EP2498911A2 - Mahlwalze einer walzenmühle - Google Patents
Mahlwalze einer walzenmühleInfo
- Publication number
- EP2498911A2 EP2498911A2 EP11790945A EP11790945A EP2498911A2 EP 2498911 A2 EP2498911 A2 EP 2498911A2 EP 11790945 A EP11790945 A EP 11790945A EP 11790945 A EP11790945 A EP 11790945A EP 2498911 A2 EP2498911 A2 EP 2498911A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- grinding
- grinding roller
- mill
- wear
- 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
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
- 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
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
Definitions
- the invention relates to a grinding roller of a roller mill with a roller shaft, a roller body and an outer wear protection wear ring.
- the invention relates to a roller mill for crushing the brittle material to be ground with two counter-rotating grinding rollers.
- a roller for processing iron or steel into thin plates or strips according to the preamble of claim 1 is known. It consists of a roll shaft with shrunk roll body, wherein the roll body has a heat treated hardened surface.
- DE 28 43 173 C2 provides as a wear-resistant surface armor for rolls of rolling machines on several welded to a roll body metallic layers of different materials or hardnesses.
- the invention is therefore based on the object, the operating costs of a
- the grinding roller according to the invention of a roller mill consists essentially of a roller shaft, a roller base body and an outer, a wear protection wear ring, wherein the connection between the roller shaft and roller body is formed by shrink fit.
- Roller base body is formed by at least two coaxially arranged intermediate rings.
- the roller body By dividing the roller body into at least two coaxially arranged intermediate rings, it is sufficient if after repeated processing only the outermost intermediate ring is replaced, while previously the entire roller body was replaced. Due to this design, the operating costs of a roller mill can be reduced by up to 10% depending on the number of intermediate rings.
- the roll main body or the intermediate rings are cast steel or forgings whose radial strength is limited by manufacturing technology.
- the grinding roller according to the invention has the further advantage that the overall diameter of the roller body can be significantly increased by a correspondingly increased number of intermediate rings.
- grinding rolls having large diameters of at least 3 m, preferably at least 3.5 m and more, can be easily produced.
- connections between the intermediate rings and between the outer intermediate ring and the wear ring are preferably also formed by shrink fit, with either a conical or a cylindrical shrink fit can be used.
- the cylindrical shrink fit will be chosen especially in later connections no longer to be solved, while the conical shrink fit can be solved easily.
- a conical shrink fit is particularly advantageous for the connection of the outermost intermediate ring with the wear ring and with the next inner intermediate ring.
- the grinding roller may have a diameter of at least 4.5 m and a width of at least 2.5 m.
- the wear protection can also be formed by protruding from the surface of the wear ring profile bodies and / or hard surfacing.
- the grinding rolls described above are used in a roll mill for the comminution of brittle material to be ground, in which two counter-rotating grinding rolls are provided.
- This can happen in particular to act a high-pressure roller mill, in which a standing with at least one grinding roller in operative connection Kraftbeaufschlagungssystem to produce a grinding pressure of at least 50 MPa is provided.
- Fig. 2 is a schematic sectional view of a grinding roller according to a first embodiment
- Fig. 3 is a schematic sectional view of a grinding roller according to a second embodiment.
- the roller mill shown in FIG. 1 for comminuting brittle grinding stock essentially has grinding rollers 1, 2, whose roller shafts 3, 4 are mounted in bearings 5, 6 and 7, 8.
- the bearings 5 to 8 are preferably
- roller mill is preferably a high-pressure roller press
- other mills are also conceivable within the scope of the invention, such as, for example, a vertical roller mill, in which the grinding rollers described in more detail below could also be used.
- both grinding rollers 1, 2 are constructed identically, two embodiments will be described in more detail below with reference to FIGS. 2 and 3 only with reference to the grinding roller 1.
- the roller roller 1 is in the illustrated embodiment of the roller shaft 3, a roller body 13 and an outer wear wear a wear ring 14.
- the roller body 13 is formed in the illustrated embodiment by 3 coaxially arranged intermediate rings 13a, 13b and 13c, wherein the intermediate rings 13a to 13c of the roller body can be made of different material. So it is conceivable that only the outer intermediate ring 13c from the usual, relatively expensive bearing steel, e.g. 18NiCrMol4-6 is made, while for the other intermediate rings 13a and 13b a sufficiently strong structural steel, for example S355J2G3 is used. This possibility is the
- the grinding roller according to the invention can initially be processed several times only by processing the wear ring. Once the wear ring allows no further treatment and the roll body is attacked, only the outermost intermediate ring must be replaced 13c and 13'c of the roll body. The remaining roll body can therefore remain in use. Of course, it is also possible to convert a large grinding roller instead of removing the worn outer intermediate ring in a correspondingly smaller grinding roller. The operating costs of a grinding roller can be significantly reduced in this way.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010061309A DE102010061309B3 (de) | 2010-12-17 | 2010-12-17 | Mahlwalze einer Walzenmühle |
PCT/EP2011/071156 WO2012079965A2 (de) | 2010-12-17 | 2011-11-28 | Mahlwalze einer walzenmühle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2498911A2 true EP2498911A2 (de) | 2012-09-19 |
EP2498911B1 EP2498911B1 (de) | 2013-08-28 |
Family
ID=45093738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11790945.7A Not-in-force EP2498911B1 (de) | 2010-12-17 | 2011-11-28 | Mahlwalze einer walzenmühle |
Country Status (11)
Country | Link |
---|---|
US (1) | US9272284B2 (de) |
EP (1) | EP2498911B1 (de) |
AU (1) | AU2011344551B2 (de) |
BR (1) | BR112013013401A8 (de) |
CA (1) | CA2818801C (de) |
CL (1) | CL2013001688A1 (de) |
DE (1) | DE102010061309B3 (de) |
DK (1) | DK2498911T3 (de) |
MX (1) | MX2013006890A (de) |
PE (1) | PE20131507A1 (de) |
WO (1) | WO2012079965A2 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2691203T3 (es) * | 2013-12-20 | 2018-11-26 | Khd Humboldt Wedag Gmbh | Procedimiento para mecanizar cavidades en un rodillo |
DE102015222020A1 (de) | 2015-11-09 | 2017-05-11 | Thyssenkrupp Ag | Werkzeug zur Bearbeitung von abrasiven Materialien |
DE102019200190A1 (de) * | 2019-01-09 | 2020-07-09 | Thyssenkrupp Ag | Mahlwalze mit Randelementen |
CN110639218A (zh) * | 2019-09-10 | 2020-01-03 | 上海上诺精细化学有限公司 | 聚合高分子降失水剂干燥及堆积密度提高的方法及装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1885241A (en) * | 1930-10-24 | 1932-11-01 | Charles B Duckworth | Crushing roll |
US1938995A (en) * | 1931-08-17 | 1933-12-12 | Ross E Beynon | Built-up roll |
US2588900A (en) * | 1949-11-01 | 1952-03-11 | Jeffrey Mfg Co | Crusher-roll covering element |
SE408326B (sv) | 1977-10-07 | 1979-06-05 | Asbrink Eiker Ab | Regleranordning for hydraulanleggning |
US4546527A (en) * | 1981-12-01 | 1985-10-15 | Kubota Ltd. | Composite sleeve for use in rolling rolls for H-section steel and channel steel |
DE3843173A1 (de) * | 1988-12-22 | 1990-07-05 | Kloeckner Humboldt Deutz Ag | Verschleissfeste oberflaechenpanzerung fuer die walzen von walzenmaschinen, insbesondere hochdruck-walzenpressen |
DE9422077U1 (de) * | 1993-07-20 | 1998-01-22 | Koeppern & Co Kg Maschf | Walzenpresse, insbesondere zum Zerkleinern von stark abrasiven Stoffen |
AU7531894A (en) | 1993-07-20 | 1995-02-20 | Gunter, Harald | Roller presses, in particular for crushing strongly abrasive substances |
US20120048976A1 (en) * | 2009-04-20 | 2012-03-01 | Hofmann Engineering Pty Ltd. | Pressure roller |
-
2010
- 2010-12-17 DE DE102010061309A patent/DE102010061309B3/de not_active Expired - Fee Related
-
2011
- 2011-11-28 US US13/988,539 patent/US9272284B2/en not_active Expired - Fee Related
- 2011-11-28 EP EP11790945.7A patent/EP2498911B1/de not_active Not-in-force
- 2011-11-28 AU AU2011344551A patent/AU2011344551B2/en not_active Ceased
- 2011-11-28 DK DK11790945.7T patent/DK2498911T3/da active
- 2011-11-28 WO PCT/EP2011/071156 patent/WO2012079965A2/de active Application Filing
- 2011-11-28 CA CA2818801A patent/CA2818801C/en not_active Expired - Fee Related
- 2011-11-28 MX MX2013006890A patent/MX2013006890A/es active IP Right Grant
- 2011-11-28 BR BR112013013401A patent/BR112013013401A8/pt not_active Application Discontinuation
- 2011-11-28 PE PE2013001419A patent/PE20131507A1/es active IP Right Grant
-
2013
- 2013-06-12 CL CL2013001688A patent/CL2013001688A1/es unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2012079965A2 * |
Also Published As
Publication number | Publication date |
---|---|
PE20131507A1 (es) | 2014-01-10 |
AU2011344551A1 (en) | 2013-06-13 |
DK2498911T3 (da) | 2013-11-18 |
EP2498911B1 (de) | 2013-08-28 |
CL2013001688A1 (es) | 2013-12-06 |
US20130248630A1 (en) | 2013-09-26 |
MX2013006890A (es) | 2013-07-05 |
DE102010061309B3 (de) | 2012-05-24 |
CA2818801A1 (en) | 2012-06-21 |
WO2012079965A3 (de) | 2012-08-09 |
AU2011344551B2 (en) | 2016-03-03 |
CA2818801C (en) | 2018-03-20 |
BR112013013401A2 (pt) | 2016-09-06 |
US9272284B2 (en) | 2016-03-01 |
BR112013013401A8 (pt) | 2018-02-06 |
WO2012079965A2 (de) | 2012-06-21 |
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