EP2868380B1 - Dispositif destiné au traitement de matériaux de chargement pouvant s'écouler - Google Patents

Dispositif destiné au traitement de matériaux de chargement pouvant s'écouler Download PDF

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Publication number
EP2868380B1
EP2868380B1 EP14189139.0A EP14189139A EP2868380B1 EP 2868380 B1 EP2868380 B1 EP 2868380B1 EP 14189139 A EP14189139 A EP 14189139A EP 2868380 B1 EP2868380 B1 EP 2868380B1
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EP
European Patent Office
Prior art keywords
roll
segments
facing
section
longitudinal
Prior art date
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Active
Application number
EP14189139.0A
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German (de)
English (en)
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EP2868380A2 (fr
EP2868380A3 (fr
Inventor
Hartmut Pallmann
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.)
Pallmann Maschinenfabrik GmbH and Co KG
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Pallmann Maschinenfabrik GmbH and Co KG
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Publication of EP2868380A3 publication Critical patent/EP2868380A3/fr
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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
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/16—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using pocketed rollers, e.g. two co-operating pocketed rollers
    • B30B11/165—Roll constructions

Definitions

  • the invention relates to a device for processing pourable feed material according to the preamble of patent claim 1.
  • Such devices are to be assigned to the field of mechanical processing technology, wherein the pourable feed material for processing in the passage between two counter-rotating rollers is subjected to high pressure and shear forces.
  • the feedstock can be diverse in nature and ranges from materials such as plastics and rubber to chemicals, food and the like.
  • the effective during processing surfaces correspond to the lateral surfaces of the rollers, which are subjected to more or less severe wear depending on the nature of the feedstock. Over time, this causes the nip between the rolls of a pair of rolls to be heavier in more heavily loaded areas than in less stressed areas, with the result of a nonuniform gap across the axial length of the rolls.
  • Such a device is for example in the DE 43 08 342 C1 described. From the DE 10 2010 002 422 A1 in addition, a device is known in which a one-piece hollow cylindrical roll shell is thermally shrunk onto a roll main body. Although this procedure ensures a secure fit of the roll shell on the roll main body, but turns out to be costly and difficult when such a roll shell must be changed on site. There Such devices are often operated far from suitable infrastructure, there is a lack of suitable technical equipment and personnel to solve the roll shell after previous heat treatment from the roll body and replace it with another. In particular, an improperly performed heat treatment by insufficient trained personnel carries the risk that the roll shell is overheated and thereby important material properties such as hardness and wear resistance are impaired.
  • the roller body has a polygonal cross-section, with the same polygon sides.
  • This training leads to a number over the length of the roller body axially extending, the circumference of the roller body forming, planner bearing surfaces whose transverse to the circumferential direction extending width is constant and thus forms a receptacle for each shell segment.
  • the shell segments have a bearing surface in the form and size corresponding flat bottom, with which they are arranged and fixed on a bearing surface of the roller body.
  • the advantage of such a structural design is in addition to a better and more accurate manufacturability of the shell segments especially in an improved introduction of forces from the material processing in the roller, since the segments are supported at a conditional by the rotation of the rollers load on the bearing surface of the roller body can.
  • the attachment of the shell segments is carried out according to a preferred embodiment of the invention by means of transversely to the roll circumference extending into the roll main body fastening means such as clamping screws.
  • the fastening means are preferably arranged outside the effective lateral surface of the rollers only in the region of the opposing end-side roller ends. In this way, the effective lateral surface is not disturbed by recesses in the region of the screws, which is the prerequisite for the most uniform possible material processing.
  • the fastening means may also comprise clamping rings, which are made with a slight undersize to the roll circumference and concentric with Roll axle are pressed in each case onto the end of a roll and thereby clamp the shell segments radially on the roller body.
  • Another advantage of a segmented roller shell is the ability to provide in the contact joint between the roll body and roll shell interlocking means, which serve on the one hand for centering the segments on the roll base body, but at the same time accomplish the transfer of forces from the shell segments in the roll main body.
  • Such positive locking means consist for example of fitting holes, fitting bolts, fitting grooves, fitting strips and the like.
  • FIGS. 1 to 4 show the structural design of a device according to the invention. It can be seen a machine base frame 1, which is formed essentially by plane-parallel opposite transverse walls 2, which are connected to each other via laterally spaced upper longitudinal beams 3 and lower longitudinal beams 4. To form a housing, the longitudinal sides of the machine base frame 1 are covered with side panels 5 which adjoin the upper and lower longitudinal beams 3, 4. The side panels 5 are removable, so that the accessibility to the housing interior on each longitudinal side of the device between the upper longitudinal spar 3 and lower longitudinal spar 4 is given.
  • the machine base frame 1 serves to receive a rolling mill 6, which is formed in the present embodiment by a pair of rollers with axially parallel juxtaposed, counter-rotating rollers 7 and 8, whose axes of rotation are designated by the reference numerals 9 and 10.
  • a rolling mill 6 which is formed in the present embodiment by a pair of rollers with axially parallel juxtaposed, counter-rotating rollers 7 and 8, whose axes of rotation are designated by the reference numerals 9 and 10.
  • By maintaining a clear radial distance between the two rollers 7, 8 results in a processing zone forming nip.
  • For rotatably supporting the rollers 7, 8, these are guided with their stub shafts 11 through openings in the transverse walls 2, where they are held outside of the housing in bearings, which will be explained in more detail in detail.
  • the rollers 7, 8 each have a solid roller base body 12, which corresponds in cross-section to an equilateral hexagon, wherein each side of the hexagon forms a flat bearing surface 13 in the axial direction.
  • the effective for material processing lateral surface 14 of the rollers 7 and 8 is formed by a number of segments 15, which are mounted in an axially parallel position side by side on the roller body 12.
  • a segment 15 lies with its underside 16 on in each case one bearing surface 13 of the roller base body 12.
  • the top 17 of a segment 15 may be provided with a profiling.
  • In the circumferential direction form adjacent segments 15 with their axially extending Longitudinal edges butt joints 19, resulting in a over the circumference and length of a roller 7, 8 closed lateral surface 14 results.
  • rollers 7, 8 are subdivided into a central portion 20, which forms the effective lateral surface 14 and can be profiled, and two short end portions 21, which serve to secure the segments 15 to the roller ends.
  • a cross section in the region of the end portions 21 shows FIG. 3 , from which it is apparent that each segment 15 is stretched on the bearing surface 13 of the roller base body 12 only in the region of the end sections 21 by means of screws 22 arranged in pairs.
  • the screw heads are arranged countersunk in stepped holes in the segment 15.
  • An alternative embodiment consists of a clamping ring which is made with undersize relative to the circumference of the end portion 21 and is pressed axially onto the end portion 21.
  • the width of the clamping ring corresponds to a maximum of the axial length of the respective end portion 21.
  • the clamping ring may have a circumferential plate flange, which acts as a stop when pressing and limits the Aufpresstiefe.
  • the interlocking means consist of an axially extending fitting groove 23 in the bearing surface 13 and a matching groove 24 in the underside 16 of the segments 15.
  • a fitting strip 25 is inserted in a form-fitting manner on the one hand causes a centering of the segments 15 on the bearing surface 13 and on the other hand represents a force-transmitting toothing between segments 15 and roller body 12.
  • the area located upstream of the rolling mill 6 serves to feed the feedstock to the rolls 7 and 8.
  • This area is bounded by two vertical, transversely opposite longitudinal walls 26 which are each secured with their upper edge along an upper longitudinal spar 3 and with their bottom edge approximately at the top vertex of the rollers 7 and 8 end.
  • In the transverse direction of the area is bounded on both sides by also vertically extending end walls 27, which are fastened with its upper edge in each case at one of the upper longitudinal members 3 connecting and arranged on the inside of the transverse walls 2 transverse section 28.
  • the bottom edge 29 of the two end walls 27 follows in each case the contour of the peripheral portions of the two rollers 7 and 8 from the nip to the longitudinal walls 26, which results in two circular concave edge portions.
  • the relative position of the end walls 27 to the rollers 7 and 8 is such that the end walls 27 each lie in the solder plane between the central region 20 and the end portions 21 of the rollers 7, 8. This results in a relation to the transverse walls 2 inwardly staggered arrangement of the end walls 27 and thus a clear axial distance between the end walls 27 and the transverse walls 2, which remains free of feed material during material processing.
  • the feed material After passing through the nip, the feed material passes into the region of the product discharge 30 which is enclosed by the cladding 5 and transverse walls 2 and opens downwards, via which the processed product is withdrawn from the device.
  • the transverse walls 2 are each formed reinforced on its outer side.
  • the reinforcement comprises on each transverse wall 2 above all a horizontal upper flange 31 and a parallel thereto and arranged vertically spaced lower flange 32, between each of which a fixed bearing 33 for supporting the roller 7 and a displaceable in the direction of the fixed bearing 33 floating bearing 34 for supporting the Roller 8 is arranged.
  • the fixed bearing 33 is thus rigidly secured to the outside of the end walls 2, while the floating bearing 34 is supported via plain bearings 35 on the upper flange 31 and lower flange 32 and therefore can be moved in the direction of the fixed bearing 33.
  • Both fixed bearing 33 and floating bearing 34 are formed as rolling bearings in which the rollers 7, 8 are rotatably supported with their stub shafts 11. In each case one of the two stub shafts 11 of a roller 7, 8 is extended to receive a geared motor, not shown.
  • an adjusting device 36 is provided in the lateral region of each transverse wall 2.
  • the adjusting device 36 comprises a support frame with an upper and lower support rod 37, which are arranged in extension of the upper belt 31 and lower belt 32.
  • the straps 31, 32 facing away from the ends of the support rods 37 are fixed to each other via a yoke support 38 connected.
  • a cylinder piston unit 39 is arranged, which is supported centrally with its rigid part on the inside of the Jochtonss 38.
  • the movable piston 40 of the cylinder piston unit 39 connects to a transverse web 41, which in turn carries two parallel to the support rods 37 in the direction of the movable bearing 34 biased spring elements 42 which are supported on the floating bearing 34 and this against the fixed bearing 33rd to press.
  • the spring elements 42 embody a protective device for the case of foreign bodies in the feed material, which can not pass the nip due to their size. In this case, the spring elements 42 allow a conditional by the blocking effect of the foreign body lateral deflection of the Loswalze 8 against the biasing force, wherein the nip widens momentarily and the foreign body is eliminated from the crushing zone.
  • the adjusting device 43 comprises a projection 44 with first sliding surface 45 on the movable bearing 34 facing side of the fixed bearing 33.
  • the floating bearing 34 has a corresponding projection 46 with a second sliding surface 47.
  • First sliding surface 45 and second sliding surface 47 are inclined relative to each other.
  • the adjusting device 43 further comprises a wedge element 48 which is arranged displaceably between the first sliding surface 45 and the second sliding surface 47.
  • the wedge element 48 has a first wedge surface 49 running parallel to the first sliding surface 45 and cooperating therewith a second wedge surface 50 running parallel to the second sliding surface 47 and cooperating therewith.
  • first wedge surface 49 and the second wedge surface 50 threaded bore 51 in the wedge member 48 serves to receive the lower end of a threaded spindle 52, the opposite upper end is rotatably anchored in a pivot bearing 53 in the region of the upper belt 31.
  • the threaded spindle 52 By rotation of the threaded spindle 52, the wedge member 48 is moved relative to the first sliding surface 45 on the fixed bearing 33 and the second sliding surface 47 on the movable bearing 34, wherein due to the inclined wedge surfaces 49, 50, the distance between the bearing 33 and movable bearing 34 and thus the nip between the Fixed roller 7 and Loswalze 8 is changed.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Grinding (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Claims (8)

  1. Dispositif pour le traitement de matériaux d'alimentation en vrac, en particulier pour le broyage, le compactage et le briquetage de matériaux d'alimentation, avec un groupe de rouleaux (6) logé dans un châssis de machine (1) et comprenant au moins une paire de rouleaux (7, 8) disposés l'un à côté de l'autre parallèlement à leur axe et tournant en sens inverse l'un de l'autre tout en maintenant un écart radial entre eux et le traitement du matériau d'alimentation se faisant lors de son passage à travers l'écart entre les rouleaux, les rouleaux (7, 8) étant formés respectivement, d'un corps de rouleau (12) et d'une enveloppe de rouleau formant la circonférence du corps de rouleau et l'enveloppe de rouleaux étant composée en direction de la circonférence, de segments d'enveloppe (15) s'étendant sur la longueur axiale d'un rouleau (7, 8) parallèlement à l'axe, le corps de rouleau (12) ayant une section transversale polygonale à côtés de polygone identiques, chaque côté de la section transversale polygonale formant ainsi une surface portante (13) plane s'étendant parallèlement à l'axe du rouleau (9, 10) et les segments d'enveloppe (15) ayant respectivement une surface plane inférieure (16) correspondant au niveau de sa forme et de sa taille à la surface portante (13), la surface plane inférieure (16) servant à la fixation des segments d'enveloppe (15) sur la surface portante plane (13) du corps de rouleau (12) et des moyens d'engagement positif pour le centrage et le transfert de la contrainte de cisaillement agencés sur les surfaces de contact communes du corps de rouleaux (12) et du segment d'enveloppe (15) formant un engagement positif, caractérisé en ce que les moyens d'engagement positif consistent en des évidements (23, 24) se faisant face dans la surface de contact et dans lesquels est placé un élément d'engagement positif.
  2. Dispositif selon la revendication 1, caractérisé en ce que la section transversale du corps de rouleau (12) est pentagonale, hexagonale ou octogonale.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les segments d'enveloppe (15) sont subdivisés en direction axiale en une section médiane (20), formant la surface enveloppante efficace, et deux sections terminales (21) et en ce que les segments d'enveloppe (15) sont fixés au corps de rouleau (12) par des moyens de fixation (22), les moyens de fixation (22) n'étant agencés que dans les sections terminales (21) hors de la surface enveloppante (14) efficace.
  4. Dispositif selon la revendication 3, caractérisé en ce que les moyens de fixation (22) sont formés de vis de serrage et/ou d'anneaux de serrage.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que, dans la zone d'alimentation en amont du groupe de rouleaux (6) est formée de deux parois longitudinales (26) se faisant face et deux parois frontales (27) se faisant face, le bord inférieur de respectivement une paroi longitudinale (26) finissant dans la zone apicale de respectivement un rouleau (7, 8).
  6. Dispositif selon l'une des revendications 3 à 5, caractérisé en ce que, dans la zone d'alimentation en amont du groupe de rouleaux (6) est formée de deux parois longitudinales (26) se faisant face et deux parois frontales (27) se faisant face, le bord inférieur de respectivement une paroi frontale (27) finissant respectivement entre la section médiane (20) et la section terminale (27) de respectivement un rouleau (7, 8).
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que le groupe de rouleaux (6) est agencé dans un carter et accessible par une ouverture verrouillable dans au moins une des parois longitudinales parallèles à l'axe.
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce qu'un rouleau (7) du groupe de rouleaux (6) est logé dans un palier fixe (33) dans le châssis de machine (1) et que l'autre rouleau (8) est logé dans un palier libre (34) dans le châssis de machine (1) de façon à être déplaçable en direction du rouleau (7) et précontraint par rapport au palier fixe (33) à l'aide d'un dispositif de serrage (36).
EP14189139.0A 2013-10-16 2014-10-16 Dispositif destiné au traitement de matériaux de chargement pouvant s'écouler Active EP2868380B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013018431.2A DE102013018431B4 (de) 2013-10-16 2013-10-16 Vorrichtung zum Bearbeiten von schüttfähigem Aufgabegut

Publications (3)

Publication Number Publication Date
EP2868380A2 EP2868380A2 (fr) 2015-05-06
EP2868380A3 EP2868380A3 (fr) 2015-08-12
EP2868380B1 true EP2868380B1 (fr) 2018-04-04

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EP14189139.0A Active EP2868380B1 (fr) 2013-10-16 2014-10-16 Dispositif destiné au traitement de matériaux de chargement pouvant s'écouler

Country Status (3)

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EP (1) EP2868380B1 (fr)
DE (1) DE102013018431B4 (fr)
ES (1) ES2672206T3 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0897751A1 (fr) * 1997-08-20 1999-02-24 KHD Humboldt-Wedag AG Rouleau pour presse à haute pression, notamment pour le broyage en lit de matière de matériau granulaire

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2200194C3 (de) 1972-01-04 1978-10-26 Guenther 5628 Heiligenhaus Unger Vorrichtung zum Zerkleinern von klebrigem und ventilationsempfindlichem Material, insbesondere von zu analysierenden Kesselkohleproben, z.B. aus Steinkohle
DE3407534C2 (de) 1984-03-01 1987-01-02 Klöckner-Humboldt-Deutz AG, 5000 Köln Walzenmühle zur Druckzerkleinerung spröden Mahlgutes
DE3622053A1 (de) * 1985-07-01 1987-01-15 Kobe Steel Ltd Verdichtungsgeraet
DE3915320A1 (de) * 1989-05-10 1990-11-15 Krupp Polysius Ag Mahlwalze
DE4308342C1 (de) 1993-03-16 1994-10-13 Haendle Gmbh & Co Kg Walzwerk zur Vermahlung von keramischen Mahlgütern
DE19715210C2 (de) 1997-04-11 2001-02-22 Steinecker Maschf Anton Mahlspaltverstellung
DE19728267C2 (de) * 1997-07-02 1999-04-22 Schott Desag Ag Walzenbrecher zum Zerkleinern von anorganischen, hartem und/oder sprödem Material, insbesondere Glas
KR101084267B1 (ko) 2009-02-26 2011-11-16 삼성모바일디스플레이주식회사 유기 발광 표시 장치 및 그 제조 방법
DE102013109405A1 (de) * 2013-08-29 2015-03-05 Rwe Power Ag Verfahren zur Formung von Formkörpern aus einem granularen Material und entsprechende Walzenpresse

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0897751A1 (fr) * 1997-08-20 1999-02-24 KHD Humboldt-Wedag AG Rouleau pour presse à haute pression, notamment pour le broyage en lit de matière de matériau granulaire

Also Published As

Publication number Publication date
ES2672206T3 (es) 2018-06-13
DE102013018431A1 (de) 2015-04-16
DE102013018431B4 (de) 2024-05-08
EP2868380A2 (fr) 2015-05-06
EP2868380A3 (fr) 2015-08-12

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