EP0837178A1 - Process for making screens and screen obtained by this method - Google Patents

Process for making screens and screen obtained by this method Download PDF

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Publication number
EP0837178A1
EP0837178A1 EP97114817A EP97114817A EP0837178A1 EP 0837178 A1 EP0837178 A1 EP 0837178A1 EP 97114817 A EP97114817 A EP 97114817A EP 97114817 A EP97114817 A EP 97114817A EP 0837178 A1 EP0837178 A1 EP 0837178A1
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EP
European Patent Office
Prior art keywords
sieve
strips
profile bars
profile
sieve strips
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EP97114817A
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German (de)
French (fr)
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EP0837178B1 (en
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Werner Lange
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Voith Patent GmbH
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Individual
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • D21D5/16—Cylinders and plates for screens
    • 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
    • Y10T29/496—Multiperforated metal article making
    • Y10T29/49604—Filter
    • 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
    • Y10T29/49908—Joining by deforming

Definitions

  • the invention relates to a method according to the preamble of claim 1.
  • a sieve produced in this way can e.g. be a strainer basket in pressure sorters the pulp and paper industry is used to the fibrous suspension to be treated in a kind of re-screening.
  • non-fibers are said to be Contamination due to their size retained on a screen element and then be deposited.
  • the fibers can together with some of the water Pass sorting openings.
  • There are other uses of such devices e.g. around to fractionate fiber-containing suspensions according to the fiber length or to e.g. to let unwanted fines through the sieve element and the fibers hold back. Basically, such machines are widely known and are often used.
  • the screen element inserts are called screen baskets if they rotationally symmetrical, e.g. are cylindrical. To clog the Preventing sorting openings will usually move close to them Used reamer.
  • Sieves which are produced by the method according to the invention can also be used outside of the pulp and paper industry.
  • sorting openings for the seven.
  • Man distinguishes between essentially round openings and elongated ones, the elongated openings in the extreme case are gaps that extend over the entire axial extent the sieve baskets run.
  • the manufacturing processes are at the sorting openings adapted, which is why they are often essential for perforated screen baskets and slotted screen baskets differentiate.
  • Modern manufacturing processes have already been found for slotted screens in which the sorting openings, i.e. the gaps, are arranged in parallel Rods are formed. However, this procedure is still due to the large number of Bars very expensive.
  • the sorting openings are generally known through Methods such as Drilling or electrical erosion, placed in a sheet metal plate.
  • Drilling or electrical erosion placed in a sheet metal plate.
  • Stamped sheets are used in special cases. Even if the production processes rationalized by automatically working machines, especially the boring mills they are still quite expensive.
  • the invention has for its object to provide a method for producing screens create, with which the costs can be reduced without the quality deteriorating becomes.
  • the effort involved in the production of screens of different sizes should also be be small.
  • Such sieve strips are easier to drill than the complete sieve plates because they are narrower and can be easily machined in a relatively small boring machine.
  • a high degree of automation is possible in the manufacture and assembly of the parts. In in many cases they can have a smaller wall thickness due to the supporting profile bars have as perforated sieves or sieve shells formed from one piece. It is also important, that depending on the requirement and the size of the throughput in practice of different sizes Flat sieves or sieve baskets are required. While according to the state of the art manufactured strainer baskets of different sizes large and complex Manufacturing plants may require in the inventive method same plant sieve baskets of different diameters and different Height. The same applies to flat screens of different sizes.
  • Fig. 1 you can see the components that are used to manufacture the invention Siebes are needed in an already assembled arrangement, but before Deformation step.
  • the sieve strips 2 contain on their long sides 4 over their longitudinal extent shaped surfaces 5. These are here inclined planes, which are located laterally on the elevations 9 on the sieve strips are located.
  • the profile bars 1 contain mutually opposite grooves 8, which in essentially the above-mentioned shaped surfaces 5 of the sieve strips 2 complementary correspond. In this way there is a form-fit connection between the sieve strips and the profile bars possible.
  • the profile bars 1 are in turn with a joining contour 10 provided, drawn here below, and point at the opposite of the joining contour Page 10, the top, elevations 11.
  • the one, partially drawn here 3 has upwardly open recesses 6 which are at a distance a from one another are introduced. In these recesses 6 are the profile bars 1 with the help of their Anchored contour 10.
  • the distance a and the width b of the sieve strips 2 are so chosen that a close-fitting bond between sieve strips and profile bars arises.
  • Fig. 2 shows a variant in which the profile bars 1 on the joining contour 10th have an elevation 11 on the opposite side of the head, the upper edge of which is chamfered and which takes the angle ⁇ to the top 12 of the adjacent sieve strip. It is useful that the top of the profile bar and the top 12 of the Sieve strip on the scraper side of the sieve, with the scraper side what is meant is, on which - as already mentioned at the beginning - a scraper is moved past. Such bevels have in cooperation with the reamer and the inflowing suspension has a turbulence-increasing effect, which mostly leads to Keeping the sorting openings clear is an advantage.
  • the bevel is like this chosen that, seen in the direction of the scraper movement (arrow R), the flow from the Deflects the surface of the sieve strips.
  • Fig. 2 includes a Sieve strips, viewed in the transverse direction, two rows of sorting openings. How many such rows in the transverse direction of the sieve strips depends on the later operating conditions under which the sieve produced according to the invention should be used from.
  • the design of the head side on the profile bars 1 depends on the Operating conditions of the sieve. As already mentioned, measures can be taken at the Head side lead to desired turbulence, which improve the function of the sieve. Therefore, these profile bars are both a carrying function for the sieve strips and also a hydraulic function, especially because of the possibility of design of the headboard. Cases are conceivable in which the head part is kept as small as possible is so that it essentially adjusts to the course of the upper edge of the sieve. Design options are available for this purpose within the scope of the invention. E.g. can also, but does not have to be reversed, as shown in Fig. 3, the guide geometry. i.e. that the sieve strips 2 'contain grooves 13 and the profile bars 1' projections 14th
  • Fig. 4 shows a perspective view of the example of an invention manufactured arcuate sieve as a partial view. It can become a strainer or too belong to a sieve cylinder (sieve basket). Because the necessary for the production of the sieve Deformation step has taken place, you can see the final arc shape.
  • Fig. 5 is similar in some respects to Fig. 3, but in contrast to this already completes this shaped sieve.
  • Profile bars 1, sieve strips 2 and carrier 3 are through Residual stresses (arrows F) are positively connected to each other, whereby here has formed the shape of a flat plane screen.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Paper (AREA)
  • Steroid Compounds (AREA)

Abstract

To produce a sieve, sieve strips (2) are produced with openings (7) for sorting the fibre suspension. The long sides (4) with identical shape surfaces (5) along their length extension. At least two bar carriers have open recesses (6) at one side, at a given gap (a). Profile rods (1) are made, where the profile at the foot has a joint contour (10) to fit into the carrier recess (6). The sides are profiled with grooves (8) or projections (9), to fit into the shape surfaces (5) at the strips (2). The profile rods (1) are positioned in the carrier (3) recesses (6), parallel to each other, by laying or sliding into place, with the sieve strips (2) parallel to each other between them. The carriers (3) are manipulated into their final shape that, at the same time, distorts the mountings for the profile rods (1) and clamps them in place. Also claimed is a sieve where the carrier (3) is bent into a closed ring, with durably bonded butting ends, to give a cylindrical sieve body, or it is bent into an arc to give a sieve on a circle segment, or the carriers are flat to give a flat sieve body.

Description

Die Erfindung betrifft ein Verfahren gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a method according to the preamble of claim 1.

Ein hierdurch hergestelltes Sieb kann z.B. ein Siebkorb sein, der in Drucksortierern der Zellstoff- und Papierindustrie eingesetzt wird, um die faserstoffhaltige Suspension in einer Art Nachsiebung zu behandeln. Dabei sollen in den meisten Fällen faserfremde Verunreinigungen aufgrund ihrer Größe an einem Siebelement zurückgehalten und dann abgeschieden werden. Die Fasern können dabei zusammen mit einem Teil des Wassers die Sortieröffnungen passieren. Es gibt auch andere Anwendungen solcher Apparate, z.B. um faserstoffhaltige Suspensionen nach der Faserlänge zu fraktionieren oder auch um z.B. unerwünschte Feinststoffe durch das Siebelement passieren zu lassen und die Fasern zurückzuhalten. Grundsätzlich sind solche Maschinen weithin bekannt und werden oft eingesetzt. Die Siebelementeinsätze werden Siebkörbe genannt, wenn sie rotationssymmetrisch, z.B. zylindrisch aufgebaut sind. Um ein Verstopfen der Sortieröffnungen zu verhindern, werden meist sich dicht an ihnen vorbeibewegende Räumer verwendet. Siebe, die nach dem erfindungsgemäßen Verfahren hergestellt sind, können auch außerhalb der Zellstoff- und Papierindustrie Verwendung finden.A sieve produced in this way can e.g. be a strainer basket in pressure sorters the pulp and paper industry is used to the fibrous suspension to be treated in a kind of re-screening. In most cases, non-fibers are said to be Contamination due to their size retained on a screen element and then be deposited. The fibers can together with some of the water Pass sorting openings. There are other uses of such devices, e.g. around to fractionate fiber-containing suspensions according to the fiber length or to e.g. to let unwanted fines through the sieve element and the fibers hold back. Basically, such machines are widely known and are often used. The screen element inserts are called screen baskets if they rotationally symmetrical, e.g. are cylindrical. To clog the Preventing sorting openings will usually move close to them Used reamer. Sieves which are produced by the method according to the invention, can also be used outside of the pulp and paper industry.

Man kann davon ausgehen, daß derartige Maschinen und die darin verwendeten Siebe ihren Zweck in der Regel erfüllen. Wie überall in der Industrie üblich, wird jedoch die ökonomische Seite solcher Trennprozesse sehr wichtig erachtet, weshalb es immer wieder Versuche gegeben hat, die - auch als Verschleißteile anzusehenden - Siebe zu verbilligen. Dabei handelt es sich bei diesen Teilen nämlich um recht teure Gegenstände, die oftmals in bestimmten Abständen zu ersetzen sind. Daher ist das besondere Bemühen der Hersteller solcher Siebe darauf gerichtet, diese möglichst preiswert herstellen zu können. It can be assumed that such machines and the screens used therein usually serve their purpose. As is common throughout the industry, however The economic side of such separation processes is very important, which is why it always does has again attempted to close the screens, which can also be regarded as wearing parts cheaper. These parts are really expensive items, which are often to be replaced at certain intervals. Hence the special effort the manufacturer of such screens aims to produce them as cheaply as possible can.

Bekanntlich gibt es bei den Sieben unterschiedliche Formen der Sortieröffnungen. Man unterscheidet zwischen im wesentlichen runden Öffnungen und länglichen, wobei die länglichen Öffnungen im Extremfall Spalte sind, die über die gesamte Axialerstreckung der Siebkörbe verlaufen. Die Herstellungsverfahren sind an die Sortieröffnungen angepaßt, weshalb sie sich oft für Lochsiebkörbe und Spaltsiebkörbe wesentlich unterscheiden. Bei Spaltsieben sind bereits moderne Herstellungsverfahren gefunden worden, bei denen die Sortieröffnungen, also die Spalte, zwischen parallel angeordneten Stäben gebildet werden. Dieses Verfahren ist aber nach wie vor wegen der Vielzahl der Stäbe sehr aufwendig.As is known, there are different types of sorting openings for the seven. Man distinguishes between essentially round openings and elongated ones, the elongated openings in the extreme case are gaps that extend over the entire axial extent the sieve baskets run. The manufacturing processes are at the sorting openings adapted, which is why they are often essential for perforated screen baskets and slotted screen baskets differentiate. Modern manufacturing processes have already been found for slotted screens in which the sorting openings, i.e. the gaps, are arranged in parallel Rods are formed. However, this procedure is still due to the large number of Bars very expensive.

Bei Lochsieben werden die Sortieröffnungen in der Regel durch an sich bekannte Verfahren, wie z.B. Bohren oder Elektro-Erosion, in eine Blechplatte eingebracht. In speziellen Fällen werden gestanzte Bleche verwendet. Auch wenn die Produktionsabläufe durch automatisch arbeitende Maschinen, insbesondere der Bohrwerke, rationalisiert werden konnten, sind sie immer noch recht teuer.In the case of perforated sieves, the sorting openings are generally known through Methods such as Drilling or electrical erosion, placed in a sheet metal plate. In Stamped sheets are used in special cases. Even if the production processes rationalized by automatically working machines, especially the boring mills they are still quite expensive.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Herstellung von Sieben zu schaffen, mit dem die Kosten reduziert werden können, ohne daß die Qualität schlechter wird. Auch soll der Aufwand bei der Produktion von Sieben von unterschiedlicher Größe gering sein.The invention has for its object to provide a method for producing screens create, with which the costs can be reduced without the quality deteriorating becomes. The effort involved in the production of screens of different sizes should also be be small.

Diese Aufgabe wird durch die im Kennzeichen des Anspruchs 1 genannten Merkmale gelöst.This object is achieved by the features mentioned in the characterizing part of claim 1 solved.

Derartige Siebstreifen sind einfacher zu bohren als die kompletten Siebbleche, da sie schmaler sind und leicht in einem relativ kleinen Bohrwerk bearbeitet werden können. Bei Herstellung und Montage der Teile ist ein hoher Automatisierungsgrad möglich. In vielen Fällen können sie wegen der mittragenden Profilstäbe eine geringere Wandstärke haben als aus einem Stück geformte, gelochte Siebe oder Siebmäntel. Wichtig ist auch, daß je nach Anforderung und Größe des Durchsatzes in der Praxis unterschiedlich große Plansiebe oder Siebkörbe erforderlich sind. Während nach dem Stand der Technik hergestellte Siebkörbe unterschiedlicher Größen große und aufwendige Fertigungsanlagen erfordern, können bei dem erfindungsgemäßen Verfahren auf derselben Anlage Siebkörbe unterschiedlichen Durchmessers und unterschiedlicher Höhe hergestellt werden. Ähnliches gilt auch für ebene Siebe unterschiedlicher Größe.Such sieve strips are easier to drill than the complete sieve plates because they are narrower and can be easily machined in a relatively small boring machine. A high degree of automation is possible in the manufacture and assembly of the parts. In in many cases they can have a smaller wall thickness due to the supporting profile bars have as perforated sieves or sieve shells formed from one piece. It is also important, that depending on the requirement and the size of the throughput in practice of different sizes Flat sieves or sieve baskets are required. While according to the state of the art manufactured strainer baskets of different sizes large and complex Manufacturing plants may require in the inventive method same plant sieve baskets of different diameters and different Height. The same applies to flat screens of different sizes.

Werden mit Hilfe des erfindungsgemäßen Verfahrens Siebkörbe oder Siebschalen hergestellt, entfällt wegen des Aufbaus aus meheren Siebstreifen das problematische Biegen von gelochten, großflächigen Siebblechen, welches dazu führen kann, daß die Siebkörbe nicht ausreichend präzise herstellbar sind.Using the method according to the invention, sieve baskets or sieve trays manufactured, the problematic is eliminated due to the structure of several sieve strips Bending perforated, large-area sieve plates, which can lead to the Sieve baskets cannot be manufactured with sufficient precision.

Die Erfindung und ihre Vorteile werden erläutert anhand von Zeichnungen. Dabei zeigen:

Fig. 1
Teil eines erfindungsgemäß hergestellten Siebes während der Herstellung;
Fig. 2+3
jeweils Varianten mit unterschiedlichen Profilstäben;
Fig. 4
perspektivisch: Teil eines erfindungsgemäß hergestellten Siebes nach Durchführung der Verformung;
Fig. 5
Teilansicht eines durch das Verfahren hergestellten Plansiebes.
The invention and its advantages are explained with reference to drawings. Show:
Fig. 1
Part of a sieve produced according to the invention during manufacture;
Fig. 2 + 3
Variants with different profile bars;
Fig. 4
perspective: part of a sieve produced according to the invention after the deformation has been carried out;
Fig. 5
Partial view of a plane screen produced by the method.

Auf der Fig. 1 erkennt man die Bauteile, die zur Herstellung des erfindungsgemäßen Siebes benötigt werden in bereits gefügter Anordnung, jedoch vor dem Verformungsschritt. Dabei sieht man Siebstreifen 2 mit den bereits eingebrachten Sortieröffnungen 7, die hier beispielhaft von oben nach unten, was der geplanten Strömungsrichtung entspricht, sich konisch erweiternde Bohrungen aufweisen. Selbstverständlich sind auch andere Öffnungsformen denkbar. Die Siebstreifen 2 enthalten an ihren Längsseiten 4 über ihre Längserstreckung Formflächen 5. Diese sind hier schräge Ebenen, die sich seitlich auf den Erhebungen 9 an den Siebstreifen befinden. Die Profilstäbe 1 enthalten beidseitig gegenüberliegende Nuten 8, welche im wesentlichen den genannten Formflächen 5 der Siebstreifen 2 komplementär entsprechen. Auf diese Weise ist ein Formfügeverbund zwischen den Siebstreifen und den Profilstäben möglich. Die Profilstäbe 1 ihrerseits sind mit einer Fügekontur 10 versehen, hier unten gezeichnet, und weisen an der der Fügekontur entgegengesetzten Seite 10, der Kopfseite, Erhebungen 11 auf. Der eine, hier teilweise gezeichnete Träger 3 hat nach oben hin offene Ausnehmungen 6, die in einem Abstand a zueinander eingebracht sind. In diese Ausnehmungen 6 sind die Profilstäbe 1 mit Hilfe ihrer Fügekontur 10 verankert. Der Abstand a und die Breite b der Siebstreifen 2 sind so gewählt, daß ein eng anliegender Verbund zwischen Siebstreifen und Profilstäben entsteht.On Fig. 1 you can see the components that are used to manufacture the invention Siebes are needed in an already assembled arrangement, but before Deformation step. You can see sieve strips 2 with the ones already inserted Sorting openings 7, which are exemplary from top to bottom of what is planned Direction of flow corresponds, have conically widening bores. Of course, other opening shapes are also conceivable. The sieve strips 2 contain on their long sides 4 over their longitudinal extent shaped surfaces 5. These are here inclined planes, which are located laterally on the elevations 9 on the sieve strips are located. The profile bars 1 contain mutually opposite grooves 8, which in essentially the above-mentioned shaped surfaces 5 of the sieve strips 2 complementary correspond. In this way there is a form-fit connection between the sieve strips and the profile bars possible. The profile bars 1 are in turn with a joining contour 10 provided, drawn here below, and point at the opposite of the joining contour Page 10, the top, elevations 11. The one, partially drawn here 3 has upwardly open recesses 6 which are at a distance a from one another are introduced. In these recesses 6 are the profile bars 1 with the help of their Anchored contour 10. The distance a and the width b of the sieve strips 2 are so chosen that a close-fitting bond between sieve strips and profile bars arises.

Fig. 2 zeigt eine Variante, bei der die Profilstäbe 1 auf der der Fügekontur 10 gegenüberliegenden Kopfseite eine Erhebung 11 aufweisen, deren Oberkante abgeschrägt ist und die zur Oberseite 12 des benachbarten Siebstreifens den Winkel α einnimmt. Zweckmäßig ist es, daß die Kopfseite des Profilstabes sowie die Oberseite 12 des Siebstreifens auf der Räumerseite des Siebes liegen, wobei mit Räumerseite die Seite gemeint ist, auf der - wie bereits eingangs erwähnt - ein Räumer vorbeibewegt wird. Derartige Abschrägungen haben im Zusammenwirken mit dem Räumer und der anströmenden Suspension eine turbulenzerhöhende Wirkung, was zumeist zur Freihaltung der Sortieröffnungen von Vorteil ist. In der Regel wird die Abschrägung so gewählt, daß sie, in Räumerbewegungsrichtung (Pfeil R) gesehen, die Strömung von der Oberfläche der Siebstreifen weglenkt. Bei dem in Fig. 2 gezeigten Beispiel enthält ein Siebstreifen, in Querrichtung betrachtet, zwei Reihen von Sortieröffnungen. Wieviele solcher Reihen in Querrichtung der Siebstreifen angeordnet werden, hängt von den späteren Einsatzbedingungen, unter denen das erfindungsgemäß hergestellte Sieb benutzt werden soll, ab.Fig. 2 shows a variant in which the profile bars 1 on the joining contour 10th have an elevation 11 on the opposite side of the head, the upper edge of which is chamfered and which takes the angle α to the top 12 of the adjacent sieve strip. It is useful that the top of the profile bar and the top 12 of the Sieve strip on the scraper side of the sieve, with the scraper side what is meant is, on which - as already mentioned at the beginning - a scraper is moved past. Such bevels have in cooperation with the reamer and the inflowing suspension has a turbulence-increasing effect, which mostly leads to Keeping the sorting openings clear is an advantage. As a rule, the bevel is like this chosen that, seen in the direction of the scraper movement (arrow R), the flow from the Deflects the surface of the sieve strips. In the example shown in Fig. 2, includes a Sieve strips, viewed in the transverse direction, two rows of sorting openings. How many such rows in the transverse direction of the sieve strips depends on the later operating conditions under which the sieve produced according to the invention should be used from.

Die Ausgestaltung der Kopfseite an den Profilstäben 1 richtet sich nach den Einsatzbedingungen des Siebes. Wie bereits erwähnt, können Maßnahmen an der Kopfseite zu gewünschten Turbulenzen führen, die die Funktion des Siebes verbessern. Daher fällt diesen Profilstäben sowohl eine Tragefunktion für die Siebstreifen zu, als auch eine hydraulische Funktion, insbesondere wegen der Möglichkeit zur Ausgestaltung des Kopfteiles. Es sind Falle denkbar, bei denen der Kopfteil möglichst klein gehalten wird, so daß er sich im wesentlichen an den Verlauf der Oberkante des Siebes angleicht. Hierzu sind im Rahmen der Erfindung Gestaltungsmöglichkeiten vorhanden. Z.B. kann auch, muß aber nicht, wie in Fig. 3 gezeigt, die Führungsgeometrie umgekehrt werden. d.h. daß die Siebstreifen 2' Nuten 13 enthalten und die Profilstäbe 1' Vorsprünge 14.The design of the head side on the profile bars 1 depends on the Operating conditions of the sieve. As already mentioned, measures can be taken at the Head side lead to desired turbulence, which improve the function of the sieve. Therefore, these profile bars are both a carrying function for the sieve strips and also a hydraulic function, especially because of the possibility of design of the headboard. Cases are conceivable in which the head part is kept as small as possible is so that it essentially adjusts to the course of the upper edge of the sieve. Design options are available for this purpose within the scope of the invention. E.g. can also, but does not have to be reversed, as shown in Fig. 3, the guide geometry. i.e. that the sieve strips 2 'contain grooves 13 and the profile bars 1' projections 14th

Fig. 4 zeigt in perspektivischer Darstellung das Beispiel eines erfindungsgemäß hergestellten bogenförmigen Siebes als Teilansicht. Es kann zu einer Siebschale oder zu einem Siebzylinder (Siebkorb) gehören. Da der zur Herstellung des Siebes notwendige Verformungsschritt erfolgt ist, erkennt man die endgültige Bogenform.Fig. 4 shows a perspective view of the example of an invention manufactured arcuate sieve as a partial view. It can become a strainer or too belong to a sieve cylinder (sieve basket). Because the necessary for the production of the sieve Deformation step has taken place, you can see the final arc shape.

Fig. 5 ähnelt in manchem der Fig. 3, stellt aber im Gegensatz zu dieser das bereits fertig geformte Sieb dar. Profilstäbe 1, Siebstreifen 2 und Träger 3 sind durch Eigenspannungen (Pfeile F) formschlüssig fest miteinander verbunden, wobei sich hier die Form eines ebenen Plansiebes gebildet hat.Fig. 5 is similar in some respects to Fig. 3, but in contrast to this already completes this shaped sieve. Profile bars 1, sieve strips 2 and carrier 3 are through Residual stresses (arrows F) are positively connected to each other, whereby here has formed the shape of a flat plane screen.

Nicht ausdrücklich dargestellt sind solche Maßnahmen, mit denen an den Kontaktflächen zusätzliche Verbindungen durch Löten, Kleben oder Schweißen hergestellt werden. Die Maßnahmen selbst sind dem Fachmann an sich bekannt. Dadurch läßt sich in schwierigen Anwendungsfällen die Festigkeit des Siebes weiter erhöhen.Such measures are not expressly shown with those on the contact surfaces additional connections can be made by soldering, gluing or welding. The Measures themselves are known to the person skilled in the art. This allows in difficult applications further increase the strength of the sieve.

Das im Vorstehenden beschriebene Sieb eignet sich insbesonders zum Aufbau eines Sichters zum Sortieren von Papierstoffsuspensionen.
Dabei wechseln sich

  • in Umfangsrichtung gesehen Siebstreifen (2) mit Profilstäben (1) ab.
  • Die Siebstreifen (2) weisen eine Vielzahl von Sortieröffnungen (7) auf und die Profilstäbe (1) ragen über die angeströmte Flache der Siebstreifen (2) hinaus.
The sieve described above is particularly suitable for setting up a sifter for sorting paper stock suspensions.
This changes
  • seen in the circumferential direction from sieve strips (2) with profile bars (1).
  • The sieve strips (2) have a multiplicity of sorting openings (7) and the profiled bars (1) protrude beyond the surface of the sieve strips (2) against which they flow.

Claims (21)

Verfahren zur Herstellung von Sieben, welche eine Vielzahl von Sortieröffnungen (7) aufweisen,
gekennzeichnet durch folgende Schritte: Siebstreifen (2,2') mit Sortieröffnungen (7) werden hergestellt, welche an den Längsseiten (4) mit über ihre Längserstreckung gleichen Formflächen (5,5') versehen sind, mindestens zwei leistenförmige Träger (3) werden an einer Seite mit Ausnehmungen (6) in einem bestimmten Abstand (a) versehen, welche zu dieser Seite offen sind, Profilstäbe (1,1') werden hergestellt, deren Profil auf einer Seite (Fußseite) eine Fügekontur (10) hat, die den Ausnehmungen (6) in den leistenförmigen Trägern (3) im wesentlichen komplementär entspricht und das außerdem beidseitig gegenüberliegende Nuten (8) oder Vorspünge (14) enthält, welche zumindest teilweise denjenigen der Formflächen (5,5') der Siebstreifen (2,2') komplentär entsprechen, die Profilstäbe (1,1') werden parallel zueinander in die Ausnehmungen (6) der Träger (3) eingelegt oder eingeschoben, die Siebstreifen (2,2') werden parallel zueinander jeweils zwischen die Profilstäbe (1,1') geschoben, die Träger (3) werden durch Verformung in ihre endgültige Form gebracht, wobei durch die Verformung die formschlüssig eingesetzten Profilstäbe (1,1') eingeklemmt werden. Process for the production of screens which have a plurality of sorting openings (7),
characterized by the following steps: Sieve strips (2, 2 ') with sorting openings (7) are produced, which are provided on the long sides (4) with shaped surfaces (5, 5') that are the same over their longitudinal extent, at least two strip-shaped supports (3) are provided on one side with recesses (6) at a certain distance (a) which are open on this side, Profile bars (1, 1 ') are produced, the profile of which has a joining contour (10) on one side (foot side), which essentially corresponds to the recesses (6) in the strip-shaped carriers (3) and which also has grooves (8 ) or protrusions (14) which at least partially correspond to those of the shaped surfaces (5,5 ') of the sieve strips (2,2'), the profile bars (1, 1 ') are inserted or inserted parallel to one another in the recesses (6) of the supports (3), the sieve strips (2,2 ') are pushed parallel to each other between the profile bars (1,1'), the carriers (3) are brought into their final shape by deformation, the profile rods (1, 1 ') inserted in a form-fitting manner being clamped in by the deformation. Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß die Ausnehmungen (6) in den leistenförmigen Trägern (3) durchweg den gleichen Abstand (a) voneinander und die Siebstreifen (2,2') durchweg die gleiche Breite (b) haben. Method according to claim 1,
characterized by that the recesses (6) in the strip-shaped carriers (3) consistently the same distance (a) from one another and the sieve strips (2,2 ') consistently have the same width (b). Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß das Profil der Profilstäbe (1,1') auf der der Fügekontur (10) gegenüberliegenden Seite (Kopfseite) eine über die Nut (8) oder den Vorsprung (14) hinausgehende Erhebung (11) aufweist. The method of claim 1 or 2,
characterized by that the profile of the profile bars (1, 1 ') on the side opposite the joining contour (10) (head side) has an elevation (11) which extends beyond the groove (8) or the projection (14). Verfahren nach Anspruch 3,
dadurch gekennzeichnet, daß die Erhebung (11) in Räumerbewegungsrichtung (R) betrachtet relativ zur Oberseite (12) der Siebstreifen (2) eine Schräge mit einem Winkel α zwischen 0 und 30° aufweist. Method according to claim 3,
characterized by that the elevation (11) viewed in the direction of the scraper movement (R) relative to the upper side (12) of the sieve strips (2) has a slope with an angle α between 0 and 30 °. Verfahren nach Anspruch 1,2,3 oder 4,
dadurch gekennzeichnet, daß die Formflächen (5) an den Seiten der Siebstreifen (2) durch Erhebungen (9) gebildet werden und die Profilstäbe (1) hierzu komplementäre Nuten (8) aufweisen. Method according to claim 1, 2, 3 or 4,
characterized, that the shaped surfaces (5) on the sides of the sieve strips (2) are formed by elevations (9) and the profile bars (1) have complementary grooves (8). Verfahren nach Anspruch 1,2,3 oder 4,
dadurch gekennzeichnet, daß die Formflächen (5') der Siebstreifen (2') durch Nuten (13) gebildet werden und die Profilstäbe (1') dazu komplementäre Vorsprünge (14) enthalten. Method according to claim 1, 2, 3 or 4,
characterized, that the shaped surfaces (5 ') of the sieve strips (2') are formed by grooves (13) and the profile bars (1 ') contain complementary projections (14). Verfahren nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, daß die Siebstreifen (2,2'), in ihrer Querrichtung betrachtet, eine Mehrzahl von Reihen von Sortieröffnungen (7) enthalten. Method according to one of the preceding claims,
characterized, that the sieve strips (2,2 '), viewed in their transverse direction, contain a plurality of rows of sorting openings (7). Verfahren nach Anspruch 7,
dadurch gekennzeichnet, daß die Siebstreifen (2,2'), in in ihrer Querrichtung betrachtet, jeweils nur eine Reihe von Sortieröffnungen (7) enthalten. Method according to claim 7,
characterized by that the sieve strips (2,2 '), viewed in their transverse direction, each contain only one row of sorting openings (7). Verfahren nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, daß die Träger (3) durch plastische Verformung zu Ringsegmenten gebogen werden. Method according to one of the preceding claims,
characterized, that the carrier (3) are bent by plastic deformation into ring segments. Verfahren nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet, daß die Träger (3) durch plastische Verformung zu in sich geschlossenen Ringen gebogen werden. Method according to one of claims 1 to 8,
characterized, that the carrier (3) are bent by plastic deformation into self-contained rings. Verfahren nach Anspruch 10,
dadurch gekennzeichnet, daß die Stoßflächen der Träger (3) miteinander nicht lösbar, z.B. durch Löten oder Schweißen verbunden werden. A method according to claim 10,
characterized, that the abutting surfaces of the supports (3) cannot be detached from one another, for example by soldering or welding. Verfahren nach Anspruch 9, 10 oder 11,
dadurch gekennzeichnet, daß die Krümmungsmittellinie beim Verformen der Träger (3) auf der Seite der Siebstreifen (2,2') liegt. The method of claim 9, 10 or 11,
characterized, that the center of curvature lies on the side of the sieve strips (2, 2 ') when the supports (3) are deformed. Verfahren nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet, daß die Träger (3) durch elastische Rück-Verformung nach dem Zusammenfügen von Trägern (3), Siebstreifen (2,2') und Profilstäben (1,1') in ihre endgültige Form gebracht werden. Method according to one of claims 1 to 8,
characterized, that the beams (3) are brought into their final shape by elastic back-deformation after the joining of beams (3), sieve strips (2,2 ') and profiled bars (1,1'). Verfahren nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, daß die Sortieröffnungen (7) Löcher mit Durchmesser zwischen 1 und 6 mm sind. Method according to one of the preceding claims,
characterized by that the sorting openings (7) are holes with a diameter between 1 and 6 mm. Verfahren nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, daß auch zwischen den Formflächen der Siebstreifen (2,2') und den Profilstäben (1,1') durch Verformung der Träger (3) eine Klemmverbindung erzeugt wird. Method according to one of the preceding claims,
characterized, that a clamping connection is also produced between the shaped surfaces of the sieve strips (2,2 ') and the profiled bars (1,1') by deforming the supports (3). Verfahren nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, daß zumindest ein Teil der Klemmverbindungen zusätzlich durch eine nicht lösbare Verbindung, wie z.B. Löten verstärkt wird. Method according to one of the preceding claims,
characterized, that at least some of the clamp connections are additionally reinforced by a non-releasable connection, such as soldering. Sieb mit einer Vielzahl von Sortieröffnungen (7), hergestellt durch das Verfahren nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, daß sich die Sortieröffnungen (7) in parallel angeordneten Siebstreifen (2,2') befinden, die an ihren Seiten Formflächen (5,5') aufweisen, daß sich an den Formflächen (5,5') benachbarter Siebstreifen (2,2') parallel dazu liegende Profilstäbe (1) befinden, welche zu den Formflächen der Siebstreifen passende Kontaktflächen aufweisen, die mit den Formflächen zumindest teilweise einen Formschluß bilden, wobei die Profilstäbe (1,1') auf mindestens einer Seite über die Siebstreifen (2,2') vorstehen und dort, zumindest teilweise, in mindestens zwei Trägern (3) formschlüssig eingeklemmt sind, wozu der Träger (3) an den entsprechenden Stellen Ausnehmungen (6) für die vorstehenden Teile der Profilstäbe (1,1') aufweist. Sieve with a plurality of sorting openings (7), produced by the method according to one of the preceding claims,
characterized, that the sorting openings (7) are located in parallel sieve strips (2,2 ') which have shaped surfaces (5,5') on their sides, that on the shaped surfaces (5,5 ') of adjacent sieve strips (2,2') there are parallel profile bars (1) which have contact surfaces which match the shaped surfaces of the sieve strips and which at least partially form a positive fit with the shaped surfaces, the Profile bars (1, 1 ') protrude over the sieve strips (2, 2') on at least one side and there, at least partially, are positively clamped in at least two supports (3), for which purpose the support (3) has recesses ( 6) for the projecting parts of the profile bars (1,1 '). Sieb nach Anspruch 17,
dadurch gekennzeichnet, daß die Träger (3) einen vollständigen Kreisring mit unlösbar verbundenen Stoßflächen bilden, wodurch ein zylindrischer Siebkorb entsteht. Sieve according to claim 17,
characterized by that the carrier (3) form a complete circular ring with non-detachably connected abutting surfaces, whereby a cylindrical screen basket is formed. Sieb nach Anspruch 17,
dadurch gekennzeichnet, daß die Träger (3) einen Kreisringabschnitt bilden, wodurch eine zylindrische Siebschale entsteht. Sieve according to claim 17,
characterized, that the carrier (3) form an annular section, whereby a cylindrical sieve shell is formed. Sieb nach Anspruch 17,
dadurch gekennzeichnet, daß die Träger (3) eben sind, wodurch ein Plansieb entsteht. Sieve according to claim 17,
characterized, that the carrier (3) are flat, which creates a plane screen. Sieb nach einem der Anprüche 17 bis 20,
gekennzeichnet durch
seine Verwendung zum Aufbau eines Sichters zum Sortieren von Papierstoffsuspension, wobei a) in Umfangsrichtung gesehen sich Siebstreifen (2) mit Profilstäben (1) abwechseln, b) die Siebstreifen (2) eine Vielzahl von Sortieröffnungen (7) aufweisen und c) die Profilstäbe (1) über die angeströmte Fläche der Siebstreifen (2) hinausragen. Sieve according to one of claims 17 to 20,
marked by
its use to build a classifier for sorting pulp suspension, wherein a) seen in the circumferential direction, screen strips (2) alternate with profile bars (1), b) the sieve strips (2) have a plurality of sorting openings (7) and c) the profile bars (1) protrude beyond the flow area of the sieve strips (2).
EP97114817A 1996-08-30 1997-08-27 Process for making screens and screen obtained by this method Expired - Lifetime EP0837178B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19635189 1996-08-30
DE19635189A DE19635189C2 (en) 1996-08-30 1996-08-30 Process for the production of sieves

Publications (2)

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EP0837178A1 true EP0837178A1 (en) 1998-04-22
EP0837178B1 EP0837178B1 (en) 2001-12-19

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US (1) US6092286A (en)
EP (1) EP0837178B1 (en)
AT (1) ATE211194T1 (en)
DE (2) DE19635189C2 (en)
ES (1) ES2170309T3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408773B (en) * 2000-02-03 2002-03-25 Andritz Ag Maschf SCREEN AND METHOD FOR PRODUCING SUCH A SCREEN
DE10052715A1 (en) * 2000-10-24 2002-05-02 Fiedler Heinrich Gmbh slotted screen
DE10148192A1 (en) * 2001-09-28 2003-04-17 Fiedler Heinrich Gmbh slotted screen
CN108348961A (en) * 2015-06-30 2018-07-31 欧盛腾集团公司 Rotary screen screen holding device

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19836316C2 (en) * 1998-08-11 2000-06-15 Voith Sulzer Papiertech Patent Process for the production of curved sieves
US7125491B2 (en) * 2000-02-03 2006-10-24 Andritz Ag Screen and process for manufacturing a screen of this kind
FR2809029B1 (en) * 2000-05-16 2002-06-21 Johnson Filtration Systems METHOD FOR MANUFACTURING A MECHANICAL FILTRATION BASKET
DE10217926A1 (en) * 2002-04-23 2003-11-13 Voith Paper Patent Gmbh Process for wet screening of fiber suspensions
DE10258324B4 (en) * 2002-12-13 2008-03-27 Voith Patent Gmbh Process for the production of sets for the milling of hydrous paper pulp
CN101171390B (en) * 2005-05-09 2011-04-13 纺织过滤材料股份有限公司 Screen basket and screen basket assembling method
TW200736458A (en) * 2006-03-24 2007-10-01 Slit And Hole Industry Co Ltd A sieve (screen) can prevent sieve bars from falling off
DE102006030892A1 (en) * 2006-07-04 2008-01-10 Voith Patent Gmbh Method of making sieves and sieve made thereby
EP2222916B1 (en) * 2007-11-14 2015-06-24 Kadant Canada Corp. Screen basket
US20090211965A1 (en) * 2008-02-21 2009-08-27 Weatherford/Lamb, Inc. Arrangement for splicing panels together to form a cylindrical screen
US8028691B2 (en) * 2008-10-27 2011-10-04 Johnson Screens, Inc. Passive solar wire screens for buildings
DE102009015405A1 (en) * 2009-03-27 2010-09-30 Voith Patent Gmbh scree
DE102011003096A1 (en) 2011-01-25 2012-07-26 Voith Patent Gmbh Screening apparatus for treating fibrous material suspension used in paper making industry, has wire holder which are provided several ring layers that are connected with each other
US9023456B2 (en) 2011-03-18 2015-05-05 Bilfinger Water Technologies, Inc. Profiled wire screen for process flow and other applications

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423442A (en) * 1945-02-28 1947-07-08 Nat Lead Co Drum screen
US2588533A (en) * 1946-11-29 1952-03-11 Johnson Victor Paper pulp screen plates and support means for the same
EP0417408A1 (en) * 1989-08-23 1991-03-20 J.M. Voith GmbH Process for making a screen drum and screen drum made according to the process

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3307916A1 (en) * 1983-03-05 1984-09-06 Hein, Lehmann AG, 4000 Düsseldorf SCREEN COVER WITH INTERCHANGEABLE SCREEN ELEMENTS
DE3425485A1 (en) * 1984-07-11 1986-01-16 Hein, Lehmann AG, 4000 Düsseldorf SCREENING
FR2612081B1 (en) * 1987-03-13 1991-02-08 Lamort E & M IMPROVEMENT IN SCREENS FOR PURIFIER AND THEIR MANUFACTURE
DE3816152A1 (en) * 1987-11-14 1989-11-23 Voith Gmbh J M SCREEN BASKET AND METHOD FOR THE PRODUCTION THEREOF
US5047148A (en) * 1990-04-24 1991-09-10 Koichi Arai Retained wire filter element
DE4121896A1 (en) * 1991-07-02 1993-01-07 Fiedler Heinrich Gmbh SCREEN ELEMENT
DE4303892C2 (en) * 1993-02-10 2001-07-12 Ludwig Krieger Draht Und Kunst Screen covering
SE501110C2 (en) * 1993-04-21 1994-11-14 Kvaerner Pulping Tech Screening means with a screen body and method and apparatus for the screen body manufacture
US5387340A (en) * 1993-07-15 1995-02-07 Ackerman; Carl D. Wire filter element and method of manufacture
CA2111147A1 (en) * 1993-12-13 1995-06-14 Jacques Riendeau Method of manufacturing a screen cylinder and a screen cylinder produced by the method
US5394600A (en) * 1994-02-14 1995-03-07 Chen; Chao-Ho Method for making a screen
US5513757A (en) * 1994-06-02 1996-05-07 Sulzer Papertec Mansfield Inc. Continuous cut slotted screen basket
DE4435538C2 (en) * 1994-10-05 1996-10-02 Voith Gmbh J M Process for the production of a flat screen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423442A (en) * 1945-02-28 1947-07-08 Nat Lead Co Drum screen
US2588533A (en) * 1946-11-29 1952-03-11 Johnson Victor Paper pulp screen plates and support means for the same
EP0417408A1 (en) * 1989-08-23 1991-03-20 J.M. Voith GmbH Process for making a screen drum and screen drum made according to the process

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408773B (en) * 2000-02-03 2002-03-25 Andritz Ag Maschf SCREEN AND METHOD FOR PRODUCING SUCH A SCREEN
DE10052715A1 (en) * 2000-10-24 2002-05-02 Fiedler Heinrich Gmbh slotted screen
DE10148192A1 (en) * 2001-09-28 2003-04-17 Fiedler Heinrich Gmbh slotted screen
CN108348961A (en) * 2015-06-30 2018-07-31 欧盛腾集团公司 Rotary screen screen holding device

Also Published As

Publication number Publication date
DE59705868D1 (en) 2002-01-31
ATE211194T1 (en) 2002-01-15
DE19635189C2 (en) 1999-01-28
US6092286A (en) 2000-07-25
EP0837178B1 (en) 2001-12-19
DE19635189A1 (en) 1998-03-05
ES2170309T3 (en) 2002-08-01

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