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EP3774054A1 - Rouleau de broyage et presse à rouleaux - Google Patents

Rouleau de broyage et presse à rouleaux

Info

Publication number
EP3774054A1
EP3774054A1 EP19716347.0A EP19716347A EP3774054A1 EP 3774054 A1 EP3774054 A1 EP 3774054A1 EP 19716347 A EP19716347 A EP 19716347A EP 3774054 A1 EP3774054 A1 EP 3774054A1
Authority
EP
European Patent Office
Prior art keywords
roller
grinding
roller body
side wall
grinding roller
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
EP19716347.0A
Other languages
German (de)
English (en)
Other versions
EP3774054B1 (fr
Inventor
Bernhard Peterwerth
Herbert Hoffmann
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.)
FLSmidth AS
Original Assignee
ThyssenKrupp AG
ThyssenKrupp Industrial Solutions 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 ThyssenKrupp AG, ThyssenKrupp Industrial Solutions AG filed Critical ThyssenKrupp AG
Publication of EP3774054A1 publication Critical patent/EP3774054A1/fr
Application granted granted Critical
Publication of EP3774054B1 publication Critical patent/EP3774054B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • B02C4/283—Lateral sealing shields
    • 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 relates to a grinding roller for a roller press and a roller press with two grinding rollers forming a nip.
  • the ground material is usually fed in via a feed shaft arranged above the roll gap.
  • side walls of the feed shaft can regularly protrude at the end faces of the grinding rollers into the high pressure zone in the nip in order to prevent leakage of the compacted rolling stock at the axial ends of the grinding rollers or of the roll gap.
  • These also act as side guides for the ground material to keep this within the nip.
  • a roller press arranged feed chute may also be provided to provide one of the grinding rollers at the two axial ends, each having a side wall which is fixedly connected to a cylindrical roller body of this grinding roller, screwed concretely , Is, and which projects beyond the outer surface of this roller body (see EP 2 653 230 A2 or EP 3 248 685 A2). As the compaction proceeds, the pressure that the regrind increases
  • the invention is based on the object with a roll press, as it is known from EP 2 653 230 A2 or EP 3 248 685 A2, as simple as possible
  • Embodiments of the grinding roller according to the invention and the roller press according to the invention are objects of the further claims and / or emerge from the following description of the invention.
  • a grinding roll is provided for a roll press, in particular for a high-pressure or high-bed roll press, which has a cylindrical roll body (the term cylindrical refers to the shape of the lateral surface) and at least one arranged on an end face of the roll body and rotationally fixed to the roll body connected, preferably circular (ring) -shaped side wall, which projects beyond the outer circumferential surface of the roller body (in particular fully) outside.
  • a cylindrical roll body the term cylindrical refers to the shape of the lateral surface
  • the roll body preferably circular (ring) -shaped side wall
  • connection between the roller body and the side wall is effected by means of at least one screw, wherein the side wall in the unconnected state, ie if the connection provided for the screw connection at least not yet with a defined desired torque has been tightened, in a first portion in which preferably no screw is arranged, abuts against the end wall of the roller body and in a second portion, in which preferably the screw is arranged, a gap between the side wall and the end wall of the roller body is formed.
  • this gap is in the connected state, ie when the screw provided for the connection is tightened with the defined desired tightening torque, as a result of an elastic deformation of the side wall at least partially (ie the gap width is reduced), preferably completely eliminated.
  • the invention also relates to a corresponding method for mounting a grinding roller according to the invention, in which the screw connections are tightened with the desired torque.
  • the subsequent formation of the connection by tightening the screw connection would primarily affect the contact pressure within the second section, which would require a particularly high tightening torque in order to ensure a sufficiently high contact pressure in the first section, which prevents the side wall (in this first section) from lifting off the end face of the roller body during operation and thus ensures a sufficient sealing effect or lateral guidance effect for the ground material. Since such a sealing effect is of importance, in particular in the area of the outer circumferential surface of the roller body, it can preferably be provided that the first section lies radially further outward than the second section.
  • a grinding roller according to the invention can also be provided that at least one further section is provided in which a gap between the side wall and the end wall of the roller body is formed even in the connected state.
  • This further section which can preferably also be annular or closed in a circumferential manner, can preferably be arranged between the first section and the second section or between the second section and the third section.
  • at least two such further sections can be provided, one of which is arranged between the first section and the second section and another between the second section and the third section.
  • the side wall of a grinding roller according to the invention may preferably be formed of a plurality of segments, ie of parts which each cover only a peripheral portion of the end face of the roll body, each segment is connected by at least one screw with the roll body and wherein the adjacent segments in addition are connected to each other such that by means of this compound (s) axial forces are transferable.
  • a segmentation advantageously allows an exchange of individual segments or even all segments and thus the entire side wall, without having to disassemble the entire grinding roller from the composite, in which it is integrated to form the roller press.
  • the segments can be lifted off in a simple manner from a roller shaft or roller shaft penetrating the grinding roller and thus both the roller body and the sidewall or walls. Through the axial forces transmitted connection between adjacent segments can be supported by the side wall a total of relatively high axial forces.
  • the connections of adjacent segments may be provided in the form of at least one spring-groove pairing integrated in adjacent contact surfaces of the segments.
  • a tongue and groove pairing in which in at least one of the contact surfaces a recess is introduced, in which a serving as a transmission element body (spring, in particular feather key) engages, wherein the spring as a projection of the respective other contact surface or as a separate component can be realized in a structurally very simple way, a transfer of very high (axial) forces.
  • a connection can also facilitate tool-free fixing and fastening of the adjoining segments with the aim of disassembling or exchanging the crosswind or at least one segment thereof.
  • the spring of the spring-groove pairing is formed of a material whose yield strength is smaller than the yield strength the material of at least that portion of the- or the segments in which the groove of the spring-groove pairing is formed.
  • a grinding roller according to the invention with a segmented, i. formed from a plurality of segments side wall may also be provided that the side wall is unsegmented and possibly even formed in one piece.
  • the side wall is unsegmented and possibly even formed in one piece.
  • the roller body to have a base body and at least one wearing body detachably connected thereto, wherein the wearing body connects the second portion to the side wall
  • a roller press according to the invention comprises at least two grinding rollers which form or delimit a roller gap, at least one of which is designed as a grinding roller according to the invention.
  • both of the grinding rolls are designed according to the invention, wherein a side wall is provided for each of the grinding rolls on one of the end faces of the associated roll body in accordance with the invention.
  • the end faces of the two grinding rollers connected to the side walls and thus also the two side walls are arranged at the two different (axial) ends of the roller press or the grinding rollers.
  • FIG. 1 shows a grinding roller according to the invention in a perspective view
  • Fig. 2 the grinding roller in a side view
  • Fig. 3 the grinding roller in a longitudinal section along that in FIG. 2 with
  • Section of the grinding roller in the connected state is a simplified representation of a roll press according to the invention in accordance with a first embodiment in a side view;
  • FIG. 8 the roll press according to FIG. 7 in a plan view
  • FIG. 9 shows a simplified representation of a roller press according to the invention according to a second embodiment in a plan view.
  • FIGS. 1 to 6 show an embodiment of a grinding roller 1 according to the invention, which is provided as part of a roller press 2 according to, for example, FIGS. 7 and 8.
  • This roller press 2 comprises two grinding rollers 1, 3, which are aligned such that their longitudinal axes 4 extend as parallel as possible to each other.
  • Characterized a rolling gap 5 is formed with a constant width between the grinding roller 1, which is located in the formed by the two longitudinal axes 4 level.
  • a first (1) of the grinding rollers 1, 3 is formed as shown in FIGS. 1 to 5 and comprises a hollow cylindrical roller body 5 and two side walls 7, one of which is connected to one of the axial ends located end walls of the roller body 6.
  • the second grinding roller 3 does not include such end walls 7, wherein the distance between the grinding rollers 1, 3 is selected such that a roller body 6 of the second grinding roller 3 is partially disposed within the space laterally bounded by the two side walls 7 of the first grinding roller 1.
  • ground material (not shown) is poured, for example, via a feed chute (not shown) into the inlet chute formed on the upper side between the grinding rollers 1, 3.
  • a feed chute (not shown) into the inlet chute formed on the upper side between the grinding rollers 1, 3.
  • the material to be ground is then gradually pulled into the nip 5 and thereby compacted and crushed.
  • the rolling gap 5 at the axial ends of the grinding rollers 1.3 overlapping side walls 7 of the first grinding roller 1 thereby prevent leakage of ground material from the longitudinal axial ends of the nip 5.
  • the bottom emerging, crushed millbase can in a below the roll gap 5 arranged container (not shown) or fall on a conveyor belt positioned there.
  • Each of the annular side walls 7 consists of a plurality of (circular ring) segments 8, each of which is connected via a plurality of screw 9 with the roller body 6.
  • the screw 9 each consist of a threaded bolt 10 which is screwed with an external thread in an associated internal thread, which is formed by a base body 11 of the roller body 6, and a nut 12, on the side facing away from the roller body 6 on the threaded bolt 10 screwed and rests against the adjacent side of the side wall 7 (see, in particular Fig. 5 and 6).
  • Each contact region which is formed between one of the side walls 7 and the adjacent end face of the roller body 6, is divided into a first section 13, a second section 14, a third section 15 and two further sections 16, 17, each having a circular ring shape ,
  • the side walls 7 in the respective first section 13 and the respective third section 15 already contact the associated end face of the roller body, while within the second section 14th
  • Another gap 18 is formed with a gap width of, for example, about 0.4 mm (see Fig. 5).
  • the individual segments 8 of the sidewalls 7 are interconnected such that these connections provide axial forces, i. Forces acting along the longitudinal or rotational axis 4 of the grinding roller 1 can transmit.
  • a spring-groove pairing in each separation region of adjacent segments 8 is provided in each case primarily.
  • a groove extending radially with respect to the longitudinal or rotational axis 4 of the grinding roller 6 is formed, wherein the grooves of adjacent contact surfaces overlap and thereby form a receiving space within which a (pass) ) Spring 19 is arranged (see Fig. 4). Axial forces between adjacent segments 8 of the side surfaces 7 can be transmitted via this spring 19.
  • the tongue-and-groove pairings do not hinder the lifting of a segment 8 in the radial direction, which consequently makes it possible to disassemble and possibly replace individual segments 8 or the side walls 7 as a whole. In particular, this makes it possible for the side walls 7 not to have to be withdrawn in the axial direction from a roll axis or Walzenwehe 20 of the grinding roller 1 for replacement.
  • a cover plate 21 which is screwed by means of two screw 22 with the two adjacent segments 8 (see, in particular Fig. 4).
  • the roller body 6 of the grinding roller 1 comprises, in addition to the main body 11, two annular wear bodies 23, which are each arranged at one of the two axial ends of the main body 11.
  • the wear bodies 23 each form the region of the respective end face of the roller body 6 arranged within the first section 13, the second section 14 and the further section 16, which is arranged therebetween.
  • the wear bodies 23 are each connected via the associated side wall 7 and the associated screw 9 with the main body 11 of the roller body 6 by the side wall 7, the respective wear body 23 in a correspondingly formed recess of the body 11 presses.
  • the threaded bolts 10 of the associated screw 9 protrude each case by one of a corresponding number of through holes of the wear body 23.
  • the wear body 23 consist for example of highly wear-resistant steel, while the main body of the roller body
  • the side walls may in particular have been made of sheet steel.
  • the main body 11 of the roller body 6 forms a plurality of open to the lateral surface Aufhahmeö Anlagenen 24, which serve to receive wear protection body, for example of a hard metal.
  • Fig. 9 shows an alternative embodiment of an inventive
  • each of the grinding rollers 1 according to the invention provided with a (single) side wall 7, the design and connection with the respective Walzenkörpem 6 corresponding to the side walls 7 of the grinding roller 1 shown in FIGS.
  • the individual side walls 7 In order to achieve a two-sided cover of the roll gap 5 by means of the side walls 7, the individual side walls

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Crushing And Grinding (AREA)
  • Paper (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Abstract

L'invention concerne un rouleau de broyage pour une presse à rouleaux qui présente un corps de rouleau cylindrique (6) et au moins une paroi latérale (7) disposée sur une face frontale du corps de rouleau (6), qui est reliée de manière non rotative au corps de rouleau (6) et dépasse de l'extérieur de la surface périphérique extérieure du corps de rouleau (6). En outre, la liaison entre le corps de rouleau (6) et la paroi latérale (7) s'effectue au moyen d'au moins un raccord vissé (9), la paroi latérale (7) s'appuyant dans une première section (13) contre la paroi frontale du corps de rouleau (6) dans un état non raccordé, c'est-à-dire lorsque le raccord vissé réservé à la liaison n'est pas encore resserré avec un couple nominal défini, et un espace (18) étant formé dans une seconde section (14) entre la paroi latérale et la paroi frontale du corps de rouleau. Cet espace (18) est en revanche éliminé au moins partiellement, de préférence complètement, à l'état raccordé, c'est-à-dire lorsque le vissage (9) réservé au raccordement a été serré au couple de serrage nominal défini, en raison de la déformation élastique de la paroi latérale (7). Grâce à cette conception du rouleau de broyage, des forces axiales relativement élevées agissant sur la paroi latérale (7) peuvent être compensées par un couple de serrage relativement faible pour le(s) raccord(s) à vis 9, ce qui a un effet positif sur la durée de vie de l'assemblage.
EP19716347.0A 2018-04-12 2019-04-03 Rouleau de broyage et presse à rouleaux Active EP3774054B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018108690.3A DE102018108690A1 (de) 2018-04-12 2018-04-12 Mahlwalze und Walzenpresse
PCT/EP2019/058390 WO2019197240A1 (fr) 2018-04-12 2019-04-03 Rouleau de broyage et presse à rouleaux

Publications (2)

Publication Number Publication Date
EP3774054A1 true EP3774054A1 (fr) 2021-02-17
EP3774054B1 EP3774054B1 (fr) 2024-04-17

Family

ID=66102065

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19716347.0A Active EP3774054B1 (fr) 2018-04-12 2019-04-03 Rouleau de broyage et presse à rouleaux

Country Status (8)

Country Link
EP (1) EP3774054B1 (fr)
AU (1) AU2019251695B2 (fr)
CL (1) CL2020002593A1 (fr)
DE (1) DE102018108690A1 (fr)
FI (1) FI3774054T3 (fr)
PE (1) PE20210091A1 (fr)
WO (1) WO2019197240A1 (fr)
ZA (1) ZA202006187B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114950637A (zh) * 2022-06-13 2022-08-30 成都利君实业股份有限公司 一种侧挡料辊轴

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020104526B4 (de) 2020-02-20 2024-03-28 Maschinenfabrik Köppern Gmbh & Co. Kg Hochdruck-Walzenpresse
CN112295659B (zh) * 2020-10-26 2022-04-29 辽宁五寰特种材料与智能装备产业技术研究院有限公司 一种高压辊磨机辊系结构
DE102021103573B4 (de) 2021-02-16 2024-06-13 Maschinenfabrik Köppern Gmbh & Co. Kg Hochdruck-Walzenpresse
US11612895B2 (en) * 2021-06-23 2023-03-28 Metso Outotec USA Inc. Grinding roll and a grinding assembly comprising the grinding roll
DE202021103408U1 (de) 2021-06-25 2022-04-04 Maschinenfabrik Köppern Gmbh & Co. Kg Hochdruck-Walzenpresse
CN114918001A (zh) * 2022-06-13 2022-08-19 成都利君实业股份有限公司 一种耐磨元件、耐磨辊轴及辊轴耐磨的辊压机
CN115532355B (zh) * 2022-10-25 2024-03-15 安徽农业大学 一种茶毫与茶沫的加工回收装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK176624B1 (da) * 2007-07-25 2008-12-01 Smidth As F L Valsepresse med fleksible ringskivesektioner
PE20142134A1 (es) * 2011-12-27 2015-01-04 Smidth As F L Soportes de insercion de proteccion de borde para rodillos de molido
AU2013203833C1 (en) * 2012-04-20 2015-09-24 Metso Usa Inc. Roller crusher having at least one roller comprising a flange
EP2756886B1 (fr) 2012-04-20 2017-06-07 Metso Minerals (Sweden) AB Broyeur à rouleaux comportant au moins un rouleau avec une bride
US8833687B2 (en) 2012-04-20 2014-09-16 Metso Minerals Industries, Inc. Crushing roll with edge protection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114950637A (zh) * 2022-06-13 2022-08-30 成都利君实业股份有限公司 一种侧挡料辊轴

Also Published As

Publication number Publication date
AU2019251695B2 (en) 2021-11-25
PE20210091A1 (es) 2021-01-11
CL2020002593A1 (es) 2021-01-22
ZA202006187B (en) 2025-08-27
WO2019197240A1 (fr) 2019-10-17
BR112020020752A2 (pt) 2021-01-19
EP3774054B1 (fr) 2024-04-17
FI3774054T3 (fi) 2024-05-20
DE102018108690A1 (de) 2019-10-17
AU2019251695A1 (en) 2020-11-26

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