EP2994235A2 - Maschinenschnittstelle, antrieb und vertikalmühle - Google Patents
Maschinenschnittstelle, antrieb und vertikalmühleInfo
- Publication number
- EP2994235A2 EP2994235A2 EP14736671.0A EP14736671A EP2994235A2 EP 2994235 A2 EP2994235 A2 EP 2994235A2 EP 14736671 A EP14736671 A EP 14736671A EP 2994235 A2 EP2994235 A2 EP 2994235A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive
- machine interface
- grinding
- grinding bowl
- bowl
- 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
- 238000000227 grinding Methods 0.000 title claims abstract description 62
- 230000002829 reductive effect Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000012054 meals Nutrition 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 241000283153 Cetacea Species 0.000 description 1
- 101000880116 Homo sapiens SERTA domain-containing protein 2 Proteins 0.000 description 1
- 102100037351 SERTA domain-containing protein 2 Human genes 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001599 direct drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- B02C15/006—Ring or disc drive gear arrangement
-
- 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
- B02C15/007—Mills with rollers pressed against a rotary horizontal disc
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/24—Passing gas through crushing or disintegrating zone
Definitions
- the invention relates to a machine interface between a grinding bowl of a vertical mill and a drive of the grinding bowl, a drive and a vertical mill.
- Fig. 1 is a whale zenmühle with a rotating about the vertical axis meal ⁇ bowl 7 and then grinding rollers rolling 4. The drive of the grinding table via a gear 9. Such mills, which inter alia used in cement production, referred to as vertical mills.
- a hot gas generator is used in cement production during the grinding process.
- a temperature of 80 ° C to 130 ° C is reached in the grinding chamber.
- the oil coolers used for cooling the drive ie for cooling the gears and the bearings, must be made larger than would be necessary without heated grinding space. It is an object of the present invention to provide an improved machine interface between a grinding table of a Ver ⁇ tikalmühle and len formatzustel- a drive of the grinding table, and a drive and a vertical mill.
- the machine interface according to the invention is located between a grinding bowl of a vertical mill and an on ⁇ operation of the grinding bowl.
- the machine interface is designed so that the grinding bowl and the drive are thermally decoupled ⁇ mix. Compared with conventional machine interfaces in vertical mills, a heat flow directed from the grinding bowl to the drive is thereby substantially reduced.
- ⁇ temperature difference.
- a reduction of this heat flow is by a reductive ⁇ tion of the thermal conductivity ⁇ and / or the area A of Ma ⁇ schin interface achievable.
- the present machine interface is a particularly cost-effective and robust solution, since it is mechanically very simple.
- the oil cooler of vertical mills can be designed smaller than before. A rough estimate has shown a possible cost saving of about 25% compared to conventional mills. This also leads to lower follow-up costs for the plant operator, eg a saving of electricity costs by the smaller oil supply system.
- a material which is thermally insulating against metal is arranged between the grinding bowl and the drive. Additionally or alternatively, a contact surface between the grinding bowl and the drive can be designed as small as possible for a given carrying capacity.
- a thermal insulation layer is thus arranged.
- Preferred heat-insulating materials meet the requirements of mechanical strength (Tragfä ⁇ ability, shear strength, etc.) on the machine interface and have a low compared to metal bathleitfä ⁇ ability.
- Preferred heat-insulating materials have a thermal conductivity ⁇ ⁇ 1 W / (mK), more preferably ⁇ ⁇ 0.5 W / (mK).
- Suitable materials include ceramic or plastic in the form of discs or coating. The greater the thickness d of the insulating material, the greater its insulating effect, and thus the reduction of the heat flow.
- the bearing surface is reduced as much as mög ⁇ Lich. Proportional to the reduction of the contact surface, the heat flow through the machine interface is reduced.
- a preferred embodiment of the invention is a drive, in particular a transmission, with a suitable flange for connecting a grinding bowl, wherein the flange is designed as a machine interface as described above.
- a further preferred development of the invention is a vertical mill with a machine interface as described above.
- Fig. 1 is a first sectional view of a vertical mill
- FIG. 2 shows a first embodiment of the machine interface
- FIG. 3 shows a further embodiment of the machine Thomasstel ⁇ le
- Fig. 5 is a further sectional view of a vertical mill
- Fig. 1 shows a section of a vertical mill 3 with a rotatable grinding bowl 2 and a drive 4 of Mahlschüs- sei 2, which causes the rotation of the grinding bowl 2.
- the Ver ⁇ tikalmühle 3 includes a machine interface.
- the drive 4 has a drive on its vertically upper side. flange 40, which is suitable for connecting the grinding bowl 2.
- the vertically upwardly directed side of the drive flange 40 forms a contact surface 7, on which the grinding bowl 2 rests on the drive 4.
- the contact surface 7 of grinding bowl 2 and drive flange 40 thus forms ⁇ with the said machine interface.
- the grinding bowl 2 is arranged in a grinding chamber 9, wel ⁇ cher is limited by a housing 8. By heating the grinding chamber 9, a heat flow 10 is produced, which flows from the grinding bowl 2 via the machine interface 1 to the drive 4.
- Maschi ⁇ nenschnittstelle 1 is now configured such that the directed from the meal ⁇ bowl 2 to the drive 4 lent heat flow 10 essential is hindered.
- Fig. 2 shows a first embodiment of the invention.
- a heat-insulating layer 5 for example in the form of a mat, a disc or a coating, is arranged on the machine interface 1 between the grinding bowl 2 and the drive 4.
- the grinding bowl 2 and the grinding bowl 2 tra ⁇ ing part of the drive 4 are usually made of a metal such as steel with a thermal conductivity ⁇ in the range of about 15 to 60 W / (mK).
- the heat-insulating layer 5 against DA consists of a material which both the require ⁇ extensions (to the mechanical load-bearing capacity,
- Shear strength, etc. meets as well as having a relatively low thermal conductivity.
- a suitable material is e.g. Durobest from the manufacturer AGK Hoch intricateswerktechnik GmbH, Dortmund (DE).
- the material series Durobest 110-280 comprises hard papers and hard tissues with a thermal conductivity ⁇ in the range of 0.18 to 0.3 W / (m-K).
- Fig. 3 shows a further embodiment of the invention.
- the contact surface 7 is not formed on the entire surface of the machine interface 1 between the grinding bowl 2 and the drive 4, but by a formation of recesses 6 on the upwardly directed side of the drive flange 40th reduced in area. It is advantageous to reduce the Kunststoffflä ⁇ che of grinding bowl 2 and drive 4 as far as it is possible in compliance with the static requirements. As a consequence of the reduction of the area results in a reduced compared to a full-area contact surface, in the optimal case minimized heat flow.
- FIG. 4 shows a further embodiment of the invention, in which the embodiments according to FIGS. 2 and 3 are combined with one another.
- the reduced by a formation of recesses contact surface 7 is covered by a heat ⁇ me insulating layer 5.
- Fig. 5 shows a further section of a vertical mill.
- a grinding bowl 2 Via a drive element 4, comprising an electric motor and a planetary gear, a grinding bowl 2 is angeord ⁇ net on a horizontal An ⁇ drive flange 40 of the drive 4.
- the grinding bowl 2 is - seen along the axis of rotation of the grinding bowl 2 - formed substantially annular and enclosing an air space 11 in its interior.
- the resting on the drive flange 40 of the drive 4 lower ⁇ side of the grinding bowl 2 has a ring shape, so that the contact surface between the drive flange 40 and the grinding bowl resting thereon 2 also has a ring shape.
- He ⁇ invention according to the contact area 7 along the Maschi ⁇ nenroughstelle 1 is now so formed that the grinding table 2 and the drive 4 are thermally decoupled, for example by turning on addition of a thermally insulating layer between the bottom of the grinding table 2 and the upper surface of the drive ⁇ Flange 40 and / or an areal reduction of Kon ⁇ tact surface of grinding bowl 2 and drive 4. In this way, the directed from the grinding bowl 2 to the drive 4 heat flow 10 is substantially hindered.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201310213005 DE102013213005B3 (de) | 2013-07-03 | 2013-07-03 | Maschinenschnittstelle, Antrieb und Vetikalmühle |
PCT/EP2014/063046 WO2015000723A2 (de) | 2013-07-03 | 2014-06-20 | Maschinenschnittstelle, antrieb und vertikalmühle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2994235A2 true EP2994235A2 (de) | 2016-03-16 |
EP2994235B1 EP2994235B1 (de) | 2017-08-02 |
Family
ID=51162717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14736671.0A Active EP2994235B1 (de) | 2013-07-03 | 2014-06-20 | Maschinenschnittstelle, antrieb und vertikalmühle |
Country Status (6)
Country | Link |
---|---|
US (1) | US20160375442A1 (de) |
EP (1) | EP2994235B1 (de) |
BR (1) | BR112015032884B1 (de) |
DE (1) | DE102013213005B3 (de) |
ES (1) | ES2645715T3 (de) |
WO (1) | WO2015000723A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2812207T3 (es) | 2017-06-14 | 2021-03-16 | Flender Gmbh | Transmisión de molino vertical |
ES2833198T3 (es) | 2017-06-30 | 2021-06-14 | Flender Gmbh | Disposición de portapiñón satélite, engranaje de molino vertical y molino vertical |
DK3909682T3 (da) * | 2020-05-14 | 2022-07-04 | Pfeiffer Se Gebr | Fremgangsmåde og valsemølle til termomekanisk aktivering af en lerblanding |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2875959A (en) * | 1957-05-10 | 1959-03-03 | Bermite Powder Company | Tilted axis muller |
DE2703535C2 (de) * | 1977-01-28 | 1986-07-10 | Loesche GmbH, 4000 Düsseldorf | Wälzmühle |
CN1034914C (zh) * | 1994-07-22 | 1997-05-21 | 宇部兴产株式会社 | 一种立式滚压机 |
US6347757B1 (en) * | 2000-03-16 | 2002-02-19 | Hitachi, Ltd. | Coal mill and reduction gear used therefor |
JP6077852B2 (ja) * | 2012-12-18 | 2017-02-08 | 川崎重工業株式会社 | スピニング成形装置 |
-
2013
- 2013-07-03 DE DE201310213005 patent/DE102013213005B3/de not_active Expired - Fee Related
-
2014
- 2014-06-20 WO PCT/EP2014/063046 patent/WO2015000723A2/de active Application Filing
- 2014-06-20 ES ES14736671.0T patent/ES2645715T3/es active Active
- 2014-06-20 BR BR112015032884-9A patent/BR112015032884B1/pt not_active IP Right Cessation
- 2014-06-20 EP EP14736671.0A patent/EP2994235B1/de active Active
- 2014-06-20 US US14/902,465 patent/US20160375442A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2015000723A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2015000723A2 (de) | 2015-01-08 |
BR112015032884A2 (pt) | 2017-07-25 |
WO2015000723A3 (de) | 2015-05-07 |
DE102013213005B3 (de) | 2014-10-23 |
EP2994235B1 (de) | 2017-08-02 |
US20160375442A1 (en) | 2016-12-29 |
ES2645715T3 (es) | 2017-12-07 |
BR112015032884B1 (pt) | 2021-11-16 |
CN105339089A (zh) | 2016-02-17 |
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