EP0492080A1 - Procédé et appareillage pour contrôler le fonctionnement d'un broyeur à rouleaux - Google Patents

Procédé et appareillage pour contrôler le fonctionnement d'un broyeur à rouleaux Download PDF

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Publication number
EP0492080A1
EP0492080A1 EP91118151A EP91118151A EP0492080A1 EP 0492080 A1 EP0492080 A1 EP 0492080A1 EP 91118151 A EP91118151 A EP 91118151A EP 91118151 A EP91118151 A EP 91118151A EP 0492080 A1 EP0492080 A1 EP 0492080A1
Authority
EP
European Patent Office
Prior art keywords
intervention
reaches
point
controlled variable
power consumption
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
Application number
EP91118151A
Other languages
German (de)
English (en)
Other versions
EP0492080B1 (fr
Inventor
Eberhard Wilhelm Dipl.-Ing. Neumann
Friedrich Vom Hofe
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
Krupp 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 Krupp Polysius AG filed Critical Krupp Polysius AG
Publication of EP0492080A1 publication Critical patent/EP0492080A1/fr
Application granted granted Critical
Publication of EP0492080B1 publication Critical patent/EP0492080B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/32—Adjusting, applying pressure to, or controlling the distance between, milling members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/286—Feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/005—Control arrangements
    • B30B11/006—Control arrangements for roller presses

Definitions

  • the invention relates to a method (according to the preamble of claims 1 and 2) and a device (according to the preamble of claims 8 and 9) for regulating the operation of a material bed roller mill, in particular for regulating the fill level of the feed hopper and the power consumption of the roller drive motors.
  • the invention is therefore based on the object of providing a method and a device for regulating the operation of a material bed roller mill which are characterized by a high stability of the control even when the grindability of the goods changes.
  • the control method according to the invention thus works without a fixed setpoint for the controlled variable, which can level off freely according to the properties of the ground material to the respectively optimal value. In this way, extremely stable control is achieved even when the grindability changes during operation.
  • the control concept according to the invention can be implemented with any freely programmable control.
  • a number of intervention points are defined within the fill level range from 0 to 100%, for example at intervals of 0.5%.
  • the manipulated variable i.e. the mass flow of at least one feed component of the material bed roller mill
  • this mass flow is reduced with increasing fill level and with falling Level increased.
  • a good bed roller mill of the type POLYCOM with a freely programmable control S5 (Siemens AG) was regulated for a throughput of 600 t / h and a fresh material quantity of 190 t / h in the fill level.
  • the amount of fresh product fluctuated by +/- 50%, whereas when regulating according to the method according to the invention only about +/- 5%.
  • the fresh material throughput averaged over a longer period of time increased from 170 t / h to 190 t / h in the process according to the invention.
  • the fill level automatically settled to a new value, at which the control again remained very stable and which can therefore be described as the optimal fill level (for the changed grindability of the material). If, on the other hand, external control interventions were attempted to keep the fill level at the original value when the grindability changed, there would be significantly greater fluctuations in the manipulated variable.
  • the change in the mass flow associated with an intervention point is only carried out after a predetermined, adjustable delay time (for example of 2 minutes), provided the fill level does not repeat this intervention point within the delay time with the opposite tendency reached. Whenever the level reaches the same point of intervention again within the delay time, the delay time that has already expired becomes reset to zero. In this way, the number of control interventions can be reduced to what is absolutely necessary.
  • a predetermined, adjustable delay time for example of 2 minutes
  • the outlet pressure was chosen so that a power consumption of 1800 kW was achieved for goods that were difficult to grind. If the grindability became better, more ground material was fed into the mill, the grinding gap increasing and the hydraulic pressure and the power consumption increasing. When the power consumption reached the highest point of engagement of 1850 kW, the hydraulic pressure was reduced until the power consumption had dropped to 1800 kW. This process may have been carried out several times in succession, because the better grindability of the material means that the power consumption has repeatedly increased to the highest point of intervention of 1850 kW despite the pressure being reduced.
  • the hydraulic pressure was increased until the second lowest intervention point of 1730 kW was reached. This could also happen more than once. If the controlled variable reached the lowest intervention point several times in succession, the control interventions triggered thereby and increasing the manipulated variable were also counted. Their number was limited according to the number of previous control interventions reducing the manipulated variable (the number of pressure increases was therefore limited to the number of previous pressure reductions, which is a safety measure against an excessive pressure increase).

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
EP91118151A 1990-12-21 1991-10-24 Procédé et appareillage pour contrôler le fonctionnement d'un broyeur à rouleaux Expired - Lifetime EP0492080B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4041316 1990-12-21
DE4041316A DE4041316A1 (de) 1990-12-21 1990-12-21 Verfahren und einrichtung zur regelung des betriebs einer gutbettwalzenmuehle

Publications (2)

Publication Number Publication Date
EP0492080A1 true EP0492080A1 (fr) 1992-07-01
EP0492080B1 EP0492080B1 (fr) 1995-08-09

Family

ID=6421114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91118151A Expired - Lifetime EP0492080B1 (fr) 1990-12-21 1991-10-24 Procédé et appareillage pour contrôler le fonctionnement d'un broyeur à rouleaux

Country Status (3)

Country Link
EP (1) EP0492080B1 (fr)
DE (2) DE4041316A1 (fr)
ES (1) ES2075296T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993006928A1 (fr) * 1991-10-11 1993-04-15 Satake Uk Limited Machine a moudre les cereales
WO2012152951A2 (fr) 2011-05-12 2012-11-15 Bühler AG Dispositif et procédé pour broyer des particules dans un matériau coulant
CN115178339A (zh) * 2022-04-11 2022-10-14 北京智冶互联科技有限公司 一种辊压操作自动控制方法、装置、电子设备及介质

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015012474B4 (de) 2015-09-29 2018-02-01 Hosokawa Alpine Aktiengesellschaft Presskraftregelung von Walzenpressen zur Kompaktierung von Kleinstmengen und Walzenpresse dafür

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512927A1 (fr) * 1980-01-28 1983-03-18 Merrick Scale Mfg Cy Appareil pour controler l'ecoulement du charbon a partir d'une soute a charbon a travers un conduit aboutissant a un alimenteur qui delivre le charbon a un broyeur
DE3407535A1 (de) * 1984-03-01 1985-09-05 Klöckner-Humboldt-Deutz AG, 5000 Köln Einrichtung zur selbsttaetigen regelung der durchsatzleistung bei der zweistufigen zerkleinerung sproeder materialien
GB2159306A (en) * 1984-05-22 1985-11-27 De Beers Ind Diamond Crusher gap setting
EP0163890A1 (fr) * 1984-05-10 1985-12-11 CARLE & MONTANARI S.p.A. Dispositif d'alimentation de contrôle du chocolat dans des broyeurs cylindriques à chocolat

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1244535B (de) * 1963-12-14 1967-07-13 Miag Muehlenbau Verfahren und Schalteinrichtung zum Regeln einer Muehle
US3468488A (en) * 1965-11-30 1969-09-23 Buehler Ag Geb Automatic control of feed material in a comminuting mill
DE3535406A1 (de) * 1985-10-03 1987-04-09 Krupp Polysius Ag Verfahren und anlage zur zerkleinerung von mahlgut
CH672998A5 (en) * 1986-04-24 1990-01-31 Buehler Ag Geb Feed automatic controller for milling roller seating - uses pneumatic servo system in prodn. and transmission of analogue amplified control signal governing rotational speed
DD268891A1 (de) * 1987-02-19 1989-06-14 Dessau Zementanlagenbau Veb Verfahren zur vor- bzw. feinzerkleinerung mineralischer rohstoffe in einer walzenmuehle
DE3934047C2 (de) * 1988-11-03 1996-08-29 Buehler Ag Conche
US4909449A (en) * 1989-03-10 1990-03-20 Etheridge Johnny E Primary crushing stage control system
DE9017817U1 (de) * 1989-06-24 1992-03-12 Lenz, August, 8710 Kitzingen Schrotmühle, insbesondere Naßschrotmühle für die Maischeherstellung bei der Biererzeugung
DE3922638A1 (de) * 1989-07-10 1991-01-17 Kloeckner Humboldt Deutz Ag Zweiwalzenmaschine wie z.b. walzenpresse insbesondere zur druckzerkleinerung koernigen gutes, und verfahren zum betrieb einer solchen walzenmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512927A1 (fr) * 1980-01-28 1983-03-18 Merrick Scale Mfg Cy Appareil pour controler l'ecoulement du charbon a partir d'une soute a charbon a travers un conduit aboutissant a un alimenteur qui delivre le charbon a un broyeur
DE3407535A1 (de) * 1984-03-01 1985-09-05 Klöckner-Humboldt-Deutz AG, 5000 Köln Einrichtung zur selbsttaetigen regelung der durchsatzleistung bei der zweistufigen zerkleinerung sproeder materialien
EP0163890A1 (fr) * 1984-05-10 1985-12-11 CARLE & MONTANARI S.p.A. Dispositif d'alimentation de contrôle du chocolat dans des broyeurs cylindriques à chocolat
GB2159306A (en) * 1984-05-22 1985-11-27 De Beers Ind Diamond Crusher gap setting

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993006928A1 (fr) * 1991-10-11 1993-04-15 Satake Uk Limited Machine a moudre les cereales
WO2012152951A2 (fr) 2011-05-12 2012-11-15 Bühler AG Dispositif et procédé pour broyer des particules dans un matériau coulant
US10159985B2 (en) 2011-05-12 2018-12-25 Bühler AG Device and method for comminuting particles in liquid material
CN115178339A (zh) * 2022-04-11 2022-10-14 北京智冶互联科技有限公司 一种辊压操作自动控制方法、装置、电子设备及介质

Also Published As

Publication number Publication date
DE4041316A1 (de) 1992-06-25
DE59106222D1 (de) 1995-09-14
EP0492080B1 (fr) 1995-08-09
ES2075296T3 (es) 1995-10-01

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