EP3088085B1 - Protection contre usure laterale pour les rouleaux d'une presse a balles - Google Patents

Protection contre usure laterale pour les rouleaux d'une presse a balles Download PDF

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Publication number
EP3088085B1
EP3088085B1 EP16167478.3A EP16167478A EP3088085B1 EP 3088085 B1 EP3088085 B1 EP 3088085B1 EP 16167478 A EP16167478 A EP 16167478A EP 3088085 B1 EP3088085 B1 EP 3088085B1
Authority
EP
European Patent Office
Prior art keywords
roller
base body
wear protection
previous
press according
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.)
Active
Application number
EP16167478.3A
Other languages
German (de)
English (en)
Other versions
EP3088085A1 (fr
Inventor
Meinhard Frangenberg
Jörg SCHNEPPER
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.)
Takraf GmbH
Original Assignee
MAN Takraf Fordertechnik 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
Application filed by MAN Takraf Fordertechnik GmbH filed Critical MAN Takraf Fordertechnik GmbH
Publication of EP3088085A1 publication Critical patent/EP3088085A1/fr
Application granted granted Critical
Publication of EP3088085B1 publication Critical patent/EP3088085B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B02C4/32—Adjusting, applying pressure to, or controlling the distance between, milling members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
    • B30B3/005—Roll constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2210/00—Codes relating to different types of disintegrating devices
    • B02C2210/02—Features for generally used wear parts on beaters, knives, rollers, anvils, linings and the like

Definitions

  • the invention relates to the side wear protection for rollers of a roller press and a roller of a roller press having this side wear protection.
  • Roller presses also called material bed roller mills
  • roller presses have two rollers of the same diameter, between which the material to be shredded is introduced and forms a material bed there.
  • the opposite rotation of the rollers and the high pressure on the material between the rollers result in compaction.
  • an end face armor in the area of the circumferential roller edge from a plurality of prefabricated hard bodies lined up in a circle.
  • the hard bodies are preferably hammer-head-shaped and fastened, in particular glued, in radial grooves.
  • the disadvantage of this end face armor is the risk of breakage of the hard bodies.
  • the attachment by gluing or soldering is not easily detachable and therefore repairing the roller is not possible, or only possible with great difficulty.
  • the large manufacturing tolerances in components made of hard metal lead to large adhesive gaps or to considerable problems during assembly if the hard bodies are oversized.
  • the large glue gaps are problematic, since no secure gluing is possible and the hard bodies can fall out of the roll surface during operation.
  • the object of the present invention is to propose a side wear protection for the roll of a roller press, which has a long service life and enables simple and quick interchangeability.
  • the roll according to the invention for a roll press with a side wear protection consists of several side wear protection elements which enclose the roll edge.
  • the side wear protection elements have a base body made of an elastic tough material. Furthermore, the base body has a threaded bolt on the side of the base body facing the roller axis.
  • the following is a definition of the sides of the base body or the side wear protection element.
  • the side of the base body from which the threaded bolt protrudes and which is directed towards the center of the roller i.e. the contact surface with the roller
  • the side opposite this side, which forms the outer surface of the roller is referred to as the cover side.
  • the side of the base body that forms the end face of the roll in the installed state is the end face and the side opposite the end face, which adjoins the grid armor of the roll, is the rear side.
  • the remaining sides that adjoin the adjacent side wear protection elements are referred to as ring sides.
  • the base body is cuboid.
  • ring sides the sides of the base body that adjoin other side wear protection elements
  • the grid armor of the roller can be designed in such a way that a form fit is formed with the adjacent side wear protection elements or the grid armor.
  • the base body is cylindrical with a round base.
  • This base area is preferably flattened on one side as a support for fastening the hard bodies.
  • the side of the base body (the rear side) facing the grid armor of the roller is outwardly, that is to say is convexly curved, particularly preferably semicircular.
  • the grid armor is designed to be correspondingly concave. In this way, the mechanical stability of the side wear protection can advantageously be increased.
  • hard bodies are attached to the top side and the front side of the base body.
  • the hard bodies are preferably made of hard metal or a high-strength iron alloy (IFW), for example FeCrMoVC.
  • IFW high-strength iron alloy
  • an L-shaped hard body is provided which covers the top and front sides of the base body.
  • a hard body has to be attached to the base body and the roll edge is fully protected.
  • the L-shaped hard body has a non-rotationally symmetrical basic shape, for example triangular, and the grid armor of the roller has contact surfaces for the hard body in this area.
  • a rotation lock for the base body and thus also the side wear protection element is advantageously ensured in a simple manner.
  • the base body is enclosed by the grid armor of the roller in such a way that the base body is axially fixed and can thus advantageously absorb transverse forces, in particular in the axial direction away from the roller.
  • the basic body can be designed round for this purpose and the receptacle in the grid armor surrounds the round basic body by more than 180 °.
  • the hard bodies are preferably soldered on. Alternatively, there is also the possibility of gluing them on or introducing them by casting. Press, screw and other mechanical connections are also possible. In addition, thermal or other coatings of the wear base are also conceivable.
  • the volume of the hard metal required can advantageously be reduced considerably by means of the invention, which is equivalent to a significant saving in costs. Problems of fitting when installing the hard bodies, as in the prior art, are not to be feared.
  • the side wear protection can also be removed without any problems by loosening the screw connection; the previously necessary, expensive heating of the adhesive connection can be dispensed with.
  • the holding function of the side wear protection elements is advantageously ensured by the base body made of elastic material, which considerably reduces the risk of breakage.
  • Another positive effect is that the lower use of hard metal in the edge area of the roll means that there is greater wear and tear in the bathtub towards the middle of the roll due to wear Wear that leads to a decreasing radius is reduced. This advantageously reduces the grinding volume required to remove the bathtub-shaped wear.
  • Dowel pins are preferably arranged between the side wear element and the roll edge.
  • the dowel pins absorb axial or tangential forces.
  • the side of the side wear protection element directed towards the roller axis has receptacles for the dowel pins or the dowel pins themselves.
  • two dowel pins are arranged in the area of the ring sides for each side wear protection element. Axial and also tangential forces acting on the side wear protection can advantageously be absorbed by the dowel pins.
  • the spring possibilities caused by the design advantageously compensate for tolerances between the contact surfaces.
  • the threaded bolt is stepped, that is, close to the base body, the threaded bolt has a force-absorbing area with a significantly larger diameter.
  • the thickened area of the threaded bolt that adjoins the base body is also known as the collar.
  • the collar When installed, the collar is surrounded by a receiving area of the roller edge, which advantageously absorbs the axial and tangential forces.
  • the collar of the threaded bolt and the receiving area of the collar preferably form a fit in the roll edge.
  • the gap dimensions of the side wear protection can advantageously be significantly reduced through the elastic suspension by means of threaded bolts.
  • Elastic, tough types of steel in particular heat-treatable, fine-grained structural steels or spring steels, are particularly preferred.
  • other high strength tough metals e.g. Duralumin can be used.
  • the support of the side wear protection element on the roll edge is preferably a linear support in the axial direction of the roll.
  • a statically determined support is achieved through the line recording and tilting of the side wear protection elements can advantageously be prevented.
  • the roller according to the invention for a roller press has at least one side wear protection element described above.
  • the threaded bolt of the side wear protection element is guided through the roller edge and screwed.
  • the screw connection of the threaded bolt particularly preferably has a prestressing force in the radial direction.
  • an intermediate element is preferably arranged between the side wear protection element and the roller edge.
  • the threaded bolt or a dowel pin is preferably passed through the intermediate element or this is otherwise fixed in the axial or tangential direction, so that slipping is prevented.
  • the height (i.e. the radius of the roller) of the side wear protection elements can be adjusted.
  • a wear adjustment can advantageously take place through the height adjustment and the regrinding of the side wear protection elements necessary according to the prior art for wear adjustment can be dispensed with.
  • the replacement of an individual side wear protection element is particularly advantageously made considerably easier, since its height can be adjusted via the intermediate elements and it is not necessary to grind the hard metal body for height adjustment. This advantage also comes to light when using new side wear elements, the height of which can be adjusted without grinding over the intermediate elements during installation.
  • FIG. 1 various views of a side wear protection element 1 according to the invention are shown.
  • This has a cuboid, elastic base body 11 which is made of elastically tough steel.
  • the base body has a 11 has a threaded bolt 13.
  • the side of the base body 11 from which the threaded bolt 13 protrudes is directed towards the center of the roller, that is to say the contact surface with the roller.
  • This side is referred to here as the base side.
  • the side opposite this side, which forms the outer surface of the roller, is referred to as the cover side.
  • the side of the base body 11 which forms the end face of the roll in the installed state is the end face and the side opposite the end face, which adjoins the grid armor of the roll, is the rear side.
  • the remaining sides that adjoin the adjacent side wear protection elements are referred to as ring sides.
  • Hard bodies 12 are soldered onto the top side and the front side of the base body 11.
  • the hard bodies 11 are made of hard metal or a high-strength iron alloy (IFW).
  • the base side has two semicircular recesses 15 in the area of the ring sides, which serve as receptacles for dowel pins 2.
  • the semicircles are arranged such that two adjacent side wear protection elements 1 form a circular recess into which a round dowel pin can be inserted.
  • the base side also has two circular line supports 14 which are aligned parallel to the ring sides. As a result, the line supports 14 are aligned with the two differently inclined planes.
  • the Figures 2 to 4 show side wear protection elements 1 installed in a roller 4.
  • the threaded bolt 13 is guided through the roller edge 41 and fastened with a screw nut 5.
  • the side wear protection element 1 adjoins the grid armor 42 of the roller 4.
  • the back of the side wear protection element 1 has a circular bulge in the area of the ring sides.
  • the side of the grid armor 42 adjacent to the side wear protection elements 1 has semicircular recesses which accommodate the circular bulges of the side wear protection elements 1.
  • the different hole shapes to accommodate the side wear elements are in the grid geometry of the grid armor.
  • an exchangeable intermediate element 3 is arranged, which is used to adjust the height (Installation of different thicknesses for height adjustment) the side wear protection elements are used.
  • the intermediate elements 3 enclose the dowel pins 2 and are also located in a recess in the roller edge 41 and are thus secured against falling out.
  • the clamping sleeves 2 sit in through bores and can thus be adapted to the different thicknesses of the intermediate elements 3 by knocking them in and out or, if necessary, replaced by new ones.
  • the Figures 5 and 6 show an alternative embodiment of the side wear protection according to the invention.
  • the axial and tangential forces are transmitted here via a collar 16 of the threaded bolt 13.
  • the base body 11 has a cylindrical structure and thus has simple geometries (helical shape) that can be easily produced.
  • the receptacle for the collar 44 is a cylindrical receptacle with a flat support surface at right angles to the screw axis
  • the hole in the roller edge 41 for receiving the threaded bolt 13 has a corresponding receptacle 44 for the collar 16.
  • the bulge on the back of the side wear protection element 1 in this embodiment is centered on the back.
  • the intermediate element 3 here encloses the threaded bolt 13 and is thus secured in position.
  • Figure 7 shows an alternative embodiment of a side wear protection element 1.
  • This has a one-piece hard body 12.
  • This is L-shaped and forms the top and face of the side wear protection element 1.
  • the elastic base body 11 is cylindrical with a circular base, the front side of the base body 11 being flattened and thus forms a support for fastening the hard body 12.
  • FIG 8 shows a roller 4 with side wear protection elements 1 accordingly Figure 7 .
  • the grid armor 42 of the roller 4 has arcuate receptacles 45 for the base body 11 of the side wear protection element 1 according to FIG Figure 7 .
  • This arcuate receptacle 45 encloses the base body 13 (of the side wear protection element 1 according to FIG Figure 7 ) by more than 180 ° and thus forms an axial fixation of the base body 13.
  • contact surfaces 46 for the hard body 12 are arranged, which form an anti-twist device for the hard body 12 due to their position.
  • the side wear protection elements 1 are guided with the threaded bolt 13 through the roller edge 41 and screwed with a screw nut 5 and intermediate elements 3 are provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Press Drives And Press Lines (AREA)
  • Actuator (AREA)

Claims (15)

  1. Rouleau (4) d'une presse à rouleaux présentant un élément de protection (1) contre l'usure latérale comportant un corps de base (11) constitué d'une matière élastique, lequel corps de base comporte un boulon fileté (13) faisant saillie à partir d'un côté du corps de base (11) tourné vers un axe de rouleau, le boulon fileté (13) de l'élément de protection (1) contre l'usure latérale étant guidé à travers un bord de rouleau (41) du rouleau (4).
  2. Rouleau (4) d'une presse à rouleaux selon la revendication 1, caractérisé en ce que le corps de base (11) de l'élément de protection (1) contre l'usure latérale est cuboïde ou cylindrique avec une surface de base ronde, de préférence aplatie d'un côté.
  3. Rouleau (4) d'une presse à rouleaux selon l'une des revendications précédentes, caractérisé
    en ce que le côté du corps de base (11) de l'élément de protection (1) contre l'usure latérale faisant face au blindage de grille (42) du rouleau présente au moins une courbure (43), de préférence une courbure concave, et autrement est cuboïde.
  4. Rouleau (4) d'une presse à rouleaux selon l'une des revendications précédentes, caractérisé
    en ce que des corps durs (12) sont fixés sur les côtés du corps de base (11) formant la surface extérieure et le côté frontal du rouleau à l'état monté.
  5. Rouleau (4) d'une presse à rouleaux selon la revendication 4, caractérisé en ce qu'un corps dur en forme de L est fixé, lequel s'étend de la surface extérieure jusqu'au côté frontal du rouleau (4), recouvrant ainsi le bord de rouleau.
  6. Rouleau (4) d'une presse à rouleaux selon la revendication 4 ou 5,
    caractérisé
    en ce que le ou les corps durs (12) sont constitués de métal dur ou d'un alliage de fer à haute résistance (IFW).
  7. Rouleau (4) d'une presse à rouleaux selon l'une des revendications 4 à 6, caractérisé
    en ce que les corps durs (12) sont soudés.
  8. Rouleau (4) d'une presse à rouleaux selon l'une des revendications précédentes, caractérisé
    en ce que des logements destinés à des goupilles de serrage (15) ou des goupilles de serrage (2) sont disposé(e)s sur le côté du corps de base (11) tourné vers le bord de rouleau (41).
  9. Rouleau (4) d'une presse à rouleaux selon l'une des revendications précédentes, caractérisé
    en ce que le boulon fileté (13) est étagé et présente un diamètre nettement plus grand à partir du corps de base (11).
  10. Rouleau (4) d'une presse à rouleaux selon l'une des revendications précédentes, caractérisé
    en ce que la matière élastique est un acier élastique résistant.
  11. Rouleau (4) d'une presse à rouleaux selon l'une des revendications précédentes, caractérisé
    en ce que l'appui des corps de base (11) sur le rouleau est un appui linéaire (14) dans la direction axiale du rouleau.
  12. Rouleau selon l'une des revendications précédentes, caractérisé en ce qu'un élément intermédiaire (3) échangeable en différentes épaisseurs est disposé entre l'élément de protection (1) contre l'usure latérale et le bord de rouleau (41).
  13. Rouleau selon l'une des revendications précédentes, caractérisé en ce que le boulon fileté (13) de l'élément de protection (1) contre l'usure latérale est guidé à travers un bord de rouleau (41) du rouleau (4) et y est vissé, le vissage étant précontraint.
  14. Rouleau selon l'une des revendications précédentes, caractérisé en ce que le corps de base (11) est maintenu axialement dans le blindage de grille et peut ainsi absorber des forces transversales.
  15. Presse à rouleaux présentant un rouleau selon l'une des revendications précédentes.
EP16167478.3A 2015-04-29 2016-04-28 Protection contre usure laterale pour les rouleaux d'une presse a balles Active EP3088085B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015207927.9A DE102015207927A1 (de) 2015-04-29 2015-04-29 Seitenverschleißschutz für die Rolle einer Rollenpresse

Publications (2)

Publication Number Publication Date
EP3088085A1 EP3088085A1 (fr) 2016-11-02
EP3088085B1 true EP3088085B1 (fr) 2020-11-25

Family

ID=55862599

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16167478.3A Active EP3088085B1 (fr) 2015-04-29 2016-04-28 Protection contre usure laterale pour les rouleaux d'une presse a balles

Country Status (9)

Country Link
US (1) US20160318025A1 (fr)
EP (1) EP3088085B1 (fr)
AU (1) AU2016202752B2 (fr)
CA (1) CA2928353C (fr)
CL (1) CL2016001039A1 (fr)
DE (1) DE102015207927A1 (fr)
EA (1) EA031311B1 (fr)
MX (1) MX2016005615A (fr)
PE (1) PE20161088A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104084259B (zh) * 2014-08-01 2017-02-22 张珂 一种辊子及其辊压装置
DE102016200912A1 (de) * 2016-01-22 2017-07-27 Thyssenkrupp Ag Verschleißschutzelement für eine Zerkleinerungseinrichtung
US11931745B2 (en) * 2021-06-23 2024-03-19 Metso Outotec USA Inc. Grinding roll

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4036040C2 (de) 1990-02-22 2000-11-23 Deutz Ag Verschleißfeste Oberflächenpanzerung für die Walzen von Walzenmaschinen, insbesondere von Hochdruck-Walzenpressen
DE4132474A1 (de) 1991-05-28 1992-12-03 Kloeckner Humboldt Deutz Ag Verschleissfeste mahlwalze fuer die verwendung in walzenmaschinen, insbesondere in hochdruckwalzenpressen
DE10335115A1 (de) * 2003-07-31 2005-02-24 Polysius Ag Mahlwalze
DE10354679A1 (de) 2003-11-22 2005-06-30 Khd Humboldt Wedag Ag Mahlwalze für die Druckzerkleinerung körnigen Gutes
DE102010024221A1 (de) 2010-06-18 2011-12-22 Khd Humboldt Wedag Gmbh Profilierte Bandage für eine Rollenpresse
WO2013066933A1 (fr) * 2011-10-31 2013-05-10 Flsmidth A/S Protection de bord pour presses à rouleaux
MX2014007983A (es) * 2011-12-27 2014-08-21 Smidth As F L Soportes de insercion de proteccion de borde para rodillos de molido.
DE102012102199A1 (de) * 2012-03-15 2013-09-19 Maschinenfabrik Köppern GmbH & Co KG Presswalze
US8833687B2 (en) * 2012-04-20 2014-09-16 Metso Minerals Industries, Inc. Crushing roll with edge protection
WO2014071173A2 (fr) * 2012-10-31 2014-05-08 Flsmidth A/S Protection de bord à fixation de réception filetée interne

Also Published As

Publication number Publication date
DE102015207927A1 (de) 2016-11-03
EA201600294A2 (ru) 2016-10-31
MX2016005615A (es) 2016-10-31
AU2016202752B2 (en) 2017-07-20
PE20161088A1 (es) 2016-10-22
CL2016001039A1 (es) 2017-02-17
EA201600294A8 (ru) 2018-11-30
EA201600294A3 (ru) 2016-11-30
CA2928353C (fr) 2018-05-01
US20160318025A1 (en) 2016-11-03
EP3088085A1 (fr) 2016-11-02
EA031311B1 (ru) 2018-12-28
AU2016202752A1 (en) 2016-11-17
CA2928353A1 (fr) 2016-10-29

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