EP1973665B1 - Verfahren zur zerkleinerung sowie eine rollenmühle - Google Patents

Verfahren zur zerkleinerung sowie eine rollenmühle Download PDF

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Publication number
EP1973665B1
EP1973665B1 EP08708657A EP08708657A EP1973665B1 EP 1973665 B1 EP1973665 B1 EP 1973665B1 EP 08708657 A EP08708657 A EP 08708657A EP 08708657 A EP08708657 A EP 08708657A EP 1973665 B1 EP1973665 B1 EP 1973665B1
Authority
EP
European Patent Office
Prior art keywords
mill
drives
speed
roller
compensation control
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
EP08708657A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1973665A1 (de
Inventor
Markus Berger
Ludwig KÖNNING
Marco VÖLLINK
Franz-Josef Zurhove
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
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 Polysius AG filed Critical Polysius AG
Publication of EP1973665A1 publication Critical patent/EP1973665A1/de
Application granted granted Critical
Publication of EP1973665B1 publication Critical patent/EP1973665B1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C25/00—Control arrangements specially adapted for crushing or disintegrating

Definitions

  • the invention relates to a roller mill and to a method for comminuting grinding stock with a roller mill, which has a grinding table, at least one grinding roller and at least two drives for driving the roller mill, wherein a compensation control for the drives is performed.
  • the grinding table is usually driven in roller mills, which drives the grinding rollers on the grinding bed.
  • roller mills which drives the grinding rollers on the grinding bed.
  • the invention is therefore based on the object to improve the compensation control for the drives.
  • a roller mill which has a grinding table, at least one grinding roller and at least two drives for driving the roller mill.
  • a power compensation control is performed, wherein the power of the drives are controlled in a predetermined ratio to each other by controlling the speed of at least one drive.
  • At least two grinding rollers are driven via a respective drive.
  • the grinding table is driven only via the at least two grinding rollers and the material to be ground. But it is also conceivable that the grinding plate is assigned its own drive.
  • the control of the speed of the drives via frequency converter, which preferably operate with field-oriented control.
  • the power compensation control additionally comprises a regulation of the rotational speed of the grinding table, wherein preferably a predetermined speed of the grinding table is maintained.
  • the drawing shows a schematic representation of a roller mill with a power compensation control.
  • a roller mill 1 which has a grinding table 10, at least two grinding rollers 11, 12 and at least two drives 13, 14 for driving the two grinding rollers 11, 12.
  • Each drive comprises a motor 13a, 14a and a transmission 13b, 14b.
  • a plurality of grinding rollers in particular three, four or more grinding rollers can be provided.
  • the grinding table 10 is freely rotatable about an axis of rotation 10a, so that it is set in rotation only via the driven grinding rollers 11, 12 and the grinding material 3 located between the grinding roller and the grinding table. It would also be conceivable that the grinding table is assigned its own drive.
  • a power compensation control 2 wherein the power of the drives 13, 14 are regulated in a predetermined ratio to each other by controlling the speed of at least one drive.
  • identical drives 13, 14 are provided for the two identically designed grinding rollers 11, 12, so that the power balance control keeps the power of the two drives at the same level.
  • the grinding table could be driven at a lower or higher power than the grinding rollers.
  • the power balancing control 2 in the illustrated embodiment consists essentially of one of the drives 13, 14 associated frequency converter 20, 21, a power compensation regulator 22, a Mahltellerfacesensor 23 and a Mahltellertextiereregler 24th
  • the frequency converter 20, 21 are provided in a conventional manner with a field-oriented control. You get from the drives 13, 14 the current motor current or the motor voltage. From this, the power consumption of each drive is determined and a moving sum mean value is formed, which is weighted by a factor (with the same power of the drives equal to 0.5) and represents the target value of the drive. At almost constant Resistance torque depends this value essentially only on the speed of the respective drive.
  • a deviation between the drive actual and nominal drive power is applied to the power compensation regulator 22, which effects a power adjustment of the two drives 13, 14 by adjusting the rotational speed of one or both drives such that the power of the two drives in the predetermined ratio, in the present case at the same level.
  • the grinding table 10 rotates at a predetermined setpoint speed n soll .
  • the grinding table speed controller 24 communicates with the grinding table speed sensor 23 and continuously receives the actual value of the speed of the grinding table, which is compared with the setpoint n soll , from which the control deviation results. From this, the controller generates the set speed of the drives 13, 14 at a fixed assumed ratio.
  • the frequency converters 20, 21 have an internal speed controller and a revolving motor model, whereby the drive speed of the drives and the engine torque can be tapped.
  • the frequency converter must be able to read in and output control and status data at the latest every 5 ms, so that the function of the power compensation regulator is ensured.
  • the system is a cascade control, the individual levels are dynamically decoupled from each other and thus can be considered individually.
  • the advantage of the regulation described above is that with a power balancing control the power consumption of the Drives 13, 14 differ only slightly and even major changes in the system (translation jump) are very fast.
  • a further advantage is that it is possible to dispense almost completely with expensive and maintenance-intensive measuring technology, since the frequency converters used provide all relevant data except for the grinding table speed.
  • the control interventions can be performed almost without power, so that the overall efficiency is at the level of a regulated drive.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
EP08708657A 2007-02-07 2008-02-04 Verfahren zur zerkleinerung sowie eine rollenmühle Not-in-force EP1973665B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007006092A DE102007006092A1 (de) 2007-02-07 2007-02-07 Verfahren zur Zerkleinerung von Mahlgut mit einer Rollenmühle
PCT/EP2008/051354 WO2008095902A1 (de) 2007-02-07 2008-02-04 Verfahren zur zerkleinerung von mahlgut mit einer rollenmühle

Publications (2)

Publication Number Publication Date
EP1973665A1 EP1973665A1 (de) 2008-10-01
EP1973665B1 true EP1973665B1 (de) 2009-11-25

Family

ID=39233095

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08708657A Not-in-force EP1973665B1 (de) 2007-02-07 2008-02-04 Verfahren zur zerkleinerung sowie eine rollenmühle

Country Status (7)

Country Link
US (1) US8128011B2 (ru)
EP (1) EP1973665B1 (ru)
JP (1) JP5208970B2 (ru)
CN (1) CN101594939B (ru)
DE (2) DE102007006092A1 (ru)
DK (1) DK1973665T3 (ru)
WO (1) WO2008095902A1 (ru)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008015141A1 (de) * 2008-03-20 2009-11-05 Gebr. Pfeiffer Ag Wälzmühle
DE102008036784C5 (de) * 2008-08-07 2013-06-20 Thyssenkrupp Polysius Ag Rollenmühle und Verfahren zur Zerkleinerung von Mahlgut
DE102008039539B4 (de) * 2008-08-25 2010-08-26 Polysius Ag Rollenmühle
DE102009012353C5 (de) † 2009-03-09 2013-08-22 ThyssenKrupp Resource Technologies AG Rollenmühle
DE102010016011A1 (de) * 2010-03-18 2011-09-22 Polysius Ag Rollenmühle
FR2977170B1 (fr) * 2011-06-29 2013-08-09 Cie Engrenages Et Reducteurs Messian Durand Dispositif d'entrainement pour broyeur, et broyeur correspondant
DE102012106554A1 (de) 2012-07-19 2014-05-15 Thyssenkrupp Resource Technologies Gmbh Verfahren und Anlage zur Zerkleinerung von Mahlgut mit einer Rollenmühle
DE102013200578A1 (de) 2013-01-16 2014-07-17 Siemens Aktiengesellschaft Verfahren zur Antriebsregelung
CN103191827B (zh) * 2013-04-17 2016-04-20 北京便宜坊烤鸭集团有限公司 一种江米面生产设备及江米面生产方法
CN107774379A (zh) * 2017-11-22 2018-03-09 贵州金鑫铝矿有限公司 一种铝矾土研磨装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5219780U (ru) 1975-07-29 1977-02-12
JPS5228875A (en) 1975-07-29 1977-03-04 Nippon Kogaku Kk <Nikon> Mask
JPS58159854A (ja) * 1982-03-16 1983-09-22 株式会社神戸製鋼所 竪型ロ−ラミルのロ−ラ駆動方法及びその装置
DE3815218A1 (de) * 1988-05-04 1989-11-16 Loesche Gmbh Luftstrom-mahlanlage
US5050810A (en) * 1990-01-16 1991-09-24 Parham Robert L One-piece pulverizing roller
CH682809A5 (de) * 1990-12-12 1993-11-30 Buehler Ag Produktspeiseautomatik, Verfahren zur Steuerung der Vermahlung eines Müllereiwalzenstuhles.
JPH07328465A (ja) * 1994-06-01 1995-12-19 Mitsubishi Heavy Ind Ltd 竪形ローラミルの運転方法
JP3565380B2 (ja) 1996-02-06 2004-09-15 中国電力株式会社 ミル特性計測装置
DE19702854A1 (de) 1997-01-27 1998-07-30 Krupp Polysius Ag Verfahren und Rollenmühle zur Zerkleinerung von Mahlgut
FI116277B (fi) * 2003-09-26 2005-10-31 Metso Paper Inc Hakkuri- tai murskainlaitteisto, erityisesti lastuhakkuri
DE102006050205B4 (de) * 2006-10-25 2013-03-21 Gebr. Pfeiffer Ag Sicherheitssystem für Wälzmühlen
SE532429C2 (sv) * 2008-05-30 2010-01-19 Sandvik Intellectual Property Anordning och sätt att begränsa spinning i en gyratorisk kross

Also Published As

Publication number Publication date
US8128011B2 (en) 2012-03-06
CN101594939A (zh) 2009-12-02
JP2010517753A (ja) 2010-05-27
WO2008095902A1 (de) 2008-08-14
DE102007006092A1 (de) 2008-08-14
US20100059611A1 (en) 2010-03-11
DK1973665T3 (da) 2010-04-12
DE502008000208D1 (de) 2010-01-07
CN101594939B (zh) 2012-05-30
EP1973665A1 (de) 2008-10-01
JP5208970B2 (ja) 2013-06-12

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