EP0808941A1 - Procédé de fabrication d'un appareil de tamisage à ouvertures en forme de fentes et appareil de tamisage produit par ce procédé - Google Patents

Procédé de fabrication d'un appareil de tamisage à ouvertures en forme de fentes et appareil de tamisage produit par ce procédé Download PDF

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Publication number
EP0808941A1
EP0808941A1 EP97104439A EP97104439A EP0808941A1 EP 0808941 A1 EP0808941 A1 EP 0808941A1 EP 97104439 A EP97104439 A EP 97104439A EP 97104439 A EP97104439 A EP 97104439A EP 0808941 A1 EP0808941 A1 EP 0808941A1
Authority
EP
European Patent Office
Prior art keywords
rods
reinforcing elements
sorting
recesses
depressions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97104439A
Other languages
German (de)
English (en)
Other versions
EP0808941B1 (fr
Inventor
Klaus Dölle
Rudolf Kleinert
Joachim Nittke
Reimund Rienecker
Peter Schweiss
Gerhard Veh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Paper Fiber and Environmental Solutions GmbH and Co KG
Original Assignee
Voith Sulzer Stoffaufbereitung GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26034649&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0808941(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE29609298U external-priority patent/DE29609298U1/de
Application filed by Voith Sulzer Stoffaufbereitung GmbH filed Critical Voith Sulzer Stoffaufbereitung GmbH
Publication of EP0808941A1 publication Critical patent/EP0808941A1/fr
Application granted granted Critical
Publication of EP0808941B1 publication Critical patent/EP0808941B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4618—Manufacturing of screening surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/12—Apparatus having only parallel elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/18—Drum screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4681—Meshes of intersecting, non-woven, elements
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/902—Filter making
    • 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
    • Y10T29/49925—Inward deformation of aperture or hollow body wall

Definitions

  • the invention relates to a method according to the preamble of claim 1.
  • a well-known example of the use of screening devices which can be produced by the method of this type is the sorting of fiber suspensions.
  • the fibers contained in the suspension should pass through the sieve while the undesired solid constituents at the gap are rejected and led out of the sieve device.
  • An application for the separation of different fiber components is also conceivable.
  • the fact that the openings have an essentially elongated shape, that is to say slits or slits allows fibrous particles to pass through more easily than cubic particles, even if both types should be of a similar size.
  • a very good separation effect of seam-fibrous interfering substances from fiber suspensions is possible.
  • a prerequisite is a high precision of the slot shape on the entire screen surface.
  • DE 39 27 748 A1 shows a method for producing such screen baskets, in which the profiled bars are clamped in by plastic deformation of the retaining rings provided with depressions for the bars.
  • profile bars are used for such manufacturing processes.
  • Sieves or sieve baskets with good strength and high surface quality can be produced by a process which is described in DE 42 14 061 A1. Here a high-temperature soldering process is used to attach the rod-like profiles. The results are excellent, but the process is complex and expensive.
  • the invention has for its object to provide an economically advantageous method with which sieve devices can be produced that have optimal strength and surface properties.
  • the advantages of the invention have an effect particularly in the case of rod screen devices whose sorting slots have a width in a size range of less than 2 mm. Slit widths of 0.1 - 0.2 mm are quite common for fiber sorting or washing. Such screens have to be provided with a very large number of rods in order to obtain a sufficient screen area in the narrow slots. Therefore, with her Manufacturing the preparation for assembly is very complex. In series production it is possible to use special devices, but these are also complex and expensive. In the method according to the invention, however, the profile bars are z. B. brought into position by simple insertion, fixed and remain in it until the binder has provided the final firm hold.
  • a holding force of the rods in the recesses is therefore provided which is large enough to be able to carry out the handling operations following the insertion without inadvertently changing the position.
  • This handling includes, for example, the transport and turning of these semi-finished products.
  • the binder creates an inseparable connection on the contact surfaces, such as when soldering, gluing or welding. In pure contact welding, the binder comes as a melt from the components themselves.
  • Such a screening apparatus with advantage in the manufacture applicable soldering process the brazing at a temperature up to about 900 o C. It is but may also be a process at high temperatures of about 1000 to 1200 select o C, which is carried out in a high vacuum.
  • the materials of rods and reinforcing elements are connected by diffusion of the solder into the areas to be connected, which results in very high strength with a flawless surface.
  • the latter soldering process initially requires high investments.
  • Gluing can also be regarded as an inexpensive connection, since it can be carried out at relatively low temperatures. E.g. If a technical two-component adhesive is used, the clamping forces are retained. This can e.g. the possibly lower strength of the adhesive connection can be compensated. If drawn profiles are used for the rods, for example made of steel or a steel alloy, special cross-sectional shapes are also economically and precisely available.
  • a special case is the widening of the depressions by elastic deformation of the reinforcing elements before the rods are inserted or inserted. After the relief, i.e. the reshaping, this leads to a secure fit and, at the same time, good properties of the screening device produced in this way.
  • the tolerances do not have to be as narrow as with the method that works without deformation.
  • the elastic deformation can also be kept low. Relatively low holding forces are sufficient since only the position of the bars is to be secured during handling.
  • a particularly important application is the use of straight strip-shaped reinforcing elements with the depressions already described.
  • the final shape of the screening device can be produced by subsequent bending, for example round rolling of the reinforcing elements.
  • the rods are clamped in the same operation and thus their fixation required for the further manufacturing process.
  • a further reduction in the cost of the method is possible if the depressions in the reinforcing elements are designed in such a way that the rods can be inserted vertically, possibly with compressive forces, so that they do not have to be pushed from the side.
  • the fixation of the rods in the reinforcing elements until the end of the Manufacturing process can, but need not, then take place by deforming the reinforcing elements.
  • FIGS. 1 a - 1 c The most important manufacturing steps of the method according to the invention are schematically recorded in FIGS. 1 a - 1 c.
  • 1 a shows the part of a reinforcing element 1 with the recesses 4 which have already been introduced.
  • a common method for producing such recesses is, for example, laser welding. To achieve higher precision, electrical erosion can also be useful.
  • the reinforcing element contains a large number of such depressions in the production of the usual screening devices.
  • Fig. 1 b three rods 2 are already inserted into the recesses, it being evident that the shape of the recess on the sides of the rod 2 leaves some air in each case. This makes it easy to insert the rod.
  • the section in Fig. 2 shows a perspective view of part of the Reinforcing element 1, in which the rods 2 are inserted and already fastened therein. It can be seen that a slot sieve with the gaps 3 has formed through this arrangement, through which the liquid to be sorted can pass in the direction of flow (arrow S). In operation, parts the size of which exceed the free gap width are retained and removed in a manner known per se. A recess 4 for receiving a rod is shown here without the rod.
  • the binder 5 indicated as a fat line can be introduced by soldering, welding or gluing. It forms a firm, non-detachable bond between the contact surfaces and thus decisively increases the strength of the screening device. In cases where the optimal cross-section of the bars was not chosen, e.g. because the sorting task required special shapes, the strength can still be high enough.
  • the sieve device produced according to the invention can be designed as a cylindrical sieve basket which is held together by a plurality of annular reinforcing elements 1.
  • the illustration shows only a part of the existing rods 2, which are inserted radially inside the rings here. Of course, these could also have been inserted outside.
  • the bars 2 will be inserted deeper or less deep into the reinforcing element 1. So, as shown in Fig. 4, almost completely recessed rods are also conceivable. This enables a particularly secure connection of rods 2 and reinforcing elements 1.
  • the depressions 4 in the reinforcing elements 1 are designed as openings.
  • the bars 2 have to be inserted laterally, whereby they have a hold even without deformation of the reinforcing element, e.g. if it is a press fit or a shrink fit. This is e.g. with tight fitting tolerances or with different temperatures of the joining partners when assembling.
  • the profiles of the bars used can be freely selected according to the usage criteria (sorting technology) of the screening device. Another shape suitable for lateral insertion is shown in FIG. 6.
  • FIG. 7 shows a section through a screening device designed as a half-shell.
  • an arrangement is selected as an example in which the rods 2 are inserted on the radially outer part.
  • the fixation could be carried out here by elastically bending the semi-ring-shaped reinforcing element 1 and releasing it after inserting the rods 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Paper (AREA)
  • Combined Means For Separation Of Solids (AREA)
EP97104439A 1996-05-24 1997-03-15 Procédé de fabrication d'un appareil de tamisage à ouvertures en forme de fentes et appareil de tamisage produit par ce procédé Revoked EP0808941B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE29609298U DE29609298U1 (de) 1996-05-24 1996-05-24 Siebvorrichtung mit spaltförmigen Öffnungen
DE29609298U 1996-05-24
DE19709582 1997-03-08
DE19709582A DE19709582C2 (de) 1996-05-24 1997-03-08 Verfahren zur Herstellung einer Siebvorrichtung mit spaltförmigen Öffnungen

Publications (2)

Publication Number Publication Date
EP0808941A1 true EP0808941A1 (fr) 1997-11-26
EP0808941B1 EP0808941B1 (fr) 2001-12-12

Family

ID=26034649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97104439A Revoked EP0808941B1 (fr) 1996-05-24 1997-03-15 Procédé de fabrication d'un appareil de tamisage à ouvertures en forme de fentes et appareil de tamisage produit par ce procédé

Country Status (4)

Country Link
US (1) US6047834A (fr)
EP (1) EP0808941B1 (fr)
AT (1) ATE210756T1 (fr)
CA (1) CA2203325C (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001061104A1 (fr) * 2000-02-19 2001-08-23 Hermann Finckh Maschinenfabrik Gmbh & Co. Tamis pour suspensions de fibres et son procede de production
WO2008119548A3 (fr) * 2007-04-02 2009-01-15 Andritz Fiedler Gmbh Dispositif de filtration
EP1825933A3 (fr) * 2006-02-22 2011-03-09 Voith Patent GmbH Procédé de fabrication d'un dispositifl de criblage à rotation symmétrique, en particulier cylindrique
EP1825932A3 (fr) * 2006-02-22 2011-03-09 Voith Paper Patent GmbH Procédé de fabrication d'un dispositif de criblage à rotation symétrique, en particulier cylindrique
EP2663688A4 (fr) * 2011-01-13 2014-06-25 Georgia Pacific Consumer Prod Tamis optimisé pour retirer des matières collantes d'une fibre recyclable contaminée par des adhésifs

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2809029B1 (fr) * 2000-05-16 2002-06-21 Johnson Filtration Systems Procede de fabrication d'un panier mecanique de filtration
IT1315545B1 (it) * 2000-11-13 2003-02-18 Comer Spa Metodo per la fabbricazione di cestelli filtranti per macchine difiltrazione di fibre in sospensione acquosa e cestello filtrante
FI119440B (fi) * 2004-07-16 2008-11-14 Advanced Fiber Tech Aft Trust Menetelmä seulasylinterin valmistamiseksi ja seulasylinteri
JP4376151B2 (ja) * 2004-08-09 2009-12-02 相川鉄工株式会社 スクリーン装置
US20090020461A1 (en) * 2005-05-09 2009-01-22 Filtration Fibrewall Inc. Screen Basket with Replaceable Profiled Bars
JP5465181B2 (ja) * 2007-11-14 2014-04-09 フィルトレーション・ファイバーウォール・インコーポレーテッド スクリーンバスケット
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
US9023456B2 (en) 2011-03-18 2015-05-05 Bilfinger Water Technologies, Inc. Profiled wire screen for process flow and other applications
DE102014011679A1 (de) 2013-08-20 2015-02-26 Andritz Fiedler Gmbh Profilierter Siebstab und Siebvorrichtung aus profilierten Siebstäben
JP6460741B2 (ja) * 2014-08-06 2019-01-30 相川鉄工株式会社 製紙用ストレーナ及び製紙用異物分離装置
US10513825B2 (en) 2017-09-18 2019-12-24 Ahmed Ibrahim Paper manufacturing system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1937274A (en) * 1931-03-12 1933-11-28 Brown Co Screen plate
DE3327422A1 (de) * 1983-07-29 1985-02-07 J.M. Voith Gmbh, 7920 Heidenheim Sieb, insbesondere fuer die sortierung von auf der grundlage von altpapier hergestellten fasersuspensionen
US4846971A (en) * 1984-11-12 1989-07-11 E&M Lamort Sieves for scrubbers and their method of manufacture
US5011065A (en) * 1987-11-14 1991-04-30 J.M. Voith Gmbh Screen basket and method of manufacture
US5094360A (en) * 1989-08-23 1992-03-10 J. M. Voith Gmbh Screen basket
DE4214061A1 (de) * 1992-04-29 1993-11-04 Escher Wyss Gmbh Siebvorrichtung
US5394600A (en) * 1994-02-14 1995-03-07 Chen; Chao-Ho Method for making a screen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59004134D1 (de) * 1989-12-09 1994-02-17 Escher Wyss Gmbh Verfahren zur Herstellung eines Spaltsiebes.
JP3396246B2 (ja) * 1993-01-18 2003-04-14 株式会社ナガオカ 多層コンポジットスクリーン
US5387340A (en) * 1993-07-15 1995-02-07 Ackerman; Carl D. Wire filter element and method of manufacture

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1937274A (en) * 1931-03-12 1933-11-28 Brown Co Screen plate
DE3327422A1 (de) * 1983-07-29 1985-02-07 J.M. Voith Gmbh, 7920 Heidenheim Sieb, insbesondere fuer die sortierung von auf der grundlage von altpapier hergestellten fasersuspensionen
US4846971A (en) * 1984-11-12 1989-07-11 E&M Lamort Sieves for scrubbers and their method of manufacture
US5011065A (en) * 1987-11-14 1991-04-30 J.M. Voith Gmbh Screen basket and method of manufacture
US5094360A (en) * 1989-08-23 1992-03-10 J. M. Voith Gmbh Screen basket
DE4214061A1 (de) * 1992-04-29 1993-11-04 Escher Wyss Gmbh Siebvorrichtung
US5394600A (en) * 1994-02-14 1995-03-07 Chen; Chao-Ho Method for making a screen

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001061104A1 (fr) * 2000-02-19 2001-08-23 Hermann Finckh Maschinenfabrik Gmbh & Co. Tamis pour suspensions de fibres et son procede de production
US6789681B2 (en) 2000-02-19 2004-09-14 Voith Paper Patent Gmbh Screen for fiber suspensions and method for the manufacture thereof
EP1825933A3 (fr) * 2006-02-22 2011-03-09 Voith Patent GmbH Procédé de fabrication d'un dispositifl de criblage à rotation symmétrique, en particulier cylindrique
EP1825932A3 (fr) * 2006-02-22 2011-03-09 Voith Paper Patent GmbH Procédé de fabrication d'un dispositif de criblage à rotation symétrique, en particulier cylindrique
WO2008119548A3 (fr) * 2007-04-02 2009-01-15 Andritz Fiedler Gmbh Dispositif de filtration
US8292086B2 (en) 2007-04-02 2012-10-23 Andritz Fiedler Gmbh Strainer apparatus
CN101657269B (zh) * 2007-04-02 2014-04-23 安德里兹·菲德勒有限责任公司 过滤装置
EP2129477B1 (fr) 2007-04-02 2015-07-08 Andritz Fiedler Gmbh Dispositif de filtration
EP2663688A4 (fr) * 2011-01-13 2014-06-25 Georgia Pacific Consumer Prod Tamis optimisé pour retirer des matières collantes d'une fibre recyclable contaminée par des adhésifs

Also Published As

Publication number Publication date
CA2203325A1 (fr) 1997-11-24
CA2203325C (fr) 2003-06-10
ATE210756T1 (de) 2001-12-15
EP0808941B1 (fr) 2001-12-12
US6047834A (en) 2000-04-11

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