web, in a machine for the production/finishing of paper/cardboard/tissue, has a suction roller and a suction unit to take the web with a fourdrinier and blanket between them - Google Patents
Press section to extract water from a wet web, in a machine for the production/finishing of paper/cardboard/tissue, has a suction roller and a suction unit to take the web with a fourdrinier and blanket between them Download PDFInfo
- Publication number
- DE10333139A1 DE10333139A1 DE2003133139 DE10333139A DE10333139A1 DE 10333139 A1 DE10333139 A1 DE 10333139A1 DE 2003133139 DE2003133139 DE 2003133139 DE 10333139 A DE10333139 A DE 10333139A DE 10333139 A1 DE10333139 A1 DE 10333139A1
- Authority
- DE
- Germany
- Prior art keywords
- press section
- band
- fibrous web
- web
- press
- 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- Withdrawn
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 title abstract description 3
- 239000011111 cardboard Substances 0.000 title abstract 2
- 239000011087 paperboard Substances 0.000 title abstract 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
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
- D21F2/00—Transferring continuous webs from wet ends to press sections
Landscapes
- Paper (AREA)
Abstract
Description
Die Erfindung betrifft eine Pressenpartie mit zumindest einem Preßspalt zur Entwässerung einer Papier-, Karton-, Tissue- oder einer anderen Faserstoffbahn in einer Maschine zur Herstellung und/oder Veredlung derselben, durch den die Faserstoffbahn gemeinsam mit zumindest einem endlos umlaufenden, luftdurchlässigen Band geführt wird.The The invention relates to a press section with at least one press nip for drainage a paper, board, tissue or other fibrous web in a machine for the production and / or refinement thereof, through which the fibrous web together with at least one endless circumferential, air-permeable Band led becomes.
Derartige Anordnungen sind seit langem in vielfältiger Ausführung bekannt. Verbesserungswürdig ist dabei jedoch immer noch das Verhältnis zwischen Aufwand und Trockengehaltssteigerung.such Arrangements have long been known in a variety of designs. Is worthy of improvement but still the ratio between effort and dry content increase.
Die Aufgabe der Erfindung ist es daher, den Trockengehalt der Faserstoffbahn mit möglichst geringem Aufwand in der Pressenpartie noch weiter zu steigern.The The object of the invention is therefore the dry content of the fibrous web with as possible little effort in the press section to further increase.
Erfindungsgemäß wurde die Aufgabe dadurch gelöst, dass das Band vor dem Preßspalt gemeinsam mit der außen liegenden Faserstoffbahn an einer, innerhalb der Bandschleife des Bandes angeordneten Saugvorrichtung vorbeigeführt wird.According to the invention was solved the task by that the tape in front of the press nip together with the outside lying fibrous web at one, within the belt loop of Bandes arranged suction device is passed.
Diese Besaugung entzieht dem Band und der Faserstoffbahn Wasser und führt so zu einer Trockengehaltssteigerung innerhalb der Pressenpartie bereits vor derm ersten Preßspalt.These Aspiration removes water from the belt and the fibrous web and thus leads to it a dry content increase within the press section already before the first press nip.
Zur Gewährleistung einer ausreichenden Entwässerung über die Saugvorrichtung sollte der Unterdruck der Saugvorrichtung mindestens 4, vorzugsweise mindestens 6,5 m Wassersäule betragen.to warranty adequate drainage over the Suction device should be the negative pressure of the suction device at least 4, preferably at least 6.5 m of water.
Um eine einfache und geschlossene Führung, bei der die Faserstoffbahn ständig von zumindest einem Band oder einer Walze geführt wird, zu ermöglichen, sollte das Band die Faserstoffbahn vor dem Preßspalt direkt von einem Band einer vorgelagerten Einheit übernehmen.Around a simple and closed guide, at the fibrous web constantly guided by at least one belt or roller, to allow The band should be the fibrous web in front of the press nip directly from a belt take over an upstream unit.
Um einer Rückbefeuchtung der Faserstoffbahn, vom Band ausgehend, zu begegnen, sollte der Abstand zwischen der Übernahme der Faserstoffbahn und der Saugvorrichtung kleiner als 5m, vorzugsweise kleiner als 4m, insbesondere kleiner als 3m sein.Around a remoistening the fibrous web, starting from the tape, should meet the distance between the takeover the fibrous web and the suction device smaller than 5m, preferably less than 4m, in particular less than 3m.
Zur Unterstützung der Bahnübergabe sollte das Band während der Übernahme der Faserstoffbahn eine vorzugsweise besaugte Leitwalze umschlingen.to support the railway delivery should the tape during the takeover the fibrous web wrap around a preferably evacuated guide roll.
Um eine zusätzliche Entwässerung über eine Besaugung bereits vor der Saugvorrichtung realisieren zu können, ist es vorteilhaft, wenn das Band der vorgelagerten Einheit ebenfalls endlos umlaufend und luftdurchlässig ausgeführt ist. Hierzu sollte das Band der vorgelagerten Einheit während der Übergabe der Faserstoffbahn an einer innerhalb der Bandschleife angeordneten Saugeinheit vorbeigeführt werden. Auch hier bewirkt der Unterdruck eine Entwässerung des Bandes der vorgelagerten Einheit und der Faserstoffbahn.Around an additional Drainage over one Be able to realize aspiration before the suction device is It is advantageous if the band of the upstream unit also endlessly circulating and permeable to air accomplished is. This should be the tape of the upstream unit during the transfer the fibrous web disposed at one within the belt loop Suction unit passed by become. Again, the negative pressure causes a drainage the strip of the upstream unit and the fibrous web.
Im allgemeinen handelt es sich bei der vorgelagerten Einheit um einen Former zur Blattbildung, wobei das Band dieser Einheit als Formersieb ausgeführt ist.in the In general, the upstream unit is one Former for sheet formation, the tape of this unit as Formersieb accomplished is.
Vorzugsweise ist das Band der Pressenpartie als Preßfilz ausgeführt.Preferably the band of the press section is designed as a press felt.
Die Saugeinheit des übergebenden Bandes der vorgelagerten Einheit hat vorzugsweise auch zumindest eine separate Randzone, die zur Unterstützung bei der Überführung der Faserstoffbahn mit Vorteil einsetzbar ist.The Suction unit of the transferring Bandes of the upstream unit preferably also has at least a separate edge zone that helps in the transfer of the Fiber web can be used with advantage.
Nachfolgend soll die Erfindung an einem Ausführungsbeispiel näher erläutert werden. In der beigefügten Zeichnung zeigt die Figur einen schematischen Querschnitt durch den Beginn einer Pressenpartie.following the invention is based on an embodiment be explained in more detail. In the accompanying Drawing, the figure shows a schematic cross section through the beginning of a press section.
Die
Faserstoffbahn
Die
Faserstoffbahn
Zur
Unterstützung
der Übergabe
der Faserstoffbahn
Im
Bereich der Übergabe
der Faserstoffbahn
Es
ist jedoch auch möglich,
den Unterdruck dieser Saugeinheit
Zwischen
der Übernahme
der Faserstoffbahn
Diese
Saugvorrichtung
Diese
kurze Entfernung verhindert eine übermäßige Rückbefeuchtung der Faserstoffbahn
Bei
der Saugvorrichtung
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003133139 DE10333139A1 (en) | 2003-07-22 | 2003-07-22 | Press section to extract water from a wet web, in a machine for the production/finishing of paper/cardboard/tissue, has a suction roller and a suction unit to take the web with a fourdrinier and blanket between them |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003133139 DE10333139A1 (en) | 2003-07-22 | 2003-07-22 | Press section to extract water from a wet web, in a machine for the production/finishing of paper/cardboard/tissue, has a suction roller and a suction unit to take the web with a fourdrinier and blanket between them |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10333139A1 true DE10333139A1 (en) | 2005-02-17 |
Family
ID=34071813
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003133139 Withdrawn DE10333139A1 (en) | 2003-07-22 | 2003-07-22 | Press section to extract water from a wet web, in a machine for the production/finishing of paper/cardboard/tissue, has a suction roller and a suction unit to take the web with a fourdrinier and blanket between them |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10333139A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT504832B1 (en) * | 2007-01-22 | 2011-12-15 | Metso Paper Inc | FOR THE MOLDING PART OF A MATERIAL RAIL MANUFACTURING MACHINE, A DETERMINED SYSTEM FOR GUIDING THE LOADING, AND THEREFORE, THE MATERIAL RAILWAY THROUGH ROPE ROLLERS, AND A CORRESPONDING METHOD |
AT522784A4 (en) * | 2020-02-25 | 2021-02-15 | Andritz Ag Maschf | DEVICE AND METHOD FOR MANUFACTURING A FIBER WEB |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4561939A (en) * | 1984-03-26 | 1985-12-31 | Beloit Corporation | Extended nip press arrangement |
US4931143A (en) * | 1984-05-25 | 1990-06-05 | Valmet Oy | Press section with separate press nips in a paper machine |
DE69418155T2 (en) * | 1993-12-08 | 1999-12-16 | Valmet Corp | Press section of a paper machine with a wide nip press |
DE10030048A1 (en) * | 2000-06-19 | 2001-12-20 | Voith Paper Patent Gmbh | Press section for a wet paper/cardboard has a suction box against the lower press belt in the movement path after the roller press gap to prevent extracted water returning to the web |
DE10159115A1 (en) * | 2001-12-01 | 2003-06-18 | Voith Paper Patent Gmbh | press section |
-
2003
- 2003-07-22 DE DE2003133139 patent/DE10333139A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4561939A (en) * | 1984-03-26 | 1985-12-31 | Beloit Corporation | Extended nip press arrangement |
US4931143A (en) * | 1984-05-25 | 1990-06-05 | Valmet Oy | Press section with separate press nips in a paper machine |
DE69418155T2 (en) * | 1993-12-08 | 1999-12-16 | Valmet Corp | Press section of a paper machine with a wide nip press |
DE10030048A1 (en) * | 2000-06-19 | 2001-12-20 | Voith Paper Patent Gmbh | Press section for a wet paper/cardboard has a suction box against the lower press belt in the movement path after the roller press gap to prevent extracted water returning to the web |
DE10159115A1 (en) * | 2001-12-01 | 2003-06-18 | Voith Paper Patent Gmbh | press section |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT504832B1 (en) * | 2007-01-22 | 2011-12-15 | Metso Paper Inc | FOR THE MOLDING PART OF A MATERIAL RAIL MANUFACTURING MACHINE, A DETERMINED SYSTEM FOR GUIDING THE LOADING, AND THEREFORE, THE MATERIAL RAILWAY THROUGH ROPE ROLLERS, AND A CORRESPONDING METHOD |
AT522784A4 (en) * | 2020-02-25 | 2021-02-15 | Andritz Ag Maschf | DEVICE AND METHOD FOR MANUFACTURING A FIBER WEB |
AT522784B1 (en) * | 2020-02-25 | 2021-02-15 | Andritz Ag Maschf | DEVICE AND METHOD FOR MANUFACTURING A FIBER WEB |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: VOITH PATENT GMBH, 89522 HEIDENHEIM, DE |
|
8139 | Disposal/non-payment of the annual fee |