EP0391096B2 - Procédé de réglage automatique de la fente de broyage, déterminant la granulométrie, d'une machine de broyage et dispositif pour la mise en oeuvre du procédé - Google Patents

Procédé de réglage automatique de la fente de broyage, déterminant la granulométrie, d'une machine de broyage et dispositif pour la mise en oeuvre du procédé Download PDF

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Publication number
EP0391096B2
EP0391096B2 EP90104795A EP90104795A EP0391096B2 EP 0391096 B2 EP0391096 B2 EP 0391096B2 EP 90104795 A EP90104795 A EP 90104795A EP 90104795 A EP90104795 A EP 90104795A EP 0391096 B2 EP0391096 B2 EP 0391096B2
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EP
European Patent Office
Prior art keywords
impact
signal
rotor
movement
impact apron
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
EP90104795A
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German (de)
English (en)
Other versions
EP0391096A3 (fr
EP0391096A2 (fr
EP0391096B1 (fr
Inventor
Klaus-Peter Seiffert
Hiep Phan Hung
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.)
Noell Service und Maschinentechnik GmbH
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Noell Service und Maschinentechnik GmbH
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Application filed by Noell Service und Maschinentechnik GmbH filed Critical Noell Service und Maschinentechnik GmbH
Priority to AT90104795T priority Critical patent/ATE98524T1/de
Publication of EP0391096A2 publication Critical patent/EP0391096A2/fr
Publication of EP0391096A3 publication Critical patent/EP0391096A3/fr
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Publication of EP0391096B1 publication Critical patent/EP0391096B1/fr
Publication of EP0391096B2 publication Critical patent/EP0391096B2/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
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/02—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft
    • B02C13/06—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor
    • B02C13/09—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor and throwing the material against an anvil or impact plate
    • B02C13/095—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor and throwing the material against an anvil or impact plate with an adjustable anvil or impact plate

Definitions

  • the invention relates to a method for automatic Setting the grain structure of the comminuted material determining grinding gap one Impact grinder or an impact crusher.
  • This Crushers have one with striking organs, especially blow bars provided rotor and as Counter tools so-called impact mechanisms and if necessary in addition also grinding tracks that are in operation with the Blow bars form a grinding gap next to the rotor speed is decisive for the degree of comminution.
  • This grinding gap is due to both wear Blow bars as well as the impact units and the grinding tracks gradually increased in size during operation so that the generated Product becomes coarser.
  • the necessary circuits switching on the actuator for the impact system, reversal of movement after signaling through a microphone when touched, switched off of the actuator after the desired long return movement of the impact system) were made by hand.
  • the invention is based on the objects, this known Process so that these human Shortcomings are eliminated and that Adjustment of the impact mechanism can happen automatically. It clears the way for an impact mill that from switching on your drive motor and starting it up the feed device for the comminuted material can be operated completely automatically.
  • Signal a) ensures that the impact mill is actually free from comminuted material, through the signal b) that the impact mill rotor actually rotates.
  • the modified signal c) ensures that the reversal of movement actually from the repetitive sound is controlled by striking the blow bars is generated against the impact mechanism and not by similar noises, which are caused by about Material feed stones falling into the impact mill or other coincidences.
  • An advantageous embodiment of the invention Procedure results when the movement of the Impact mechanism on the rotor to when a first occurs, from a sub-signal originating from a hard noise immediately is stopped and resumed if there are no more Partial signals follow, and that the movement is reversed will when a certain strength and length or a certain minimum number of partial signals in a time unit the computer the mutual touch of Displays shredding tools.
  • the adjustment method according to the invention for the impact device an impact mill enables one completely automatic operation of the impact mill when the computer a program (software) is assigned to the material to be shredded is coordinated. It determines in at what intervals a new adjustment of the impact mechanism takes place and it causes the material feed in each case stopped before and then started again is set.
  • the comminuted material is relatively soft, so that the wear is very low, it may be enough if at the start of work, before the material to be crushed is given up is, the impact mechanism setting according to the invention takes place and no correction needed during the day is.
  • the computer by means of it assigned interchangeable or influenceable program the distance of the impact device to the rotor according to a desired grain structure determined and accordingly an adjustment of the impact mechanism (the grinding gap) automatically. This allows the grain structure of the shredded goods can be changed particularly easily.
  • the signals b) and c) from a common one Microphone derived by the outgoing from the microphone Signal after amplification divided into two channels becomes.
  • the computer is for everyone Setting the grinding gap the distance traveled of the adjustable impact mechanism saves and compares with pre-programmed values and with the help of the program entered into it Wear rate or state of wear, the rest Operating time or the need to change the Shredding tools that shred the produced amount Good per shredding tool kit and the like Displays data to the operating personnel or into one parent, calculator there. This makes it a fully automatic Operation of the impact mill possible the only by changing worn out shredding tools by hand or by any other repair work is interrupted.
  • the impact mechanism is driven in the sense of an approach to the rotor in progress set, the elastic intermediate member is from Drive energized. Then dissolves, e.g. B. as a result of occurring in the crushing work Shocks, the deadlock, so the impact under the action of the tensioned pontic hurled against the rotor that it was in the impact area the blow bars gets what destruction at the impact mill.
  • an additional Intervention in the above marked Procedure provided by the drive of the impact system is stopped when moving towards the rotor if that elastic intermediate member compressed from the drive side becomes.
  • the Computer through the program or after a warning signal one or more times also by hand control
  • the impact mechanism can be moved back and forth, until readjustment as a result of the jamming being released of the impact mechanism to the rotor.
  • the elastic intermediate member can in a known manner (DE-A-35 25 101) but also by a pneumatic Be formed spring, then the warning signal by the when the air cushion is compressed by the Pressure increase triggered on the drive side becomes.
  • a pressure gauge in the like Context is part of DE-A-35 25 101, Fig. 2 21 known, but it serves in contrast to the present Use to do this, the pressure of the elastic Maintain pontic.
  • the impact mechanism with the help a microphone provided on the impact mill housing by a drive unit to the desired distance is adjustable to the rotor, according to the invention is used Facility through which the microphone Signal amplified and then distributed over two channels, of which the signal of one channel is transmitted via a Signal decoupler with a low trigger threshold and that Signal of the other channel via a signal decoupler is fed into a computer with a high trigger threshold, which is programmed so that - provided that the Low trigger threshold overcoming signal reached him - after receiving one from switching off the material feed of the impact mill, delayed Signals the drive unit of the impact system in the sense switches on an approach of the impact mechanism to the rotor, this movement reverses as soon as the high one Signal crossing the trigger threshold in multiple sequences reached, according to a program entered into it the return movement stops and the material feed again starts.
  • the signal decouplers that represent the trigger thresholds retriggerable timers, which convert the frequency signals into high signals and down a constant high signal to the minimum frequency Give calculator.
  • the impact mill shown in Fig. 1 has a housing 1 on, in which a rotor 2 by a horizontal Axis 3 is rotatably mounted. It is with four blow bars 4 provided. Above the rotor 2 is in the housing 1 an impact mechanism 5 is pivotally mounted about an axis 6. It is on the side facing the rotor with wear plates 7 armored. Its lowest wear plate 7a forms with that of the outer edges of the blow bars 4 imaginary cylindrical surface described in circulation 8 a grinding gap 9 which, depending on the pivoting position of the Impact unit 5 is more or less tight. The panning the impact mechanism 5 takes place, as also shown in FIG.
  • a microphone 18 is provided, which the recorded noise of the impact mill in electrical Converts signals.
  • these signals pass through a preamplifier 19 and an amplifier 20 and are then in two channels 21, 22 passed to two signal decouplers 23, 24 with different settings Trigger thresholds.
  • the signal decoupler 23 has a relatively low threshold that the at When the impact mill is idling, the resulting noise lets through.
  • the corresponding signal is in a retriggerable Time switch 25 in an upcoming time High signal processed, which reaches the computer 27.
  • the signal decoupler 24 has a high threshold and therefore only lets through hard signals such as z. B. from the striking of the blow bars 4 against the impact mechanism 5 originate, and then via a retriggerable Timer 26 also as a high signal to the computer 27 arrive.
  • the computer is still under the influence of inductive Proximity switch 28, the position of the Impact system depends and the basis for the dimensioning that of the computer about the respective needs adapted to the shredding work, not shown Program (software) caused via a geared motor 10 adjustments of the impact mechanism to the rotor 2 forms.
  • Program software
  • the computer also switches according to the Program the feed device for the shredded Well off and on again, with the receipt for switching off with a time delay with contactors provided control cabinet 29 takes place. Through in that Control cabinet 29 provided organs can be more Interventions in the operation of the computer 27 by hand be made, unless this by the Computer-assigned program already done.
  • the calculator 27 is also assigned as a proximity switch trained switching element 15, which ensures that the impact mechanism 5 can also be adjusted.
  • the now following adjustment process of the impact mechanism 5 exists from two phases.
  • the impact system slowly approached the rotor 2 by the electric motor 10. Is it so close to the rotor that the blow bars 4 against the foremost wear plate 7a of the impact mechanism beat, so arise at regular intervals (four impacts per rotor revolution) hard impact noises, which are picked up by the microphone 18 and as strong signals be passed on, which are suitable, the threshold the signal decoupler 24 to overcome and as a corresponding High signals get to the computer 27.
  • the retriggerable Timer 26 ensures that the Computer only reacts to these signals if one certain minimum number per time unit of these impact noise signals occurs and thus correctly identified is that it is striking the Blow bars against the impact mechanism and not around from others Causes the resulting noise. There are the retriggerable timer has a constant high signal to the computer.
  • the computer can, for. B. by means of a pulse counter 17, 28 in the actuator 10 of the impact mechanism 5 is installed, the number of for moving the Impact mechanism on the rotor 2, 4 required revolutions of a gear part and then - from this Number starting from zero of the impact mechanism - the gearbox turn back a number of revolutions that the desired new distance of the impact device from the rotor, thus corresponds to the desired gap width 9.
  • the computer can, for. B. by means of a pulse counter 17, 28 in the actuator 10 of the impact mechanism 5 is installed, the number of for moving the Impact mechanism on the rotor 2, 4 required revolutions of a gear part and then - from this Number starting from zero of the impact mechanism - the gearbox turn back a number of revolutions that the desired new distance of the impact device from the rotor, thus corresponds to the desired gap width 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Disintegrating Or Milling (AREA)
  • Crushing And Grinding (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Claims (9)

  1. Procédé pour régler automatiquement l'intervalle de broyage (9), qui détermine la structure des particules du produit broyé, dans un moulin à chocs, celui-ci comprenant un rotor (2) muni de battoirs (4) et au moins un écran de chocs (5, 7) ou similaire associé au rotor, l'écran de chocs pouvant être déplacé par rapport au rotor (2) et formant avec celui-ci l'intervalle de broyage (9), procédé dans lequel, pour éviter des modifications sensibles de la structure des particules du produit broyé, on déplace à des intervalles dans le temps l'écran de chocs (5, 7) en direction du rotor (2) au moyen d'un entraínement (10, 11, 12, 14) lorsqu'un signal se produit après la coupure de l'alimentation en matériau, signal qui provient d'un microphone (18) placé sur le boítier (1) du moulin à chocs ainsi vidé et qui correspond aux bruits de fonctionnement d'ensemble, on continue ce déplacement jusqu'au premier contact avec les battoirs (4) du rotor (2) de façon qu'un signal partant du microphon (18) se produit, signal qui provient des bruits de percussion résultant du contact des battoirs (4) avec l'écran de choc (5, 7), et, après reconnaissance de ces bruits, on déclenche l' inversion du mouvement de l'écran de chocs (5, 7), inversion qu'on arrête sur la base d'une course déterminée, procédé caractérisé en ce que la commande du déplacement de l'écran de chocs (5, 7) (début du déplacement d'approche, instant de l'inversion, fin du déplacement de recul) se produit automatiquement au moyen d'un calculateur (ordinateur) (27) qui met en route l'entraínement (10, 11, 12, 14) et déplace ainsi l'écran de chocs (5, 7) en direction du rotor (2) lorsque
    a) il est atteint par un signal, produit par la coupure de l'alimentation en matériau, qui est fourni au calculateur (27) avec un retard tel que le moulin à chocs tourne à vide lorsqu'il atteint le calculateur et
    b) il est atteint par un signal qui part d'un microphone (18) prévu sur le boítier (1) du moulin à chocs et qui provient des bruits de fonctionnement d'ensemble du moulin à chocs,
    et ledit calculateur inverse le déplacement de l'écran de chocs (5, 7) lorsque
    c) il est atteint par un signal qui part d'un microphone (18) prévu sur le boítier (1) du moulin à chocs et, grâce au filtrage des bruits de fonctionnement d'ensemble, provient des bruits de percussion qui se produisent lors du contact des battoirs (4) avec l'écran de chocs (5, 7),
    et il arrête le déplacement d'inversion de l'écran de chocs (5, 7) après une course déterminée calculée depuis la position d'inversion.
  2. Procédé selon la revendication 1, caractérisé en ce que le déplacement de l'écran de chocs (5, 7) en direction du rotor (2) est immédiatement arrêté à l'apparition d'un premier signal partiel provenant d'un bruit de percussion et il est poursuivi lorsque aucun signal partiel ne suit, et en ce que le déplacement est inversé lorsque des signaux partiels d'une amplitude et d'un longueur données ou un nombre minimum de signaux partiels au cours d'une unité de temps indiquent au calculateur (27) le contact mutuel des outils de broyage, c'est-à-dire des battoirs (4) avec la plaque d'usure inférieure (7a) de l'écran de choc (5, 7).
  3. Procédé selon la revendication 1, caractérisé en ce que le calculateur (27) détermine au moyen d'un programme (software) interchangeable ou influencable et chargé dans le calculateur, spécifique pour le produit à broyer, les intervalles de temps dans lesquels se produit un nouveau réglage de l'écran de chocs (5, 7) et il assure que l'alimentation de matériau soit à chaque fois arrêtée et remise en route ensuite.
  4. Procédé selon la revendication 1, caractérisé en ce que le calculateur (27) détermine au moyen d'un programme interchangeable ou influençable et chargé dans le calculateur la distance entre l'écran de chocs (5, 7) et le rotor (2) en fonction d'une structure de particules désirée et effectue automatiquement de manière correspondante un réglage de l'écran de chocs (5, 7) (de l'intervalle de broyage (9)).
  5. Procédé selon la revendication 1, caractérisé en ce que les signaux b et c sont dérivés d'un seul et même microphone (18) en répartissant ce signal sur deux canaux (21, 22) après amplification.
  6. Procédé selon la revendicatione 1 pour des moulins à chocs, dans lesquels l'entraínement (10, 11, 12, 14) de l'écran de chocs (5, 7) est réalisé de manière connue au moyen d'un organe intermédiaire élastique (13) qui permet à tout moment une déviation de l'écran de chocs (5, 7) lorsque des parties non-broyables sont parvenues dans le moulin à chocs, caractérisé en ce que l'entraínement (10, 11, 12, 14) est arrêté lors du mouvement d'approche quand, suite à un blocage de l'écran de chocs (5, 7), l'organe intermédiaire (13) élastique est écrasé depuis le côté entraínement.
  7. Installation pour le réglage automatique de l'écran de chocs d'un moulin à chocs avec un moteur d'entraínement pour l'écran de chocs, au moyen duquel celui-ci peut être réglé par rapport au cercle de frappe du rotor, et un microphone disposé sur le boítier du moulin à chocs, caractériséé par des amplificateurs (19, 20) branchés en aval du microphone (18), par une séparation du canal qui transmet le signal amplifié provenant du microphone en deux canaux (21, 22), dont l'un mène à un calculateur (27) par l'intermédiaire d'un découpleur de signal (23) à bas seuil de déclenchement et dont l'autre mène au calculateur par l'intermédiaire d'un découpleur de signal (24) à seuil de déclenchement élevé, ledit calculateur étant programmé de manière telle qu'après réception d'un signal rétardé dans le temps et provenant de l'arrêt de l'alimentation en matériau, il met en route le moteur d'entraínement (10, 11) dans le sens d'un rapprochement de l'écran de chocs (5,7) en direction du cercle de frappe du rotor (8), il inverse ce déplacement aussitôt qu'il est atteint à plusieurs reprises par un signal qui dépasse le seuil de déclenchement élevé, il arrête le déplacement de recul en fonction d'un programme chargé dans le calculateur et il remet en route l'alimentation en matériau.
  8. Installation selon la revendication 7, caractérisée en ce que des commutateurs temporisés déclenchables (25, 26) sont branchés en aval des découpleurs de signaux (23, 24).
  9. Installation pour la mise en oeuvre du procédé selon la revendication 6, caractérisée en ce qu'un élément de commutation (15, 16) est prévu sur les pièces mobiles l'une par rapport à l'autre de l'organe intermédiaire élastique (13), cet élément de commutation modifiant son état de commutation lors de l'écrasement de l'organe intermédiaire (13) depuis le côté entraínement, et produisant ainsi un signal par lequel le mouvement d'entraínement de l'écran de chocs (5, 7) est arrêté au moyen du calculateur (27) ou est modifié d'une autre manière, par exemple dans un processus de reculs et d'avances brefs et multiples jusqu'à ce que la modification de l'état de commutation de l'élément de commutation (15, 16) n'existe plus.
EP90104795A 1989-04-07 1990-03-14 Procédé de réglage automatique de la fente de broyage, déterminant la granulométrie, d'une machine de broyage et dispositif pour la mise en oeuvre du procédé Expired - Lifetime EP0391096B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90104795T ATE98524T1 (de) 1989-04-07 1990-03-14 Verfahren zum automatischen einstellen des den kornaufbau deszerkleinerten gutes bestimmenden mahlspaltes einer zerkleinerungsmachine und anlage hierfuer.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3911271 1989-04-07
DE3911271A DE3911271A1 (de) 1989-04-07 1989-04-07 Verfahren zum betrieb einer zerkleinerungsmaschine und anlage zur automatischen einstellung der zerkleinerungsmaschine

Publications (4)

Publication Number Publication Date
EP0391096A2 EP0391096A2 (fr) 1990-10-10
EP0391096A3 EP0391096A3 (fr) 1991-08-14
EP0391096B1 EP0391096B1 (fr) 1993-12-15
EP0391096B2 true EP0391096B2 (fr) 2000-01-19

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ID=6378069

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Application Number Title Priority Date Filing Date
EP90104795A Expired - Lifetime EP0391096B2 (fr) 1989-04-07 1990-03-14 Procédé de réglage automatique de la fente de broyage, déterminant la granulométrie, d'une machine de broyage et dispositif pour la mise en oeuvre du procédé

Country Status (9)

Country Link
EP (1) EP0391096B2 (fr)
JP (1) JP2928327B2 (fr)
AT (1) ATE98524T1 (fr)
BR (1) BR9001631A (fr)
CA (1) CA2014021C (fr)
DE (2) DE3911271A1 (fr)
ES (1) ES2049359T5 (fr)
MX (1) MX173058B (fr)
ZA (1) ZA902579B (fr)

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DE102020125132A1 (de) 2020-09-25 2022-03-31 Kleemann Gmbh Prallbrecher

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ATE251535T1 (de) * 1998-07-16 2003-10-15 Buehler Ag Verfahren zum einstellen eines schneidespaltes in einem granulier-/extrudierverfahren und extrudiervorrichtung zur durchführung des verfahrens
KR100871307B1 (ko) 2001-07-27 2008-12-01 가부시키가이샤 고마쓰 세이사쿠쇼 파쇄장치, 그의 간격조정장치 및 이들을 탑재한 이동식파쇄기
JP4879415B2 (ja) * 2001-07-31 2012-02-22 株式会社小松製作所 インパクトクラッシャの隙間調整装置
JP4745555B2 (ja) * 2001-08-10 2011-08-10 株式会社小松製作所 インパクトクラッシャ
JP4022406B2 (ja) * 2001-08-27 2007-12-19 株式会社小松製作所 インパクトクラッシャの隙間調整装置の制御方法およびその隙間調整装置
KR101322245B1 (ko) * 2011-12-19 2013-10-28 주식회사 포스코 연료파쇄장비의 반발판 충돌방지장치
CN109046735B (zh) * 2018-10-24 2020-06-30 江苏丰尚智能科技有限公司 一种粉碎加工过程中自动调节产品粒度的装置及其方法
CN112892742B (zh) * 2021-01-19 2022-05-24 湖州通元石料有限公司 一种反击式破碎机
CN113578455B (zh) * 2021-07-30 2022-05-03 沭阳凤凰美术颜料有限公司 循环式多向分散研磨装置及其在水粉颜料加工中的应用
CN114082486B (zh) * 2022-01-17 2022-04-01 河北燕山钢铁集团有限公司 一种废钢破碎回收再利用装置

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Publication number Priority date Publication date Assignee Title
DE102020125132A1 (de) 2020-09-25 2022-03-31 Kleemann Gmbh Prallbrecher
EP3984644A1 (fr) 2020-09-25 2022-04-20 Kleemann Gmbh Concasseur à percussion

Also Published As

Publication number Publication date
BR9001631A (pt) 1991-05-07
DE3911271A1 (de) 1990-10-11
CA2014021C (fr) 2001-01-23
ES2049359T5 (es) 2000-04-01
ATE98524T1 (de) 1994-01-15
JPH02293058A (ja) 1990-12-04
CA2014021A1 (fr) 1990-10-07
EP0391096A3 (fr) 1991-08-14
DE59003828D1 (de) 1994-01-27
EP0391096A2 (fr) 1990-10-10
ES2049359T3 (es) 1994-04-16
ZA902579B (en) 1991-04-24
EP0391096B1 (fr) 1993-12-15
JP2928327B2 (ja) 1999-08-03
MX173058B (es) 1994-01-31

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