[go: up one dir, main page]

EP0050709B1 - Panneau de tamis - Google Patents

Panneau de tamis Download PDF

Info

Publication number
EP0050709B1
EP0050709B1 EP81105234A EP81105234A EP0050709B1 EP 0050709 B1 EP0050709 B1 EP 0050709B1 EP 81105234 A EP81105234 A EP 81105234A EP 81105234 A EP81105234 A EP 81105234A EP 0050709 B1 EP0050709 B1 EP 0050709B1
Authority
EP
European Patent Office
Prior art keywords
strips
screen
screen plate
bands
cast
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.)
Expired
Application number
EP81105234A
Other languages
German (de)
English (en)
Other versions
EP0050709A1 (fr
Inventor
Edmund Pürkhard
Max Fuchs
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.)
Carl Schenck AG
Original Assignee
Carl Schenck AG
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
Application filed by Carl Schenck AG filed Critical Carl Schenck AG
Priority to AT81105234T priority Critical patent/ATE13020T1/de
Publication of EP0050709A1 publication Critical patent/EP0050709A1/fr
Application granted granted Critical
Publication of EP0050709B1 publication Critical patent/EP0050709B1/fr
Expired legal-status Critical Current

Links

Images

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
    • B07B1/469—Perforated sheet-like material

Definitions

  • the invention relates to a sieve plate made of steel or cast iron for hot and highly abrasive bulk materials, with a support made of heat-resistant armor material.
  • a sieve plate made of pre-perforated steel plates, on which a wear-resistant surface made of heat-resistant, wear-resistant materials is applied, is known from DE-B-2 318 646.
  • Such pre-punched steel plates involve a high manufacturing effort and are e.g. not suitable for sieves with smaller sieve openings.
  • the sieve openings are exposed to high wear on bulk materials that are subject to high wear.
  • a sieve plate which consists of rubber and has a metal support plate. Cast iron strips are embedded in the sieve plate or received in grooves in the sieve plate.
  • a sieve plate is for hot bulk goods, e.g. Hot sintering, unsuitable, since neither the rubber base material nor the strips made of cast iron can withstand the high temperatures that occur with such bulk materials.
  • Cast sieve plates are known in various embodiments. A number of differently composed and alloyed steels and cast iron in a suitable composition can be used as casting materials. The previously known cast sieve plates have the disadvantage that they wear out quickly when subjected to high loads, in particular when used for hot and extremely abrasive bulk materials.
  • the object of the present invention is to provide a sieve plate which is particularly well suited for hot and highly abrasive bulk materials and which is particularly wear-resistant. This object is achieved by the features specified in the patent claims. The claims also cover embodiments of the invention.
  • the arrangement of strips or strips made of a heat-resistant armor material running in the conveying direction increases the service life of a cast sieve plate and improves the sieving performance.
  • Coarse-grained and heavy material components lie on the wear-resistant strips and do not come into direct contact with the underlying screen surface.
  • the fine goods cause less wear than coarse goods. Therefore, in the proposed arrangement, the perforated surfaces are less stressed and the wear on these surfaces is reduced. Since coarse screenings do not touch the screen surface, this is better used for the screening process.
  • the arrangement of wear strips reduces the contact area of the hot material to be sieved with the sieve plate. As a result, the screen plate is heated up less, which also contributes to reducing wear.
  • the subclaims relate to expedient and advantageous embodiments of the invention, for example a cast base plate with material strips made of heat-resistant armor material, the arrangement of webs, the connection of the material strips and / or webs to the base plate, the execution of the screen perforation, the additional armoring of the screen plate and the arrangement of sieve plates with a sieve covering.
  • the sieve plates which are shown in sections in the figures and are cast from heat-resistant materials (special steel), consist of a base plate 1 with the sieve holes 2.
  • the sieve holes have the shape of elongated holes, which are arranged in rows as seen in the conveying direction.
  • the longitudinal direction of the screen holes forms an angle of approximately 45 ° with the conveying direction indicated by arrows (see FIGS. 3 and 4).
  • the sieve holes can also have a shape that differs from the illustrated exemplary embodiments and e.g. be round. As shown in the drawings, the sieve holes can be flared downwards.
  • the sieve holes are alternately offset by approximately 90 ° in their longitudinal direction. This type of perforation is advantageous for smaller sieve openings and results in good sieving performance.
  • Strips 3 made of heat-resistant armor material are arranged on the base plate 1 in the conveying direction.
  • the armor material is welded directly onto the base plate.
  • the base plate 1 has webs 4 and 5.
  • the cross-sections of the webs are approximately rectangular to square, the web flanks being able to be inclined or curved towards the center of the web.
  • the web 4 is part of the cast base plate itself.
  • the web is welded onto the base plate, as shown for web 5.
  • the webs are connected on their wide side to the base plate, but they can also be arranged in an upright position.
  • the material strips 3 are reinforced with material strips 3 made of a heat-resistant armor material.
  • the armor material can be welded onto the webs or connected to the webs in some other way.
  • the web flanks 7 and 8 can also be provided completely or partially with armor material. The webs run in the conveying direction of the material to be screened.
  • the screen holes 2 are located in the base plate 1 below the upper channel te of the sieve plate. They are therefore less stressed by the material to be treated, especially by large and heavy material components. At the same time, the sieving performance is improved.
  • the screen plate in the area of the screen holes can additionally be armored with armor material.
  • the height of the armor 6 can be equal to or less than the height of the armored strips or strips.
  • the shape of the armor can differ from the exemplary embodiment shown in FIG. 4. For example, individual beads made of armored material can be welded on the surface of the perforated screen in the longitudinal or transverse direction.
  • the screen plates are arranged in rows one behind the other (in the conveying direction) and next to one another (transversely to the conveying direction).
  • the transverse rows of the sieve plates can be installed offset to one another or manufactured in such a way that the strips alternate with the perforations in the conveying direction with armored strips or strips (checkerboard-like offset of the perforated strips or the armored strips).

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Electromechanical Clocks (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Dry Shavers And Clippers (AREA)

Claims (9)

1. Plaque de tamisage en acier ou en fonte pour matières en vrac chaudes et très abrasives, comportant un revêtement en matière de blindage réfractaire, caractérisée en ce que ladite plaque de tamisage est coulée, en ce que la matière de blindage réfractaire est placée sous la forme de bandes ou de barres (3) dirigées dans la direction de transport, sur la plaque de tamisage, et en ce que les perforations de tamisage (2) se trouvent à un niveau abaissé entre les bandes ou les barres (3).
2. Plaque de tamisage selon la revendication 1, caractérisée en ce qu'elle est constituée par une plaque de base coulée (1) sur laquelle sont placées des bandes de matières (3) constituées par un matériau de blindage réfractaire.
3. Plaque de tamisage selon la revendication 2, caractérisée en ce que la plaque de base (1) comporte des nervures (4, 5) sur lesquelles se trouvent les bandes de matière (3).
4. Plaque de tamisage selon la revendication 2 ou 3, caractérisée en ce que les bandes de matière (3) et/ou les nervures (5) sont soudées.
5. Plaque de tamisage selon la revendication 3, caractérisée en ce que les bords des nervures sont inclinés ou recourbés en direction du centre desdites nervures et sont munis en partie ou en totalité de bandes de matière (7, 8).
6. Plaque de tamisage selon la revendication 1, caractérisée en ce que les perforations de tamisage (2) sont constituées par des trous oblongs (2) disposés par rangées suivant un angle d'environ 45° par rapport à la direction de transport.
7. Plaque de tamisage selon la revendication 6, caractérisée en ce que des trous oblongs successifs (2) présentent des directions longitudinales disposées avec des décalages mutuels respectifs d'environ 90°.
8. Plaque de tamisage selon la revendication 1, caractérisée en ce que la plaque de base (1) comporte un blindage supplémentaire entre les bandes ou barres (3) dans les zones des perforations de tamisage (2), la hauteur du blindage (6) étant égale ou inférieure à la hauteur des bandes ou barres (3).
9. Panneau de criblage comportant des plaques de tamisage coulées selon la revendication 1, caractérisé en ce que des plaques de tamisage successives dans la direction de transport sont disposées avec décalage entre elles perpendicu- lairementà la direction de transport, de la largeur des perforations (2) ou des bandes ou barres (3).
EP81105234A 1980-10-29 1981-07-06 Panneau de tamis Expired EP0050709B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81105234T ATE13020T1 (de) 1980-10-29 1981-07-06 Siebplatte.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3040710 1980-10-29
DE19803040710 DE3040710A1 (de) 1980-10-29 1980-10-29 Gegossene siebplatte

Publications (2)

Publication Number Publication Date
EP0050709A1 EP0050709A1 (fr) 1982-05-05
EP0050709B1 true EP0050709B1 (fr) 1985-05-02

Family

ID=6115441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81105234A Expired EP0050709B1 (fr) 1980-10-29 1981-07-06 Panneau de tamis

Country Status (3)

Country Link
EP (1) EP0050709B1 (fr)
AT (1) ATE13020T1 (fr)
DE (2) DE3040710A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT383055B (de) * 1983-08-18 1987-05-11 Hutter & Schrantz Ag Siebboden fuer schwingsiebmaschinen
DE3703221A1 (de) * 1987-02-04 1988-08-18 Wahl Verschleiss Tech Verfahren zur herstellung verschleissbeanspruchter, eine vielzahl von sieboeffnungen enthaltender siebe
SE8802999L (sv) * 1988-08-26 1990-02-27 Panel International Ltd Filterelement
DE19719482C2 (de) * 1997-05-07 2000-05-11 Voith Sulzer Stoffaufbereitung Sieb für Faserstoffsuspensionen sowie Verfahren zu seiner Herstellung
EP2431128A1 (fr) 2010-09-17 2012-03-21 Inflotek B.V. Procédé de fabrication d'un insert de filtrage ou de criblage à forme stable

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE671593C (de) * 1937-09-15 1939-02-10 Bernhard Ungerland Transportsieb zum Sieben und Foerdern von Schuettgut
FR1191721A (fr) * 1957-02-20 1959-10-21 Rosenthal Isolatoren Gmbh Fond perforé de criblage, notamment pour machines à cribler et machines centrifuges, et son procédé de fabrication
DE1230292B (de) * 1966-03-11 1966-12-08 Haver & Boecker Siebboeden
DE2318646C2 (de) * 1973-04-13 1974-08-01 Verschleiss-Technik Dr.-Ing. Hans Wahl, 7304 Ruit Verfahren zur Herstellung von Sieben aus vorgelochten Grundblechen
DE2532379C3 (de) * 1975-07-19 1981-09-10 Gustav Schade Maschinenfabrik Gmbh & Co, 4600 Dortmund Siebblech
DE2532375C3 (de) * 1975-07-19 1981-11-12 Gustav Schade Maschinenfabrik Gmbh & Co, 4600 Dortmund Siebblech
AU501192B2 (en) * 1975-09-19 1979-06-14 Mason & Cox Proprietary Limited Improved screen plate

Also Published As

Publication number Publication date
DE3040710A1 (de) 1982-05-27
ATE13020T1 (de) 1985-05-15
EP0050709A1 (fr) 1982-05-05
DE3170271D1 (en) 1985-06-05

Similar Documents

Publication Publication Date Title
EP0811818B2 (fr) Plaque de grille et procédé pour sa fabrication
DE102014009702B3 (de) Kunststoffsiebbelag für eine Siebmaschine zum Klassieren von insbesondere feinkörnigem Schüttgut
EP0050709B1 (fr) Panneau de tamis
DE2600662A1 (de) Zusammengesetzte baueinheit
DE2637997B2 (de) Sieb
DE19707845C2 (de) Scheibe für ein Scheibensieb oder einen Scheibenseparator
DE2634934C3 (de) Plattenartiges Siebelement
DE4300303A1 (de) Spannsieb
DE3114573C2 (de) Siebfeld für Vibrationssiebe
EP0703010A1 (fr) Grille de tamis
DE4331107C2 (de) Überströmsieb
DE8028806U1 (de) Gegossene Siebplatte
DE19957987A1 (de) Rostplatte für feste und bewegliche Roste
DE10259336A1 (de) Geformte Dämmplatte aus Mineralwolle
AT509855B1 (de) Sieb
DE2339058A1 (de) Rost fuer eine muehle oder eine andere verarbeitungsanlage
DE1201257B (de) Siebmatte fuer Siebzentrifugen
DE102020206601A1 (de) Hitzeschild und ein mit einem derartigen hitzeschild abgeschirmtes bauelement
DE3003365C2 (de) Keramische Tragplatte
DE4344600A1 (de) Verschleißauskleidungsmatte
AT383055B (de) Siebboden fuer schwingsiebmaschinen
DE4333262C1 (de) Stegglied für Reifenketten
DE2140623C3 (de) Form zum Herstellen eines Siebbodens aus Kautschuk bzw. Kunststoff
DE102004018516B4 (de) Verschleißfestes Blech
DE277060C (fr)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE DE FR GB IT

RBV Designated contracting states (corrected)

Designated state(s): AT BE DE FR GB IT LU NL SE

RBV Designated contracting states (corrected)

Designated state(s): AT BE DE FR GB IT

17P Request for examination filed

Effective date: 19820805

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE DE FR GB IT

REF Corresponds to:

Ref document number: 13020

Country of ref document: AT

Date of ref document: 19850515

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3170271

Country of ref document: DE

Date of ref document: 19850605

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19860609

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19890706

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19890731

BERE Be: lapsed

Owner name: CARL SCHENCK A.G.

Effective date: 19890731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19900330

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19940620

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19950706

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19950706

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19960813

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980401