EP1881107B1 - Drainage foil for paper manufacturing systems - Google Patents

Drainage foil for paper manufacturing systems Download PDF

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Publication number
EP1881107B1
EP1881107B1 EP06450183A EP06450183A EP1881107B1 EP 1881107 B1 EP1881107 B1 EP 1881107B1 EP 06450183 A EP06450183 A EP 06450183A EP 06450183 A EP06450183 A EP 06450183A EP 1881107 B1 EP1881107 B1 EP 1881107B1
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EP
European Patent Office
Prior art keywords
plates
clips
ceramic material
supporting bar
drainage foil
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EP06450183A
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German (de)
French (fr)
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EP1881107A1 (en
Inventor
Klaus Bartelmuss
Heinz Bartelmuss
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Individual
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Priority to AT06450183T priority Critical patent/ATE421610T1/en
Publication of EP1881107A1 publication Critical patent/EP1881107A1/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
    • D21F1/483—Drainage foils and bars
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49892—Joining plate edge perpendicularly to frame

Definitions

  • the subject invention relates to a sifting for paper-making systems, which consists of a support bar and attached to this, adjoining plates of a ceramic material, wherein the plates of a ceramic material on its side facing the support bar with projecting from these, in the longitudinal direction of the Support strip extending strips are formed, which are formed along their side edges with undercuts
  • the subject invention is therefore based on the object to provide a sifter, by which the above-mentioned disadvantages are avoided.
  • This is achieved according to the invention in that there are several elastically deformable bracket in the support bar, the free ends, which are directed towards each other, protrude into the lateral undercuts of the projecting from the plates strips, whereby the free ends of the bracket are locked to the plates.
  • the plates made of a ceramic material are not formed with recesses, in particular grooves, they are not reduced in their breaking strength. Further, since the free ends of the straps are directed towards each other, only compressive forces are exerted on them by the plates, as a result of which there is no risk of breakage for the plates. Furthermore, since the brackets are elastic, manufacturing tolerances in the plates are irrelevant.
  • a part of the bracket extends beyond the end faces of two adjacent plates made of a ceramic material, whereby the free ends of each bracket protrude into the undercuts of the strips of two juxtaposed plates.
  • the brackets are preferably made of a resilient material, in particular made of sheet steel.
  • the brackets are approximately U-shaped in cross-section with a central web and formed with two lateral legs, wherein the free ends of the lateral legs are directed towards each other.
  • the middle web of the bracket is preferably formed with at least one of the lateral thighs directed outward bend.
  • at least one of the two lateral legs of the bracket may be formed with a transverse to the longitudinal direction of the support bar aligned slot.
  • the support bar is formed on its surfaces facing the plates of a ceramic material having a groove oriented in the longitudinal extent thereof, in which the stirrups are located and in which protrude the projecting from the plates, undercut strips.
  • the sieve strip is produced in that a support bar is produced in a casting process and thereby connected to the plates of a ceramic material and with the brackets latched with these.
  • the in the Fig. 1 and 1a shown sieve strip consists of a support bar 1, from attached to these plates 2 made of a ceramic material and from brackets 3, by means of which the plates 2 are attached to the support bar 1.
  • the support strip 1 which is made of a metal, in particular of stainless steel, or of a plastic material, in particular of glass fiber reinforced plastic, is formed on its side facing the plates 2 with a groove 11 extending in its longitudinal direction.
  • the plates 2 made of a ceramic material are formed on their side facing away from the top, along which the wire of a papermaking plant, with a protruding and extending in the longitudinal direction of the support bar 1 bar 21 which is formed along its lateral edges with undercuts 22 ,
  • the brackets 3, which are preferably made of stainless steel sheet, are approximately U-shaped, wherein they have a central web 31 and two lateral, mutually facing legs 32.
  • the bracket 3 are elastically deformable. The dimensions of the strips 21 and the bracket 3 are chosen so that they can be inserted into the groove 11 located in the support strip 1. Embodiments of this bracket 3 are below with reference to the 4, 4a, 4b and 4c explained.
  • brackets 3 are placed on the plates 2 of a ceramic material such that the free ends of the legs 32 protrude into the undercuts 22 of the strips 21. Furthermore, the brackets 3 are arranged opposite to the plates 2 so that they extend over the butt joints of two adjoining plates 2. As a result, formed with the brackets 3 plates 2 are used with their strips 21 in the groove 11 of the support bar 1 and they are shed in this by means of a plastic material.
  • the plates 2 are formed of a ceramic material only with projecting from these strips 21, on which the resilient strap 3 are placed, only compressive forces are exerted on the plates 2. Further, since the bracket 3 are placed on the strips 21 of two adjacent plates 2 so that they extend over the butt joints, height adjustments between adjacent plates 2 are avoided or can form no protruding edges on the butt joints.
  • the embodiment according to Fig.2 differs from the embodiment according to 1a characterized in that the support bar 10, which consists of a plastic material, in particular of a glass fiber reinforced plastic, is made thereby and connected to the plates 2 of a ceramic material and with the brackets 3, that they in a casting process on the plates 2 with the Ledge 21 and the latched with these brackets 3 is applied.
  • the support bar 10 which consists of a plastic material, in particular of a glass fiber reinforced plastic
  • a first embodiment of a bracket 3 is shown, which is formed with a central web 31 and with two lateral legs 32, wherein the free ends of the two legs 32 are directed towards each other.
  • the middle web 31 is formed with a bent portion 33 of the legs 32 away.
  • at least one of the two legs 32 is formed in its central region with a slot 34. Due to the design of the bracket 3 with at least one bend 33 and with slots 34 whose elasticity is increased.
  • the bracket 3 according to 4a is formed without slots.
  • the bracket 3a according to 4b is opposite the bracket 3 according to Figure 4 formed approximately twice as wide, wherein the central web 31 is formed with two Auskröpfonne 33, which are formed oval in cross-section.
  • the bracket 3a according to 4c differs from the bracket 3 according to 4b in that the offsets 33a are approximately circular in cross-section.

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  • Paper (AREA)
  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Laminated Bodies (AREA)
  • Catalysts (AREA)

Abstract

Wire foil for papermaking machines comprises a profiled support strip (1) and ceramic plates (2) with dovetailed undersides (21) which fit into a corresponding groove (11) in it. Spring clips (3) with a corresponding shape fit between the plates and the strip and hold them in position.

Description

Die gegenständliche Erfindung betrifft eine Siebleiste für Papiererzeugungsanlagen, welche aus einer Tragleiste und aus an dieser befestigten, aneinander anschließenden Platten aus einem keramischen Material besteht, wobei die Platten aus einem keramischen Material an ihrer der Tragleiste zugewandten Seite mit von diesen abragenden, sich in Längsrichtung der Tragleiste erstreckenden Leisten ausgebildet sind, welche längs ihrer Seitenränder mit Hinterschneidungen ausgebildet sindThe subject invention relates to a sifting for paper-making systems, which consists of a support bar and attached to this, adjoining plates of a ceramic material, wherein the plates of a ceramic material on its side facing the support bar with projecting from these, in the longitudinal direction of the Support strip extending strips are formed, which are formed along their side edges with undercuts

Da Siebleisten für Papiererzeugungsanlagen einem sehr starken Verschleiß unterliegen, ist es bekannt, diese als Tragleisten, welche aus Metall oder aus einem Kunststoff hergestellt ist, auszubilden, wobei diese Tragleisten an ihrer dem Siebband einer Papiererzeugungsanlage zugeordneten Fläche mit Platten aus einem keramischen Material beschichtet sind. Da keramische Materialien eine sehr große Härte aufweisen, wird hierdurch dem Erfordernis auf hohe Abriebfestigkeit entsprochen.Since Siebleisten for papermaking plants are subject to very high levels of wear, it is known to form these as support strips, which is made of metal or of a plastic, these support strips are coated on their the Siebband a papermaking plant associated surface with plates of a ceramic material. Since ceramic materials have a very high hardness, this meets the requirement for high abrasion resistance.

Aufgrund der großen Härten von keramischen Materialien besteht jedoch die Schwierigkeit, dass diese Platten nur in sehr begrenzten Dimensionen hergestellt werden können, weswegen für die Beschichtung der Tragleisten eine große Anzahl von derartigen Platten benötigt wird, welche dicht aneinanderliegend an den Tragleisten befestigt werden. Bei dieser Befestigung muss gewährleistet werden, dass die Platten in gleicher Höhe aneinanderliegen, um hierdurch andernfalls an deren Stoßfugen auftretende, vorspringende Kanten, durch welche das sich über die Platten bewegende Siebband beschädigt wird, zu vermeiden.Due to the great hardness of ceramic materials, however, there is the difficulty that these plates can be made only in very limited dimensions, which is why a large number of such plates is required for the coating of the support bars, which are fastened tightly against each other on the support bars. In this attachment, it must be ensured that the plates lie against each other at the same height, in order otherwise to avoid occurring at their butt joints, projecting edges through which the moving over the plates sieve belt is damaged to avoid.

Die Formgebung derartiger Platten erfolgt dadurch, dass diese in einem Pressvorgang und in einem nachfolgendem Sintervorgang hergestellt werden. Hierbei können sie an der an die Tragleisten anliegenden Seite mit Ausnehmungen und Vorsprüngen, wie Leisten, ausgebildet werden, welche für deren Befestigung auf den Tragleisten verwendet werden. Weiters muss bei der Befestigung der Platten aus einem keramischen Material auf Tragleisten berücksichtigt werden, dass die Platten eine nur geringe Zugfestigkeit bzw. Biegefestigkeit und dadurch eine hohe Bruchanfälligkeit aufweisen.The shaping of such plates takes place in that they are produced in a pressing process and in a subsequent sintering process. In this case, they can be formed on the voltage applied to the support side with recesses and projections, such as strips, which are used for their attachment to the support bars. Furthermore, it must be taken into account when mounting the plates made of a ceramic material on support strips that the plates have only a low tensile strength or flexural strength and thus a high susceptibility to breakage.

Aus der EP-A 1 1577437 und aus der AT-B 1 372993 ist es zur Befestigung von Platten aus einem keramischen Material auf Tragleisten bekannt, die Platten mit von diesen abragenden Leisten auszubilden, welche in diesen zugeordnete, in den Tragleisten vorgesehenen Nuten einragen, wobei die von den Platten abragenden Leisten in den Nuten der Tragleisten verklemmt, verriegelt oder in anderer Weise befestigt werden.From the EP-A 1 1577437 and from the AT-B 1 372993 it is known for mounting plates made of a ceramic material on support strips to form the plates with projecting from these strips, which protrude into these associated, provided in the support rails grooves, wherein the projecting from the plates strips in the grooves of the support bars clamped locked or otherwise fastened.

Durch diese bekannte Befestigung wird jedoch aufgrund der Fertigungstoleranzen der von den Platten abragenden Leisten die angestrebte ebene Oberfläche der aneinander liegenden Platten nicht gewährleistet.By this known attachment, however, due to the manufacturing tolerances of the projecting from the plates bars the desired flat surface of the adjacent plates is not guaranteed.

Weiters ist es bekannt, sowohl die Platten aus einem keramischen Material als auch die Tragleisten an den aneinander liegenden Flächen mit einander zugeordneten Ausnehmungen, insbesondere Nuten, auszubilden und Verbindungselemente vorzusehen, welche in die Ausnehmungen der Platten und der Tragleisten eingesetzt und in diesen z.B. mittels eines Kunststoffmaterials befestigt sind. Da sich dabei diese Verbindungselemente über die zwischen den einzelnen Platten befindlichen Stoßfugen hinweg erstrecken, sind die nebeneinander befindlichen Platten auf gleicher Höhe gehalten, wodurch die Ausbildung von vorstehenden Kanten vermieden wird. Da jedoch bei dieser Art der Befestigung der Platten an den Tragleisten die Platten durch die in diese einragenden Verbindungselemente auf Zug bzw. auf Biegung belastet werden, wird hierdurch die Bruchgefahr der Platten maßgeblich vergrößert. Es ist dabei zu berücksichtigen, dass durch die in den Platten vorgesehenen Nuten diese in ihrer Dicke vermindert sind, wodurch deren Bruchfestigkeit herabgesetzt ist und zudem durch die Nuten Kerbeffekte verursacht werden.Furthermore, it is known to form both the plates of a ceramic material and the support strips on the abutting surfaces with associated recesses, in particular grooves, and to provide connecting elements which are inserted into the recesses of the plates and the support strips and in this. are attached by means of a plastic material. Since in the process these connecting elements extend beyond the joints between the individual plates, the adjacent plates are kept at the same height, whereby the formation of projecting edges is avoided. However, since in this type of attachment of the plates to the support strips, the plates are loaded by the projecting into these connecting elements to train or bending, thereby the risk of breakage of the plates is significantly increased. It should be noted that these are reduced in thickness by the grooves provided in the plates, whereby their breaking strength is reduced and, moreover, notch effects are caused by the grooves.

Aus der AT-B1 328852 ist es weiters bekannt, die Platten mit voneinander im Abstand befindlichen Ausnehmungen auszubilden, in welche die freien Enden von in den Tragleisten verankerten Befestigungsbügeln einragen und in diesen gleichfalls mittels eines Kunststoffmaterials fixiert sind. Diese Art der Befestigung ist jedoch deshalb nicht den Erfordernissen entsprechend, da durch die Bügel die Stoßfugen zweier aneinander liegender Platten nicht überbrückt werden, wodurch sich gleichfalls vorspringende Kanten ausbilden können und da zudem auch dadurch auf die Platten Zugbelastungen ausgeübt werden, wodurch diese bruchgefährdet sind. Diese Bruchgefahr wird noch dadurch vergrößert, dass durch die in den Platten befindlichen Ausnehmungen die Bruchfestigkeit der Platten vermindert wird.From the AT-B1 328852 It is also known to form the plates with mutually spaced recesses into which protrude the free ends of anchored in the support brackets mounting brackets and are also fixed in these by means of a plastic material. However, this type of attachment is therefore not in accordance with the requirements, since the butt joints of two adjacent plates are not bridged, which can also form projecting edges and also because thereby tensile stresses are exerted on the plates, whereby they are vulnerable to breakage. This risk of breakage is further increased by the fact that the recesses in the plates, the breaking strength of the plates is reduced.

Der gegenständlichen Erfindung liegt somit die Aufgabe zugrunde, eine Siebleiste zu schaffen, durch welche die vorstehend erläuterten Nachteile vermieden werden. Dies wird erfindungsgemäß dadurch erzielt, dass sich in der Tragleiste mehrere elastisch verformbare Bügel befinden, deren freie Enden, welche zueinander gerichtet sind, in die seitlichen Hinterschneidungen der von den Platten abragenden Leisten einragen, wodurch die freien Enden der Bügel mit den Platten verrastet sind.The subject invention is therefore based on the object to provide a sifter, by which the above-mentioned disadvantages are avoided. This is achieved according to the invention in that there are several elastically deformable bracket in the support bar, the free ends, which are directed towards each other, protrude into the lateral undercuts of the projecting from the plates strips, whereby the free ends of the bracket are locked to the plates.

Da hierbei die Platten aus einem keramischen Material nicht mit Ausnehmungen, insbesondere Nuten, ausgebildet sind, sind sie in ihrer Bruchfestigkeit nicht vermindert. Da weiters die freien Enden der Bügel zueinander gerichtet sind, werden von diesen auf die Platten nur Druckkräfte ausgeübt, wodurch für die Platten keine Bruchgefährdung besteht. Da weiters die Bügel elastisch sind, sind Fertigungstoleranzen bei den Platten unmaßgeblich.In this case, since the plates made of a ceramic material are not formed with recesses, in particular grooves, they are not reduced in their breaking strength. Further, since the free ends of the straps are directed towards each other, only compressive forces are exerted on them by the plates, as a result of which there is no risk of breakage for the plates. Furthermore, since the brackets are elastic, manufacturing tolerances in the plates are irrelevant.

Vorzugsweise erstreckt sich ein Teil der Bügel über die Stirnflächen zweier aneinander liegenden Platten aus einem keramischen Material hinaus, wodurch die freien Enden jeweils eines Bügels in die Hinterschneidungen der Leisten zweier nebeneinander befindlicher Platten einragen.
Die Bügel sind vorzugsweise aus einem federelastischen Material, insbesondere aus Stahlblech, hergestellt. Dabei sind die Bügel im Querschnitt angenähert U-förmig mit einem mittleren Steg und mit zwei seitlichen Schenkeln ausgebildet, wobei die freien Enden der seitlichen Schenkel zueinander gerichtet sind. Weiters ist vorzugsweise der mittlere Steg der Bügel mit mindestens einer von den seitlichen- Schenkeln weg gerichteten Auskröpfung ausgebildet. Zudem kann mindestens einer der beiden seitlichen Schenkel der Bügel mit einem quer zur Längsrichtung der Tragleiste ausgerichteten Schlitz ausgebildet sein.Preferably, a part of the bracket extends beyond the end faces of two adjacent plates made of a ceramic material, whereby the free ends of each bracket protrude into the undercuts of the strips of two juxtaposed plates.
The brackets are preferably made of a resilient material, in particular made of sheet steel. The brackets are approximately U-shaped in cross-section with a central web and formed with two lateral legs, wherein the free ends of the lateral legs are directed towards each other. Furthermore, the middle web of the bracket is preferably formed with at least one of the lateral thighs directed outward bend. In addition, at least one of the two lateral legs of the bracket may be formed with a transverse to the longitudinal direction of the support bar aligned slot.

Nach einer bevorzugten Ausführungsform ist die Tragleiste an ihrer den Platten aus einem keramischen Material zugewandten Fläche mit einer sich in deren Längserstreckung ausgerichteten Nut ausgebildet, in welcher sich die Bügel befinden und in welche die von den Platten abragenden, hinterschnittenen Leisten einragen. Nach einer alternativen Ausführungsform ist die Siebleiste dadurch hergestellt, dass eine Tragleiste in einem Gießvorgang hergestellt und dabei mit den Platten aus einem keramischen Material und mit den mit diesen verrasteten Bügeln verbunden wird.According to a preferred embodiment, the support bar is formed on its surfaces facing the plates of a ceramic material having a groove oriented in the longitudinal extent thereof, in which the stirrups are located and in which protrude the projecting from the plates, undercut strips. According to an alternative embodiment, the sieve strip is produced in that a support bar is produced in a casting process and thereby connected to the plates of a ceramic material and with the brackets latched with these.

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

Fig.1
eine erste Ausführungsform einer erfindungsgemäßen Siebleiste, in auseinandergezogener, axonometrischer Darstellung;
Fig. 1a
die Siebleiste gemäß Fig.1, in axonometrischer Darstellung;
Fig.2
eine zweite Ausführungsform einer erfindungsgemäßen Siebleiste, in axonometrischer Darstellung;
die Fig.3, 3a, 3b
drei Ausführungsformen von erfindungsgemäßen Siebleisten, jeweils in Stirnansicht; und
die Fig.4, 4a, 4b, 4c
vier erfindungsgemäße Bügel, jeweils in axonometrischer Darstellung.
The object of the invention is explained below with reference to exemplary embodiments illustrated in the drawing. Show it:
Fig.1
a first embodiment of a sieve according to the invention, in exploded, axonometric representation;
Fig. 1a
the sieve strip according to Fig.1 in axonometric representation;
Fig.2
a second embodiment of a sieve according to the invention, in axonometric representation;
FIGS. 3, 3a, 3b
three embodiments of inventive sheeting lists, each in front view; and
4, 4a, 4b, 4c
four inventive bracket, each in axonometric representation.

Die in den Fig. 1 und 1a dargestellte Siebleiste besteht aus einer Tragleiste 1, aus an dieser befestigten Platten 2 aus einem keramischen Material und aus Bügeln 3, mittels welcher die Platten 2 an der Tragleiste 1 befestigt sind.The in the Fig. 1 and 1a shown sieve strip consists of a support bar 1, from attached to these plates 2 made of a ceramic material and from brackets 3, by means of which the plates 2 are attached to the support bar 1.

Die Tragleiste 1, welche aus einem Metall, insbesondere aus rostfreiem Stahl, oder aus einem Kunststoffmaterial, insbesondere aus glasfaserverstärktem Kunststoff, hergestellt ist, ist an ihrer den Platten 2 zugewandten Seite mit einer sich in deren Längsrichtung erstreckenden Nut 11 ausgebildet. Die Platten 2 aus einem keramischen Material sind an ihrer von der Oberseite, längs welcher das Siebband einer Papiererzeugungsanlage bewegt wird, abgewandten Seite mit einer abragenden und sich in Längsrichtung der Tragleiste 1 erstreckenden Leiste 21 ausgebildet, welche längs ihrer seitlichen Ränder mit Hinterschneidungen 22 ausgebildet ist. Die Bügel 3, welche vorzugsweise aus rostfreiem Stahlblech hergestellt sind, sind angenähert U-förmig ausgebildet, wobei sie einen mittleren Steg 31 und zwei seitliche, zueinander gerichtete Schenkel 32 aufweisen. Die Bügel 3 sind elastisch verformbar. Die Dimensionen der Leisten 21 und der Bügel 3 sind so gewählt, dass sie in die in der Tragleiste 1 befindlichen Nut 11 eingesetzt werden können.
Ausführungsformen dieser Bügel 3 sind nachstehend anhand der Fig.4, 4a, 4b und 4c erläutert.The support strip 1, which is made of a metal, in particular of stainless steel, or of a plastic material, in particular of glass fiber reinforced plastic, is formed on its side facing the plates 2 with a groove 11 extending in its longitudinal direction. The plates 2 made of a ceramic material are formed on their side facing away from the top, along which the wire of a papermaking plant, with a protruding and extending in the longitudinal direction of the support bar 1 bar 21 which is formed along its lateral edges with undercuts 22 , The brackets 3, which are preferably made of stainless steel sheet, are approximately U-shaped, wherein they have a central web 31 and two lateral, mutually facing legs 32. The bracket 3 are elastically deformable. The dimensions of the strips 21 and the bracket 3 are chosen so that they can be inserted into the groove 11 located in the support strip 1.
Embodiments of this bracket 3 are below with reference to the 4, 4a, 4b and 4c explained.

Zur Herstellung einer Siebleiste werden die Bügel 3 so auf die Platten 2 aus einem keramischen Material aufgesetzt, dass die freien Enden der Schenkel 32 in die Hinterschneidungen 22 der Leisten 21 einragen. Weiters werden die Bügel 3 gegenüber den Platten 2 so angeordnet, dass sie sich über die Stoßfugen zweier aneinander anschließender Platten 2 erstrecken. In der Folge werden die mit den Bügeln 3 ausgebildeten Platten 2 mit ihren Leisten 21 in die Nut 11 der Tragleiste 1 eingesetzt und werden sie in dieser mittels eines Kunststoffmaterials vergossen.To produce a sieve strip, the brackets 3 are placed on the plates 2 of a ceramic material such that the free ends of the legs 32 protrude into the undercuts 22 of the strips 21. Furthermore, the brackets 3 are arranged opposite to the plates 2 so that they extend over the butt joints of two adjoining plates 2. As a result, formed with the brackets 3 plates 2 are used with their strips 21 in the groove 11 of the support bar 1 and they are shed in this by means of a plastic material.

Da die Platten 2 aus einem keramischen Material nur mit von diesen abragenden Leisten 21 ausgebildet sind, auf welche die federelastischen Bügel 3 aufgesetzt sind, werden auf die Platten 2 nur Druckkräfte ausgeübt. Da weiters die Bügel 3 auf die Leisten 21 zweier nebeneinander liegender Platten 2 so aufgesetzt sind, dass sie sich über die Stoßfugen erstrecken, werden Höhenverstellungen zwischen nebeneinander befindlichen Platten 2 vermieden bzw. können sich an den Stoßfugen keine vorstehenden Kanten ausbilden.Since the plates 2 are formed of a ceramic material only with projecting from these strips 21, on which the resilient strap 3 are placed, only compressive forces are exerted on the plates 2. Further, since the bracket 3 are placed on the strips 21 of two adjacent plates 2 so that they extend over the butt joints, height adjustments between adjacent plates 2 are avoided or can form no protruding edges on the butt joints.

Die Ausführungsform gemäß Fig.2 unterscheidet sich von der Ausführungsform gemäß Fig.1a dadurch, dass die Tragleiste 10, welche aus einem Kunststoffmaterial, insbesondere aus einem glasfaserverstärkten Kunststoff, besteht, dadurch hergestellt und mit den Platten 2 aus einem keramischen Material und mit den Bügeln 3 verbunden ist, dass sie in einem Gießvorgang auf die Platten 2 mit den Leisten 21 und den mit diesen verrasteten Bügeln 3 aufgebracht wird.The embodiment according to Fig.2 differs from the embodiment according to 1a characterized in that the support bar 10, which consists of a plastic material, in particular of a glass fiber reinforced plastic, is made thereby and connected to the plates 2 of a ceramic material and with the brackets 3, that they in a casting process on the plates 2 with the Ledge 21 and the latched with these brackets 3 is applied.

In den Fig.3, 3a, 3b und 3c sind mehrere Ausführungsformen einer erfindungsgemäßen Siebleiste dargestellt:

  • Die Ausführungsform der Fig.3 ist diejenige, welche anhand der Fig.1 erläutert ist.
  • Die Ausführungsform gemäß Fig.3a unterscheidet sich von der Ausführungsform gemäß Fig. 3 dadurch, dass die Tragleiste 1a, welche wesentlich breiter ist, mit zwei Nuten 11 ausgebildet ist und dass auch die Platten 2a aus einem keramischen Material, welche breiter sind, mit zwei Leisten 21 ausgebildet ist, auf welche die Bügel 3 aufgesetzt sind, wobei die Leisten 21 und die Bügel 3 in den Nuten 11 mittels eines Kunststoffmaterials vergossen sind.
  • Die Ausführungsform gemäß Fig.3b unterscheidet sich von der Ausführungsform gemäß Fig.3 dadurch, dass die Tragleiste 1a mit einer wesentlich breiteren Nut 11a ausgebildet ist, und dass die Platten 2a aus einem keramischen Material mit wesentlich breiteren Leisten 21 a ausgebildet sind, welchen entsprechend breitere Bügel 3a zugeordnet sind. Die Tragleisten 1 und 1a sind mit sich längs erstreckenden Profilierungen, wie mit einer Nut, ausgebildet, mittels welcher sie an einem ortsfesten Träger der Anlage lösbar befestigt werden können.
In the 3, 3a, 3b and FIG. 3c shows several embodiments of a sieve strip according to the invention:
  • The embodiment of the Figure 3 is the one who uses the Fig.1 is explained.
  • The embodiment according to 3a differs from the embodiment according to Fig. 3 in that the support strip 1a, which is substantially wider, is formed with two grooves 11 and that also the plates 2a made of a ceramic material, which are wider, with two strips 21 is formed on which the bracket 3 are placed, wherein the Strip 21 and the bracket 3 are shed in the grooves 11 by means of a plastic material.
  • The embodiment according to 3b differs from the embodiment according to Figure 3 in that the support strip 1a is formed with a substantially wider groove 11a, and that the plates 2a made of a ceramic material substantially wider strips 21 a are formed, which are assigned correspondingly wider strap 3a. The support strips 1 and 1a are formed with longitudinally extending profiles, such as with a groove, by means of which they can be releasably secured to a stationary support of the system.

In Fig.4 ist eine erste Ausführungsform eines Bügels 3 dargestellt, welcher mit einem mittleren Steg 31 und mit zwei seitlichen Schenkeln 32 ausgebildet ist, wobei die freien Enden der beiden Schenkel 32 zueinander gerichtet sind. Zudem ist der mittlere Steg 31 mit einer von den Schenkeln 32 weg gerichteten Auskröpfung 33 ausgebildet. Zudem ist zumindest einer der beiden Schenkel 32 in seinem mittleren Bereich mit einem Schlitz 34 ausgebildet. Durch die Ausbildung der Bügel 3 mit mindestens einer Auskröpfung 33 und mit Schlitzen 34 wird deren Elastizität vergrößert. Der Bügel 3 gemäß Fig.4a ist ohne Schlitze ausgebildet.
Der Bügel 3a gemäß Fig.4b ist gegenüber dem Bügel 3 gemäß Fig.4 etwa doppelt so breit ausgebildet, wobei dessen mittleren Steg 31 mit zwei Auskröpfungen 33 ausgebildet ist, welche im Querschnitt oval ausgebildet sind.
Der Bügel 3a gemäß Fig.4c unterscheidet sich vom Bügel 3 gemäß Fig.4b dadurch, dass die Auskröpfungen 33a im Querschnitt angenähert kreisförmig ausgebildet sind.In Figure 4 a first embodiment of a bracket 3 is shown, which is formed with a central web 31 and with two lateral legs 32, wherein the free ends of the two legs 32 are directed towards each other. In addition, the middle web 31 is formed with a bent portion 33 of the legs 32 away. In addition, at least one of the two legs 32 is formed in its central region with a slot 34. Due to the design of the bracket 3 with at least one bend 33 and with slots 34 whose elasticity is increased. The bracket 3 according to 4a is formed without slots.
The bracket 3a according to 4b is opposite the bracket 3 according to Figure 4 formed approximately twice as wide, wherein the central web 31 is formed with two Auskröpfungen 33, which are formed oval in cross-section.
The bracket 3a according to 4c differs from the bracket 3 according to 4b in that the offsets 33a are approximately circular in cross-section.

Claims (8)

  1. A drainage foil for papermaking installations, which consists of a supporting bar (1, 1a) and of mutually adjacent plates(2, 2a) of a ceramic material fastened to the latter, the plates (2, 2a) of a ceramic material being provided on their side facing the supporting bar (1, 1a) with bars (21, 21a) protruding therefrom and extending in the longitudinal direction of the supporting bar (1, 1a), which bars (21, 21a) are provided along their side edges with undercuts (22), characterised in that a plurality of elastically deformable clips (3, 3a) are disposed in the supporting bar (1, 1a), the free ends (32) of which clips (3, 3a), which are directed towards one another, project into the lateral undercuts (22) of the bars (21, 21a) projecting away from the plates (2, 2a), whereby the free ends (32) of the clips (3, 3a) are latched together with the plates (2, 2a).
  2. A drainage foil according to claim 1, characterised in that at least some of the clips (3, 3a) extend beyond the end faces of two adjoining plates (2, 2a) of a ceramic material, whereby the free ends (32) of in each case one clip (3, 3a) project into the undercuts (22) of the bars (21, 21a) of two plates (2, 2a) disposed next to one another.
  3. A drainage foil according to either one of claims 1 and 2, characterised in that the clips (3, 3a) consist of a resilient material, in particular of sheet steel.
  4. A drainage foil according to any one of claims 1 to 3, characterised in that the clips (3, 3a) are of cross-sectionally approximately u-shaped construction with a central web (31) and two lateral arms (32), the free ends of the lateral arms (32) being directed towards one another.
  5. A drainage foil according to claim 4, characterised in that the central web (31) of the clips (3, 3a) is provided with at least one crimped projection (33) directed away from the lateral arms (32).
  6. A drainage foil according to either one of claims 4 and 5, characterised in that at least one of the two lateral arms (32) of the clips (3, 3a) is provided with a slit (34) oriented transversely of the longitudinal direction of the supporting bar (1, 1a).
  7. A drainage foil according to any one of claims 1 to 6, characterised in that the supporting bar (1, 1a) is provided on its face facing the plates (2, 2a) of a ceramic material with a groove (11, 11a) oriented along the longitudinal extension thereof, in which groove (11, 11a) the clips (3, 3a) are located and into which project the undercut bars (21, 21a) of the plates (2, 2a) protruding from the plates (2, 2a).
  8. A drainage foil according to any one of claims 1 to 7, characterised in that it is produced in that a supporting bar (10) is produced by casting and in the process is bonded to the plates (2) of a ceramic material and to the clips (3) latched together therewith.
EP06450183A 2006-07-20 2006-12-14 Drainage foil for paper manufacturing systems Active EP1881107B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT06450183T ATE421610T1 (en) 2006-07-20 2006-12-14 SCREEN LEAD FOR PAPER MAKING SYSTEMS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0123406A AT503435B1 (en) 2006-07-20 2006-07-20 Wire foil for papermaking machines comprises support strip and ceramic plates with dovetailed undersides which fit into corresponding groove in it, spring clips fitting between plates and strip to hold them in position

Publications (2)

Publication Number Publication Date
EP1881107A1 EP1881107A1 (en) 2008-01-23
EP1881107B1 true EP1881107B1 (en) 2009-01-21

Family

ID=38226398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06450183A Active EP1881107B1 (en) 2006-07-20 2006-12-14 Drainage foil for paper manufacturing systems

Country Status (9)

Country Link
US (1) US7799174B2 (en)
EP (1) EP1881107B1 (en)
JP (1) JP4859750B2 (en)
CN (1) CN101109161B (en)
AT (2) AT503435B1 (en)
BR (1) BRPI0702602B1 (en)
CA (1) CA2585579C (en)
DE (1) DE502006002719D1 (en)
ES (1) ES2319924T3 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2150651B1 (en) * 2007-05-23 2015-03-18 AstenJohnson, Inc. Papermaking machine dewatering blade incorporating attachment mechanism
FI121796B (en) * 2009-12-09 2011-04-15 Metso Paper Inc Static element for a fiber web machine
US20110309317A1 (en) * 2010-06-22 2011-12-22 John Paulin Deck railing with low-voltage wiring concealment
DK2720862T3 (en) 2011-06-17 2016-09-19 Fiberweb Inc Vapor permeable, water impervious TOTAL MAJOR MULTI-LAYER ARTICLE
PL2723568T3 (en) 2011-06-23 2018-01-31 Fiberweb Llc Vapor permeable, substantially water impermeable multilayer article
EP2723567A4 (en) 2011-06-24 2014-12-24 Fiberweb Inc Vapor-permeable, substantially water-impermeable multilayer article
GB2524279A (en) * 2014-03-19 2015-09-23 William Ernest Edward Bowyer Thermally efficient flat radiator MKII
CN104099796A (en) * 2014-06-17 2014-10-15 常熟鼎天赫机械有限公司 Ceramic dehydration element for paper making machine
JP7519919B2 (en) 2018-10-18 2024-07-22 キャリア コーポレイション Microchannel Heat Exchanger Tube Support Bracket

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US3535204A (en) * 1967-01-23 1970-10-20 Dominion Eng Works Ltd Foil mounting arrangement in a paper machine
DE1958758B1 (en) * 1969-11-22 1971-06-16 Voith Gmbh J M Fixed support device for the screen belt of a dewatering machine, in particular a dewatering strip for the wire section of a paper machine
US3928125A (en) * 1972-12-18 1975-12-23 Feldmuehle Anlagen Prod Water extraction apparatus for papermaking machine
JPS587034B2 (en) * 1975-10-06 1983-02-08 株式会社デンソー Kaitenden Kinoseiriyuushinoseizouhouhou
AT372993B (en) * 1977-02-23 1983-12-12 Bartelmuss Heinz Mag HOLDING DEVICE FOR THE SUPPORT BODY FOR A LUG CARRIER (SCREEN) OF DRAINAGE MACHINES
US4184915A (en) * 1978-12-08 1980-01-22 Wilbanks International, Inc. Drainage foil apparatus with individually replaceable ceramic segments
US4559105A (en) * 1984-07-05 1985-12-17 Beloit Corporation Positive lock foil blades
CN85104451A (en) * 1985-06-11 1986-12-10 美商贝洛特公司 Positive lock foil blades
US5630910A (en) * 1995-06-26 1997-05-20 Jwi Ltd. Clip fastener for a dewatering box
JP3455127B2 (en) * 1999-03-05 2003-10-14 京セラ株式会社 Net paper support member
JP2001271285A (en) * 2000-03-22 2001-10-02 S D R Kk Foil blade for papermaking apparatus
AT411770B (en) * 2002-09-12 2004-05-25 Bartelmuss Klaus Ing SCREEN BAR FOR A PAPER PRODUCTION PLANT
AT500283B8 (en) * 2004-03-17 2007-02-15 Bartelmuss Klaus Ing SCREENING FOR PAPER PRODUCTION PLANTS

Also Published As

Publication number Publication date
BRPI0702602A (en) 2008-03-04
BRPI0702602B1 (en) 2017-05-30
JP4859750B2 (en) 2012-01-25
CN101109161B (en) 2011-10-26
US7799174B2 (en) 2010-09-21
JP2008025086A (en) 2008-02-07
CN101109161A (en) 2008-01-23
CA2585579A1 (en) 2008-01-20
CA2585579C (en) 2012-12-04
US20080017343A1 (en) 2008-01-24
AT503435A4 (en) 2007-10-15
ES2319924T3 (en) 2009-05-14
AT503435B1 (en) 2007-10-15
DE502006002719D1 (en) 2009-03-12
EP1881107A1 (en) 2008-01-23
ATE421610T1 (en) 2009-02-15

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