EP0515596B1 - Dispositif d'alimentation automatique de produits et procede de commande d'un moulin a cylindre de meunerie - Google Patents

Dispositif d'alimentation automatique de produits et procede de commande d'un moulin a cylindre de meunerie Download PDF

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Publication number
EP0515596B1
EP0515596B1 EP91920198A EP91920198A EP0515596B1 EP 0515596 B1 EP0515596 B1 EP 0515596B1 EP 91920198 A EP91920198 A EP 91920198A EP 91920198 A EP91920198 A EP 91920198A EP 0515596 B1 EP0515596 B1 EP 0515596B1
Authority
EP
European Patent Office
Prior art keywords
product feed
signal
roller
feed system
analog signal
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 - Lifetime
Application number
EP91920198A
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German (de)
English (en)
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EP0515596A1 (fr
Inventor
René Hostettler
Ernst Maechler
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
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Buehler AG
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Filing date
Publication date
Application filed by Buehler AG filed Critical Buehler AG
Publication of EP0515596A1 publication Critical patent/EP0515596A1/fr
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Publication of EP0515596B1 publication Critical patent/EP0515596B1/fr
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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

Definitions

  • the invention relates to an automatic product feed for a milling roller mill with a mechanical sensor, a product feeding device with adjustable drive means for the feed rollers and a grinding roller engagement and disengagement, and a method for controlling the grinding of a milling roller mill.
  • the instantaneous setting of the amount of product flowing to the grinding rollers can basically be done in two ways, by regulating the speed of the feed rollers, or by regulating the metering gap between a metering slide and the feed roller, which is also referred to as segment adjustment.
  • the grinding is recognized as the heart of every mill. A number of parameters therefore influence the quality of the grinding work.
  • the regulation of the product feed to the grinding rollers and the trouble-free operation of the necessary elements are of particular importance.
  • the level of automation in a modern mill has already reached a remarkably high level.
  • Last but not least, in terms of quality assurance, a further increase in automation is required, at least to the extent that the parameters, which are already influenced by the device technology, can be used for even greater perfection, so that easier access is created through human intervention or the control of the process.
  • the object of the invention is now to at least partially alleviate these disadvantages, that the task can be solved with or without a superordinate control, and in particular the possibility of an immediate or later integration into a superordinate computer control is possible without the need for complex conversion work.
  • the device according to the invention is characterized in that it has a first mechanical signal transmitter for a digital signal and a second mechanical signal transmitter for an analog signal.
  • the new invention now allows a number of particularly preferred configurations.
  • the speed of the feed roller can be regulated via the analog signal and the engagement and disengagement can be controlled via the digital signal. This separation has the particular advantage that the practical setting of both the product feed control and the engagement and disengagement can be carried out independently. Each function is understandable and manageable.
  • the drive means or a drive motor for the feed roller can be regulated continuously by the analog signal via an electrical converter unit.
  • the mechanically movable sensor is preferably designed in a manner known per se as a probe (e.g. Christmas tree or perforated plate) which extends in the direction of the product stream to be moved and the signal transmitter as a contact element moved by the sensor.
  • the probe is a contact element as a signal generator for the analog signal, respectively. for the digital signal, preferably each assigned to an outer end side of the roller mill.
  • a proximity switch for converting the mechanical signal into an analog electrical signal is assigned to the signal generator for the analog signal, and a contact switch of an electrical valve can control the engagement and disengagement of the signal generator for the digital signal.
  • the signal transmitter for the analog signal is directly assigned a voltage converter unit and a current converter unit, or is integrated into the roller mill.
  • a frequency converter unit for regulating at least two or a plurality of feed rollers is preferably arranged at a distance from the roller mill.
  • the drive motor is flanged directly to a reversing direction of rotation, both for the feed roller and for a distribution roller arranged in parallel.
  • the reversing direction of rotation for this purpose has a reduction ratio of 1: 5 to 1:20, preferably about 1:10, the reduction and reversing gear being able to be formed from only three pairs of gearwheels.
  • the drive motor is assigned an adjusting gear and a control unit for the selection of different speed levels of the feed rollers, and the analog signal for regulating a product feed slide, and the engagement and disengagement are controlled via the digital signal.
  • the invention further relates to a new method for controlling the milling of a milling roller mill, which has an adjusting device and an engagement and disengagement device for the milling rollers and a product feed on the milling rollers controlled by a product feed sensor, which is characterized in that an analog sensor is used to provide a mechanical sensor Signal is generated, via which, depending on the quantity of product fed to the roller mill, is regulated, and furthermore at least one independently adjustable digital signal is generated, which either engages and disengages the grinding rollers or, depending on superordinate parameters (mill output, product quality), various basic settings of the Product feeding controls.
  • the new invention only brought about the knowledge that the generation of an analog and an independently adjustable digital signal allows the greatest possible freedom of choice for influencing the grinding and thus for the first time enables optimum grinding conditions for each application via the parameters involved.
  • each function can be guaranteed autonomously at the lowest possible level.
  • Two digital signals are very particularly preferably generated, a first digital signal from the mechanical sensor controlling the engagement and disengagement of the grinding rollers as a function of the product feed, and a second digital signal generated by an independent control unit determining basic settings of the product feed.
  • a certain number of revolutions for the feed roller can be preselected, or this can be adjusted at any time in the event of a product change.
  • basic settings can be selected for the segment or the metering gap or adjusted when changing products.
  • the product feed control takes place autonomously or automatically via the analog signal generated by the mechanical sensor.
  • control unit memory Contains computer means and can be used coordinated with a control signal for setting the grinding gap according to a previously defined program.
  • FIG. 1 shows a mill roller mill 1 which is normally built in duplicate, but only half of which is shown.
  • the product is fed in via a feed cylinder 2 in a product feed area 3, which in the lower part has a distribution roller 4 and a feed roller 5, which can be brought into the same direction by a gear 6 and drive means 7.
  • a mechanical sensor 8 which is directly connected in an articulated manner to a mechanical signal transmitter 9.
  • the sensor 8 is held in its highest position by a clamping field 10 without a product inlet.
  • the incoming product pushes the sensor 8 down, the signal generator 9 executing an analog movement or. a known one transmits analog signal to a converter unit 11.
  • a feed gap 12 is formed by a segment 13, with a segment adjustment device 14 being shown schematically.
  • the two basic options are shown by starting from the signal of the sensor 8 and a forming device (S / R) 15 via dashed lines 16, respectively. 16 'is either influenced on the speed of the feed roller 5 or on the position of the feed segment 13.
  • the material discharged in the feed roller 6 is fed to a pair of grinding rollers 18 in accordance with the arrow 17.
  • the pair of grinding rollers consists of a fixed roller 19 and a loose roller 20.
  • the loose roller 20 is assigned an engagement and disengagement device 21, which is controlled as a function of a control signal from the sensor 8 via a control line 22.
  • the loose roller 20 is also assigned a flour gap setting device 23, which optionally adjustable by hand or by means of a motor 24 and an electronic memory computer unit 25, depending on whether it is a function of the specific grinding work or the quality of the grinding material, or the material throughput through the roller mill 1.
  • FIG. 2 is a preferred embodiment of FIG. 1 with further details on the control and regulation elements, two signal generators are shown, a signal generator 9 for the analog signal, which by the movement or. the position of a cam plate 30 is generated and is transmitted via an analog signal converter 31 as an electrical analog voltage signal via a control line 32 to evaluation electronics 33.
  • a signal generator 9 for the analog signal which by the movement or. the position of a cam plate 30 is generated and is transmitted via an analog signal converter 31 as an electrical analog voltage signal via a control line 32 to evaluation electronics 33.
  • the evaluation electronics 33 are also transferred via a contact switch 35 and a control line 36, from which a digital signal is sent to the engagement and disengagement device 21 via a control line 37.
  • the analog signal is converted in a frequency converter 38 directly for a drive motor 39, via which the speed of the feed roller 5 is regulated.
  • FIG. 3 shows a further possible embodiment, in a somewhat simplified structure, in which case the analog signal from the analog signal converter 31 can be overridden via the digital signal for special operating positions.
  • the digital signal directly controls an electro-pneumatic valve 40, which controls two pneumatic cylinders 41 and 42 for engaging and disengaging the grinding rollers.
  • electro-pneumatic valve 40 which controls two pneumatic cylinders 41 and 42 for engaging and disengaging the grinding rollers.
  • various basic positions can be selected for the desired operating states by supplying compressed air.
  • FIG. 4 the processing of the analog signal, here converted by a rotary potentiometer, is shown in a more simplified form and shows the conversion of a mechanical into an electrical analog signal.
  • the tension spring 10 can be brought into different positions and, depending on the specific product quality and inlet conditions, can be introduced via a tension screw 51 under different tensile stresses.
  • FIG. 6 shows a further particularly advantageous embodiment for a complete self-regulation of the product feed via an analog signal and the possibility of the motor presetting of a feed roller speed stage, be it by manual input 70 via a control 71 74 in one of the speed levels 1, 2, 3, 4 or 5.
  • a control 71 74 in one of the speed levels 1, 2, 3, 4 or 5.
  • the digital signal is introduced via the controller according to external parameters.
  • an analog signal is sent from the mechanical signal transmitter 9 to the controller via an analog signal converter.
  • the actual feed control takes place via the type known in EP-PS 38 054, the pneumatic control of the metering segment or. of the metering gap 12.
  • the engagement and disengagement is controlled by a digital signal reproduced by the pneumatic analog signal, which is formed via a threshold value control valve 76.
  • FIG. 7 shows the two halves of a milling 8 roller mill.
  • Each sensor which is designed here as a vertical perforated plate is assigned to a vertical half, that is to say two pairs of rollers 19/20, 19 '/ 20' lying one above the other.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Disintegrating Or Milling (AREA)
  • Adjustment And Processing Of Grains (AREA)

Claims (17)

  1. Dispositif d'alimentation automatique de produits pour un moulin à 4 ou 8 cylindres de meunerie (1) équipé d'un capteur mécanique (8), d'un dispositif d'alimentation de produits avec organes d'entraînement réglables pour les cylindres d'alimentation (5) et d'organes pour l'embrayage et le débrayage des cylindres (21), caractérisé en ce qu'il présente un premier transmetteur mécanique de signaux (34) pour un signal numérique et un deuxième transmetteur mécanique de signaux (9) pour un signal analogique.
  2. Dispositif d'alimentation automatique de produits selon la revendicatiion 1, caractérisé en ce que le régime du cylindre d'alimentation (5) est réglable par le signal analogique et que l'embrayage et le débrayage (21) sont contrôlables par le signal numérique.
  3. Dispositif d'alimentation automatique de produits selon la revendicatiion 1, caractérisé en ce qu'un moteur d'entraînement (7, 39) pour le cylindre d'alimentation (5) est réglable en continu par le signal analogique via un convertisseur électronique (38).
  4. Dispositif d'alimentation automatique de produits selon la revendication 1, caractérisé en ce que le signal analogique est affecté au réglage d'un coulisseau d'alimentation de produits (13) et le signal numérique à l'embrayage et au débrayage (21).
  5. Dispositif d'alimentation automatique de produits selon la revendication 1, caractérisé en ce que le capteur (8) mécaniquement mobile connu en soi est conçu comme une tôle perforée qui s'étend sous la tension du ressort (10) dans le sens du courant du produit à déplacer et le transmetteur de signaux comme un élément de contact (9, 34) déplacé par le capteur.
  6. Dispositif d'alimentation automatique de produits selon la revendication 5, caractérisé en ce qu'à la sonde sont affectés deux éléments de contact (9 et 34) comme transmetteurs de signaux, un pour le signal analogique et un pour le signal numérique, situés de préférence à une extrémité extérieure du moulin à cylindres.
  7. Dispositif d'alimentation automatique de produits selon la revendication 1, caractérisé en ce qu'au transmetteur de signaux est affecté pour le signal analogique un détecteur de proximité (31) pour la conversion du signal mécanique en un signal électrique analogique.
  8. Dispositif d'alimentation automatique de produits selon la revendication 1, caractérisé en ce qu'au transmetteur de signaux est affecté pour le signal numérique un interrupteur de contact (35) d'une vanne électrique pour l'embrayage et le débrayage (21).
  9. Dispositif d'alimentation automatique de produits selon la revendication 1, caractérisé en ce qu'au transmetteur de signaux sont affectés directement pour le signal analogique un transformateur de tension (un potentiomètre par exemple) (31) et un transformateur de courant (38) qui sont intégrés dans le moulin à cylindres (1).
  10. Dispositif d'alimentation automatique de produits selon la revendication 9, caractérisé en ce que, à distance du moulin à cylindres (1), est affecté un convertisseur de fréquence (33) pour le réglage d'au moins deux cylindres d'alimentation ou d'un grand nombre de cylindres d'alimentation (5);
  11. Dispositif d'alimentation automatique de produits selon l'une des revendications 1 à 10, caractérisé en ce que le moteur d'entraînement (17) est raccordé par une bride directement sur un mécanisme de renversement du sens de rotation (6), pour le cylindre d'alimentation (5) et un cylindre de distribution disposé en parallèle (4).
  12. Dispositif d'alimentation automatique de produits selon la revendication 11, caractérisé en ce que le mécanisme de renversement du sens de rotation a un rapport d'engrenage de 1/10.
  13. Dispositif d'alimentation automatique de produits selon la revendication 11 ou 12, caractérisé en ce que le mécanisme de renversement (6) comprend trois engrenages.
  14. Dispositif d'alimentation automatique de produits selon les revendications 1 et 4, le signal analogique étant affecté pour le réglage d'un coulisseau d'alimentation de produits et l'embrayage et le débrayage étant contrôlables par le signal numérique, caractérisé en ce qu'au cylindre d'alimentation (5) sont affectés un moteur d'entraînement (7) et un appareil d'ajustage (73, 74) ainsi qu'une unité de commande (71, 75) pour le choix de divers niveaux de régime des cylindres d'alimentation (5).
  15. Dispositif d'alimentation automatique de produits selon l'une des revendications 1 à 4, caractérisé en ce qu'un signal électrique est acheminé par deux éléments de circuit numériques montés en série, et n'est utilisé qu'après comme signal analogique.
  16. Procédé de commande de mouture d'un moulin à 4 ou 8 cylindres de meunerie qui présente des appareils d'ajustage ainsi que des dispositifs d'embrayage et de débrayage pour les cylindres et une alimentation de produits sur les cylindres réglée par un capteur d'arrivée de produits, caractérisé en ce qu'un capteur mécanique génère un signal analogique qui régule l'alimentation des produits en fonction de la quantité de produit arrivée au moulin à cylindres, et en ce que en plus on génère au moins un signal numérique réglable et indépendant qui commande soit l'embrayage et le débrayage des cylindres soit l'interaction entre des paramètres prioritaires (rendement du moulin, qualité du produit) et divers réglages de base.
  17. Procédé selon la revendication 16, caractérisé en ce que deux ou plusieurs signaux numériques sont générés, un premier signal venant du capteur mécanique commandant l'embrayage et le débrayage des cylindres en fonction de l'arrivée du produit et un deuxième signal numérique ou plusieurs signaux numériques générés par une unité de commande indépendante commandant les réglages de base de l'alimentation des produits.
EP91920198A 1990-12-12 1991-12-05 Dispositif d'alimentation automatique de produits et procede de commande d'un moulin a cylindre de meunerie Expired - Lifetime EP0515596B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH3931/90A CH682809A5 (de) 1990-12-12 1990-12-12 Produktspeiseautomatik, Verfahren zur Steuerung der Vermahlung eines Müllereiwalzenstuhles.
CH3931/90 1990-12-12
PCT/CH1991/000248 WO1992010295A1 (fr) 1990-12-12 1991-12-05 Dispositif d'alimentation automatique de produits et procede de commande d'un moulin a cylindre de meunerie

Publications (2)

Publication Number Publication Date
EP0515596A1 EP0515596A1 (fr) 1992-12-02
EP0515596B1 true EP0515596B1 (fr) 1994-11-30

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EP91920198A Expired - Lifetime EP0515596B1 (fr) 1990-12-12 1991-12-05 Dispositif d'alimentation automatique de produits et procede de commande d'un moulin a cylindre de meunerie

Country Status (10)

Country Link
US (2) US5361995A (fr)
EP (1) EP0515596B1 (fr)
JP (1) JPH0832309B2 (fr)
KR (1) KR970001781B1 (fr)
AT (1) ATE114503T1 (fr)
CH (1) CH682809A5 (fr)
DE (1) DE59103700D1 (fr)
ES (1) ES2067959T3 (fr)
RU (1) RU2066564C1 (fr)
WO (1) WO1992010295A1 (fr)

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CH682809A5 (de) * 1990-12-12 1993-11-30 Buehler Ag Produktspeiseautomatik, Verfahren zur Steuerung der Vermahlung eines Müllereiwalzenstuhles.
US5509612A (en) * 1991-02-11 1996-04-23 Gerteis; Paul Process and device for the continuous shaping of particulate materials
DE4226182A1 (de) * 1992-08-07 1994-02-10 Kloeckner Humboldt Deutz Ag Anlage und Verfahren zur Druckbehandlung körnigen Gutes
US5865382A (en) * 1997-01-24 1999-02-02 Beloit Technologies, Inc. Protection system for a wood chip destructuring device
DE19722523A1 (de) * 1997-05-30 1998-12-03 Buehler Ag Verfahren und Vorrichtung zur hydraulisch-elektrischen Spaltregelung
DE19726551A1 (de) 1997-06-23 1998-12-24 Buehler Ag Speisesensorik
JP2003071314A (ja) * 2001-08-31 2003-03-11 Kobe Steel Ltd 水熱養生設備および水熱養生造粒物の製造方法
JP2004041984A (ja) * 2002-07-15 2004-02-12 Taiheiyo Cement Corp 平板状物の破砕システム
JP4599492B2 (ja) * 2003-12-09 2010-12-15 明治機械株式会社 穀物・種子・固形樹脂の製粉機
US20110104186A1 (en) 2004-06-24 2011-05-05 Nicholas Valiante Small molecule immunopotentiators and assays for their detection
DE102004052084B4 (de) * 2004-10-26 2016-10-27 Bühler AG Walzwerk
DE102007006092A1 (de) * 2007-02-07 2008-08-14 Polysius Ag Verfahren zur Zerkleinerung von Mahlgut mit einer Rollenmühle
KR101821088B1 (ko) * 2008-07-02 2018-01-22 뷔흘러 에이지 가루 및/또는 세몰리나를 만드는 장치 및 방법
DE102008036784C5 (de) * 2008-08-07 2013-06-20 Thyssenkrupp Polysius Ag Rollenmühle und Verfahren zur Zerkleinerung von Mahlgut
US8070081B2 (en) * 2009-05-14 2011-12-06 Wark Rickey E Pressure monitor for pulverizer
JP5108855B2 (ja) * 2009-10-23 2012-12-26 明治機械株式会社 穀物・種子・固形樹脂の製粉機
US8544774B1 (en) * 2012-04-20 2013-10-01 Metso Minerals Industries, Inc. Roller crusher, and method of protecting a roller crusher from uncrushable objects
JP6238044B2 (ja) * 2013-04-23 2017-11-29 株式会社サタケ 製粉用ロール機におけるストックレベル検出器
CN105214825B (zh) * 2015-10-27 2017-09-01 张荣斌 一种八辊式破碎机的自动控制系统及方法
CN105536943B (zh) * 2015-12-24 2018-04-10 山东理工大学 一种点连接式多仓管磨机胀肚检测装置及预胀肚调控方法
CN105562148B (zh) * 2016-01-20 2018-01-16 福建安井食品股份有限公司 速冻后结块食品的滚轮压散装置
CN107377092B (zh) * 2017-08-17 2019-03-26 中国电子科技集团公司第十八研究所 一种粉料的辊压进料装置
JP6876896B2 (ja) * 2017-11-06 2021-05-26 アイメックス株式会社 移動ロールの位置調整装置及び同装置を備えたロールミル
TR201810955A2 (tr) * 2018-07-30 2018-08-27 Alapala Makina Gida Sanayi Ve Ticaret Anonim Sirketi Bi̇r öğütme maki̇nesi̇

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CH655251A5 (de) * 1980-04-11 1986-04-15 Buehler Ag Geb Muellerei-walzenstuhl mit einer produkt-speiseregelvorrichtung sowie verfahren zum betrieb des muellerei-walzenstuhles.
WO1986005416A1 (fr) * 1985-03-15 1986-09-25 Gebrüder Bühler Ag Procede d'ajustement des cylindres broyeurs des moulins a cylindres d'une installation de mouture de cereales, installations de mouture de cereales utilisant ce procede
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Cited By (5)

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Publication number Priority date Publication date Assignee Title
EP3572152A1 (fr) * 2018-05-25 2019-11-27 Bühler AG Dispositif de dosage réparti pour un moulin à cylindres, moulin à cylindres doté d'un tel dispositif de dosage réparti, procédé de broyage de produit à broyer ainsi que moulin à cylindres doté d'une armoire de distribution dotée d'un dispositif de refroidissement
WO2019224399A1 (fr) * 2018-05-25 2019-11-28 Bühler AG Dispositif de dosage et de distribution pour un moulin à cylindres, moulin à cylindres comprenant un tel dispositif de dosage et de distribution, procédé pour le broyage de produit à broyer ainsi que moulin à cylindres comprenant une armoire de commande comprenant un refroidissement
RU2755504C1 (ru) * 2018-05-25 2021-09-16 Бюлер Аг Устройство распределения и дозирования для вальцовой мельницы, вальцовая мельница с таким устройством распределения и дозирования, способ измельчения измельчаемой массы и вальцовая мельница, содержащая коммутационный шкаф с системой охлаждения
US11185867B2 (en) 2018-05-25 2021-11-30 Bühler AG Distribution metering device for a roller mill, roller mill with such a distribution metering device, method for grinding grinding stock, and roller mill comprising a switching cabinet with a cooling system
US11865547B2 (en) 2018-05-25 2024-01-09 Bühler AG Distribution metering device for a roller mill, roller mill with such a distribution metering device, method for grinding grinding stock, and roller mill comprising a switching cabinet with a cooling system

Also Published As

Publication number Publication date
JPH05504721A (ja) 1993-07-22
KR970001781B1 (ko) 1997-02-15
DE59103700D1 (de) 1995-01-12
CH682809A5 (de) 1993-11-30
RU2066564C1 (ru) 1996-09-20
JPH0832309B2 (ja) 1996-03-29
ATE114503T1 (de) 1994-12-15
ES2067959T3 (es) 1995-04-01
WO1992010295A1 (fr) 1992-06-25
US5361995A (en) 1994-11-08
US5485965A (en) 1996-01-23
EP0515596A1 (fr) 1992-12-02

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