EP1833612B1 - Wälzmühle in modulbauweise - Google Patents

Wälzmühle in modulbauweise Download PDF

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Publication number
EP1833612B1
EP1833612B1 EP05806749A EP05806749A EP1833612B1 EP 1833612 B1 EP1833612 B1 EP 1833612B1 EP 05806749 A EP05806749 A EP 05806749A EP 05806749 A EP05806749 A EP 05806749A EP 1833612 B1 EP1833612 B1 EP 1833612B1
Authority
EP
European Patent Office
Prior art keywords
grinding
standards
rocking lever
roller mill
bearing
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.)
Not-in-force
Application number
EP05806749A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1833612A1 (de
Inventor
Thomas Letsch
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.)
Loesche GmbH
Original Assignee
Loesche GmbH
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 Loesche GmbH filed Critical Loesche GmbH
Priority to PL05806749T priority Critical patent/PL1833612T3/pl
Publication of EP1833612A1 publication Critical patent/EP1833612A1/de
Application granted granted Critical
Publication of EP1833612B1 publication Critical patent/EP1833612B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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 according to the preamble of claim 1.
  • Roller mills in modular design can be constructed, for example, according to the LOESCHE system.
  • a force unit is used as a block, which consists of a stand with a rocker arm bearing for a rocker arm and guided therein grinding roller, a rocker arm seal against the mill housing and a hydropneumatic suspension system ( DE 196 03 655 A1 ).
  • An advantage of the modular construction is a mill construction which can be realized with a relatively low outlay in accordance with the required grinding capacity.
  • roller mills with two, three, four or more, rolling on a rotating grinding bowl grinding rollers are known.
  • Modular air flow roller mills according to the Loesche system have hitherto been implemented in arrangements with two, three and four rollers.
  • the largest Loesche roller mill to date for the cement industry has a nominal grinding capacity of 840 t / h for cement raw material. In this mill, the weight of a grinding roller with rocker arm is about 90 t.
  • An increase in the capacity of a roller mill can in principle also be achieved with a larger number of rolls, for example with five or six grinding rolls. This means a corresponding increase in the number of stands and a smaller distance between the stands.
  • the invention has for its object to provide a roller mill in modular design, in which while maintaining the advantages of the modular design of a 4-roll mill with a larger number of grinding rollers a significant increase in grinding nominal power while ensuring sufficient space for assembly and maintenance is guaranteed.
  • a basic idea of the invention can be seen in designing the position of the oscillating lever axes with respect to the respectively associated stand in such a way that the stator and grinding roller oscillating lever construction as well as the grinding table can be retained and at the same time a sufficient installation space for the mill gear or for the mill Mahlschüssellagerung and also for the annular channel and the gas channels below the grinding bowl are present.
  • a roller mill for example a 6-roller mill
  • grinding rollers with a limited grinding roller / oscillating lever mass and a grinding plate are used, which are known, for example, from 4-roller mills.
  • the stands can advantageously also correspond to the known stands. Excluded is the arrangement of the rocker arm axes in or on the uprights.
  • the stands are arranged to realize a sufficiently large installation space for the transmission and a sufficient space for the annular channel and the gas channels of the gas streams at a greater radial distance from the grinding bowl or to the mill center, the position of the rocker axes to Mahlschadorel or to the mill center but it is not changed.
  • the oscillating lever axis is in a new position.
  • the oscillating lever axis is no longer arranged as in the known roller mill within the stator profile, for example on the longitudinal axis of the stator.
  • each oscillating lever axis is formed outside of the stator and is located, relative to a circular ring formed by the uprights, radially inward in the direction of the grinding table or mill center.
  • the arrangement of the rocker axles for the grinding rollers outside the stand means at the same time that the rocker axes are no longer provided within the floor plans of the stand.
  • the rocker shaft is no longer on the vertical column axis, and the stands are no longer substantially cylindrical structures with a generally rectangular cross-section, but have an upper portion with a bearing part for the rocker shaft, which for example, a "bent" and pointing towards the mill center area.
  • the bearing part for the rocker arm axis can be integrated into the uprights and manufactured with them, which can be advantageous, for example, in the case of steel uprights.
  • the bearing part is then a projecting towards the mill center part which receives the rocker arm axis.
  • the stand can also be designed as a concrete stand. It is then advisable to arrange a bearing block at the top of the stand as a casting and to provide the bearing block with a radially inwardly projecting towards grinding plate bearing part.
  • roller mill The main advantages of the roller mill according to the invention are that an increase in the nominal grinding capacity by arranging several grinding rollers around a grinding table can be achieved, the known and proven roller / rocker arm construction can be used and also the grinding table can be substantially maintained. By only the stands are displaced radially outward and the arrangement or positioning of the bearing for the oscillating lever axis of the stator with respect to the mill center or the grinding table is not changed, relatively low construction and investment costs for mills different grinding performance required.
  • the bearing part When using a bearing block, it is expedient to provide a fastening part, with which the bearing block can be attached to the stand, and to arrange the bearing part for the swing lever axis.
  • the bearing part may be in the form of two cheeks spaced apart from each other.
  • stator rocker arm axle construction advantageous measures for stiffening can be provided.
  • intermediate elements can be arranged which fill the space between the uprights and oscillating lever axes and form a torsion-resistant rim or ring.
  • the intermediate elements may extend from the radially outer edge of the stand or the bearing blocks to the mill housing or to the radially inner end of the bearing part and be formed almost circular ring segment-like.
  • Fig. 1 is a perspective view of a roller mill shown, but only the essential components are shown in the context of the present invention. For better clarity, it was decided not to display the entire mill housing with integrated sifter.
  • roller mill In the roller mill according to Fig. 1 and 2 it is a modular 6-roller mill. There are six grinding rollers 2 arranged around a rotating grinding table 3. Each grinding roller 2 is guided in a rocking lever 4 and mounted pivotably about a rocking lever axis 5 and supported on a stand 7 via the rocking lever axis 5.
  • openings 17 are provided in the mill housing 16.
  • the openings 17 are provided to form a gas-tight mill housing 16 with corresponding covers (not shown).
  • Each grinding roller 2 with rocker arm 4 and horizontal rocker shaft 5 has a hydropneumatic suspension 18, which is anchored to the stator 7 in a mill foundation (not shown).
  • the transmission 6 and the mill drive are arranged on a transmission foundation 19 (see also Fig. 2 ). Furthermore, box-shaped gas channels 20 are arranged between the uprights 7, through which the required gas flows are fed to the mill (not shown) on the circumference of the grinding table 3 in the grinding chamber and the sufficiently comminuted millbase for classifier (not shown ) to wear.
  • the rocker axes 5 of the grinding rollers 2 are mounted in a bearing block 10. From the enlarged representations of a stand 7 in the Fig. 3 to 5 Go out arrangement and training of the bearing block 10. According to the invention, the oscillating lever axis 5 is no longer above the stator 7 or on the longitudinal axis 14 of the stator, but next to or in a radially inwardly offset in the direction of the grinding table 3 position.
  • the bearing block 10 is fastened with a fastening part 11.
  • the fastening part 11 has a complementary design to the upper region of the uprights 7.
  • a bearing part 12 in the form of two cheeks 13 is provided, which serve for the mounting of the oscillating lever axis 5.
  • the uprights 7 are displaced outwards compared to a 4-roll mill.
  • the rocking lever axis 5 with respect to the rocking lever 4 and the grinding roller 2 and towards the mill center or mill axis the position of the rocking lever axis 5 with respect to the uprights 7 has been changed.
  • an eccentric arrangement of the oscillating lever axis 5 relative to the uprights 7 is achieved by a corresponding design of the separate bearing block 10.
  • intermediate elements 15 are arranged for stiffening and forming a torsionally rigid ring.
  • FIG. 2 is a highly schematic representation of the arrangement of the stator 7 of the mill according to Fig. 1 shown in their lower part.
  • the gear 6 is shown in the center of the mill with a geared foundation 19, it is clear that the required expansion space 21 between two adjacent uprights 7 is present.
  • Fig. 3 to 5 are the in Fig. 1 shown stand 7 shown enlarged. They illustrate the eccentric or outside the outline of the stator 7 positioned oscillating lever axis 5.
  • the oscillating lever axis 5 between the grinding table 3 and the mill housing 16 and the respective stator 7 is without substantial change of the grinding table 3, the grinding rollers. 2 achieved with rocker arm 4 and the lower portions of the stator 7 that more grinding rollers 2, in particular six grinding rollers 2 can be arranged and an increased mill performance can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
EP05806749A 2004-12-23 2005-11-16 Wälzmühle in modulbauweise Not-in-force EP1833612B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05806749T PL1833612T3 (pl) 2004-12-23 2005-11-16 Młyn krążnikowy o budowie modułowej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004062400A DE102004062400B4 (de) 2004-12-23 2004-12-23 Wälzmühle in Modulbauweise
PCT/EP2005/012301 WO2006072275A1 (de) 2004-12-23 2005-11-16 Wälzmühle in modulbauweise

Publications (2)

Publication Number Publication Date
EP1833612A1 EP1833612A1 (de) 2007-09-19
EP1833612B1 true EP1833612B1 (de) 2012-05-16

Family

ID=35871027

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05806749A Not-in-force EP1833612B1 (de) 2004-12-23 2005-11-16 Wälzmühle in modulbauweise

Country Status (11)

Country Link
US (1) US7597281B2 (es)
EP (1) EP1833612B1 (es)
JP (1) JP4693844B2 (es)
CN (1) CN101060933B (es)
DE (1) DE102004062400B4 (es)
DK (1) DK1833612T3 (es)
EA (1) EA010236B1 (es)
ES (1) ES2386451T3 (es)
PL (1) PL1833612T3 (es)
UA (1) UA90492C2 (es)
WO (1) WO2006072275A1 (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004062400B4 (de) * 2004-12-23 2006-10-26 Loesche Gmbh Wälzmühle in Modulbauweise
DE102006061328B4 (de) * 2006-12-22 2014-01-16 Gebr. Pfeiffer Ag Wälzmühle
US20100292447A1 (en) * 2007-10-12 2010-11-18 Merck Patent Gesellschaft Method and agent for refolding proteins
DE102008015141A1 (de) * 2008-03-20 2009-11-05 Gebr. Pfeiffer Ag Wälzmühle
DE202009004025U1 (de) 2009-03-19 2010-08-12 Loesche Gmbh Hydraulikanordnung für Wälzmühlen
FR2979838B1 (fr) * 2011-09-09 2016-01-15 Cie Engrenages Et Reducteurs Messian Durand Entrainement de broyeur vertical a plusieurs entrainements principaux
CN103889579B (zh) 2011-11-11 2015-11-25 川崎重工业株式会社 立式辊磨机
WO2017044472A1 (en) * 2015-09-09 2017-03-16 Flsmidth A/S Seal for a comminution apparatus
US10493462B2 (en) * 2016-06-21 2019-12-03 General Electric Technology Gmbh System, method and apparatus for upgrading a pulverizer
WO2020098973A1 (de) * 2019-01-17 2020-05-22 Loesche Gmbh Walzenhebelmodul
DK3866979T3 (da) 2019-04-04 2022-10-24 Loesche Gmbh Vægtstangssystem til kraftoverføring

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2192310A (en) * 1938-06-30 1940-03-05 Stanley D Hartshorn Differential roll crusher
US2206145A (en) * 1938-12-22 1940-07-02 Comb Eng Co Inc Air flow choke for bowl mills
JPS62204863A (ja) * 1986-03-05 1987-09-09 川崎重工業株式会社 竪型ミル
JPH074548B2 (ja) * 1990-02-02 1995-01-25 宇部興産株式会社 竪型粉砕機
JPH0716483A (ja) * 1993-07-02 1995-01-20 Ube Ind Ltd 竪型粉砕機
DE19603655A1 (de) * 1996-02-01 1997-08-07 Loesche Gmbh Wälzmühle
DE19702854A1 (de) * 1997-01-27 1998-07-30 Krupp Polysius Ag Verfahren und Rollenmühle zur Zerkleinerung von Mahlgut
DE102004062400B4 (de) * 2004-12-23 2006-10-26 Loesche Gmbh Wälzmühle in Modulbauweise

Also Published As

Publication number Publication date
EA010236B1 (ru) 2008-06-30
EP1833612A1 (de) 2007-09-19
US7597281B2 (en) 2009-10-06
DK1833612T3 (da) 2012-08-06
ES2386451T3 (es) 2012-08-21
JP4693844B2 (ja) 2011-06-01
WO2006072275A1 (de) 2006-07-13
JP2008525170A (ja) 2008-07-17
CN101060933B (zh) 2012-09-19
PL1833612T3 (pl) 2012-08-31
CN101060933A (zh) 2007-10-24
EA200700967A1 (ru) 2007-10-26
DE102004062400B4 (de) 2006-10-26
US20080041990A1 (en) 2008-02-21
DE102004062400A1 (de) 2006-07-06
UA90492C2 (ru) 2010-05-11

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