EP0190241B1 - 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 Download PDF

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Publication number
EP0190241B1
EP0190241B1 EP85903833A EP85903833A EP0190241B1 EP 0190241 B1 EP0190241 B1 EP 0190241B1 EP 85903833 A EP85903833 A EP 85903833A EP 85903833 A EP85903833 A EP 85903833A EP 0190241 B1 EP0190241 B1 EP 0190241B1
Authority
EP
European Patent Office
Prior art keywords
unit
drive motor
nip
adjusting apparatus
setting
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.)
Expired
Application number
EP85903833A
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German (de)
English (en)
Other versions
EP0190241A1 (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

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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

Definitions

  • the invention relates to a grinding gap adjustment device for milling roller mills with a housing arranged in: a) two grinding rollers, one of which is designed as a pivotable loose roller; b) arranged laterally to the grinding rollers and acting on these adjusting elements for setting the grinding gap to a desired value and c) actuating devices coupled to the adjusting elements with c.1) a remotely controllable drive motor for automatic grinding gap adjustment and c.2) manual adjustment.
  • grinding gap the distance between the grinding rollers (“grinding gap”) must also be adjustable with great accuracy for the normal grinding area.
  • the object of the invention is to find a particularly favorable solution for a combined automatic and manual adjustment of the adjustment device of a milling roller mill.
  • the adjusting members form their own, first closed structural unit which d.1) has a lever-translated adjusting part with a longer and a shorter lever arm and d.2) has the manual setting;
  • the drive motor is designed as a separate, second, connectable (29) structural unit;
  • the second unit is mounted at a distance from the first unit; and g) attack the adjustment forces derived from the drive motor via overdrive means on the longer lever arm.
  • the device according to the invention thus represents an addition to a rolling mill, which can be attached at any time later, for example if only a part of the roller mills of a mill is to be provided with an automatic system. Since a mill roller mill for the type of operation (processing floury goods) has previously been a very compact machine, the inventive arrangement of a second assembly at a distance from the pair of grinding rollers does not make it difficult to access the other elements. If necessary, the roller mill can even be operated without automatic control by manual adjustment of the adjustment elements.
  • the clutch is designed as an adjustable slip clutch, which is an elegant way an automatic grinding roller adjustment device according to predetermined setpoints, eg. B, the distance between the grinding rollers.
  • the setting can be made here on the basis of a predetermined program or setpoint scheme Since faults are inevitable in practice, the slip clutch limits incorrect intervention. This can also prevent z. B. the grinding gap or pressure unintentionally set to undesirably high values 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 furthermore means for automatic parallel adjustment of the loose roller, the first structural unit being a slip-free overdrive by the second Unit is controllable.
  • a further advantageous embodiment of the invention with regard to ease of use also consists in the fact that the drive motor drives an adjusting spindle through the overdrive means, for example a chain, which is formed 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, attacks 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 adjustment device also consists in that a position detector is provided which can be controlled by the overdrive means or by the adjustment elements.
  • a position indicator for. B. use a potentiometer.
  • the overdrive means 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 a 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, especially if the position indicator on the output side of the clutch, i. H. 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. This enables the operator responsible, for example the head miller, to appropriately control the drive motor when the desired roller position values have been reached.
  • Another advantageous embodiment of the grinding gap adjustment device further consists in that a digital display and manual input keys are attached to the housing of the roller mill to control the drive motor; a program-controlled computer is preferably also used for remote control of the drive motor, to which, in turn, preferably, a common computer connected upstream of the computers of a plurality of roller mills is connected in the sense of a superordinate order.
  • 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 roller mills according to predetermined setpoint value schemes, that is to say an actual control process.
  • the grinding gap adjustment device can also be part of an actual control device, the grinding result or the grain fineness resulting from the grinding gap width being selected as the size to be controlled and controlled according to the grinding gap.
  • the output signals of a grinding pressure measuring device assigned to the grinding rollers and / or a pressure limit switch can be applied, optionally either a pressure limit switch and / or a position limit switch for overload protection for such accidents caused by faulty control commands for the setting of the Grinding gap can be triggered, can be used.
  • the output signals of a power demand measuring device assigned to the grinding rollers and / or a power consumption limit switch are preferably applied to the input of the computer.
  • the output signals of a roller distance measuring device assigned to the grinding rollers and / or of a distance limit switch can also be applied to the input of the computer.
  • FIG. 1 shows a mill roller mill with adjusting members as a first assembly 1 and with a controllable adjustment drive as a second assembly 2.
  • Two grinding rollers 41 and 42 are supported on a common carrier 3.
  • the idler roller 42 is pivotally attached to a stationary eccentric bolt 4, the engagement and disengagement being controlled by a lever 5 and a disengagement cylinder 6. Due to the pivoting movement of the lever 5, 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 fixed pivot bearing 10.
  • the upper, shorter lever arm 9 "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 cutting edges, which are part of an overload spring lock 12 on one side.
  • the pull rod 11 is on the opposite side an adjustable counter switch button 13 and a pressure measuring device 14 with pressure display device 15.
  • a correction can be made on the respectively required side by means of adjusting screws 43, 44.
  • the adjusting spindle 8 is held in place by bearings 10 'and can now be operated via a handwheel 16, which has a directly installed display clock 17 (FIG.
  • the adjusting motor 19 and the slip clutch 20 could also be located at any other suitable location, e.g. B. outside on 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 selected so large that it can be overcome with the handwheel 16 and a grinding gap setting can be effected by hand without turning 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 18 is registered in the position indicator 22 and forwarded to the desired locations.
  • 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 2 or the automatic grinding gap setting can also be retrofitted at any time to correspondingly constructed older milling roller mills.
  • 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 each have a drive motor 19, a position indicator 22 and an overdrive chain 18. The roller distance can thus be controlled on both sides of the bearing by 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 for the digital display 45 or the display clock 17 to be used alone or in each case use both at the same time, which can be an advantage in certain applications.
  • FIG. 3 shows an alternative to the embodiment according to FIG. 2.
  • Only the handwheel 16 and the display clock 17 are provided for an individual correction on the left and right or twice.
  • only one 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 always the same end products.
  • the setting of the grinding gap is also carried out 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.
  • 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 measurement and display device 29 in the drive system. So z. B. the electrical power consumption is limited to lower and upper values and if the preselected range is exceeded z. B. disengagement of the grinding rollers can be caused.
  • Such a device is shown again schematically in FIG. 4, supplemented with further control links. 4, 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 in the illustration according to FIG. 4 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 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 indicator 22, like the adjustment motor 19, 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 measurement can - 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 (e.g. the handwheel is at 3:30 p.m., the digital display shows to: 15.30).
  • a great advantage is also shown in the fact that the empirical values of non-automated or non-remotely controllable roller mills are compared and can be used to set up or improve corresponding control programs.

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

Claims (10)

1. Système de réglage de l'écartement de mouture pour moulins à cylindres, comprenant disposés dans un carter:
a) deux cylindres à mouture (41, 42), dont l'un est constitué par un cylindre mobile (42) orientable,
b) des organes de réglage (7 à 9, 11), qui sont disposés latéralement aux cylindres de mouture (41, 42) et qui coopèrent avec ceux-ci pour régler l'écartement de mouture à une valeur souhaitée et
c) des dispositifs d'actionnement qui sont accouplés aux organes de réglage (7 à 9, 11), et comportant: u __ _ _
c1) un moteur d'entraînement (19) commanda- ble à distance, pour le réglage automatique de l'écartement de mouture et
c2) un réglage manuel (8, 16), caractérisé en ce que,
d) les organes de réglage (7 à 9, 11) forment une première unité constructive (1) propre, qui comprend
d1) une partie de réglage (9) à transmission par levier, avec un bras de levier long (9') et un bras de levier court (9") et
d2) le réglage manuel (8,16),
e) le moteur d'entraînement (19) est constitué par une deuxième unité constructive (2) propre, fermée et accouplable (20),
f) la deuxième unité constructive (2) étant disposée à distance de la première unité constructive (1) et
g) les forces de réglage dérivées du moteur d'entraînement attaquant le bras de levier long (9'), par des moyens de transmission (18,30).
2. Système de réglage de l'écartement de mouture selon la revendication 1, caractérisé en ce que l'accouplement (20) est constitué par un accouplement à friction réglable.
3. Dispositif de réglage de l'écartement de mouture selon la revendication 1 ou 2, caractérisé en ce qu'en passant par le moyen de transmission, le moteur d'entraînement (19) entraîne une tige (8), qui attaque le bras de levier (9') long de la partie de réglage (9) et à qui est adjoint un volant de réglage à main (16), qui est avantageusement pourvu d'un dispositif d'indication (17), sous la forme d'un cadran indicateur.
4. Dispositif de réglage de l'écartement de mouture selon l'une des revendications 1 à 3, caractérisé en ce que la deuxième unité constructive (2) est disposée dans la zone du pied de l'appareil à cylindres.
5. Dispositif de réglage de l'écartement de mouture selon l'une des revendications 1 à 4, caractérisé en ce qu'une première (1) et une deuxième unités constructives (2) sont chacune disposées sur les deux côtés d'extrémité de palier des cylindres à mouture (41, 42).
5. Dispositif de réglage de l'écartement de mouture selon l'une des revendications 1 à 3, caractérisé en ce que sont prévues une première unité constructive (1) et en outre une deuxième unité constructive (2), qui est prévue en commun pour les deux côtés d'extrémité de palier, ainsi qu'en outre des moyens (39, 40), pour le réglage parallèle automatique du cylindre mobile (42), la première unité constructive (1) étant en outre com- mandable par une transmission sans frottement (39), à travers la deuxième unité constructive (2).
7. Dispositif de réglage de l'écartement de mouture selon l'une des revendications 1 à 5, caractérisé en ce que les moyens de transmission (39) agissent sans frottement et qu'un transmetteur de position (22) est directement accouplé par une chaîne (23), soit à la transmission sans frottement (39), soit au côté entraîné de l'accouplement (20).
8. Dispositif de réglage de l'écartement de mouture selon la revendication 7, caractérisé en ce qu'un indicateur numérique (15), ainsi que des boutons d'entrée manuels (46) sont adjoints sur le carter de l'appareil à cylindres (26), pour la commande du moteur d'entraînement (19).
9. Dispositif de réglage de l'écartement de mouture selon l'une des revendications 1 à 8, caractérisé en ce qu'un ordinateur (31) commandé par programme est prévu pour la commande à distance du moteur d'entraînement (19), ledit ordinateur pouvant commander simultanément les moteurs d'entraînement de plusieurs appareils à cylindres.
10. Dispositif de réglage de l'écartement de mouture selon la revendication 9, caractérisé en ce que les signaux de sortie d'un appareil de mesure d'écartement de mouture (30) affecté aux cylindres de mouture et/ou d'un interrupteur de valeur limite d'écartement sont appliqués à l'entrée de l'ordinateur (31).
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
CH3744/84 1984-08-03
CH3744/84A CH664506A5 (de) 1984-08-03 1984-08-03 Mahlspaltverstellvorrichtung an einem muellereiwalzenstuhl.
DE3439834 1984-10-31
DE3439834 1984-10-31

Publications (2)

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

Family

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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)

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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
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CN103691514A (zh) * 2013-12-25 2014-04-02 吴章荣 一种用于垃圾分类的破碎机
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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
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
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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Also Published As

Publication number Publication date
DE3566226D1 (en) 1988-12-22
US5154364A (en) 1992-10-13
WO1986001128A1 (fr) 1986-02-27
KR910003501B1 (ko) 1991-06-03
ATE38626T1 (de) 1988-12-15
KR860700217A (ko) 1986-08-01
RU1820873C (ru) 1993-06-07
EP0190241A1 (fr) 1986-08-13

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