EP0831173A2 - Suction box with dimensioning slider - Google Patents

Suction box with dimensioning slider Download PDF

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Publication number
EP0831173A2
EP0831173A2 EP97115324A EP97115324A EP0831173A2 EP 0831173 A2 EP0831173 A2 EP 0831173A2 EP 97115324 A EP97115324 A EP 97115324A EP 97115324 A EP97115324 A EP 97115324A EP 0831173 A2 EP0831173 A2 EP 0831173A2
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EP
European Patent Office
Prior art keywords
belt
suction
suction box
extension
filler
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
EP97115324A
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German (de)
French (fr)
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EP0831173A3 (en
EP0831173B1 (en
Inventor
Bruno Feiler
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Voith Patent GmbH
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Voith Sulzer Papiermaschinen GmbH
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Publication of EP0831173A2 publication Critical patent/EP0831173A2/en
Publication of EP0831173A3 publication Critical patent/EP0831173A3/en
Application granted granted Critical
Publication of EP0831173B1 publication Critical patent/EP0831173B1/en
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    • 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
    • D21F1/48—Suction apparatus
    • D21F1/52—Suction boxes without rolls
    • D21F1/523—Covers thereof

Definitions

  • the invention relates to a suction box for a machine Manufacture of a fibrous web, e.g. Paper web, in detail with the features specified in the preamble of claim 1.
  • a suction box of a similar design is known from DE-PS 1937740. (file PA 02953)
  • Such a suction box is used, for example, in a paper making machine for dewatering a paper web that is on a sieve belt or between two sieve belts is.
  • the sieve belt or sieve belts run or run together with the paper web to be drained over the suction box, so that the negative pressure prevailing in the suction box leads to drainage the paper web causes.
  • the suction box has at least two support strips, which with the Sieve belt (or with one of the two sieve belts) in contact come. There is a suction slot between every two support strips.
  • the length of the suction slots (and thus the length of the suction zone) is determined by two sealing strips.
  • the fillers are at each end of the Suction box (i.e. in the two edge zones of the sieve belt) between provided filler pieces sealingly fitted to the support strips, so that these fillers determine the length of the suction zone. If necessary, at least a part of these filler pieces can be adjusted transversely to the tape running direction, namely for the purpose Change the length of the suction zone.
  • the fillers generally referred to as a "format pusher".
  • the permeability of the filler extensions for fluid can be implemented in different ways: For example the extensions, seen from above, can be wedge-shaped train and / or you can perforate the extensions.
  • Figure 1 shows a suction box in a cross section along the line I-I of Figure 2.
  • FIG. 2 is a top view of the suction box according to FIG 1.
  • the suction box designated overall by 10, essentially consists from a trough 11, from a few arranged transversely on it Support rods 13 and from support strips 20, which extend in the longitudinal direction of trough 11, i.e. transverse to the running direction P of the sieve belt 9 extend.
  • the running sieve belt 9 comes with the heads the support bars in direct contact.
  • Fasteners, with which the support strips 20 are attached to the support rods 13 are designated by 25, 26, 27. Between the ends of the Support rods 13, sealing strips 16 are provided.
  • the width of the belt 9 is designated B. and the length of the remaining between the support strips 20 Suction slots with L; this is the so-called suction zone length. It is determined by fillers 31, 32, 33, which between the support strips 20 are fitted sealingly.
  • Each of the fillers 31 to 33 has an extension 31 'to 33 'on. These extensions extend from End of the suction zone length L, towards the center of the machine there. Each of the filler pieces and the associated extensions come in just like the support strips 20 with the band 9 direct contact. However, the extensions are in the Top view according to Figure 2 seen, either tapered wedge-shaped (see 31 'or 32') or they are perforated (see 33 '). It is also possible, both a wedge-shaped taper to provide a perforation.

Abstract

An der Oberfläche eines Saugkastens für eine Papier- oder Kartonherstellungsmaschine sind Leisten quer zur Sieblaufrichtung zur Entwässerung der Fasersuspension angebracht. In den Lücken zwischen den Leisten sind quer zur Sieblaufrichtung verschiebbare Füllstücke angeordnet. Auf diese Weise entstehen einstellbare Saugschlitze. Die Füllstücke weisen zur Maschinenmitte hin eine Durchlässigkeit für Fluide auf, indem sie verjüngend gestaltet und/oder perforiert sind.

Figure 00000001
On the surface of a suction box for a paper or cardboard manufacturing machine, strips are attached transversely to the direction of wire travel for dewatering the fiber suspension. In the gaps between the strips, filler pieces which can be displaced transversely to the direction of wire travel are arranged. In this way, adjustable suction slots are created. The fillers have a permeability to fluids towards the center of the machine in that they are tapered and / or perforated.
Figure 00000001

Description

Die Erfindung betrifft einen Saugkasten für eine Maschine zur Herstellung einer Faserstoffbahn, z.B. Papierbahn, im einzelnen mit den im Oberbegriff des Anspruches 1 angegebenen Merkmalen. Ein Saugkasten ähnlicher Bauart ist bekannt aus DE-PS 1937740. (Akte PA 02953)The invention relates to a suction box for a machine Manufacture of a fibrous web, e.g. Paper web, in detail with the features specified in the preamble of claim 1. A suction box of a similar design is known from DE-PS 1937740. (file PA 02953)

Ein solcher Saugkasten dient beispielsweise in einer Papierherstellungsmaschine zum Entwässern einer Papierbahn, die auf einem Siebband oder zwischen zwei Siebbändern gebildet worden ist. Das Siebband bzw. die Siebbänder läuft bzw. laufen zusammen mit der zu entwässernden Papierbahn über den Saugkasten, so daß der im Saugkasten herrschende Unterdruck eine Entwässerung der Papierbahn bewirkt.Such a suction box is used, for example, in a paper making machine for dewatering a paper web that is on a sieve belt or between two sieve belts is. The sieve belt or sieve belts run or run together with the paper web to be drained over the suction box, so that the negative pressure prevailing in the suction box leads to drainage the paper web causes.

Der Saugkasten hat wenigstens zwei Stützleisten, die mit dem Siebband (bzw. mit einem der beiden Siebbänder) in Kontakt kommen. Zwischen je zwei Stützleisten befindet sich ein Saugschlitz. Gemäß DE'740 ist die Länge der Saugschlitze (und somit die Länge der Saugzone) durch zwei Dichtleisten bestimmt. Bei anderen bekannten Konstruktionen sind an jedem Ende des Saugkastens (d.h. in den beiden Randzonen des Siebbandes) zwischen den Stützleisten dichtend eingepaßte Füllstücke vorgesehen, so daß diese Füllstücke die Saugzonen-Länge bestimmen. Falls erforderlich, kann zumindest ein Teil dieser Füllstücke quer zur Band-Laufrichtung verstellt werden, nämlich zwecks Änderung der Saugzonen-Länge. In diesem Fall werden die Füllstücke im allgemeinen als "Formatschieber" bezeichnet.The suction box has at least two support strips, which with the Sieve belt (or with one of the two sieve belts) in contact come. There is a suction slot between every two support strips. According to DE'740, the length of the suction slots (and thus the length of the suction zone) is determined by two sealing strips. In other known constructions are at each end of the Suction box (i.e. in the two edge zones of the sieve belt) between provided filler pieces sealingly fitted to the support strips, so that these fillers determine the length of the suction zone. If necessary, at least a part of these filler pieces can be adjusted transversely to the tape running direction, namely for the purpose Change the length of the suction zone. In this case, the fillers generally referred to as a "format pusher".

Die oben erwähnte Druckschrift DE'740 befaßt sich u.a. mit dem Problem, den am Siebband und an den Stützleisten auftretenden Verschleiß zu verringern. Diese Verschleißerscheinungen resultieren bekanntlich aus der Tatsache, daß das Siebband (oder in anderen Fällen ein Filzband) in direktem Kontakt über die Stützleisten des Saugkastens läuft. Gemäß DE'740 wird dieser Verschleiß dadurch verringert, daß man den Abstand zwischen den Stützleisten möglichst weitgehend verringert. Die Praxis zeigt jedoch, daß speziell in den Randbereichen des Siebbandes immer noch gelegentlich ein vorzeitiger Sieb-Verschleiß stattfindet. Der Erfindung liegt deshalb die Aufgabe zugrunde, Maßnahmen zu treffen, durch die ein vorzeitiger Verschleiß des Sieb- oder Filzbandes, insbesondere in den Randbereichen, möglichst weitgehend verringert wird.The above-mentioned document DE'740 deals, inter alia, with with the Problem that occurs on the sieve belt and on the support strips Reduce wear. These signs of wear result It is known from the fact that the sieve belt (or in other cases a felt tape) in direct contact via the Support strips of the suction box are running. According to DE'740 this is Wear is reduced by changing the distance between the support strips reduced as much as possible. The practice shows, however, that especially in the edge areas of the sieve belt premature sieve wear still occurs occasionally. The invention is therefore based on the object of measures through which premature wear of the Screen or felt belt, especially in the edge areas, if possible is largely reduced.

Diese Aufgabe wird durch die im kennzeichnenden Teil des Anspruches 1 angegebenen Merkmale gelöst. Durch die sich in Richtung zur Maschinenmitte hin erstreckenden Verlängerungen der Füllstücke werden die Randbereiche des Siebbandes (oder des Filzbandes) besser als bisher unterstützt. Es wird also vermieden, daß die Randbereiche des Bandes unter der Wirkung des Unterdruckes in den Saugschlitz bzw. in die Saugschlitze hineingezogen werden. Gemäß der Erfindung ist aber dafür gesorgt, daß die Verlängerungen der Füllstücke durchlässig sind für Fluid, also insbesondere für Luft und Wasser. Hierdurch wird erreicht, daß trotz der verbesserten Abstützung der Randbereiche des Sieb- oder Filzbandes die (quer zur Bahnlaufrichtung gemessene) Länge der Saugzone nicht verringert wird.This object is achieved by the in the characterizing part of the claim 1 specified features solved. Through the in Extensions extending towards the center of the machine of the filling pieces are the edge areas of the sieve belt (or of the felt ribbon) better than before. So it will avoided the edge areas of the tape under the action of the negative pressure in the suction slot or in the suction slots be drawn in. According to the invention, however, it is ensured that that the extensions of the filler pieces are permeable for fluid, in particular for air and water. Hereby is achieved in spite of the improved support of the edge areas the screen or felt belt (across the web direction measured) length of the suction zone is not reduced.

Die Durchlässigkeit der Füllstück-Verlängerungen für Fluid kann auf unterschiedliche Weise realisiert werden: Beispielsweise kann man die Verlängerungen, von oben gesehen, keilförmig ausbilden und/oder man kann die Verlängerungen perforieren.The permeability of the filler extensions for fluid can be implemented in different ways: For example the extensions, seen from above, can be wedge-shaped train and / or you can perforate the extensions.

Ausführungsbeispiele der Erfindung werden nachfolgend an Hand der beigefügten Zeichnung beschrieben.Exemplary embodiments of the invention are described below the attached drawing.

Die Figur 1 zeigt einen Saugkasten in einem Querschnitt entlang der Linie I-I der Figur 2.Figure 1 shows a suction box in a cross section along the line I-I of Figure 2.

Die Figur 2 ist eine Draufsicht auf den Saugkasten nach Figur 1. FIG. 2 is a top view of the suction box according to FIG 1.

Der insgesamt mit 10 bezeichnete Saugkasten besteht im wesentlichen aus einem Trog 11, aus einigen darauf quer angeordneten Tragstäben 13 und aus Stützleisten 20, die sich in Längsrichtung des Troges 11, d.h. quer zur Laufrichtung P des Siebbandes 9 erstrecken. Das laufende Siebband 9 kommt mit den Köpfen der Stützleisten unmittelbar in Kontakt. Befestigungselemente, mit denen die Stützleisten 20 auf den Tragstäben 13 befestigt sind, sind mit 25, 26, 27 bezeichnet. Zwischen den Enden der Tragstäbe 13 sind Dichtleisten 16 vorgesehen.The suction box, designated overall by 10, essentially consists from a trough 11, from a few arranged transversely on it Support rods 13 and from support strips 20, which extend in the longitudinal direction of trough 11, i.e. transverse to the running direction P of the sieve belt 9 extend. The running sieve belt 9 comes with the heads the support bars in direct contact. Fasteners, with which the support strips 20 are attached to the support rods 13 are designated by 25, 26, 27. Between the ends of the Support rods 13, sealing strips 16 are provided.

In Figur 2 ist die Breite des Siebbandes 9 mit B bezeichnet und die Länge der zwischen den Stützleisten 20 verbleibenden Saugschlitze mit L; dies ist die sogenannte Saugzonen-Länge. Sie wird bestimmt durch Füllstücke 31, 32, 33, welche zwischen die Stützleisten 20 dichtend eingepaßt sind.In Figure 2, the width of the belt 9 is designated B. and the length of the remaining between the support strips 20 Suction slots with L; this is the so-called suction zone length. It is determined by fillers 31, 32, 33, which between the support strips 20 are fitted sealingly.

Jedes der Füllstücke 31 bis 33 weist eine Verlängerung 31' bis 33' auf. Diese Verlängerungen erstrecken sich, ausgehend vom Ende der Saugzonen-Länge L, in Richtung zur Maschinenmitte hin. Jedes der Füllstücke und die dazugehörenden Verlängerungen kommen genauso wie die Stützleisten 20 mit dem Band 9 in direkten Kontakt. Jedoch sind die Verlängerungen, in der Draufsicht gemäß Figur 2 gesehen, entweder keilförmig verjüngt (siehe 31' oder 32') oder sie sind perforiert (siehe 33'). Es ist auch möglich, sowohl eine keilförmige Verjüngung als auch eine Perforation vorzusehen.Each of the fillers 31 to 33 has an extension 31 'to 33 'on. These extensions extend from End of the suction zone length L, towards the center of the machine there. Each of the filler pieces and the associated extensions come in just like the support strips 20 with the band 9 direct contact. However, the extensions are in the Top view according to Figure 2 seen, either tapered wedge-shaped (see 31 'or 32') or they are perforated (see 33 '). It is also possible, both a wedge-shaped taper to provide a perforation.

Falls die Saugzonen-Länge verändert werden muß, kann man die Position der Füllstücke 31 bis 33 zusammen mit den Verlängerungen 31' bis 33' parallel zu den Stützleisten 20 verstellen.If the length of the suction zone has to be changed, you can use the Position of the filler pieces 31 to 33 together with the extensions Adjust 31 'to 33' parallel to the support strips 20.

Claims (4)

Saugkasten (10) für eine Maschine zur Herstellung einer Faserstoffbahn, z.B. Papierbahn, mit den folgenden Merkmalen: a) der Saugkasten (10) erstreckt sich quer zur Laufrichtung eines porösen Bandes, z.B. eines Siebbandes (9), Filzbandes oder dgl. und ist zu diesem Band hin offen, um auf das Band (und ggf. auf die mit dem Band laufende Bahn) eine Saugwirkung auszuüben; b) der Saugkasten (10) hat wenigstens zwei das laufende Band (9) berührende Stützleisten (20), die sich quer zur Band-Laufrichtung (P) erstrecken und einen Saugschlitz begrenzen; c) in den beiden Randzonen des Bandes (9) ist der Saugschlitz durch je ein Füllstück (31-33) begrenzt, das zwischen die Stützleisten (20) dichtend eingepaßt ist, wobei die Füllstücke eine Saugzonen-Länge (L) bestimmen, die kleiner ist als die Breite (B) des Bandes; d) dadurch gekennzeichnet, daß jedes Füllstück (31-33), ausgehend vom Ende der Saugzonen-Länge (L), eine Verlängerung (31'-33') aufweist, die sich in Richtung zur Maschinenmitte hin erstreckt, wobei die Verlängerung das Band (9) berührt und durchlässig für Fluid (Luft, Wasser) ist. Suction box (10) for a machine for producing a fibrous web, for example paper web, with the following features: a) the suction box (10) extends transversely to the direction of travel of a porous belt, for example a sieve belt (9), felt belt or the like. And is open to this belt in order to on the belt (and possibly on the web running with the belt ) exert a suction effect; b) the suction box (10) has at least two support strips (20) touching the running belt (9), which extend transversely to the belt running direction (P) and delimit a suction slot; c) in the two edge zones of the band (9) the suction slot is limited by a filler (31-33), which is fitted between the support strips (20) sealingly, the fillers determine a suction zone length (L), which is smaller is as the width (B) of the band; d) characterized in that each filler (31-33), starting from the end of the suction zone length (L), has an extension (31'-33 ') extending towards the center of the machine, the extension being the belt (9) touched and permeable to fluid (air, water). Saugkasten nach Anspruch 1, dadurch gekennzeichnet, daß die Verlängerung (31' oder 32') von oben gesehen, keilförmig ist. Suction box according to claim 1, characterized in that the extension (31 'or 32') seen from above, wedge-shaped is. Saugkasten nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Verlängerung (33') perforiert ist.Suction box according to claim 1 or 2, characterized in that that the extension (33 ') is perforated. Saugkasten nach einem der Ansprüche 1-3, dadurch gekennzeichnet, daß die Füllstücke (31-33) einschließlich der Verlängerungen (31'-33') quer zur Band-Laufrichtung (P) verstellbar sind, zwecks Änderung der Saugzonen-Länge (L).Suction box according to one of claims 1-3, characterized in that the filler pieces (31-33) including the Extensions (31'-33 ') transverse to the tape running direction (P) are adjustable to change the length of the suction zone (L).
EP97115324A 1996-09-13 1997-09-04 Suction box Expired - Lifetime EP0831173B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29615823U 1996-09-13
DE29615823U DE29615823U1 (en) 1996-09-13 1996-09-13 Suction box

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EP0831173A2 true EP0831173A2 (en) 1998-03-25
EP0831173A3 EP0831173A3 (en) 1998-04-01
EP0831173B1 EP0831173B1 (en) 2002-02-27

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EP97115324A Expired - Lifetime EP0831173B1 (en) 1996-09-13 1997-09-04 Suction box

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US (1) US5858175A (en)
EP (1) EP0831173B1 (en)
AT (1) ATE213795T1 (en)
CA (1) CA2215482C (en)
DE (2) DE29615823U1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1260633A2 (en) * 2001-05-15 2002-11-27 Voith Paper Patent GmbH Machine for producing a fibrous web from a fibre suspension as well as process and system for monitoring a dewatering member
EP1300509A1 (en) * 2001-10-04 2003-04-09 Voith Paper Patent GmbH Foil arrangement in a suction box
DE10163575A1 (en) * 2001-12-21 2003-07-03 Voith Paper Patent Gmbh Fibrous web-manufacturing apparatus comprises temperature sensor connected to removable edge piece connected to format slide and/or drainage rail
EP1719835A1 (en) * 2005-05-04 2006-11-08 Voith Patent GmbH Machine for manufacturing a fibrous web

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19646792A1 (en) * 1996-11-13 1998-05-14 Voith Sulzer Papiermasch Gmbh Paper-making machine suction box
CA2546273C (en) * 2003-11-17 2011-02-22 Astenjohnson, Inc. Shaped slot vacuum dewatering box cover
FI120205B (en) * 2007-03-28 2009-07-31 Vaahto Oy Method and apparatus for limiting mass flow from a headbox in a paper or board machine
DE102007000258A1 (en) 2007-05-08 2008-11-13 Voith Patent Gmbh Drainage device for fibrous web e.g. paper, production machine, has drainage strips arranged fixedly on common support construction, where common support construction is exchangeably arranged on underside of box-shaped base
CN103911898A (en) * 2014-03-14 2014-07-09 常熟鼎天赫机械有限公司 High-efficiency dehydration box
CN109868672A (en) * 2017-12-01 2019-06-11 金红叶纸业集团有限公司 Suction box, paper making equipment and papermaking process
DE102018118884A1 (en) * 2018-08-03 2020-02-06 Voith Patent Gmbh Device for dewatering a wet-laid nonwoven web

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3265560A (en) * 1964-01-20 1966-08-09 Kimberly Clark Co Suction box cover for a papermaking machine
US4957598A (en) * 1988-03-29 1990-09-18 Glauco Corbellini Suction box cover with modular components

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DE233618C (en) *
US4315799A (en) * 1980-02-15 1982-02-16 Albany International Corp. Adjustable deckle
US5076894A (en) * 1990-05-04 1991-12-31 Simmons Holt W Suction box apparatus with composite cover elements mounted in slots on cross braces

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3265560A (en) * 1964-01-20 1966-08-09 Kimberly Clark Co Suction box cover for a papermaking machine
US4957598A (en) * 1988-03-29 1990-09-18 Glauco Corbellini Suction box cover with modular components

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1260633A2 (en) * 2001-05-15 2002-11-27 Voith Paper Patent GmbH Machine for producing a fibrous web from a fibre suspension as well as process and system for monitoring a dewatering member
US6752909B2 (en) 2001-05-15 2004-06-22 Voith Patent Gmbh Machine for producing a fibrous web from a fibrous suspension as well as a process and system for monitoring a drainage element
US6821389B2 (en) 2001-05-15 2004-11-23 Voith Paper Patent Gmbh Process for monitoring a drainage element
EP1260633A3 (en) * 2001-05-15 2005-09-07 Voith Paper Patent GmbH Machine for producing a fibrous web from a fibre suspension as well as process and system for monitoring a dewatering member
EP1300509A1 (en) * 2001-10-04 2003-04-09 Voith Paper Patent GmbH Foil arrangement in a suction box
DE10163575A1 (en) * 2001-12-21 2003-07-03 Voith Paper Patent Gmbh Fibrous web-manufacturing apparatus comprises temperature sensor connected to removable edge piece connected to format slide and/or drainage rail
EP1719835A1 (en) * 2005-05-04 2006-11-08 Voith Patent GmbH Machine for manufacturing a fibrous web

Also Published As

Publication number Publication date
EP0831173A3 (en) 1998-04-01
DE59706481D1 (en) 2002-04-04
DE29615823U1 (en) 1996-10-31
EP0831173B1 (en) 2002-02-27
US5858175A (en) 1999-01-12
CA2215482C (en) 2005-11-15
CA2215482A1 (en) 1998-03-13
ATE213795T1 (en) 2002-03-15

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