EP1172149B1 - Broyeur à contre-jets à lit fluidisé - Google Patents

Broyeur à contre-jets à lit fluidisé Download PDF

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Publication number
EP1172149B1
EP1172149B1 EP01114088A EP01114088A EP1172149B1 EP 1172149 B1 EP1172149 B1 EP 1172149B1 EP 01114088 A EP01114088 A EP 01114088A EP 01114088 A EP01114088 A EP 01114088A EP 1172149 B1 EP1172149 B1 EP 1172149B1
Authority
EP
European Patent Office
Prior art keywords
milling
fluidised bed
jet mill
milling container
counter jet
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
EP01114088A
Other languages
German (de)
English (en)
Other versions
EP1172149A1 (fr
Inventor
Georg Dipl.Ing. Ing. Konetzka (Grad.)
Hermann Eder
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.)
Hosokawa Alpine AG
Original Assignee
Hosokawa Alpine AG
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Filing date
Publication date
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Publication of EP1172149A1 publication Critical patent/EP1172149A1/fr
Application granted granted Critical
Publication of EP1172149B1 publication Critical patent/EP1172149B1/fr
Anticipated expiration legal-status Critical
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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
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/06—Jet mills
    • B02C19/068—Jet mills of the fluidised-bed type

Definitions

  • the invention relates to fluidized bed counter-jet mills which are designed as classifier mills and relates to the design and arrangement of the components.
  • Fluid bed counter-jet mills generally consist of a vertical axis cylindrical grinding container, wherein jet nozzles are provided in the lower part of the grinding container. The jet nozzles are directed against each other so that the grinding material in the grinding container is sucked into the jets and accelerated with them, wherein it is crushed due to mutual collisions between the Mahlgutteilchen by impact.
  • a viewing device is present in the upper part of the grinding container.
  • the sighting device is generally designed as a centrifugal separator, whereby particles finer than the cut-off grain size are transported inwardly into the rotating blade wheel of the classifier and separated, whereas particles which are coarser than the cut-off particle size are thrown off the rotating blade wheel and in the grinding container remain.
  • Such a classifier mill is eg off DE 33 38 138 C2 known. It is designed as a fluidized-bed jet mill, with a free from the internals to guide the grinding gas jets grinding chamber, in the bottom region of a nozzle with vertically upwardly exiting, both for grinding and fluidization of the material located in the grinding chamber serving gas jet is arranged and the filled up to such a height completely with the material to be comminuted, that good and gas emerge as a low-speed fountain from the bed of material, this fountain for supplying a provided above the surface of the bed of material, operated independently of the momentum of emerging from the floor nozzle jet reformers serves.
  • the local sighting device is arranged in the upper part of the grinding container and rotates about a vertical axis.
  • the separator wheel operates on the principle of centrifugal force and separates sufficiently finely ground material from the material to be ground and guides it out of the grinding container via a fine material discharge located above the separator wheel. Furthermore, an arranged above the fine material discharge storage and drive device for the rotating reformerrad available.
  • the object of the invention is therefore to improve a fluidized bed rotary jet mill with viewing device such that it is easily accessible, can be completely cleaned easily and easily.
  • the fluidized bed counter-jet mill provides a reformerradan angel, which forms a structural unit together with the storage and drive device and is detachably connected to the grinding container.
  • the unit is movable by kinematic means relative to the grinding container so that the classifier wheel can be removed through the fines discharge upwards out of the grinding container.
  • the fines discharge remains connected to the grinding container.
  • the grinding container is thus not divided and made accessible in a plane between the lower part in which the grinding chamber is located and the upper part in which the viewing device is located, but the parting plane is located within the region of the viewing device.
  • both the classifier wheel and the interior of the fine-material discharge space and the classifier wheel shaft are freely accessible.
  • the classifier wheel can be pivoted through 180 °, so that the classifier wheel and the grinding container are optimally accessible and can be easily cleaned.
  • the pivotability is achieved by a kinematics, which first moves the crusherrad together with the storage and drive device vertically upwards and then rotated by an angle greater than 90 °, preferably up to 180 ° about an axis in a horizontal plane.
  • the axis of rotation passes through the center of gravity of the assembly of sorterrad, storage and drive device.
  • This opening principle can be advantageous not only in fluidized bed jet mills, but e.g. can also be used in impact mills with a rotating beater.
  • the crusherrad is functionally replaced by a rotating Schlägerwerk and the container wall carries at the height of the beater mechanism over the circumference of the housing, the inner impact ribs or grinding tracks.
  • Mahlguteinlauf The arranged above the rotating Schlägerwerk space with line connection serves as Mahlguteinlauf.
  • the Mahl Kunststoffringtechnische for distribution of the grinding air is arranged on the terminals of the individual jet nozzles above the jet nozzles, preferably at the level of reformerrades. This arrangement avoids contamination of the Mahl Kunststoffringtechnisch with product dusts.
  • Mahl Kunststofftechnisch are arranged at the same height to the jet nozzles or below, so that it has come because of backflow in the lines for sucking ground material in the Mahl Kunststoffringtechnisch.
  • the connecting pieces of the flexible hose lines are arranged on the Mahl Kunststoffringtechnisch offset from the connecting pieces to the nozzles.
  • the staggered arrangement is such that when Loosen the fittings on the nozzles, align the hoses by gravity into a vertical position while pivoting the loosened fittings laterally away from the nozzles. As a result, the nozzle and the nozzle holding the grinding container for cleaning purposes is easily accessible.
  • the corner weld in the transition region of the cylindrical grinding container wall and the conical bottom is replaced by a respective flat weld on the vertical grinding container wall and on the conical wall of the bottom.
  • an annular stop plate between Mahl alternerwand and the bottom is welded, which has on its inner annular surface a transition contour with a large radius at which no material can attach and which is easy to clean.
  • FIG. 1 shows the fine material discharge space 1, to which the fine material outlet 2 is connected in a spatial position between separator wheel 3 and separator wheel storage 4.
  • the prepareerrad 3 forms together with the prepareerradlagerung 4 and the drive 14 a structural unit, which is releasably connected by means of a bearing flange 5 via screws 8 with the mill 15.
  • the bearing flange 5 forms a tight conclusion for the fines discharge space 1.
  • the bearing flange 5 is centered over a fit 6 relative to the mill housing 7.
  • the Mahlluftring horrides 16 is mounted externally on the mill housing 7 at the level of treaterrades 3. Over the circumference of the Mahlluftring effet 16 a plurality of connecting pieces 17 are arranged, to which elastic pressure hoses 9 are connected. The pressure hoses 9 lead the supplied via the Mahl Kunststoffring effet 16 via the terminal 21 compressed air to each jet nozzle 12. The pressure hoses 9 are detachably connected via additional connecting pieces 10 with the jet nozzles 12. The upper connecting pieces 17 are offset on the circumference relative to the lower connecting pieces 10, so that when loosening the screw 13 at the connecting pieces 10, the pressure hoses 9 pivot in a vertical position due to gravity and release the inlet openings to the jet nozzles 12 (see also Fig. 5).
  • Fig. 2 the assembly of bearing flange 5, as well as storage 4 - and drive means 14 can be seen in the closed state.
  • the belt drive 18 connects the drive device 14 with the bearing 4 and translates the rotational speed of the drive device 14 to a suitable speed for the separator wheel.
  • the pivoting device shown in Fig. 3 allows rotation of the assembly of preparerrad 3, and storage 4 - and drive means 14 about the axis of rotation 19 by 180 °.
  • the axis of rotation of the crushererrades 3 is then aligned vertically and the preparerrad 3 is accessible in an upwardly open position.
  • the distance L and H of the axis of rotation 19 from the center of the cleaning opening 20 is selected so that the cleaning opening 20 is completely exposed and the interior is easily accessible.
  • the opening operation of Fig. 4 is controlled so that the rotary drive and the vertical drive of the pivoting device can be moved simultaneously.
  • the axis of rotation of the pivoting device is preferably in or as close as possible to the center of mass.
  • a stop plate 23 is provided in the transition from the cylindrical grinding container wall of the mill 15 and the conical grinding container bottom 22, which has a transition rounding 24 at the inner radial edge.
  • stopper plate 23 extending around the mill 15 are provided on the top and bottom of the stop plate, which reduce the stop plate 23 to the required wall thickness of Mahl alternerwand.
  • the opening principle according to the invention can also be applied to mills with a beater mechanism, which however are not part of the present invention.
  • the rotating working part 26 is equipped with impact beaters 27, which cooperates with a mounted on the inner circumference of the grinding containers Mahlbahn 28.
  • Mahlgutholzgabe takes place via the inlet 29 into the feed space 30, from where the ground material is distributed to the impact beaters 27.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Disintegrating Or Milling (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Crushing And Grinding (AREA)
  • Paper (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (9)

  1. Broyeur à contre-jets à lit fluidisé, composé :
    - d'un réservoir de broyage destiné à recevoir de la matière à broyer,
    - d'un nombre de buses à contre-jets (12) dirigées vers l'intérieur qui sont disposées dans la partie inférieure du réservoir de broyage et orientées de façon que les jets se rencontrent en un point commun pour broyer et fluidiser la matière à broyer se trouvant dans le réservoir de broyage,
    - d'un dispositif de séparation disposé dans la partie supérieure du réservoir de broyage avec une roue de séparateur (3) tournant autour d'un axe vertical, fonctionnant selon le principe de la force centrifuge pour séparer la matière broyée suffisamment finement de la matière à broyer,
    - d'un dispositif de support et d'entraînement (4, 14) pour la roue de séparateur rotative (3),
    - d'un chargement de matière servant à amener de la matière à broyer dans le réservoir de broyage,
    - d'une décharge de matière fine (1, 2) disposée au-dessus de la roue de séparateur (3), servant à évacuer du réservoir de broyage la matière séparée, broyée suffisamment finement,
    caractérisé en ce que la roue de séparateur (3) forme avec le dispositif de support et d'entraînement (4, 14) un ensemble structurel qui est relié de manière amovible au réservoir de broyage, l'ensemble structurel étant mobile par rapport au réservoir de broyage grâce à des dispositifs cinématiques de façon que la roue de séparateur (3) puisse être retirée du réservoir de broyage vers le haut à travers la décharge de matière fine (1, 2), la décharge de matière fine (1, 2) restant reliée au réservoir de broyage.
  2. Broyeur à contre-jets à lit fluidisé selon la revendication 1, caractérisé en ce que l'ensemble structurel formé par le dispositif de support et d'entraînement peut être déplacé linéairement en direction verticale par un dispositif de levage et amené à pivoter autour d'un axe situé dans le plan vertical par un dispositif de rotation.
  3. Broyeur à contre-jets à lit fluidisé selon la revendication 2, caractérisé en ce que le dispositif de levage est un vérin hydraulique et le dispositif de rotation un moteur hydraulique.
  4. Broyeur à contre-jets à lit fluidisé selon les revendications 1 à 3, caractérisé en ce que l'ensemble structurel formé par le dispositif de support et d'entraînement peut pivoter autour de son barycentre.
  5. Broyeur à contre-jets à lit fluidisé selon les revendications 1 à 3, caractérisé en ce que l'ensemble structurel formé par le dispositif de support et d'entraînement peut pivoter de 180°.
  6. Broyeur à contre-jets à lit fluidisé selon les revendications 1 à 3, caractérisé en ce que la position de l'axe de rotation de l'ensemble structurel est choisie de façon qu'après le pivotement de l'ensemble structurel, l'ouverture de nettoyage soit entièrement dégagée.
  7. Broyeur à contre-jets à lit fluidisé selon les revendications 1 à 3, caractérisé en ce que la conduite circulaire d'air de broyage est disposée au-dessus des buses d'éjection à hauteur de la roue de séparateur.
  8. Broyeur à contre-jets à lit fluidisé selon les revendications 1 à 3, caractérisé en ce que les raccords d'air de broyage sur le pourtour de la conduite circulaire d'air de broyage sont disposés en décalage par rapport aux raccords d'air de broyage des buses d'éjection.
  9. Broyeur à contre-jets à lit fluidisé selon les revendications 1 à 3, caractérisé en ce qu'entre la paroi cylindrique de réservoir de broyage et le fond conique de réservoir de broyage est prévue une plaque de butée qui présente un arrondi de transition sur le bord radial intérieur et est soudée à joint abouté avec la paroi cylindrique de réservoir de broyage et le fond conique de réservoir de broyage.
EP01114088A 2000-07-11 2001-06-09 Broyeur à contre-jets à lit fluidisé Expired - Lifetime EP1172149B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10033628A DE10033628A1 (de) 2000-07-11 2000-07-11 Fliessbett-Gegenstrahlmühle
DE10033628 2000-07-11

Publications (2)

Publication Number Publication Date
EP1172149A1 EP1172149A1 (fr) 2002-01-16
EP1172149B1 true EP1172149B1 (fr) 2007-12-26

Family

ID=7648523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01114088A Expired - Lifetime EP1172149B1 (fr) 2000-07-11 2001-06-09 Broyeur à contre-jets à lit fluidisé

Country Status (6)

Country Link
US (1) US6543710B2 (fr)
EP (1) EP1172149B1 (fr)
JP (1) JP4778636B2 (fr)
AT (1) ATE381967T1 (fr)
DE (2) DE10033628A1 (fr)
ES (1) ES2295085T4 (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006091175A (ja) 2004-09-21 2006-04-06 Kao Corp トナーの製造方法
US7449275B2 (en) 2004-09-21 2008-11-11 Kao Corporation Process for preparing toner
US7560218B2 (en) 2004-10-01 2009-07-14 Kao Corporation Process for preparing toner
JP4491328B2 (ja) * 2004-10-29 2010-06-30 花王株式会社 トナーの製造方法
US20100221540A1 (en) * 2006-02-24 2010-09-02 Vitrabio Gmbh Process for Producing a Porous Glass and Glass Powder and Glass Material for Carrying Out the Process
US8858699B2 (en) 2006-07-13 2014-10-14 Unimin Corporation Ultra fine nepheline syenite powder and products for using same
US20080040980A1 (en) * 2006-07-13 2008-02-21 Unimin Corporation Method of processing nepheline syenite
US20080015104A1 (en) * 2006-07-13 2008-01-17 Unimin Corporation Ultrafine nepheline syenite
US7757976B2 (en) * 2007-02-07 2010-07-20 Unimin Corporation Method of processing nepheline syenite powder to produce an ultra-fine grain size product
CA2691830C (fr) * 2007-07-09 2014-07-29 Unimin Corporation Poudre de syenite nephelinique ayant une taille de particules regulee et son nouveau procede de fabrication
JP5246914B2 (ja) 2007-11-26 2013-07-24 花王株式会社 トナーの製造方法
US8182601B2 (en) * 2008-04-17 2012-05-22 Unimin Corporation Powder formed from mineral or rock material with controlled particle size distribution for thermal films
DE102008030749B4 (de) * 2008-06-27 2019-03-07 Hosokawa Alpine Ag Mahlvorrichtung mit Mühle als Einbaumodul
US8091817B2 (en) * 2009-12-11 2012-01-10 Flsmidth A/S Milling device
ITMI20120092A1 (it) * 2012-01-26 2013-07-27 Micro Macinazione S A Compositi di inclusione farmaco-carrier preparati con processo di attivazione meccano-chimica mediante mulini a getto di fluido ad alta energia
DE102018008127B4 (de) 2018-10-13 2022-06-09 Hosokawa Alpine Aktiengesellschaft Blaskopf und Verfahren zur Herstellung einer Mehrschichtschlauchfolie
DE102018009632B4 (de) 2018-12-11 2021-12-09 Hosokawa Alpine Aktiengesellschaft Vorrichtung zum Aufwickeln und Wickelwechsel von bahnförmigem Material und ein Verfahren dafür
DE102020000334A1 (de) 2020-01-21 2021-07-22 Hosokawa Alpine Aktiengesellschaft Vorrichtung und Verfahren zur monaxialen Längenänderung von Folienbahnen
DE102020006008B3 (de) 2020-10-01 2022-03-31 Hosokawa Alpine Aktiengesellschaft Fließbettgegenstrahlmühle zur Erzeugung feinster Partikel aus Aufgabegut geringer Schüttdichte und Verfahren dafür
CN114011715B (zh) * 2021-12-14 2022-12-06 昆山强威粉体设备有限公司 流化床对撞式气流粉碎机的分级轮负压出料装置
DE102022000351A1 (de) 2022-01-29 2023-08-03 Hosokawa Alpine Aktiengesellschaft Verfahren und Vorrichtung zur Foliendickenregelung von gereckter im Folienblasverfahren hergestellter Schlauchfolie

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US6398139B1 (en) * 1999-08-23 2002-06-04 Roland Nied Process for fluidized-bed jet milling, device for carrying out this process and unit with such a device for carrying out this process

Also Published As

Publication number Publication date
EP1172149A1 (fr) 2002-01-16
DE10033628A1 (de) 2002-01-24
ATE381967T1 (de) 2008-01-15
JP4778636B2 (ja) 2011-09-21
US20020011534A1 (en) 2002-01-31
US6543710B2 (en) 2003-04-08
DE50113409D1 (de) 2008-02-07
JP2002035631A (ja) 2002-02-05
ES2295085T4 (es) 2008-06-16
ES2295085T3 (es) 2008-04-16

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