EP2081689B1 - Broyeur à galets - Google Patents

Broyeur à galets Download PDF

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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
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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
Application number
EP07822380A
Other languages
German (de)
English (en)
Other versions
EP2081689A1 (fr
Inventor
Pedro Guerrero Palma
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
Polysius AG
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Filing date
Publication date
Application filed by Polysius AG filed Critical Polysius AG
Publication of EP2081689A1 publication Critical patent/EP2081689A1/fr
Application granted granted Critical
Publication of EP2081689B1 publication Critical patent/EP2081689B1/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
    • 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)

Claims (10)

  1. Broyeur à galets avec au moins un galet broyeur (1) et un plateau de broyage rotatif (2), qui sont disposés dans un espace intérieur (4) du broyeur, ainsi qu'un bras de puissance (5), qui est maintenu en pivotement et solidaire en rotation dans un palier (6), le galet broyeur (1) étant monté en rotation à une extrémité du bras de puissance, et des moyens, destinés à exercer une force sur le bras de puissance, étant en outre prévus, lesquels moyens sont en contact actif avec le bras de puissance pour régler la pression de broyage exercée par le galet broyeur, le point de contact (8), auquel la force est transmise au bras de puissance (5), étant situé en dehors de l'espace intérieur (4) du broyeur, caractérisé en ce que les moyens, destinés à exercer la force sur le bras de puissance, comprennent un cylindre de pression (7), qui est en contact actif avec le bras de puissance pour régler la pression de broyage exercée par le galet broyeur, et en ce qu'est prévu, entre le cylindre de pression et le bras de puissance (5), au moins un palier de butée (10), qui permet un mouvement relatif entre le cylindre de pression (7) et le bras de puissance (5).
  2. Broyeur à galets selon la revendication 1, caractérisé en ce que le cylindre de pression (7) agit sur le bras de force (5), dans un domaine médian entre le galet broyeur (1) et le palier (6).
  3. Broyeur à galets selon la revendication 1, caractérisé en ce que le palier de butée (10) présente une première et une deuxième surfaces de pression (10a, 10b) pour l'exercice d'un mouvement de glissement, ainsi qu'une troisième et une quatrième surfaces de pression (10c, 10d) pour l'exercice d'un mouvement de pivotement.
  4. Broyeur à galets selon revendication 1 ou 3, caractérisé en ce que le palier de butée (10) présente une première et une deuxième surfaces de pression (10a, 10b), qui permettent un mouvement de glissement, dont le coefficient de friction est inférieur à 0,2.
  5. Broyeur à galets selon la revendication 1, caractérisé en ce que le cylindre de pression (7) est installé fixement.
  6. Broyeur à galets selon la revendication 1, caractérisé en ce que le cylindre de pression (7) est orienté perpendiculairement à la liaison entre le palier (6) et le galet broyeur (1).
  7. Broyeur à galets selon la revendication 1, caractérisé en ce que le palier (6) du bras de puissance (5) est formé par un palier d'articulation axial.
  8. Broyeur à galets selon revendication 1 ou 3, caractérisé en ce que le bras de puissance (5) est de conception linéaire.
  9. Broyeur à galets selon la revendication 1, caractérisé en ce que le cylindre de pression (7) est formé par un cylindre plongeur.
  10. Broyeur à galets selon la revendication 1, caractérisé en ce que la relation de l'intervalle (a) entre le cylindre de pression (7) et le galet broyeur (1) et de l' intervalle (b) entre le cylindre de pression (7) et le palier (6) du bras de force (5) est de l'ordre de 1 : 0,9 et 1 : 1,2, de préférence de l'ordre de 1 : 1,0 et 1 : 1,1.
EP07822380A 2006-12-08 2007-11-08 Broyeur à galets Active EP2081689B1 (fr)

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 (fr) 2006-12-08 2007-11-08 Broyeur à galets

Publications (2)

Publication Number Publication Date
EP2081689A1 EP2081689A1 (fr) 2009-07-29
EP2081689B1 true EP2081689B1 (fr) 2010-09-15

Family

ID=38890643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07822380A Active EP2081689B1 (fr) 2006-12-08 2007-11-08 Broyeur à galets

Country Status (7)

Country Link
US (1) US7954743B2 (fr)
EP (1) EP2081689B1 (fr)
JP (1) JP5265565B2 (fr)
CN (1) CN101563163B (fr)
DE (2) DE102006058012A1 (fr)
DK (1) DK2081689T3 (fr)
WO (1) WO2008068125A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
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
DE102008039543B4 (de) * 2008-08-25 2010-05-12 Polysius Ag Rollenmühle
DE102008039539B4 (de) * 2008-08-25 2010-08-26 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
WO2015051925A1 (fr) * 2014-03-21 2015-04-16 Loesche Gmbh Procédé et dispositif de traitement et de séparation d'un matériau à partir d'un système contenant plusieurs substances liées
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)

* Cited by examiner, † Cited by third party
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 (fr) * 1976-07-02 1977-07-06
JPS5574824U (fr) * 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

Also Published As

Publication number Publication date
US20100012760A1 (en) 2010-01-21
WO2008068125A1 (fr) 2008-06-12
US7954743B2 (en) 2011-06-07
DE502007005083D1 (de) 2010-10-28
CN101563163A (zh) 2009-10-21
EP2081689A1 (fr) 2009-07-29
JP2010511502A (ja) 2010-04-15
DE102006058012A1 (de) 2008-06-19
CN101563163B (zh) 2011-04-27
DK2081689T3 (da) 2011-01-03
JP5265565B2 (ja) 2013-08-14

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