EP0396897B1 - Mahlwalze - Google Patents

Mahlwalze Download PDF

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Publication number
EP0396897B1
EP0396897B1 EP90106145A EP90106145A EP0396897B1 EP 0396897 B1 EP0396897 B1 EP 0396897B1 EP 90106145 A EP90106145 A EP 90106145A EP 90106145 A EP90106145 A EP 90106145A EP 0396897 B1 EP0396897 B1 EP 0396897B1
Authority
EP
European Patent Office
Prior art keywords
roller
sheet metal
metal strips
grinding roller
grinding
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
EP90106145A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0396897A3 (de
EP0396897A2 (de
Inventor
Gerhard Kästingschäfer
Bernhard Peterwerth
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Krupp Polysius 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 Krupp Polysius AG filed Critical Krupp Polysius AG
Publication of EP0396897A2 publication Critical patent/EP0396897A2/de
Publication of EP0396897A3 publication Critical patent/EP0396897A3/de
Application granted granted Critical
Publication of EP0396897B1 publication Critical patent/EP0396897B1/de
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 relates to a grinding roller, in particular for use in a material bed roller mill, in which brittle ground material is comminuted between two grinding rollers pressed against one another at high pressure, according to the preamble of claim 1.
  • a grinding roller of the required type is described for example in an older, post-published proposal for a roller mill (DE-A-38 33 614).
  • the main thing here is to clamp the individual jacket segments together with the aid of clamping plates which are provided on the end faces of the rolls and are clamped using clamping screws.
  • the wear of the segments that occurs when comminuting brittle regrind (for example cement clinker) and in particular the disturbing wear occurring in the area of the end faces of the segments and the repair work resulting therefrom are to be countered by the fact that the clamping plates completely cover the end faces of the segments cover and seal flush with the outer peripheral surface of the segments.
  • a grinding roller which, as can be seen from FIG. 3 there, is particularly suitable for use in vertical roller mills, spring roller mills or the like.
  • the roller jacket provided there as a wear ring is produced in a similar manner to the previously explained embodiment from a multiplicity of jacket segments which are clamped together on the roller base body with the aid of front-side clamping plates, the special feature is that the segments are held on the base body in a dovetail guide.
  • EP-A-271 336 proposes a grinding roller which is produced essentially in one piece with its roller jacket which forms the comminution surface, in that this jacket is composed of alternately adjacent and preferably twist-extending first and second strip parts of different wear resistance. Both the first strip parts with higher wear resistance and the second strip parts with lower wear resistance can be attached in place on the roller base body, for example by welding, cladding, plating or casting, so that a one-piece unit consisting of roller base body and solid ( in one piece) roller roll attached thereon.
  • the invention is based on the object of developing a grinding roller of the type required in the preamble of claim 1 in such a way that it maintains the interchangeability of its shell segments with a relatively simple construction for particularly good intake behavior of the ground material to be comminuted in a roller mill, in particular in a material bed roller mill, contributes.
  • a cylindrical base body is provided with a central circumferential dovetail projection, on which the hard metal plates provided with a corresponding dovetail recess are, as it were, pushed and strung together, a strip or a layer of the softer material then being provided as a separating strip or separating layer between these hard metal plates , furthermore, holes can be provided in this strip in order to pull wires or the like through there, and wherein retaining rings (with parts overlapping the strips) are screwed to the two ends for fastening the strips.
  • the roll shell according to this known embodiment thus consists, with respect to the formation of the actual grinding surface, of an extremely large number of individual hard metal strips stacked together and soft material strips placed or attached between them, which are made of any materials, such as soft metal, paint, enamel, wood , Paper, leather, fabric or the like, can exist.
  • the roll shell has yet another significant advantage in that the sheets cast into the segments prevent adjacent edges (profile edges) of the cast material from breaking out on the segments.
  • this grinding roller contains a roller base body 2 and a roller shell 3 which is arranged directly on the roller base body 2 and consists of individual - in the present example, six - annular segments 4 is composed. All six segments 4 are close to one another with the roller body 2 - preferably in the roller circumferential direction - Tense, as will be explained in more detail below. All segments 4 are formed uniformly and of equal size, so that they can be exchanged individually and with one another.
  • Each segment 4 is largely made of hard cast material, preferably hard cast (cast steel).
  • a suitable number of sheets 5 arranged with circumferential spacings are cast in, which are made of a material softer than the chilled cast iron, preferably of essentially non-hardenable steel (structural steel).
  • These sheets 5 run essentially transversely to the casing surface 3a and, viewed in cross-section according to FIG. 1, are oriented approximately radially to this casing surface 3a.
  • all of the sheets 5 are in the form of essentially transverse, i.e. H. essentially running in the direction of the roll longitudinal axis, sheet metal strips, which are basically in any length (viewed in the direction of the axial roll length) and in any, most appropriate forms, d. H. Unprofiled or profiled in the longitudinal direction can be formed.
  • the radial height h of these sheets or sheet strips 5 can generally be of any type. This radial height of the sheet metal strips 5 cast into the segments 4 will preferably correspond approximately to a predetermined outer wear layer thickness of the roll shell 3, as is indicated in FIG. 1 for two segments 4 by a dash-dotted line 6.
  • FIG. 2 shows a perspective illustration of how each or each segment 4 of the roll shell 3 is fastened on the roll base body 2 can be. Then a correspondingly large number of sufficiently large, axially extending grooves 7 are provided on the outer circumferential side of the roller base body 2, and correspondingly profiled clamping plate segments 8 are arranged on the two opposite end faces 2a, 2b of the roller base body in such a way that they each have the appropriate profile Grip over the inner circumferential sides 4a of the associated jacket segment 4.
  • Two clamping plate segments 8 acting on the two opposite end faces 2a, 2b of the roller base body 2 and of the respective segment 4 are then firmly clamped together with the aid of two axially extending clamping screws which are known per se and are therefore not illustrated in detail, so that they clamp the segments with the roller base body 2 tight.
  • each segment 4 is formed with two front-side, axially opposing fastening flanges 4b and 4c, which fit on the outer circumferential side 2c of the roller base body 2 and with the aid of screw bolts 9 (left) or by means of one-piece clamping rings 11 (right half) on this outer circumferential side 2c of the roller base body 2.
  • FIG. 3 Another embodiment of the attachment of the individual segments 4 on the outer circumferential side of the roller base body 2 is shown in FIG. 3.
  • each segment 4 is formed with two front-side, axially opposing fastening flanges 4b and 4c, which fit on the outer circumferential side 2c of the roller base body 2 and with the aid of screw bolts 9 (left) or by means of one-piece clamping rings 11 (right half) on this outer circumferential side 2c of the roller base body 2.
  • roller base body 2 is, as it were, sawtooth-shaped in cross-section on its outer circumferential side, the correspondingly profiled inner side 4d of the associated segment 4 being inserted in a suitable manner in each sawtooth-shaped recess 10.
  • the attachment of the segments 4 on the roller body 2 can be in one of the forms described (by means of clamping screws or fastening screws) or in any other suitable Way.
  • Profiling the outer circumferential side of the roller base body 2 and the matching profile of the inside of each segment 4 has the advantage that the roller shell firmly clamped on the roller base body is reliably and non-rotatably fixed on this roller base body.
  • the sheet metal strips 5 made of the softer material can be made very differently and can also be cast in the cast material of the segments 4. A number of possibilities for this can be seen in FIGS. 2 and 5-11.
  • the metal strips 5 are designed as straight, flat (flat) metal strips which extend parallel to the longitudinal axis 1 a of the roller over the entire axial length (working length) L of the roller shell 3.
  • the sheet metal strips 5a cast in segment 4 are straight and run parallel to the longitudinal axis of the roll.
  • the sheet metal strips 5a only extend over part of the axial length L of the roll shell, in such a way that in the peripheral sections of the segment 4 containing the sheet metal strips 5a, two such sheet metal strips 5a with an axial spacing from one another in a peripheral section Axial extension lie one behind the other, while in the peripheral sections immediately adjacent in the circumferential sections only one such sheet metal strip 5a is arranged approximately in the central longitudinal section of the roll shell or its segment 4.
  • the sheet metal strips 5a are thus approximately staggered or in a gap with one another in adjacent circumferential sections.
  • sheet metal strips 5a of the same type and of the same size as in the previous example (FIG. 5) are provided, but these sheet metal strips 5a are parallel to one another both in the circumferential direction and in the direction of the roll longitudinal axis in the adjacent circumferential sections of the segment 4 lie, and wherein in each corresponding circumferential section two such straight metal strips 5a are arranged one behind the other in axial extension.
  • a plurality of straight sheet metal strips 5b aligned in the axial extension and parallel to the longitudinal axis of the roll are provided in the adjacent circumferential sections of the segment 4, but of significantly shorter length than in the previous examples.
  • the sheet metal strips 5b which are cast into one another directly adjacent peripheral sections are staggered or arranged in a gap with one another and arranged such that the sheet metal strips 5c of a plurality of adjacent peripheral sections of the individual segments 4 form a relatively flat arrow shape.
  • Fig. 8 shows a further embodiment with straight, flat sheet metal strips 5c, the length of which corresponds only to a part of the axial length L of the segments 4 or the roll shell.
  • two such sheet metal strips 5c are in turn arranged approximately in the direction of the roll longitudinal axis.
  • FIG. 9 also shows an arrangement of two sheet metal strips 5d in principle in the same way as in FIG. 8, in this case.
  • the sheet metal strips 5d cast into the individual segments 4 are each designed such that they have a lengthwise direction have a corrugated shape, with otherwise approximately the same flat arrow shape arrangement as was explained previously with reference to FIG. 8.
  • Fig. 10 further illustrates an embodiment in which the sheet metal strips 5e of each jacket segment 4 also have a corrugated shape in their longitudinal direction, but only a single such corrugated sheet metal strip 5e is arranged in each corresponding peripheral section of the segment 4, which is substantially in the direction of the Roll longitudinal axis 1a extends and extends over most of the axial length of the roll shell or from its segment 4.
  • FIG. 11 shows another example, according to which the sheet metal strips 5f in turn extend over approximately the largest part of the axial length L of the roll shell 3 and are arranged in the circumferential direction at substantially equal distances from one another.
  • the special feature of this design is the fact that all sheet metal strips are of the same design 5f - as shown in FIG. 11 - have a flat bend, preferably a symmetrical, approximately arrow-like flat angle shape.
  • Each sheet metal strip 5f thus encloses a relatively obtuse angle ⁇ (similarly to the sheet strips 5c in FIG. 8 and 5d, respectively, which are axially one behind the other as in FIG. 9).
  • the vertices 5f - of each obtuse angle thus formed lie approximately on the axial longitudinal center of the roll shell 3 and, depending on the application, can point in the direction of rotation or opposite to the direction of rotation of the associated roll.
  • the grinding roller designed according to the invention is particularly well suited for use in a material bed roller mill of the type indicated at the outset, so that the brittle ground material to be comminuted can be drawn in particularly well and uniformly by the two grinding rollers arranged in the material bed roller mill.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP90106145A 1989-05-10 1990-03-30 Mahlwalze Expired - Lifetime EP0396897B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3915320 1989-05-10
DE3915320A DE3915320A1 (de) 1989-05-10 1989-05-10 Mahlwalze

Publications (3)

Publication Number Publication Date
EP0396897A2 EP0396897A2 (de) 1990-11-14
EP0396897A3 EP0396897A3 (de) 1991-03-20
EP0396897B1 true EP0396897B1 (de) 1993-06-02

Family

ID=6380422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106145A Expired - Lifetime EP0396897B1 (de) 1989-05-10 1990-03-30 Mahlwalze

Country Status (7)

Country Link
US (1) US5000392A (da)
EP (1) EP0396897B1 (da)
BR (1) BR9002136A (da)
DE (2) DE3915320A1 (da)
DK (1) DK0396897T3 (da)
ES (1) ES2041071T3 (da)
ZA (1) ZA902625B (da)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5253816A (en) * 1989-07-20 1993-10-19 Krupp Polysius Ag Material crushing roller construction
DE4038798A1 (de) * 1990-12-05 1992-06-11 Krupp Polysius Ag Walzenmuehle
DE4132474A1 (de) * 1991-05-28 1992-12-03 Kloeckner Humboldt Deutz Ag Verschleissfeste mahlwalze fuer die verwendung in walzenmaschinen, insbesondere in hochdruckwalzenpressen
DE4210395A1 (de) * 1992-03-30 1993-10-07 Krupp Polysius Ag Walzenmühle
DE4312207A1 (de) * 1993-04-14 1994-10-20 Kloeckner Humboldt Deutz Ag Mahlwalze für Walzenmaschinen
DE4400090C1 (de) * 1994-01-04 1995-04-20 Loesche Gmbh Mahlwalze
DE19515568A1 (de) * 1995-04-27 1996-10-31 Krupp Polysius Ag Mahlelement und Verfahren zu dessen Herstellung
DE10354679A1 (de) * 2003-11-22 2005-06-30 Khd Humboldt Wedag Ag Mahlwalze für die Druckzerkleinerung körnigen Gutes
EP1570905A1 (fr) * 2004-03-03 2005-09-07 Magotteaux International S.A. Galets de broyage pour broyeur vertical
WO2012115794A1 (en) * 2011-02-23 2012-08-30 Flsmidth A/S Crushing roller
CN102211111B (zh) * 2011-03-17 2012-08-29 攀枝花市立宇矿业有限公司 复合轧碾辊
CN102773129A (zh) * 2011-05-10 2012-11-14 北京能为科技发展有限公司 耐磨分体辊套
TW201330979A (zh) * 2011-10-28 2013-08-01 Smidth As F L 耐磨滾輪
US8833687B2 (en) * 2012-04-20 2014-09-16 Metso Minerals Industries, Inc. Crushing roll with edge protection
DE102013103880B3 (de) * 2013-04-17 2014-08-07 Maschinenfabrik Köppern GmbH & Co KG Presswalze
DE102013103884B3 (de) * 2013-04-17 2014-08-07 Maschinenfabrik Köppern GmbH & Co KG Presswalze
DE102013018431B4 (de) * 2013-10-16 2024-05-08 Pallmann Maschinenfabrik Gmbh & Co. Kg Vorrichtung zum Bearbeiten von schüttfähigem Aufgabegut
DE102013017134A1 (de) * 2013-10-16 2015-04-30 Pallmann Maschinenfabrik Gmbh & Co. Kg Vorrichtung zum Bearbeiten von schüttfähigem Aufgabegut
TR201814882T4 (tr) * 2013-12-20 2018-10-22 Khd Humboldt Wedag Gmbh Bir silindir merdanesinde girintilerin işlenmesine yönelik yöntem.
WO2015123770A1 (en) * 2014-02-19 2015-08-27 Cast Steel Products Lp, By Its General Partner Cast Steel Products Gp Ltd. Segmented roller and method of reconditioning same
AU2016253584B2 (en) * 2015-11-02 2018-11-29 Infrabuild Wire Pty Limited Apparatus for Mounting to a Post
US10807098B1 (en) 2017-07-26 2020-10-20 Pearson Incorporated Systems and methods for step grinding
CN108772136A (zh) * 2018-07-06 2018-11-09 郑州机械研究所有限公司 一种耐磨层可拆卸的耐磨辊
CN110154277B (zh) * 2019-07-08 2020-06-19 霍昀 一种废旧轮胎破碎刀辊及其多功能破碎机
US10757860B1 (en) 2019-10-31 2020-09-01 Hemp Processing Solutions, LLC Stripper apparatus crop harvesting system
US10933424B1 (en) * 2019-12-11 2021-03-02 Pearson Incorporated Grinding roll improvements
WO2022188031A1 (zh) * 2021-03-09 2022-09-15 霍昀 一种用于回收废旧轮胎的磨削辊及其多功能破碎机
DE102021114404B4 (de) 2021-06-03 2024-07-04 Takraf Gmbh Segmentwalze, insbesondere zur Zerkleinerung oder Kompaktierung von Schüttgut

Family Cites Families (14)

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Publication number Priority date Publication date Assignee Title
US2057307A (en) * 1936-10-13 Machine for grinding material
DE610723C (de) * 1932-10-21 1935-03-15 Julius Schaeuble Walzenbrecher
GB439895A (en) * 1935-06-17 1935-12-17 John Mcintyre Machines for grinding material such as chocolate, paint and such like
DE1300425C2 (de) * 1965-04-26 1974-10-17 Intercontinentale-Technik Gesellschaft f. Planung u. Konstruktion mbH, 8000 München Auskleidung und belag hoher verschleissfestigkeit fuer muehlen u. dgl
SE308853B (da) * 1965-08-02 1969-02-24 Skelleftea Gummifabriks Ab
US3390839A (en) * 1965-11-12 1968-07-02 Bolton Emerson Grooved refiner plug and method for filling same
DE2055147C3 (de) * 1970-11-10 1975-12-04 Maschinenfabrik Koeppern & Co Kg, 4320 Hattingen Walzenpresse
US3742852A (en) * 1971-10-01 1973-07-03 Dayco Corp Magnetic printing cylinder
US3804346A (en) * 1972-09-11 1974-04-16 T Norman Liner for grinding mills
US3989441A (en) * 1973-10-26 1976-11-02 United States Steel Corporation Expansion shim for hot briquette roll segments
DE7934607U1 (de) * 1979-12-08 1980-11-20 Krupp Polysius Ag, 4720 Beckum Mahlrolle
US4542566A (en) * 1982-11-15 1985-09-24 Corrugating Roll Corporation Corrugating roller
JPS63143949A (ja) * 1986-12-09 1988-06-16 アイエヌジ商事株式会社 粉砕機に使用される破砕面部材
DE3702251A1 (de) * 1987-01-27 1988-08-11 Teewen Bv Rolle

Also Published As

Publication number Publication date
BR9002136A (pt) 1991-08-13
EP0396897A3 (de) 1991-03-20
DE3915320A1 (de) 1990-11-15
ES2041071T3 (es) 1993-11-01
ZA902625B (en) 1990-12-28
EP0396897A2 (de) 1990-11-14
DK0396897T3 (da) 1993-08-09
US5000392A (en) 1991-03-19
DE59001599D1 (de) 1993-07-08

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