EP2081689B1 - Rollenmühle - Google Patents
Rollenmühle Download PDFInfo
- Publication number
- EP2081689B1 EP2081689B1 EP07822380A EP07822380A EP2081689B1 EP 2081689 B1 EP2081689 B1 EP 2081689B1 EP 07822380 A EP07822380 A EP 07822380A EP 07822380 A EP07822380 A EP 07822380A EP 2081689 B1 EP2081689 B1 EP 2081689B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- mill
- moment arm
- bearing
- pressure
- 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
Links
- 238000003801 milling Methods 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims 1
- 238000000227 grinding Methods 0.000 description 28
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 208000016261 weight loss Diseases 0.000 description 1
Images
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
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/04—Mills with pressed pendularly-mounted rollers, e.g. spring pressed
Definitions
- the invention relates to a roller mill with at least one grinding roller and a rotatable grinding plate.
- roller mills are known in a variety of configurations.
- the grinding roller is fixed to one end of a rotatable shaft which is supported outside the mill in a spherical roller bearing.
- a power arm is provided, which is supported pivotably and non-rotatably in a bearing, wherein the grinding roller is rotatably mounted at one end of the power arm.
- means for applying a force to the power arm are provided to adjust the grinding pressure exerted by the grinding roller.
- the means for exerting a force on the power arm are formed in many applications by spring elements. To be able to vary the grinding pressure better and to be able to set larger grinding pressures, however, hydraulic cylinders are often used.
- This hydraulic cylinder is formed by a hinged and articulated connected to the power arm pull cylinder.
- a coal mill is known in which the power arm is in operative connection with a pressure cylinder to adjust the grinding pressure exerted by the grinding roller.
- the cylinder is fixedly mounted on the housing wall, so that the cylinder piston protrudes into the mill interior and there transmits the force via a guided in a sleeve punch on the power arm. Since the power arm is mounted pivotably, occur in the region of the contact point on high transverse forces that must be absorbed by the sleeve.
- the DE 742 912 C describes a spring roller mill with mounted outside of the mill housing, pushed by springs against the grinding path commuting. Furthermore, from the US-A-4,610,401 a roller mill with a milling roller mounted on a power arm known, wherein via a pressure cylinder, a force is transmitted to the power arm to adjust the pressure exerted by the grinding roller grinding pressure. The contact point at which the force is transmitted to the power arm, is located within the mill interior.
- the invention is based on the object to find a new design for the introduction of a force on the power arm.
- the roller mill according to the invention consists essentially of at least one grinding roller and a rotatable grinding table, which are arranged in a mill interior and a power arm which is pivotally and rotatably supported in a bearing, wherein the grinding roller is rotatably mounted at one end of the power arm and further means for Applying a force to the force arm are provided, which comprise a pressure cylinder which is in operative contact with the force arm to adjust the grinding pressure exerted by the grinding roller.
- the contact point at which the force of the printing cylinder is transferred to the power arm it is outside the mill interior.
- At least one thrust bearing is provided between the pressure cylinder and the power arm, which allows a relative movement between the pressure cylinder and the power arm.
- a printing cylinder can be made smaller and more compact compared to a pull cylinder, whereby installation space is saved.
- An arranged outside the mill interior contact point also has the advantage that it is exposed to lower wear, since there is no dust and no high temperatures.
- the pressure cylinder is arranged fixed.
- a fixed cylinder is on the one hand more compact and reduces the moving masses of a reel unit, which has a favorable effect on the vibrations.
- the printing cylinder is expediently aligned perpendicular to the connection between the bearing and the grinding roller, whereby an optimal power transmission is possible. Furthermore, the printing cylinder is preferably arranged in a central region between the grinding roller and the bearing.
- the thrust bearing can in particular have a first and a second pressure surface for exerting a sliding movement, wherein the coefficient of friction is preferably less than 0.2.
- the thrust bearing With the thrust bearing, the relative movement between the fixed pressure cylinder and the pivotable power arm can be compensated so far that the forces acting on the impression cylinder transverse forces are minimized.
- a third and a fourth pressure surface are also provided for exercising a pivoting movement, thereby further minimizing the transverse forces. Due to the arrangement of the thrust bearing outside of the mill interior, a complex sealing of the bearing is not required.
- Roller mill shown consists essentially of a grinding roller 1 and a rotatable grinding table 2, which are arranged in a limited by a housing 3 mill interior 4. Furthermore, a power arm 5 is provided, which is pivotable and rotationally fixed in a bearing 6 designed as a fixed bearing is supported, wherein the grinding roller 1 is rotatably mounted at the opposite end of the power arm.
- means for applying a force to the power arm 5 are provided to adjust the pressure exerted by the grinding roller.
- This means comprises a pressure cylinder 7, which is fixedly arranged and acts approximately vertically to the line connecting bearing 6 and grinding roller 1 on the power arm 5.
- the impression cylinder 7 is preferably formed by a plunger cylinder.
- a contact point 8 at which the force of the printing cylinder 7 is transmitted to the power arm 5, is located outside of the mill interior 4th
- the pressure cylinder 7 acts in a central region between the grinding roller 1 and bearing 6 on the power arm 5.
- the positions of bearing and pressure cylinder are reversed.
- the power arm 5 is formed in a straight line in the illustrated embodiment, but also bent arms are considered in principle.
- the bearing 6 is preferably formed by an axial spherical plain bearing, wherein in particular two mutually juxtaposed axial spherical plain bearings are used, which can be braced against each other, whereby the bearing clearance can be minimized.
- the grinding roller 1 at the other end of the power arm 5 is mounted via two tapered roller bearings 9 mounted in an O arrangement, wherein a lubricant space 10 of the tapered roller bearings 9 extends to a region outside of the mill interior 4 and is sealed there.
- the bearing 6 allows a tilting movement of the power arm 5 by an angle ⁇ . It thus comes to a relative movement between the fixed pressure cylinder 7 and the power arm. 5 Since the pressure cylinder 7 is in constant operative contact with the power arm 5, it is therefore in the region of the contact point due to the relative movement to shear forces. In order to compensate for the relative movement between the impression cylinder 7 and the force arm 5, a thrust bearing 10 is provided that allows a relative movement between the impression cylinder and the power arm. The thrust bearing is in Fig.
- FIG. 3 shown in more detail and has a first and a second pressure surface 10a, 10b for exerting a sliding movement, wherein by suitable selection of the sliding pair a coefficient of friction is provided smaller than 0.2.
- a third and a fourth sliding surface is also provided for exercising a pivoting movement. Again, the coefficient of friction can be minimized by suitable sliding mating.
- Fig. 3 are shown in solid lines the center position of the power arm and with dotted lines the two extreme positions of the power arm in conjunction with the thrust bearing.
- the power transmission from the impression cylinder to the power arm can be done in a very compact manner.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006058012A DE102006058012A1 (de) | 2006-12-08 | 2006-12-08 | Rollenmühle |
PCT/EP2007/062078 WO2008068125A1 (de) | 2006-12-08 | 2007-11-08 | Rollenmühle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2081689A1 EP2081689A1 (de) | 2009-07-29 |
EP2081689B1 true EP2081689B1 (de) | 2010-09-15 |
Family
ID=38890643
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07822380A Active EP2081689B1 (de) | 2006-12-08 | 2007-11-08 | Rollenmühle |
Country Status (7)
Country | Link |
---|---|
US (1) | US7954743B2 (ru) |
EP (1) | EP2081689B1 (ru) |
JP (1) | JP5265565B2 (ru) |
CN (1) | CN101563163B (ru) |
DE (2) | DE102006058012A1 (ru) |
DK (1) | DK2081689T3 (ru) |
WO (1) | WO2008068125A1 (ru) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008010652B3 (de) * | 2008-02-22 | 2009-11-05 | Polysius Ag | Kraftübertragungssystem und Rollenmühle |
DE102008039542B4 (de) * | 2008-08-25 | 2010-04-15 | Polysius Ag | Rollenmühle |
DE102008039539B4 (de) * | 2008-08-25 | 2010-08-26 | Polysius Ag | Rollenmühle |
DE102008039543B4 (de) * | 2008-08-25 | 2010-05-12 | Polysius Ag | Rollenmühle |
DE102012106554A1 (de) * | 2012-07-19 | 2014-05-15 | Thyssenkrupp Resource Technologies Gmbh | Verfahren und Anlage zur Zerkleinerung von Mahlgut mit einer Rollenmühle |
US9835595B2 (en) * | 2013-05-23 | 2017-12-05 | Qorvo Us, Inc. | Sensors, methods of making and devices |
EP2903744B1 (de) * | 2014-03-21 | 2017-02-22 | Loesche GmbH | Verfahren und vorrichtung zum aufbereiten und trennen eines materials aus einem verbundenen mehrstoffsystem |
US10799874B2 (en) * | 2015-05-27 | 2020-10-13 | General Electric Technology Gmbh | Modified journal assembly for pulverizer |
CN107470421B (zh) * | 2017-08-25 | 2024-02-27 | 中国人民解放军第五七二一工厂 | 一种内侧置于封闭空间的轴承单侧滚压收口装置 |
CN113458321A (zh) * | 2021-05-31 | 2021-10-01 | 刘晨旭 | 一种提高混砂效果的混砂机碾轮机构 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE742912C (de) | 1939-08-25 | 1943-12-15 | Neuman & Esser | Federrollenmuehle fuer UEberdruckbetrieb |
US2342255A (en) * | 1943-08-30 | 1944-02-22 | Lawrence N Doyle | Pulverizer |
DD126241A1 (ru) * | 1976-07-02 | 1977-07-06 | ||
JPS5574824U (ru) * | 1978-11-20 | 1980-05-23 | ||
US4610401A (en) | 1982-12-06 | 1986-09-09 | Combustion Engineering, Inc. | Trimetal pulverizer roll |
JPS61227855A (ja) * | 1985-04-02 | 1986-10-09 | 川崎重工業株式会社 | 竪型ロ−ラミル |
DE3801728C2 (de) | 1988-01-21 | 1998-07-02 | Krupp Polysius Ag | Rollenmühle |
JPH06154633A (ja) * | 1992-11-25 | 1994-06-03 | Ishikawajima Harima Heavy Ind Co Ltd | 竪型ローラミル |
US5529253A (en) * | 1995-04-05 | 1996-06-25 | March-Southwestern Corp. | Spring canister for pulverizer |
CN2255312Y (zh) * | 1995-10-22 | 1997-06-04 | 肖黎明 | 新型高压悬辊磨 |
JP3286241B2 (ja) * | 1998-02-24 | 2002-05-27 | 株式会社栗本鐵工所 | 竪型ミル |
JP2000312832A (ja) * | 1999-04-30 | 2000-11-14 | Ishikawajima Harima Heavy Ind Co Ltd | 竪型ミル |
JP4665308B2 (ja) | 2000-11-28 | 2011-04-06 | 株式会社Ihi | 竪型ミル |
JP2002159875A (ja) * | 2000-11-28 | 2002-06-04 | Ishikawajima Harima Heavy Ind Co Ltd | 竪型ミル |
AU2003232380B2 (en) * | 2002-05-29 | 2007-02-01 | Anglo American Research Laboratories (Pty) Ltd | Enhanced ore comminution process and apparatus |
US7028934B2 (en) * | 2003-07-31 | 2006-04-18 | F. L. Smidth Inc. | Vertical roller mill with improved hydro-pneumatic loading system |
US7226010B2 (en) * | 2004-02-27 | 2007-06-05 | Abb Inc. | Method and apparatus for solid fuel pulverizing operation and maintenance optimization |
-
2006
- 2006-12-08 DE DE102006058012A patent/DE102006058012A1/de not_active Withdrawn
-
2007
- 2007-11-08 JP JP2009539688A patent/JP5265565B2/ja active Active
- 2007-11-08 CN CN2007800428686A patent/CN101563163B/zh active Active
- 2007-11-08 DK DK07822380.7T patent/DK2081689T3/da active
- 2007-11-08 EP EP07822380A patent/EP2081689B1/de active Active
- 2007-11-08 DE DE502007005083T patent/DE502007005083D1/de active Active
- 2007-11-08 WO PCT/EP2007/062078 patent/WO2008068125A1/de active Application Filing
- 2007-11-08 US US12/514,519 patent/US7954743B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
DK2081689T3 (da) | 2011-01-03 |
DE502007005083D1 (de) | 2010-10-28 |
JP2010511502A (ja) | 2010-04-15 |
US20100012760A1 (en) | 2010-01-21 |
WO2008068125A1 (de) | 2008-06-12 |
JP5265565B2 (ja) | 2013-08-14 |
US7954743B2 (en) | 2011-06-07 |
CN101563163A (zh) | 2009-10-21 |
EP2081689A1 (de) | 2009-07-29 |
DE102006058012A1 (de) | 2008-06-19 |
CN101563163B (zh) | 2011-04-27 |
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