EP0190241A1 - Dispositif de reglage de l'ecartement de mouture pour moulins a cylindres. - Google Patents

Dispositif de reglage de l'ecartement de mouture pour moulins a cylindres.

Info

Publication number
EP0190241A1
EP0190241A1 EP85903833A EP85903833A EP0190241A1 EP 0190241 A1 EP0190241 A1 EP 0190241A1 EP 85903833 A EP85903833 A EP 85903833A EP 85903833 A EP85903833 A EP 85903833A EP 0190241 A1 EP0190241 A1 EP 0190241A1
Authority
EP
European Patent Office
Prior art keywords
grinding
adjusting
structural unit
drive motor
grinding gap
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
EP85903833A
Other languages
German (de)
English (en)
Other versions
EP0190241B1 (fr
Inventor
Leendert Ketting
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.)
Buehler AG
Original Assignee
Buehler 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
Priority claimed from CH3744/84A external-priority patent/CH664506A5/de
Application filed by Buehler AG filed Critical Buehler AG
Priority to AT85903833T priority Critical patent/ATE38626T1/de
Publication of EP0190241A1 publication Critical patent/EP0190241A1/fr
Application granted granted Critical
Publication of EP0190241B1 publication Critical patent/EP0190241B1/fr
Expired legal-status Critical Current

Links

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

Definitions

  • the invention relates to a grinding gap adjustment device for milling roller mills, in which two grinding rollers, one of which is designed as a pivotable loose roller, as well as adjusting elements and a device for automatically adjusting the grinding gap via a remotely controllable drive motor are provided, the latter with the interposition of a clutch is coupled to the adjusting elements by means of an excessive amount.
  • grinding gap the distance between the grinding rollers (grinding gap) must also be adjustable with great accuracy for normal grinding operation.
  • the object of the invention is to find a particularly favorable solution for a sensible automation of the grinding gap setting while maintaining the possibility of manual intervention in milling roller mills.
  • the adjusting members form their own first closed structural unit which has a lever-translated adjusting part with a longer and a shorter lever arm and is arranged laterally in the area of the grinding rollers in that the drive motor and the clutch are designed as a second structural unit, which is mounted at a distance from the first structural unit, the adjusting forces derived from the drive motor acting on the longer lever arm of the adjusting part, and in that the adjusting members are additionally provided with a manual setting.
  • the device of the invention thus constitutes an addition to an "n-rolling mill, which can be added later at any time, such as when only part of the roll mills is to be provided a mill with an automatic transmission. Since a mill roller mill for the type of operation (processing floury goods) has previously been a very compact machine, the accessibility of the other elements is not made more difficult with the arrangement according to the invention of a second 2 c module at a distance from the pair of grinding rollers. If necessary, the roller mill can then even be operated automatically without manual adjustment of the adjusting elements.
  • the clutch is designed as an adjustable slip clutch, which enables an automatic grinding roller adjustment device according to predetermined setpoints, for example the distance between the grinding rollers, in an elegant manner.
  • the setting can be made here on the basis of a predefined program or g 5 setpoint schemes. Since faults are inevitable in practice, the slip clutch limits incorrect intervention. This can also prevent, for example, the grinding gap or pressure from being generated unintentionally undesirably high values could be set and the rolling mill or the roller bearings could be destroyed.
  • a first structural unit is provided on each of the bearing end sides of the grinding rollers, a second structural unit common to both bearing end sides, and further means for automatic parallel adjustment of the loose roller, the first structural unit being a slip-free overdrive by the second Unit is controllable.
  • the drive motor drives through the overdrive means, such as a chain, an adjusting spindle on the longer lever arm of the adjusting part, which is particularly preferably more than 3 times as long as the shorter lever arm is formed, engages and on which a hand adjusting wheel is attached, which is preferably provided with a display device in the form of a display clock.
  • the hand adjusting wheel is preferably provided with a display device or a position indicator, which in turn is preferably designed in the form of a display clock, which can be integrated directly in the handwheel as a dial gauge. In this way, the handwheel is carried accordingly for each automatic correction and the respective status is displayed on the handwheel.
  • the second structural unit is arranged in the region of the foot of the roller mill.
  • a further advantageous embodiment of the grinding gap adjusting device also consists in that a position indicator is provided which can be controlled by the overdrive means or by the adjusting elements.
  • a potentiometer for example, can preferably be used as such a position indicator.
  • the overdrive means advantageously transmit the adjusting force through a slipless overdrive, the position indicator being coupled directly via a chain either to the slipless overdrive or to the driven side of the clutch.
  • a toothed belt or chain or similar devices, which simultaneously move the position indicator, can preferably be used as a slip-free overdrive.
  • the position indicator which is preferably connected to a suitable position indicator, allows the exact position of both grinding rollers to be displayed and reported back at any time, in particular if the position indicator on the output side of the clutch, i.e. in direct positive connection with the adjusting elements.
  • a digital display and manual input keys are attached to the housing of the roller mill to control the drive motor by the operator for the position indicator. In this way, a suitable control of the drive motor by the responsible operator, for example by the top miller, can take place when the desired values of the roller position have been reached.
  • a likewise advantageous embodiment of the grinding gap adjustment device also consists in that a digital display and for controlling the drive motor.
  • Manual input buttons are attached to the housing of the roller mill;
  • a program-controlled computer is preferably also used for remote control of the drive motor, to which, again preferably, a common computer connected upstream of the computers of a plurality of roller mills is connected in the sense of a superordinate arrangement.
  • a preliminary circuit is not provided here, but rather a common computer with one or more setpoint memories is assigned to a plurality of roller mills.
  • the aforementioned measures can be used to directly control all the roller mills according to predetermined setpoint schemes, that is to say an actual control process.
  • the grinding gap adjustment device can also be part of an actual control device, the The grinding result or the grain fineness resulting from the grinding gap width is selected as the variable to be controlled and the grinding gap is controlled accordingly.
  • the output signals of a grinding pressure measuring device assigned to the grinding rollers and / or a pressure limit switch can preferably be applied to the input of the said computer, with either a pressure limit switch and / or a position limit switch for overload protection for such accidents caused by faulty ( Control commands for setting the grinding gap can be used, preferably at the input of the computer the output signals of a power demand measuring device assigned to the grinding rollers and / or a power consumption limit switch are applied. Likewise, preferably at the input of the computer but also the output signals of a roller distance measuring device assigned to the grinding rollers and / or a distance limit switch are applied.
  • Figure i shows a grinding gap adjustment device according to the invention
  • Figure 2 is a schematic front view of a roller mill according to Figure i, which has both motor and manual settings on both sides;
  • FIG. 3 shows another embodiment of the one shown in FIG. 2, but with manual adjustment on both sides and only one motor drive for parallel adjustment of the grinding rollers
  • FIG. 4 shows a schematic illustration of the motorized adjustment and computing means (computer) of a grinding gap adjustment device according to the invention.
  • FIG. 1 shows a milling roller mill with adjusting members as a first assembly i and with a controllable adjusting drive as a second assembly 2.
  • Two grinding rollers 41 and 42 are supported on a common carrier 3.
  • the loose roller 42 is pivotally attached to a fixed eccentric bolt 4, the. Engagement and disengagement is controlled by a lever 5 and a release cylinder 6.
  • the eccentric pin 4 is rotated and causes a horizontal displacement of the lower part of the pivotable bearing housing 7, so that the distance between the two grinding rollers can be roughly adjusted.
  • this device would be too imprecise for an exact setting; it is therefore only used to bring the grinding rollers 41, 42 into an engaged or disengaged position or into two fixed positions.
  • the actual fine adjustment takes place via an adjusting spindle 8, which directly rotates an adjusting arm 9 about a stationary pivot bearing 10 by rotation.
  • the upper, shorter lever arm of the adjusting arm 9 is non-positively connected to the pivotable bearing housing 7 via a pull rod 11.
  • the power transmission takes place via blades which are part of an overload spring fuse 12 on one side.
  • an adjustable counter hold button 13 and a pressure measuring device 14 with pressure display device 15 are provided on the pull rod 11.
  • the adjusting spindle 8 is held stationary by bearings 10 'and can now be actuated by means of a handwheel 16 which has a directly installed display clock 17 (FIG. 2), or else by motor means, namely an overdrive chain 18 and a geared motor or drive motor 19 .
  • the drive motor 19 is fastened to the roller mill 26 and is in direct connection with the overdrive chain 18 or the adjusting spindle 8 via a slip clutch 20 and a chain wheel 21.
  • the actuator 19 and the slip clutch 20 could also be placed in any other suitable location, e.g. on the outside of the rolling mill. However, the free inner space of the stand base proves to be the most suitable place for the placement of the adjustment drive with a view to optimizing the overall conditions.
  • Any suitable slip clutch can be used as the slip clutch 20, which can transmit minimum torques and can release the positive connection by slipping at a certain preselectable torque or can no longer transmit the adjusting force of the motor means beyond a certain torque.
  • the minimum torque should, however, only be chosen so large that it can be overcome with the handwheel 16 and a grinding gap setting can be effected by hand without rotating the geared motor 19.
  • a position indicator 22 is also directly connected to the exaggeration chain 18 via a chain 23 and a sprocket 24, as a result of which every movement of the exaggeration chain 19 is registered in the position indicator 23 and forwarded to the desired locations.
  • the motorized adjusting means only very few individual elements are required for the motorized adjusting means.
  • the largest element, the drive motor 19 and the clutch 20, can preferably be arranged in the area of a lower free recess in the roller mill stand 26, so that the second assembly group 2 or the automatic grinding gap setting can also be retrofitted at any time to correspondingly constructed older milling roller mills can be.
  • the assembly can also be designed in the form of a closed structural unit, so that subsequent installation is also facilitated and accelerated in this respect. Since mill roller mills are generally built in a double version, this is indicated in FIG. 1 with a dash-dotted center line 27. Each pair of rollers of the two halves of the roller mill can be equipped with or without such automatic adjustment means.
  • an assembly 1 and 2 is arranged on each end of the bearing.
  • a handwheel 16 with an integrated display clock 17 is also shown as a possibility on both sides. Both sides of the bearing have a drive motor iy, a position detector 22 and a UbertneD-K.et.ee 10. uamu l can be controlled on both sides of the roller distance via the motor 19 and the chain 18 or set by the operator via the handwheel 16.
  • a digital display 45 and manual input keys 46 could also be used. It would also be conceivable that the handwheel 16 and the manual input keys 45 are provided at the same time for a certain start-up period in order to familiarize the operating personnel. It is also possible to use the digital display 45 or the display clock 17 alone or both at the same time, which can be advantageous in certain applications. 0
  • FIG. 3 shows an alternative to the embodiment according to FIG. 2. Only the handwheel 16 and the display clock 17 are for an individual
  • correction left and right or provided twice In a further simplification, only 5 handwheel 16 can be used instead of the handwheel on the left and right.
  • a necessary correction on one side can be carried out using nuts 43, 44 (FIG. 1), so that only a handwheel 16 with a display clock 17 is required, for example for larger mills with a very rare change in the product mixture or with the same end products.
  • the setting of the grinding gap Q also takes place in FIG. 3 via a drive motor 19, the adjustment path being transmitted to the other bearing side in each case via a chain 39 or 40.
  • a parallel adjustment of the grinding rollers is carried out in this way via the corresponding automatic system.
  • FIG. 1 shows a drive 28 for the grinding rollers 41 and 42 (only in dash-dotted lines). It is also possible to provide an electrical power demand measuring and display device 29 in the drive system. For example, the electrical power consumption can be limited to lower and upper values and if the
  • roller gap monitoring can be used - Simple type of incorrect commands that would lead to mechanical destruction of at least parts of the rolling mill can be reliably prevented.
  • Such a device is shown again schematically in FIG. 4, supplemented with further control links.
  • all signals of a roller mill are coordinated and controlled by a computer 31, which can call up the required setpoints from a central computer 32 with memory 33.
  • the position indicator 22 is also equipped with a position limit switch 34, which can be set to the desired limit values, in order to thereby prevent incorrect setting by the automatic system.
  • the position limit switch 34 in the position shown has the advantage that incorrect manual adjustment can also be prevented since the handwheel and automatic adjustment result in a corresponding displacement of the overdrive chain 18 and the chain 23.
  • the position detector 22 can be connected to an input / output device 35 which receives or emits corresponding signals from the computer 31, corresponding to the digital display 45 and the manual input keys 46 in FIG. 2.
  • the Pressure measuring and display device 14, 15 are connected to the computer 31.
  • one or more collateral can be provided on the same rolling mill.
  • a computer 37 and the signal lines 38 are intended to indicate in FIG. 4 that the computer 32 with its memory 33 can control a plurality, possibly even all, of the roller mills in a mill and, if necessary, coordinate control functions.
  • the digital display outputs 45 display values in the same way of displaying the values as the display of the handwheel, for example values according to a time display on a clock (for example the handwheel is at 3:30 p.m., the digital display) shows: 15:30).

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

Dispositif de réglage de l'écartement de mouture pour moulins à cylindres comportant deux cylindres (41, 42) dans un boîtier, dont un est un cylindre rotatif à essieu déplaçable (42). Le moulin à cylindres comprend en outre des éléments de réglage (7-9, 11), de même qu'un dispositif d'ajustement automatique de l'écart de mouture par un mécanisme moteur télécommandé (19), ce dernier étant connecté aux éléments de réglage (7-9, 11) par des mécanismes d'entraînement à embrayage interposé (20). Les éléments de réglage (7-9, 11) forment une unité indépendante (1) latéralement disposée par rapport aux cylindres (41, 42) et ayant une partie de réglage (9) avec un rapport de leviers caractérisé par un bras plus long et un bras plus court de levier. En outre, le mécanisme moteur (19) et l'embrayage (20) forment une deuxième unité indépendante (2) située à une certaine distance de la première (1), les forces d'ajustement derivées du mécanisme moteur (19) s'appliquant sur le bras plus long (9') de levier de la partie de réglage (9). Les éléments de réglage (7-9, 11) sont également pourvus d'un dispositif d'ajustement manuel (8, 16).
EP85903833A 1984-08-03 1985-07-26 Dispositif de reglage de l'ecartement de mouture pour moulins a cylindres Expired EP0190241B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85903833T ATE38626T1 (de) 1984-08-03 1985-07-26 Mahlspaltverstellvorrichtung fuer muellereiwalzenstuehle.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH3744/84A CH664506A5 (de) 1984-08-03 1984-08-03 Mahlspaltverstellvorrichtung an einem muellereiwalzenstuhl.
CH3744/84 1984-08-03
DE3439834 1984-10-31
DE3439834 1984-10-31

Publications (2)

Publication Number Publication Date
EP0190241A1 true EP0190241A1 (fr) 1986-08-13
EP0190241B1 EP0190241B1 (fr) 1988-11-17

Family

ID=25693752

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85903833A Expired EP0190241B1 (fr) 1984-08-03 1985-07-26 Dispositif de reglage de l'ecartement de mouture pour moulins a cylindres

Country Status (7)

Country Link
US (1) US5154364A (fr)
EP (1) EP0190241B1 (fr)
KR (1) KR910003501B1 (fr)
AT (1) ATE38626T1 (fr)
DE (1) DE3566226D1 (fr)
RU (1) RU1820873C (fr)
WO (1) WO1986001128A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2098110A3 (fr) * 2008-03-04 2009-12-16 Deere & Company Assemblage de compresseur de pointeau

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GB2252517A (en) * 1991-02-07 1992-08-12 Smidth & Co As F L Roller press with torque counter balancing
DE4219886A1 (de) * 1992-06-17 1993-12-23 Krupp Polysius Ag Verfahren zum Betrieb einer Gutbett-Walzenmühle
DE9304855U1 (fr) * 1993-03-31 1993-06-17 Desaga, Hans, Dr.Med.Habil., 6149 Fuerth, De
DE4435935C3 (de) * 1994-10-07 2003-11-06 Rieter Werke Haendle Verfahren zum Einstellen des Walzenspaltes eines Walzwerks und Walzwerk
GB2293990A (en) * 1994-10-11 1996-04-17 Satake Uk Ltd A cereal milling machine
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US6055749A (en) * 1997-10-31 2000-05-02 Cronk, Jr.; Thomas J. Apparatus for padding underground conduits
US6029378A (en) * 1997-10-31 2000-02-29 Cronk, Jr.; Thomas J. Apparatus for padding underground conduits
ITMI980943A1 (it) * 1998-04-30 1999-10-30 Carle & Montanari Spa Procedimento e dispositivo per la premacinazione di materiale dolciario
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US6776366B2 (en) * 2002-10-02 2004-08-17 Martin Tschesche Drive assembly for dual coacting rollers
PL2103223T3 (pl) * 2008-03-18 2012-09-28 Kraft Foods R & D Inc Sposób sterowania procesem, w którym zmniejsza się wielkość cząstek materiału, maszyna do zmniejszania wielkości cząstek materiału i sposób kalibrowania takiej maszyny
CN101829617B (zh) * 2010-05-28 2011-12-07 国家粮食加工装备工程技术研究中心 磨粉机离合闸机构
US20150129698A1 (en) * 2011-04-01 2015-05-14 Tyler Olson Processor
US8851408B2 (en) * 2011-07-26 2014-10-07 John Bihn Grain crushing apparatuses
CN103691514A (zh) * 2013-12-25 2014-04-02 吴章荣 一种用于垃圾分类的破碎机
BR102015021252B1 (pt) * 2015-09-01 2019-10-15 Vale S/A Prensa de rolos para minérios e método para obtenção de máxima eficiência de uma prensa de rolos
CN106552691B (zh) * 2015-09-29 2020-04-17 中粮工程装备（张家口）有限公司 磨辊支撑结构和磨粉机
CN106552692B (zh) * 2015-09-29 2019-06-07 中粮工程装备（张家口）有限公司 磨辊轧距调节机构以及磨粉机
KR102110449B1 (ko) * 2019-09-03 2020-05-13 주식회사 다들림푸드 고춧가루 분쇄 장치
CN115501815B (zh) * 2022-09-27 2023-07-21 江苏丰尚智能科技有限公司 压辊环模间隙自适应调节装置的零位校准方法及装置
CN116474871B (zh) * 2023-05-05 2023-09-19 哈尔滨工业大学 一种可对研磨速率和力度进行调节的骨料研磨机

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EP2098110A3 (fr) * 2008-03-04 2009-12-16 Deere & Company Assemblage de compresseur de pointeau

Also Published As

Publication number Publication date
DE3566226D1 (en) 1988-12-22
EP0190241B1 (fr) 1988-11-17
US5154364A (en) 1992-10-13
ATE38626T1 (de) 1988-12-15
WO1986001128A1 (fr) 1986-02-27
KR860700217A (ko) 1986-08-01
KR910003501B1 (ko) 1991-06-03
RU1820873C (ru) 1993-06-07

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