EP1449958B1 - Device for the treatment, in particular for low pressure treatment, of the wire or felt of a papermachine - Google Patents

Device for the treatment, in particular for low pressure treatment, of the wire or felt of a papermachine Download PDF

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Publication number
EP1449958B1
EP1449958B1 EP03450202A EP03450202A EP1449958B1 EP 1449958 B1 EP1449958 B1 EP 1449958B1 EP 03450202 A EP03450202 A EP 03450202A EP 03450202 A EP03450202 A EP 03450202A EP 1449958 B1 EP1449958 B1 EP 1449958B1
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EP
European Patent Office
Prior art keywords
belt
felt
wire
movement
wire belt
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EP03450202A
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German (de)
French (fr)
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EP1449958A1 (en
Inventor
Klaus Bartelmuss
Heinz Bartelmuss
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Individual
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Individual
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Priority to EP10450007A priority Critical patent/EP2210977B1/en
Publication of EP1449958A1 publication Critical patent/EP1449958A1/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
    • D21F1/18—Shaking apparatus for wire-cloths and associated parts
    • D21F1/20—Shaking apparatus for wire-cloths and associated parts in 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
    • D21F1/18—Shaking apparatus for wire-cloths and associated parts
    • 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
    • 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 subject invention relates to a device for at least one screen belt or a felt belt having plant for paper production, which for supporting the screen belt or the felt belt and stripping passing through the screen belt, from the paper pulp or paper belt on this emerging water with a plurality of supporting or stripping elements is formed, on the upper sides of the screen belt or the felt belt comes to rest, to which device optionally a vacuum source is connected and further one of the width of the wire belt or the felt strip correspondingly wide support means for side by side or arranged one behind the other and spaced from each other supporting or stripping is provided, wherein the interstices between the support or stripping the passageways for the emerging from the pulp or the paper tape water or for the form air sucked through the screen belt or the felt belt.
  • Known plants for paper production have a first part of the plant, in which there is at least one screen made of plastic, and a second part of the plant, in which there is at least one felt belt, on which two tapes, which are self-contained, during operation of the plant over Guide rollers or guide rollers are moved in circulation.
  • a pulp is applied, from which the liquid contained in this removed along the movement path of the wire, in particular sucked, is.
  • the paper tape is transferred to at least one downstream felt belt, through which the residual moisture contained in the paper tape is absorbed.
  • Both the wire belt and the felt belt are treated by means arranged in the course of the movement paths devices.
  • a first group of devices the leaked to the underside of the screen belt, leaked from the paper tape liquid is stripped off.
  • the screen belt or the felt belt are acted upon by a suction force. These devices are designed to be highly wear-resistant on their upper side facing the screen belt or the felt belt against the abrasion caused by the movement of the belts.
  • Known such devices are formed over the width of the wire belt or the felt belt with supporting elements, which are provided with a highly wear-resistant material, for example of a ceramic material, to which the wire belt or the felt belt come to rest. If these devices a vacuum source is assigned, it is necessary to bring the suction effect on the largest possible area of the wire belt or the felt belt to the effect.
  • the screen belt or the felt belt should be supported over as large a surface as possible and, on the other hand, those surfaces of the screen belt or felt belt, on which the suction force comes into action, should be as large as possible.
  • a carrying device which is formed with a plurality of juxtaposed or successively arranged and spaced from each other support or stripping elements, wherein the interstices between these support or stripping the passageways for the from the pulp or the paper tape emerging water or for the through the wire belt or the felt belt sucked through air.
  • a carrying device is known from DE 1761174A known.
  • the present invention has for its object to provide a device by which this requirement is met.
  • the support elements are formed on their side facing the wire belt or the felt belt side with respect to the movement of the wire belt or the felt belt wear-resistant pads. Furthermore, support elements relative to the support means with respect to their distance relative to the wire belt or the felt belt be adjustable. In this case, a part of the support elements may be rigidly secured to the support means and a part thereof may be adjustable relative to the support means. According to a preferred embodiment, supporting elements are arranged on opposite the wire belt or the felt belt adjustable support strips. In particular, the support elements are arranged side by side on the direction of movement of the wire belt or the felt belt transversely oriented support strips, wherein at least a portion of the support strips relative to the support device is adjustable.
  • the carrying device is arranged transversely to the direction of movement of the wire belt or the felt belt, wherein it is associated with a drive means by which it is oscillatable transversely to the direction of movement of the wire belt or the felt belt.
  • the support means may form part of a suction box, wherein preferably the suction box is designed to be oscillatable transversely to the direction of movement by means of the drive means.
  • the support elements are preferably designed as pipe pieces, in which at the end of the wire or the felt belt facing elements from a relation to the movement of the wire or the felt belt wear-resistant material are used.
  • the edges of the wire belt or the felt band facing upper sides of the elements can be chamfered, in particular beveled or rounded, be formed and these elements may be formed on the opposite sides with extensions, by means of which they can be inserted into the pipe sections.
  • these elements may be formed with a surface which is curved relative to the wire belt or the felt belt.
  • Fig. 1 shown plant for producing a paper tape 10 consists of two parts of the system, wherein in a first part of a plant made of a plastic screen belt 1 and a following in the direction of movement of the paper tape 10 system part two pairs of felt belts 2 are.
  • the screen belt 1 is associated with a device 3 through which a paper pulp is sprayed onto the screen belt 1 over a width of several meters.
  • the screen belt 1, which is self-contained, is movable in circulation over a plurality of deflection or guide rollers 11.
  • the screen belt 1 three devices 4 are assigned, which will be described below with reference to Fig. 2 are explained.
  • the screen belt 1 is assigned a plurality of suction devices 5, which are described below with reference to FIG 2a are explained.
  • the suction devices 5 are formed with control devices 51, by means of which their mode of operation is controlled.
  • the present in the second part of the system pairs of felt belts 2 are also movable over deflection and guide rollers 21 in circulation.
  • the felt belts 2 are associated with suction devices 6, which are described below with reference to the Fig. 2b are explained.
  • At least one in the respective group of guide and guide rollers is designed as a tension roller 21 a.
  • the devices 4 are formed on its side facing the wire 1 with a triangular cross-section support bar 41, on which there is a support frame 42 for a plurality of in the direction of movement A of the wire 1 and transverse thereto juxtaposed support members 43 and 44 ,
  • the support frame 42 is releasably secured to the support bar 41.
  • the support members 43 are rigidly fixed to the support frame 42, whereas the support members 44 relative to the support frame 42 in its height relative to the wire 1 are adjustable.
  • Both the frame 42 and the support members 43 and 44 are formed on their side facing the wire 1 with layers 42a, 43a and 44a of a highly wear-resistant material, in particular of a ceramic material.
  • the suction devices 5 consist of a over the width of the screen belt 1 extending housing 51, within which there is a channel 50 to which a vacuum source is connected.
  • a support frame 52 is likewise arranged, within which fixedly arranged support elements 53 and adjustable support elements 54 are located.
  • the support frame 52 is also releasably secured to the housing 51.
  • the support frame 52 and the support members 53 and 54 are formed with pads 52a, 53a and 54a of a highly wear-resistant material, in particular of a ceramic material, to which the screen belt 1 comes to rest.
  • the direction of movement of the screen belt 1 is indicated by the arrow A.
  • the devices 6 consist of a over the width of the felt belts 2 extending tubular housing 61, within which there is a channel 60, to which also a vacuum source is connected.
  • a housing 61 On the side facing the felt belt 2 side of this housing 61 is a housing 61 releasably secured to the support frame 62, within which fixedly arranged support members 63 and relative to the felt belt 2 adjustable support members 64 are located.
  • Both the support frame 62 and the support members 63 and 64 are formed with pads 62a, 63a, 64a of a highly wear-resistant material, in particular of a ceramic material.
  • the direction of movement of the felt 2 is indicated by the arrow B.
  • the suction device 5 within the support frame 52 to this rigidly arranged support strips 55 to which the non-adjustable support members 53 are attached, and in their distance from the top of the support frame 52 adjustable support strips 56, to which the adjustable support members 54th are attached.
  • the inner margins 52b of the pads 52a are provided transversely to the direction of movement A of the screen belt 1 with sections running at an acute angle, wherein they are in particular wave-shaped.
  • the support frame 52 is formed at its the edges of the screen belt 1 associated with sides with transverse to these adjustable parts 57, through which the size of the suction opening is adjustable. These parts 57 are provided with highly wear-resistant pads 57 a.
  • the front in the direction of movement A of the wire 1 edge of the support 52a is further formed with a wedge-shaped extension 52b, through which the stripping action of the device 5 is improved.
  • the wire belt 1 is waved during its movement on the support members 53 and 54, whereby it is subjected to tensile loads.
  • the screen belt 1 is further subjected in its movement on the support frame 52 with acting in the plane transverse to the direction of movement A tensile loads.
  • Both of these tensile loads causes the impurities and liquids in the belt 1 to be more easily removed therefrom, so that the drainage of liquid from the pulp is facilitated.
  • the effect of the suction forces exerted on the wire 1 is also significantly improved.
  • turbulences are generated by these tensile loads in the paper tape, by which the quality of the paper tape is affected.
  • the support frame 42 of the device 4 according to Fig.2 has the same structure, although no vacuum source is connected to this device.
  • the suction belts 6 associated with the felt belt 2 have a similar construction. Also, there are within the support frame 62 fixed support rails 65 with support members 63 and opposite the felt 2 adjustable support bars 66 with adjustable support members 64 and the edges 62b of the pads 62a formed transversely to the direction B of the felt belts 2 wave-shaped. As a result of the tensile loads exerted thereon on the felt belts 2, they are stretched in several directions as they move over the suction devices 6, whereby impurities and liquids contained in them are more easily removed and the effect of the suction force exerted on the felt belts 2 is increased.
  • the support members 43 may be formed as pieces of pipe, which are placed on the support strips 45 by means of mutually associated slots, wherein their attachment to the support bars 45 by means of a screw 47 occurs.
  • a cap 48 is inserted in the the wire belt 1 and the felt 2 facing the end of the pipe sections.
  • the caps 48 are formed with cylindrical extensions, by means of which they are inserted into the pipe sections.
  • the caps 48 are made of a highly wear-resistant material, in particular of a ceramic material.
  • the caps 48 may have different spatial configurations. In particular, they can be chamfered, in particular chamfered, or rounded. In addition, these caps 48 may be formed curved relative to the wire 1.
  • the movable support members 44 and the support members 53 and 54 as well as the support members 63 and 64 may be formed in the same manner and fixed to fixed or adjustable support bars.
  • the support frame 52 and 62 can be mounted transversely to the directions of movement A and B of the wire belt 1 and the felt belts 2 slidably.
  • the screen belt 1 and the felt belts 2 are claimed reinforced by acting in several directions tensile loads, whereby their effects, esp. Their suction effects are further increased.

Abstract

In a papermaking process a wet fibre layer on a moving dewatering belt (1) and felt belt (2), the belt lower face is subjected to a partial vacuum. The belt (1, 2) is supported by a structure (4, 5) with a series of separate supporting components located at intervals. The supporting components are separated from the moving sieve belt (1) and felt (2) by low-wear pads. The supporting components are position-adjustable transverse beams forming corrugated outer margins. The supporting structures also move and generate an oscillating action in the moving wet fibre suspension.

Description

Die gegenständliche Erfindung betrifft eine Vorrichtung für eine mindestens ein Siebband bzw. ein Filzband aufweisende Anlage zur Papiererzeugung, welche zum Abstützen des Siebbandes bzw. des Filzbandes und zum Abstreifen des durch das Siebband hindurchtretenden, aus dem auf diesem befindlichen Papierbrei bzw. Papierband austretenden Wassers mit einer Vielzahl von Abstütz- bzw. Abstreifelementen ausgebildet ist, an deren Oberseiten das Siebband bzw. das Filzband zur Anlage kommt, wobei an diese Vorrichtung gegebenenfalls eine Unterdruckquelle angeschlossen ist und weiters eine der Breite des Siebbandes bzw. des Filzbandes entsprechend breite Trageinrichtung für die nebeneinander bzw. hintereinander angeordneten und voneinander im Abstand befindlichen Abstütz- bzw. Abstreifelemente vorgesehen ist, wobei die zwischen den Abstütz- bzw. Abstreifelementen bestehenden Zwischenräume die Durchtrittskanäle für das aus dem Papierbrei bzw. dem Papierband austretende Wasser bzw. für die durch das Siebband bzw. das Filzband hindurchgesaugte Luft bilden.The subject invention relates to a device for at least one screen belt or a felt belt having plant for paper production, which for supporting the screen belt or the felt belt and stripping passing through the screen belt, from the paper pulp or paper belt on this emerging water with a plurality of supporting or stripping elements is formed, on the upper sides of the screen belt or the felt belt comes to rest, to which device optionally a vacuum source is connected and further one of the width of the wire belt or the felt strip correspondingly wide support means for side by side or arranged one behind the other and spaced from each other supporting or stripping is provided, wherein the interstices between the support or stripping the passageways for the emerging from the pulp or the paper tape water or for the form air sucked through the screen belt or the felt belt.

Bekannte Anlagen zur Papiererzeugung weisen einen ersten Anlagenteil, in welchem sich mindestens ein aus Kunststoff hergestelltes Siebband befindet, und einen zweiten Anlagenteil, in welchem sich mindestens ein Filzband befindet, auf, welche beiden Bänder, die in sich geschlossen sind, im Betrieb der Anlage über Führungswalzen bzw. Umlenkwalzen im Umlauf bewegt werden. Auf das Siebband wird ein Papierbrei aufgebracht, aus welchem die in diesem enthaltene Flüssigkeit längs der Bewegungsbahn des Siebbandes abgeführt, insbesondere abgesaugt, wird. In weiterer Folge wird das Papierband auf mindestens ein nachgeschaltetes Filzband übergeben, durch welches die im Papierband enthaltene restliche Feuchtigkeit aufgenommen wird.Known plants for paper production have a first part of the plant, in which there is at least one screen made of plastic, and a second part of the plant, in which there is at least one felt belt, on which two tapes, which are self-contained, during operation of the plant over Guide rollers or guide rollers are moved in circulation. On the screen belt, a pulp is applied, from which the liquid contained in this removed along the movement path of the wire, in particular sucked, is. Subsequently, the paper tape is transferred to at least one downstream felt belt, through which the residual moisture contained in the paper tape is absorbed.

Sowohl das Siebband als auch das Filzband werden durch im Verlauf der Bewegungsbahnen angeordnete Vorrichtungen behandelt. Durch eine erste Gruppe von Vorrichtungen wird die an die Unterseite des Siebbandes gelangende, aus dem Papierband ausgetretene Flüssigkeit abgestreift. Durch weitere Gruppen von Vorrichtungen werden das Siebband bzw. das Filzband durch eine Saugkraft beaufschlagt. Diese Vorrichtungen sind an ihrer dem Siebband bzw. dem Filzband zugewandten Oberseite gegen den durch die Bewegung der Bänder verursachten Abrieb hoch verschleißfest ausgebildet.Both the wire belt and the felt belt are treated by means arranged in the course of the movement paths devices. By a first group of devices, the leaked to the underside of the screen belt, leaked from the paper tape liquid is stripped off. By other groups of devices, the screen belt or the felt belt are acted upon by a suction force. These devices are designed to be highly wear-resistant on their upper side facing the screen belt or the felt belt against the abrasion caused by the movement of the belts.

Bekannte derartige Vorrichtungen sind dabei über die Breite des Siebbandes bzw. des Filzbandes mit Abstützelementen, die mit einem hochverschleißfesten Material, z.B. aus einem keramischen Material versehen sind, ausgebildet, an welche das Siebband bzw. das Filzband zur Anlage kommen.
Soferne diesen Vorrichtungen eine Unterdruckquelle zugeordnet ist, besteht das Erfordernis, die Saugwirkung auf eine möglichst große Fläche des Siebbandes bzw. des Filzbandes zur Wirkung zu bringen. Hierbei soll einerseits das Siebband bzw. das Filzband über eine möglichst große Fläche abgestützt sein und sollen andererseits auch diejenigen Flächen des Siebbandes bzw. des Filzbandes, an welchen die Saugkraft zur Wirkung kommt, möglichst groß sein. Dieser Forderung wird dadurch entsprochen, dass eine Trageinrichtung vorgesehen ist, welche mit einer Vielzahl von nebeneinander bzw. hintereinander angeordneten und voneinander im Abstand befindlichen Abstütz- bzw. Abstreifelementen ausgebildet ist, wobei die zwischen diesen Abstütz- bzw. Abstreifelementen bestehenden Zwischenräume die Durchtrittskanäle für das aus dem Papierbrei bzw. dem Papierband austretende Wasser bzw. für die durch das Siebband bzw. das Filzband hindurch gesaugte Luft bilden.
Eine derartige Vorrichtung ist aus der DE 1761174A bekannt.Known such devices are formed over the width of the wire belt or the felt belt with supporting elements, which are provided with a highly wear-resistant material, for example of a ceramic material, to which the wire belt or the felt belt come to rest.
If these devices a vacuum source is assigned, it is necessary to bring the suction effect on the largest possible area of the wire belt or the felt belt to the effect. Here, on the one hand, the screen belt or the felt belt should be supported over as large a surface as possible and, on the other hand, those surfaces of the screen belt or felt belt, on which the suction force comes into action, should be as large as possible. This requirement is met in that a carrying device is provided, which is formed with a plurality of juxtaposed or successively arranged and spaced from each other support or stripping elements, wherein the interstices between these support or stripping the passageways for the from the pulp or the paper tape emerging water or for the through the wire belt or the felt belt sucked through air.
Such a device is known from DE 1761174A known.

Bei Anlagen zur Papiererzeugung, welche mindestens ein Siebband bzw. ein Filzband aufweisen, besteht weiters auch das Erfordernis, das Siebband bzw. das Filzband durch quer zu deren Bewegungsrichtungen wirkende Zugkräfte zu beanspruchen, durch welche diese Bänder gestreckt werden, wodurch deren Reinigung von Fasern, Flüssigkeit u.dgl. erleichtert wird. Zudem werden durch diese Zugbelastungen in den Papierbändern Turbulenzen erzeugt, durch welche die Papierqualität beeinflußt wird.In papermaking plants, which have at least one screen belt or a felt belt, there is also the requirement to stress the screen belt or the felt belt by tensile forces acting transversely to their directions of movement, by means of which these belts are stretched, whereby their cleaning of fibers, Liquid and the like is relieved. In addition, turbulences are generated by these tensile loads in the paper bands, which affects the paper quality.

Der gegenständlichen Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zu schaffen, durch welche auch diesem Erfordernis entsprochen wird. Dies wird erfindungsgemäß dadurch erzielt, dass die dem Siebband bzw. dem Filzband zugewandte Seite der Trageinrichtung mit einer aus gegenüber der Bewegung des Siebbandes bzw. des Filzbandes verschleißfesten Auflage versehen ist, deren den Stützelementen quer zur Bewegungsrichtung des Siebbandes bzw. des Filzbandes zugewandten Berandungen mit zur Bewegungsrichtung des Siebbandes bzw. des Filzbandes im spitzen Winkel verlaufenden Abschnitten ausgebildet sind, wobei diese insbesondere wellenförmig verlaufen.The present invention has for its object to provide a device by which this requirement is met. This is achieved according to the invention in that the side of the carrying device facing the wire belt or the felt belt is provided with a wear-resistant support with respect to the movement of the wire belt or the felt belt, the edges facing the support elements transversely to the direction of movement of the wire belt or felt belt are formed to the direction of movement of the wire or the felt belt at an acute angle extending portions, which in particular are wavy.

Vorzugsweise sind die Stützelemente an ihrer dem Siebband bzw. dem Filzband zugewandten Seite mit gegenüber der Bewegung des Siebbandes bzw. des Filzbandes verschleißfesten Auflagen ausgebildet. Weiters können Stützelemente gegenüber der Trageinrichtung in Bezug auf ihren Abstand gegenüber dem Siebband bzw. dem Filzband verstellbar sein. Dabei kann ein Teil der Stützelemente an der Trageinrichtung starr befestigt sein und kann ein Teil derselben gegenüber der Trageinrichtung verstellbar sein. Nach einer bevorzugten Ausführungsform sind Stützelemente auf gegenüber dem Siebband bzw. des Filzband verstellbaren Tragleisten angeordnet. Insbesondere sind die Stützelemente nebeneinander auf zur Bewegungsrichtung des Siebbandes bzw. des Filzbandes quer ausgerichteten Tragleisten angeordnet, wobei zumindest ein Teil der Tragleisten gegenüber der Trageinrichtung verstellbar ist.Preferably, the support elements are formed on their side facing the wire belt or the felt belt side with respect to the movement of the wire belt or the felt belt wear-resistant pads. Furthermore, support elements relative to the support means with respect to their distance relative to the wire belt or the felt belt be adjustable. In this case, a part of the support elements may be rigidly secured to the support means and a part thereof may be adjustable relative to the support means. According to a preferred embodiment, supporting elements are arranged on opposite the wire belt or the felt belt adjustable support strips. In particular, the support elements are arranged side by side on the direction of movement of the wire belt or the felt belt transversely oriented support strips, wherein at least a portion of the support strips relative to the support device is adjustable.

Nach einer weiteren bevorzugten Ausführungsform ist die Trageinrichtung quer zur Bewegungsrichtung des Siebbandes bzw. des Filzbandes verstellbar angeordnet, wobei ihr eine Antriebseinrichtung zugeordnet ist, mittels welcher sie quer zur Bewegungsrichtung des Siebbandes bzw. des Filzbandes oszillierbar ist. Dabei kann die Trageinrichtung einen Teil eines Saugkastens bilden, wobei vorzugsweise der Saugkasten mittels der Antriebseinrichtung quer zur Bewegungsrichtung oszillierbar ausgebildet ist.According to a further preferred embodiment, the carrying device is arranged transversely to the direction of movement of the wire belt or the felt belt, wherein it is associated with a drive means by which it is oscillatable transversely to the direction of movement of the wire belt or the felt belt. In this case, the support means may form part of a suction box, wherein preferably the suction box is designed to be oscillatable transversely to the direction of movement by means of the drive means.

Weiters sind vorzugsweise die Stützelemente als Rohrstücke ausgebildet, in welche an deren dem Siebband bzw. dem Filzband zugewandten Ende Elemente aus einem gegenüber der Bewegung des Siebbandes bzw. des Filzbandes verschleißfesten Material eingesetzt sind. Dabei können die Kanten der dem Siebband bzw. dem Filzband zugewandten Oberseiten der Elemente abgefast, insbesondere abgeschrägt oder abgerundet, ausgebildet sein und können diese Elemente an den gegenüberliegenden Seiten mit Fortsätzen ausgebildet sein, mittels welcher sie in die Rohrstücke einsetzbar sind.
Weiters können diese Elemente mit einer gegenüber dem Siebband bzw. dem Filzband ausgewölbten Oberfläche ausgebildet sein.Furthermore, the support elements are preferably designed as pipe pieces, in which at the end of the wire or the felt belt facing elements from a relation to the movement of the wire or the felt belt wear-resistant material are used. In this case, the edges of the wire belt or the felt band facing upper sides of the elements can be chamfered, in particular beveled or rounded, be formed and these elements may be formed on the opposite sides with extensions, by means of which they can be inserted into the pipe sections.
Furthermore, these elements may be formed with a surface which is curved relative to the wire belt or the felt belt.

Der Gegenstand der Erfindung ist nachstehend anhand von in den Zeichnungen dargestellten Ausführungsbeispielen näher erläutert. Es zeigen:

Fig.1
eine Anlage zur Papiererzeugung, welche mit erfindungsgemäßen Vorrichtungen versehen ist, in schematischer Darstellung;
Fig.2, Fig.2a, Fig.2b
drei unterschiedliche Ausführungsformen von erfindungsgemäßen Vorrichtungen, in Seitenansicht bzw. im Schnitt:
Fig.3, Fig.3a
eine vierte Ausführungsform einer erfindungsgemäßen Vorrichtung, in axonometrischer Darstellung und in Seitenansicht;
Fig.4, Fig.4a
eine fünfte Ausführungsform einer erfindungsgemäßen Vorrichtung, in axonometrischer Darstellung und in Seitenansicht;
Fig.5
fünf unterschiedlich ausgebildete Stützelemente, jeweils in axonometrischer Darstellung, und
Fig.6, Fig.6a
erfindungsgemäße Vorrichtungen, welche quer zur Bewegungsrichtung des Siebbandes bzw. des Filzbandes oszillierende Bewegungen ausführen können.
The object of the invention is explained below with reference to exemplary embodiments illustrated in the drawings. Show it:
Fig.1
a plant for paper production, which is provided with devices according to the invention, in a schematic representation;
Fig.2, Fig.2a, Fig.2b
three different embodiments of devices according to the invention, in side view or in section:
Fig.3, Fig.3a
a fourth embodiment of a device according to the invention, in axonometric view and in side view;
Fig.4, Fig.4a
a fifth embodiment of a device according to the invention, in axonometric view and in side view;
Figure 5
five differently shaped support elements, each in axonometric representation, and
Fig.6, Fig.6a
Devices according to the invention, which can perform oscillating movements transversely to the direction of movement of the wire belt or the felt belt.

Die in Fig. 1 dargestellte Anlage zur Herstellung eines Papierbandes 10 besteht aus zwei Anlageteilen, wobei sich in einem ersten Anlageteil ein aus einem Kunststoff gefertigtes Siebband 1 und einem in Bewegungsrichtung des Papierbandes 10 folgenden Anlageteil zwei Paare von Filzbändern 2 befinden. Dem Siebband 1 ist eine Einrichtung 3 zugeordnet, durch welche auf das Siebband 1 über eine Breite von mehreren Metern ein Papierbrei aufgesprüht wird. Das Siebband 1, welches in sich geschlossen ist, ist über mehrere Umlenk- bzw. Führungswalzen 11 in Umlauf bewegbar. Im ersten Bereich der Bewegungsbahn des Siebbandes 1 nach der Einrichtung 3 zum Aufsprühen des Papierbreies sind dem Siebband 1 drei Vorrichtungen 4 zugeordnet, welche nachstehend anhand der Fig. 2 erläutert sind. In weiterer Folge sind dem Siebband 1 mehrere Saugvorrichtungen 5 zugeordnet, welche nachstehend anhand der Fig.2a erläutert sind. Die Saugvorrichtungen 5 sind mit Regeleinrichtungen 51 ausgebildet, durch welche deren Betriebsweise gesteuert wird.In the Fig. 1 shown plant for producing a paper tape 10 consists of two parts of the system, wherein in a first part of a plant made of a plastic screen belt 1 and a following in the direction of movement of the paper tape 10 system part two pairs of felt belts 2 are. The screen belt 1 is associated with a device 3 through which a paper pulp is sprayed onto the screen belt 1 over a width of several meters. The screen belt 1, which is self-contained, is movable in circulation over a plurality of deflection or guide rollers 11. In the first region of the movement path of the screen belt 1 after the device 3 for spraying the Papierbreies the screen belt 1 three devices 4 are assigned, which will be described below with reference to Fig. 2 are explained. In a further consequence, the screen belt 1 is assigned a plurality of suction devices 5, which are described below with reference to FIG 2a are explained. The suction devices 5 are formed with control devices 51, by means of which their mode of operation is controlled.

Die im zweiten Anlageteil befindlichen Paare von Filzbändern 2 sind gleichfalls über Umlenk- und Führungswalzen 21 im Umlauf bewegbar. Den Filzbändern 2 sind Saugvorrichtungen 6 zugeordnet, welche nachstehend anhand der Fig. 2b erläutert sind. Zumindest eine in der jeweiligen Gruppe der Führungs- und Umlenkwalzen ist als Spannwalze 21 a ausgebildet.The present in the second part of the system pairs of felt belts 2 are also movable over deflection and guide rollers 21 in circulation. The felt belts 2 are associated with suction devices 6, which are described below with reference to the Fig. 2b are explained. At least one in the respective group of guide and guide rollers is designed as a tension roller 21 a.

Wie dies aus Fig.2 ersichtlich ist, sind die Vorrichtungen 4 an ihrer dem Siebband 1 zugewandten Seite mit einer im Querschnitt dreieckigen Tragleiste 41 ausgebildet, auf welcher sich ein Tragrahmen 42 für eine Vielzahl von in Bewegungsrichtung A des Siebbandes 1 und quer zu dieser nebeneinander angeordneten Stützelementen 43 und 44 befinden. Der Tragrahmen 42 ist auf der Tragleiste 41 lösbar befestigt. Die Stützelemente 43 sind am Tragrahmen 42 starr befestigt, wogegen die Stützelemente 44 gegenüber dem Tragrahmen 42 in ihrer Höhenlage gegenüber dem Siebband 1 verstellbar sind. Sowohl der Rahmen 42 als auch die Stützelemente 43 und 44 sind an ihrer dem Siebband 1 zugewandten Seite mit Auflagen 42a, 43a und 44a aus einem hoch verschleißfesten Material, insbesondere aus einem keramischen Material, ausgebildet.Like this Fig.2 it can be seen, the devices 4 are formed on its side facing the wire 1 with a triangular cross-section support bar 41, on which there is a support frame 42 for a plurality of in the direction of movement A of the wire 1 and transverse thereto juxtaposed support members 43 and 44 , The support frame 42 is releasably secured to the support bar 41. The support members 43 are rigidly fixed to the support frame 42, whereas the support members 44 relative to the support frame 42 in its height relative to the wire 1 are adjustable. Both the frame 42 and the support members 43 and 44 are formed on their side facing the wire 1 with layers 42a, 43a and 44a of a highly wear-resistant material, in particular of a ceramic material.

Wie dies aus Fig.2a ersichtlich ist, bestehen die Saugvorrichtungen 5 aus einem sich über die Breite des Siebbandes 1 erstreckenden Gehäuse 51, innerhalb dessen sich ein Kanal 50 befindet, an welchen eine Unterdruckquelle angeschlossen ist. An der dem Siebband 1 zugewandten Seite ist gleichfalls ein Tragrahmen 52 angeordnet, innerhalb dessen sich fest angeordnete Stützelemente 53 und verstellbare Stützelemente 54 befinden. Der Tragrahmen 52 ist gleichfalls am Gehäuse 51 lösbar befestigt. Auch der Tragrahmen 52 und die Stützelemente 53 und 54 sind mit Auflagen 52a, 53a und 54a aus einem hoch verschleißfesten Material, insbesondere aus einem keramischen Material, ausgebildet, an welche das Siebband 1 zur Anlage kommt. Die Bewegungsrichtung des Siebbandes 1 ist durch den Pfeil A angedeutet.Like this 2a it can be seen, the suction devices 5 consist of a over the width of the screen belt 1 extending housing 51, within which there is a channel 50 to which a vacuum source is connected. On the side facing the screen belt 1, a support frame 52 is likewise arranged, within which fixedly arranged support elements 53 and adjustable support elements 54 are located. The support frame 52 is also releasably secured to the housing 51. Also, the support frame 52 and the support members 53 and 54 are formed with pads 52a, 53a and 54a of a highly wear-resistant material, in particular of a ceramic material, to which the screen belt 1 comes to rest. The direction of movement of the screen belt 1 is indicated by the arrow A.

Wie dies aus Fig.2b ersichtlich ist, bestehen die Vorrichtungen 6 aus einem sich über die Breite der Filzbänder 2 erstreckenden rohrförmigen Gehäuse 61, innerhalb dessen sich ein Kanal 60 befindet, an welchen gleichfalls eine Unterdruckquelle angeschlossen ist. An der dem Filzband 2 zugewandten Seite dieses Gehäuses 61 befindet sich ein am Gehäuse 61 lösbar befestigter Tragrahmen 62, innerhalb dessen sich fest angeordnete Stützelemente 63 und gegenüber dem Filzband 2 verstellbare Stützelemente 64 befinden. Sowohl der Tragrahmen 62 als auch die Stützelemente 63 und 64 sind mit Auflagen 62a, 63a, 64a aus einem hoch verschleißfesten Material, insbesondere aus einem keramischen Material, ausgebildet. Die Bewegungsrichtung des Filzbandes 2 ist durch den Pfeil B angedeutet.Like this 2b it can be seen, the devices 6 consist of a over the width of the felt belts 2 extending tubular housing 61, within which there is a channel 60, to which also a vacuum source is connected. On the side facing the felt belt 2 side of this housing 61 is a housing 61 releasably secured to the support frame 62, within which fixedly arranged support members 63 and relative to the felt belt 2 adjustable support members 64 are located. Both the support frame 62 and the support members 63 and 64 are formed with pads 62a, 63a, 64a of a highly wear-resistant material, in particular of a ceramic material. The direction of movement of the felt 2 is indicated by the arrow B.

Wie dies aus den Fig.3 und 3a ersichtlich ist, befinden sich bei der Saugvorrichtung 5 innerhalb des Tragrahmens 52 an diesem starr angeordnete Tragleisten 55, an welchen die nicht verstellbaren Stützelemente 53 befestigt sind, sowie in ihrem Abstand gegenüber der Oberseite des Tragrahmens 52 verstellbare Tragleisten 56, an welchen die verstellbaren Stützelemente 54 befestigt sind. Weiters sind die inneren Berandungen 52b der Auflagen 52a quer zur Bewegungsrichtung A des Siebbandes 1 mit im spitzen Winkel verlaufenden Abschnitten versehen, wobei sie insbesondere wellenlinienförmig ausgebildet sind. Zudem ist der Tragrahmen 52 an seinen den Bereichen der Ränder des Siebbandes 1 zugeordneten Seiten mit quer zu diesen verstellbaren Teilen 57 ausgebildet, durch welche die Größe der Saugöffnung einstellbar ist. Auch diese Teile 57 sind mit hochverschleißfesten Auflagen 57a versehen.
Wie dies aus Fig.3a gleichfalls ersichtlich ist, ist weiters die in Bewegungsrichtung A des Siebbandes 1 vordere Kante der Auflage 52a mit einem keilförmigen Fortsatz 52b ausgebildet, durch welchen die Abstreifwirkung der Vorrichtung 5 verbessert wird.Like this from the 3 and 3a it can be seen are at the suction device 5 within the support frame 52 to this rigidly arranged support strips 55 to which the non-adjustable support members 53 are attached, and in their distance from the top of the support frame 52 adjustable support strips 56, to which the adjustable support members 54th are attached. Furthermore, the inner margins 52b of the pads 52a are provided transversely to the direction of movement A of the screen belt 1 with sections running at an acute angle, wherein they are in particular wave-shaped. In addition, the support frame 52 is formed at its the edges of the screen belt 1 associated with sides with transverse to these adjustable parts 57, through which the size of the suction opening is adjustable. These parts 57 are provided with highly wear-resistant pads 57 a.
Like this 3a is also apparent, the front in the direction of movement A of the wire 1 edge of the support 52a is further formed with a wedge-shaped extension 52b, through which the stripping action of the device 5 is improved.

Durch die unterschiedlichen Höhenlagen der Stützelemente 53 und 54 wird das Siebband 1 bei seiner Bewegung über die Stützelemente 53 und 54 wellenförmig bewegt, wodurch es Zugbelastungen unterworfen wird. Durch die wellenlinienförmigen Berandungen 52b wird das Siebband 1 weiters bei seiner Bewegung über den Tragrahmen 52 mit in dessen Ebene quer zur Bewegungsrichtung A wirkenden Zugbelastungen unterworfen. Durch beide diese Zugbelastungen wird bewirkt, daß die im Siebband 1 befindlichen Verunreinigungen und Flüssigkeiten aus diesem leichter entfernbar sind, sodaß das Abfließen von Flüssigkeit aus dem Papierbrei erleichtert wird. Hierdurch wird zudem die Wirkung der auf das Siebband 1 ausgeübten Saugkräfte maßgeblich verbessert. Zudem werden durch diese Zugbelastungen im Papierband Turbulenzen erzeugt, durch welche die Qualität des Papierbandes beeinflußt wird.Due to the different heights of the support members 53 and 54, the wire belt 1 is waved during its movement on the support members 53 and 54, whereby it is subjected to tensile loads. By the wavy edges 52b, the screen belt 1 is further subjected in its movement on the support frame 52 with acting in the plane transverse to the direction of movement A tensile loads. Both of these tensile loads causes the impurities and liquids in the belt 1 to be more easily removed therefrom, so that the drainage of liquid from the pulp is facilitated. As a result, the effect of the suction forces exerted on the wire 1 is also significantly improved. In addition, turbulences are generated by these tensile loads in the paper tape, by which the quality of the paper tape is affected.

Der Tragrahmen 42 der Einrichtung 4 gemäß Fig.2 weist den gleichen Aufbau auf, wenngleich an diese Vorrichtung keine Unterdruckquelle angeschlossen ist.The support frame 42 of the device 4 according to Fig.2 has the same structure, although no vacuum source is connected to this device.

Wie dies aus den Fig.4 und 4b ersichtlich ist, weisen die dem Filzband 2 zugeordneten Saugvorrichtungen 6 einen ähnlichen Aufbau auf. Auch dabei befinden sich innerhalb der Tragrahmen 62 feste Tragleisten 65 mit Stützelementen 63 und gegenüber dem Filzband 2 verstellbare Tragleisten 66 mit verstellbaren Stützelementen 64 und sind die Berandungen 62b der Auflagen 62a quer zur Bewegungsrichtung B der Filzbänder 2 wellenlinienförmig ausgebildet. Durch die hierdurch auf die Filzbänder 2 ausgeübten Zugbelastungen werden diese bei ihrer Bewegung über die Saugeinrichtungen 6 in mehreren Richtungen gestreckt, wodurch in diesen enthaltene Verunreinigungen und Flüssigkeiten leichter entfernt werden und die Wirkung der auf die Filzbänder 2 ausgeübten Saugkraft erhöht wird. Soferne die Berandungen 62b in Bezug auf die Längsachse des Filzbandes 2 sich in ihrem Abstand vergrößernd verlaufen, werden hierdurch auf die Filzbänder 2 quer zu deren Bewegungsrichtung ausgerichtete Zugkräfte ausgeübt, wodurch Faltenbildungen in den Filzbändern 2 verhindert werden. Dieser Effekt gilt auch für die gleich ausgebildeten Berandungen der Vorrichtungen 4 und 5 in Bezug auf das Siebband 1.Like this from the Figure 4 4b, the suction belts 6 associated with the felt belt 2 have a similar construction. Also, there are within the support frame 62 fixed support rails 65 with support members 63 and opposite the felt 2 adjustable support bars 66 with adjustable support members 64 and the edges 62b of the pads 62a formed transversely to the direction B of the felt belts 2 wave-shaped. As a result of the tensile loads exerted thereon on the felt belts 2, they are stretched in several directions as they move over the suction devices 6, whereby impurities and liquids contained in them are more easily removed and the effect of the suction force exerted on the felt belts 2 is increased. As soon as the edges 62b extend in their spacing with respect to the longitudinal axis of the felt belt 2, tensile forces are thereby exerted on the felt belts 2 transversely to their direction of movement, as a result of which wrinkling in the felt belts 2 is prevented. This effect also applies to the identically formed boundaries of the devices 4 and 5 with respect to the screen belt 1.

Wie dies aus Fig.5 ersichtlich ist, können die Stützelemente 43 als Rohrstücke ausgebildet sein, welche mittels einander zugeordneter Schlitze auf die Tragleisten 45 aufgesetzt sind, wobei deren Befestigung auf den Tragleisten 45 mittels eines Schraubelementes 47 erfolgt. In das dem Siebband 1 bzw. dem Filzband 2 zugewandte Ende der Rohrstücke ist eine Kappe 48 eingesetzt. Hierfür sind die Kappen 48 mit zylindrischen Fortsätzen ausgebildet, mittels welcher sie in die Rohrstücke eingesetzt sind. Die Kappen 48 sind aus einem hoch verschleißfesten Material, insbesondere aus einem keramischen Material, hergestellt. Dabei können die Kappen 48 unterschiedliche räumliche Gestaltungen aufweisen. Insbesondere können sie abgefast, insbesondere abgeschrägt, oder abgerundet sein. Zudem können diese Kappen 48 gegenüber dem Siebband 1 gewölbt ausgebildet sein.
Die beweglichen Stützelemente 44 sowie die Stützelemente 53 und 54 ebenso wie die Stützelemente 63 und 64 können in der gleichen Weise ausgebildet und auf festen bzw. verstellbaren Tragleisten befestigt sein.Like this Figure 5 it can be seen, the support members 43 may be formed as pieces of pipe, which are placed on the support strips 45 by means of mutually associated slots, wherein their attachment to the support bars 45 by means of a screw 47 occurs. In the the wire belt 1 and the felt 2 facing the end of the pipe sections a cap 48 is inserted. For this purpose, the caps 48 are formed with cylindrical extensions, by means of which they are inserted into the pipe sections. The caps 48 are made of a highly wear-resistant material, in particular of a ceramic material. The caps 48 may have different spatial configurations. In particular, they can be chamfered, in particular chamfered, or rounded. In addition, these caps 48 may be formed curved relative to the wire 1.
The movable support members 44 and the support members 53 and 54 as well as the support members 63 and 64 may be formed in the same manner and fixed to fixed or adjustable support bars.

Wie dies aus Fig.6 ersichtlich ist, kann das Gehäuse 41 der Einrichtung 4, ebenso wie dies für Vorrichtungen 5 und 6 gilt, auf einem Traggestell 71 quer zu den Bewegungsrichtungen A und B des Siebbandes 1 bzw. der Filzbänder 2 in Richtung des Doppelpfeiles C hin- und herverschiebbar sein, wobei ihm ein Stellmotor 72 zugeordnet ist, durch welchen es über eine Exzenterwelle 73 und eine Schubstange 74 mit oszillierenden Bewegungen beaufschlagbar ist.Like this Figure 6 can be seen, the housing 41 of the device 4, as well as for devices 5 and 6, on a support frame 71st transverse to the directions of movement A and B of the wire 1 and the felt belts 2 back and forth in the direction of the double arrow C, where it is associated with a servomotor 72 through which it can be acted upon by an eccentric shaft 73 and a push rod 74 with oscillating movements ,

Alternativ dazu ist, wie dies in Fig.6a dargestellt ist, der Tragrahmen 42 am Gehäuse 41 in Richtung des Doppelpfeiles C hin- und herverschiebbar gelagert und werden diesem vom Antriebsmotor 72 über die Exzenterwelle 73 und die Schubstange 74 quer zu den Bewegungsrichtungen A des Siebbandes 1 oszilliernde Bewegungen C erteilt. In gleicher Weise können auch die Tragrahmen 52 und 62 quer zu den Bewegungsrichtungen A und B des Siebbandes 1 bzw. der Filzbänder 2 verschiebbar gelagert sein.Alternatively, as stated in 6a is shown, the support frame 42 on the housing 41 in the direction of the double arrow C and herverschiebbar mounted and are granted by the drive motor 72 via the eccentric shaft 73 and the push rod 74 transversely to the directions of movement A of the screen belt 1 oscillating movements C. In the same way, the support frame 52 and 62 can be mounted transversely to the directions of movement A and B of the wire belt 1 and the felt belts 2 slidably.

Durch derartige oszilliernde Bewegungen der Tragrahmen und der Stützelemente werden das Siebband 1 bzw. die Filzbänder 2 verstärkt durch in mehreren Richtungen wirkende Zugbelastungen beansprucht, wodurch deren Wirkungen, insbes. deren Saugwirkungen, weiter vergrößert werden.By such oscillating movements of the support frame and the support elements, the screen belt 1 and the felt belts 2 are claimed reinforced by acting in several directions tensile loads, whereby their effects, esp. Their suction effects are further increased.

Claims (11)

  1. A device for a papermaking installation comprising at least one wire belt or one felt belt, which device is constructed, for supporting the wire belt (1) or the felt belt (2) and for scraping off the water issuing from the paper pulp or paper strip located on the wire belt (1) and passing therethrough, with a plurality of supporting or scraper elements (43, 44; 53, 54; 63, 64), on the upper sides of which the wire belt (1) or the felt belt (2) comes to rest, a source of reduced pressure optionally being connected to this device, and moreover a bearing means (42, 52, 62) corresponding in width to the width of the wire belt (1) or of the felt belt (2) being provided for the supporting or scraper elements (43, 44; 53, 54; 63, 64) arranged next to one another or one behind the other and spaced apart from one another, the spaces arising between these supporting or scraper elements (43, 44; 53, 54; 63, 64) forming the passage channels for the water issuing from the paper pulp or the paper strip or for the air sucked through the wire belt (1) or the felt belt (2), characterised in that the side of the bearing means (42, 52, 62) facing the wire belt (1) or the felt belt (2) is provided with a rest (42a, 52a, 62a) wear resistant relative to the movement of the wire belt (1) or the felt belt (2), the edges (52b, 62b) of which rest (42a, 52a, 62a) which face the supporting elements (43, 44, 53, 54, 63, 64) transversely of the direction of movement (A, B) of the wire belt (1) or of the felt belt (2) comprise portions extending at an acute angle to the direction of movement of the wire belt (1) or the felt belt (2), said portions extending in particular in wavy manner.
  2. A device according to claim 1, characterised in that the supporting elements (43, 44, 53, 54, 63, 64) are provided on their side facing the wire belt (1) or the felt belt (2) with rests (43a, 44a, 53a, 54a, 63a, 64a) wear resistant relative to the movement of the wire belt (1) or the felt belt (2).
  3. A device according to either one of claims 1 and 2, characterised in that supporting elements (44, 54, 64) are adjustable relative to the bearing means (42, 52, 62) with regard to their spacing from the wire belt (1) or the felt belt (2).
  4. A device according to claim 3, characterised in that some of the supporting elements (43, 53, 63) are fixed rigidly to the bearing means (42, 52, 62) and some thereof are adjustable relative to the bearing means (42, 52, 62).
  5. A device according to either one of claims 3 and 4, characterised in that supporting elements (44, 54, 64) are arranged on bearing bars (56, 66) adjustable relative to the wire belt (1) or the felt belt (2).
  6. A device according to any one of claims 3 to 5, characterised in that the supporting elements (43, 44, 53, 54, 63, 64) are arranged next to one another on bearing bars (55, 56, 65, 66) oriented transversely of the direction of movement (A, B) of the wire belt (1) or of the felt belt (2), at least some of the bearing bars (56, 66) preferably being adjustable relative to the bearing means (42, 52, 62).
  7. [DVX1] A device according to any one of claims 1 to 6, characterised in that the bearing means (52, 62) is arranged so as to be adjustable transversely of the direction of movement (A, B) of the wire belt (1) or of the felt belt (2), a drive means (72) being associated with said bearing means, by means of which the latter may oscillate transversely of the direction of movement (A, B) of the wire belt (1) or of the felt belt (2).
  8. A device according to any one of claims 1 to 7, characterised in that the bearing means (52, 62) forms part of a suction box, the suction box preferably being made to be capable of oscillating transversely of the direction of movement (A, B) of the wire belt (1) or of the felt belt (2) by means of a drive means (72).
  9. A device according to any one of claims 1 to 8, characterised in that the supporting elements (43) take the form of tubular pieces, into which there are inserted, at the ends thereof facing the wire belt (1) or the felt belt (2), elements (48) made from a material wear resistant relative to the movement of the wire belt (1) or of the felt belt (2).
  10. A device according to claim 9, characterised in that the edges of the upper sides, facing the wire belt (1) or the felt belt (2), of the elements (48) are of chamfered, in particular bevelled, or rounded construction and in that these elements (48) are provided at the opposite sides with projections (48a), by means of which they may be inserted into the tubular pieces.
  11. A device according to either one of claims 9 and 10, characterised in that the elements (48) are provided with an arched surface opposite the wire belt (1) or the felt belt (2).
EP03450202A 2003-02-20 2003-09-11 Device for the treatment, in particular for low pressure treatment, of the wire or felt of a papermachine Expired - Lifetime EP1449958B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10450007A EP2210977B1 (en) 2003-02-20 2003-09-11 Device for the treatment, in particular for low pressure treatment, of the wire or felt of a papermachine

Applications Claiming Priority (2)

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AT2572003 2003-02-20
AT0025703A AT500751B8 (en) 2003-02-20 2003-02-20 DEVICE FOR TREATING, ESPECIALLY FOR IMPRESSION DISTRIBUTION, OF THE AT LEAST ONE SIEVE BAND OR MOVING IN A PAPER GENERATION APPARATUS. felt belt

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EP1449958A1 EP1449958A1 (en) 2004-08-25
EP1449958B1 true EP1449958B1 (en) 2010-03-17

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EP10450007A Expired - Lifetime EP2210977B1 (en) 2003-02-20 2003-09-11 Device for the treatment, in particular for low pressure treatment, of the wire or felt of a papermachine

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US (1) US7175744B2 (en)
EP (2) EP1449958B1 (en)
JP (1) JP4109179B2 (en)
CN (1) CN1327080C (en)
AT (3) AT500751B8 (en)
CA (1) CA2444684C (en)
DE (1) DE50312520D1 (en)
ES (2) ES2362857T3 (en)

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DE102018119686A1 (en) * 2018-08-14 2020-02-20 Voith Patent Gmbh paper machine

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ATE461317T1 (en) 2010-04-15
CN1523163A (en) 2004-08-25
CN1327080C (en) 2007-07-18
EP1449958A1 (en) 2004-08-25
US20040163787A1 (en) 2004-08-26
ES2339233T3 (en) 2010-05-18
CA2444684C (en) 2007-09-18
AT500751B1 (en) 2006-08-15
AT500751B8 (en) 2007-02-15
DE50312520D1 (en) 2010-04-29
AT500751A1 (en) 2006-03-15
ES2362857T3 (en) 2011-07-14
JP4109179B2 (en) 2008-07-02
CA2444684A1 (en) 2004-08-20
JP2004250854A (en) 2004-09-09
US7175744B2 (en) 2007-02-13
ATE511572T1 (en) 2011-06-15
EP2210977A1 (en) 2010-07-28
EP2210977B1 (en) 2011-06-01

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