EP0578239B1 - Cylindre à revêtement résistant à l'usure, à utiliser dans des broyeurs à deux cylindres, en particulier dans des broyeurs à cylindres à haute pression - Google Patents

Cylindre à revêtement résistant à l'usure, à utiliser dans des broyeurs à deux cylindres, en particulier dans des broyeurs à cylindres à haute pression Download PDF

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Publication number
EP0578239B1
EP0578239B1 EP93110916A EP93110916A EP0578239B1 EP 0578239 B1 EP0578239 B1 EP 0578239B1 EP 93110916 A EP93110916 A EP 93110916A EP 93110916 A EP93110916 A EP 93110916A EP 0578239 B1 EP0578239 B1 EP 0578239B1
Authority
EP
European Patent Office
Prior art keywords
wear
roller
resistant
recesses
embedded
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 - Lifetime
Application number
EP93110916A
Other languages
German (de)
English (en)
Other versions
EP0578239A3 (fr
EP0578239A2 (fr
Inventor
Günter Keller
Ludger Alsmann
Franz Göddecke
Heinz Caspelherr
Gustav Buchholz
Meinhard Frangenberg
Jakob Ansen
Thomas Keller
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.)
Deutz AG
Original Assignee
Kloeckner Humboldt Deutz 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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Publication of EP0578239A2 publication Critical patent/EP0578239A2/fr
Publication of EP0578239A3 publication Critical patent/EP0578239A3/xx
Application granted granted Critical
Publication of EP0578239B1 publication Critical patent/EP0578239B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/30—Shape or construction of rollers
    • B02C4/305—Wear resistant rollers

Definitions

  • the invention is directed to a wear-resistant roller of a two-roller machine for the pressure treatment of granular material, in particular for high-pressure roller presses for pressure reduction, with wear-resistant pin-shaped material pieces partially embedded in the region of the roller surface of the roller body, which are harder than the roller material surrounding them.
  • the spaces between the protruding pin-shaped pieces of material are filled with a further material, for example a ceramic mass or preferably during operation of the roller press with the comminution material fed to the grinding roller, so that in the latter case there is almost autogenous wear protection.
  • a further material for example a ceramic mass or preferably during operation of the roller press with the comminution material fed to the grinding roller, so that in the latter case there is almost autogenous wear protection.
  • the object of the invention is to further develop the roller known from DE-A-41 32 474 and thus to create a wear-resistant roller according to the preamble of claim 1, which also permits the action of high compression pressures without damaging the roller body.
  • the lower surfaces of the recesses in the roller body are curved - advantageously in the form of a spherical cap - and to adapt the inserted pieces of material to the geometric shape of the recesses, it is achieved that the high pressing pressure acting on the inserted material pieces during operation of the roller press is distributed homogeneously to the roll material of the roll body surrounding the material pieces.
  • this measure prevents the formation of edges, in particular lateral edges, and thus avoids the occurrence of high notch stresses which originate from these edges particularly when forces act laterally on the inserted piece of material.
  • the embedded material pieces are at least divided into two, namely that at least one insert made of another material is inserted below the pin-shaped material pieces embedded in corresponding recesses, which largely fills the deepest area of the recess and its contour on the lower surface the pin-shaped material pieces are adapted.
  • the inserts are made of a material which can be deformed under a compressive stress which corresponds at least to the operating pressure of the roller machine, as a result of which the insert can completely adapt to all unevenness and roughness of the recesses.
  • the insert thus acts like a buffer, which distributes the compressive stresses acting on the pin-shaped material pieces to the surrounding roller material and prevents local pressure peaks.
  • Particularly suitable materials for the inlays are, according to the invention, easily deformable non-ferrous metals or such materials which have the same or similar material properties as the roller material surrounding the inlay, so that, for example, no thermal stresses can occur as a result of different expansion coefficients when compressing hot bulk materials.
  • a fine-grained bulk material as an insert, if this should be necessary.
  • Fig. 1 shows a partial section of a grinding roller (1) with a recess with in its deepest area curved surfaces (4) which form a hemisphere in this embodiment.
  • a pin-shaped material piece (2) made of a wear-resistant material is fitted into this recess.
  • the material piece (2) has a geometric shape in its lower area, that of the recess in its deepest area corresponds, so in this embodiment is also hemispherical, so that the recess is completely filled.
  • the length of the pin-shaped piece of material is greater than the entire depth of the recess, so that in the stored state a part of the piece of material (2) protrudes above the surface of the grinding roller (5).
  • the embedded piece of material is made in several parts.
  • the upper part (2 ') corresponds to the pin-shaped material piece (2) of the exemplary embodiment of FIG. 1, which is shortened in length, and is therefore likewise made from a wear-resistant material.
  • the lower part of the pin-shaped piece of material (2) is replaced by an insert (3), which is made according to the invention from another deformable material, or consists of a bulk material and which is in turn shaped so that it covers the cavity between the Completely fills the piece of material (2 ') and the outwardly curved surfaces (4) of the recess and its upper contour (6) corresponds to the lower contour of the pin-shaped piece of material (2').
  • an insert (3) which is made according to the invention from another deformable material, or consists of a bulk material and which is in turn shaped so that it covers the cavity between the Completely fills the piece of material (2 ') and the outwardly curved surfaces (4) of the recess and its upper contour (6) corresponds to the lower contour of the pin-shaped piece of material (2').
  • the curvature of the surfaces (4) can go so far that the insert (3) takes on a spherical shape and the lower surface of the pin-shaped material piece (2 ') corresponds to a spherical cap.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Crushing And Grinding (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Paper (AREA)

Claims (10)

  1. Cylindre résistant à l'usure pour une machine à deux cylindres servant au traitement sous pression de produits en forme de grains, notamment pour des presses à cylindres à haute pression pour broyer, comportant, au niveau de la surface des corps des cylindres, des pièces en forme de tiges résistant à l'usure, partiellement intégrées dans des cavités correspondantes, ces pièces étant plus dures que la matière environnante des cylindres,
    caractérisé en ce que
    les cavités du corps (1) des cylindres qui reçoivent les pièces en forme de tiges (2 ou 2', 3), présentent dans leur zone la plus profonde, des surfaces (4) courbées vers l'extérieur et les contours inférieurs des pièces intégrées correspondent par leur forme géométrique à ceux des cavités dans leur zone la plus profonde.
  2. Cylindre résistant à l'usure, selon la revendication 1,
    caractérisé en ce que
    dans leur zone la plus profonde, les cavités ont au moins approximativement une forme de calotte sphérique.
  3. Cylindre résistant à l'usure, selon l'une des revendications 1 ou 2,
    caractérisé en ce que
    les intervalles existant entre les pièces insérées (2 ou 2', 3) et le corps de cylindre (1) sont remplis d'un liant.
  4. Cylindre résistant à l'usure selon les revendications 1, 2 ou 3,
    caractérisé en ce que
    les pièces intégrées sont au moins en deux parties, et les cavités du corps de cylindre (1), sous les pièces en forme de tiges (2'), insérées, comportent chaque fois au moins un insert (3) en une autre matière dont la forme géométrique correspond à la forme des cavités en leur point le plus profond.
  5. Cylindre résistant à l'usure selon la revendication 4,
    caractérisé en ce que
    les inserts (3) ont une forme allant d'une forme semisphérique jusqu'à une forme sphérique.
  6. Cylindre résistant à l'usure selon la revendication 4 ou 5,
    caractérisé en ce que
    les contours supérieurs (6) des inserts (3) correspondent aux contours inférieurs des pièces (2') en forme de tiges, intégrées.
  7. Cylindre résistant à l'usure selon une ou plusieurs des revendications 1 à 6,
    caractérisé en ce que
    les inserts (3) sont déformables par une pression correspondant au moins à la pression de fonctionnement d'une presse à deux cylindres.
  8. Cylindre résistant à l'usure selon la revendication 7,
    caractérisé en ce que
    les inserts (3) sont en une matière ayant les mêmes caractéristiques ou des caractéristiques analogues à celles de la matière environnante du cylindre.
  9. Cylindre résistant à l'usure selon la revendication 7,
    caractérisé en ce
    que les inserts (3) sont en un métal non ferreux facilement déformable.
  10. Cylindre résistant à l'usure selon la revendication 7,
    caractérisé en ce que
    les inserts (3) sont constitués par un produit en vrac à granulométrie fine.
EP93110916A 1992-07-09 1993-07-08 Cylindre à revêtement résistant à l'usure, à utiliser dans des broyeurs à deux cylindres, en particulier dans des broyeurs à cylindres à haute pression Expired - Lifetime EP0578239B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4222427 1992-07-09
DE4222427 1992-07-09
DE4321427 1993-06-28
DE4321427A DE4321427A1 (de) 1992-07-09 1993-06-28 Verschleißfeste Walze für die Verwendung in Zweiwalzenmaschinen, insbesondere in Hochdruck-Walzenpressen

Publications (3)

Publication Number Publication Date
EP0578239A2 EP0578239A2 (fr) 1994-01-12
EP0578239A3 EP0578239A3 (fr) 1994-04-27
EP0578239B1 true EP0578239B1 (fr) 1996-09-18

Family

ID=25916409

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93110916A Expired - Lifetime EP0578239B1 (fr) 1992-07-09 1993-07-08 Cylindre à revêtement résistant à l'usure, à utiliser dans des broyeurs à deux cylindres, en particulier dans des broyeurs à cylindres à haute pression

Country Status (4)

Country Link
EP (1) EP0578239B1 (fr)
AT (1) ATE142909T1 (fr)
DE (2) DE4321427A1 (fr)
DK (1) DK0578239T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006010042A1 (de) * 2006-03-04 2007-09-06 Khd Humboldt Wedag Gmbh Hartkörper für den autogenen Verschleißschutz von Walzenoberflächen
DE102012102199A1 (de) 2012-03-15 2013-09-19 Maschinenfabrik Köppern GmbH & Co KG Presswalze

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19515568A1 (de) * 1995-04-27 1996-10-31 Krupp Polysius Ag Mahlelement und Verfahren zu dessen Herstellung
US5967431A (en) * 1996-03-18 1999-10-19 Astec Industries, Inc. Rock crusher having crushing-enhancing inserts, method for its production, and method for its use
DE19618143A1 (de) * 1996-05-06 1997-11-13 Krupp Polysius Ag Mahlwalze sowie Betriebs- und Reparaturverfahren
DE19638237A1 (de) * 1996-09-19 1998-03-26 Deutz Ag Verschleißfeste Oberflächenpanzerung für die Walzen von Hochdruck-Walzenpressen zur Druckzerkleinerung körnigen Gutes
DE19707130A1 (de) * 1997-02-22 1998-08-27 Kloeckner Humboldt Wedag Verschleißfeste Oberflächenpanzerung für die Walzen von Walzenmühlen zur Druckzerkleinerung körnigen Gutes
DE102006028546A1 (de) * 2006-06-21 2007-12-27 Polysius Ag Verfahren zur Wiederaufarbeitung einer gebrauchten Mahlwalze
DE102007012102A1 (de) * 2007-03-13 2008-09-18 Polysius Ag Verfahren zur Wiederaufarbeitung einer gebrauchten Mahlwalze
DE102007018090A1 (de) * 2007-04-17 2008-10-23 Polysius Ag Mahlwalze sowie Verfahren zur Wiederaufarbeitung
DE102009039928B3 (de) * 2009-08-17 2011-03-03 Khd Humboldt Wedag Gmbh Rollenpressen-Rasterpanzerung mit ringförmigen Bolzen und Verfahren zur Erneuerung der Bewehrung dieser Rasterpanzerung
CN102397802B (zh) * 2011-11-18 2015-09-09 中信重工机械股份有限公司 一种新型挤压辊类辊面结构

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB239723A (en) * 1924-10-08 1925-09-17 George West Millar Improvements in and relating to crushing rollers
US2588900A (en) * 1949-11-01 1952-03-11 Jeffrey Mfg Co Crusher-roll covering element
DE4036040C2 (de) * 1990-02-22 2000-11-23 Deutz Ag Verschleißfeste Oberflächenpanzerung für die Walzen von Walzenmaschinen, insbesondere von Hochdruck-Walzenpressen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006010042A1 (de) * 2006-03-04 2007-09-06 Khd Humboldt Wedag Gmbh Hartkörper für den autogenen Verschleißschutz von Walzenoberflächen
DE102012102199A1 (de) 2012-03-15 2013-09-19 Maschinenfabrik Köppern GmbH & Co KG Presswalze
WO2013135540A1 (fr) 2012-03-15 2013-09-19 Maschinenfabrik Köppern Gmbh & Co. Kg Cylindre broyeur

Also Published As

Publication number Publication date
DK0578239T3 (da) 1996-10-07
EP0578239A3 (fr) 1994-04-27
DE59303829D1 (de) 1996-10-24
ATE142909T1 (de) 1996-10-15
EP0578239A2 (fr) 1994-01-12
DE4321427A1 (de) 1994-01-13

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