EP2178642B1 - Broyeur agitateur - Google Patents

Broyeur agitateur Download PDF

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Publication number
EP2178642B1
EP2178642B1 EP07786694A EP07786694A EP2178642B1 EP 2178642 B1 EP2178642 B1 EP 2178642B1 EP 07786694 A EP07786694 A EP 07786694A EP 07786694 A EP07786694 A EP 07786694A EP 2178642 B1 EP2178642 B1 EP 2178642B1
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EP
European Patent Office
Prior art keywords
agitator
disc
last
grinding
adjacent
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.)
Active
Application number
EP07786694A
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German (de)
English (en)
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EP2178642A1 (fr
Inventor
Norbert Stehr
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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Publication date
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Publication of EP2178642A1 publication Critical patent/EP2178642A1/fr
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Publication of EP2178642B1 publication Critical patent/EP2178642B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/161—Arrangements for separating milling media and ground 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
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/163—Stirring means

Definitions

  • the invention relates to a stirred mill according to the preamble of claim 1.
  • Such a stirring mill is from the EP 0 751 830 B1 known.
  • the distance between the last cage-carrying stirring disk and the adjacent stirring disk is significantly smaller than the distance of the other stirring disks from each other.
  • the distance is in each case so large that set so-called Zopfströmonne, that is, adjacent to the stirring discs, the material to be ground flows with the Mahlos stressesn due to the applied by the stirring discs tangential pulses to the outside.
  • the grinding stock and grinding aid body flow back towards the stirrer shaft.
  • the distance between adjacent stirring discs must be sufficiently large.
  • This distance is also defined by a so-called separation angle, which is enclosed by two lines.
  • a line extends between a radially inner end of a stirring disc on the stirrer shaft. The other line is parallel to the axis of the stirrer shaft.
  • the angle of separation should be between 30 ° and 60 °.
  • the distance between the last stirring disk and the adjacent stirring disk is significantly reduced, so that there takes place a preclassification before the separator.
  • the invention has for its object to design a stirred mill of the generic type so that without increasing the length of a more intensive grinding and dispersing process at the same time good separation of Mahlangesterrorism and coarse not sufficiently ground Mahlgutpappel.
  • the agitator mill shown in the drawing has a machine stand 1, on which a grinding container 2 is releasably attached.
  • a drive motor 3 is arranged, which drives a stirrer shaft 5 of a stirrer 6 via a belt drive 4.
  • the agitator shaft 5 is rotatably supported in the machine stand 1 in bearings 7.
  • the agitator shaft 5 is not stored, d. H. it is stored in the machine stand 1 flying.
  • the grinding container 2 is closed relative to the machine stand 1 by means of a lid 8, which is penetrated by the stirring shaft 5, wherein a seal by means of a shaft seal 9 is effected.
  • a grinding material feed 11 opens into the grinding space 10 enclosed by the grinding container 2. From the grinding material supply 11 opposite end of the grinding container 2 opens from the grinding chamber 10 final floor 12 a regrind discharge 13 from.
  • the stirring discs 14 On the agitator shaft 5 are - as part of the agitator 6 - mounted as agitating 14 stirring tools, the stirring discs 14 have openings 15 in its outer peripheral region. The distances a adjacent stirring discs 14 in the direction of the axis 16 of the stirring shaft 5 are the same. Only the distance of the cover 8 immediately adjacent stirrer disc 14 from the lid 8 is smaller than the distance a. As Fig. 2 can be removed, the bottom 12 adjacent the last stirrer disc 17 of the agitator 6 by means of a fastening screw 18 is attached to the stirrer shaft 5. The axial distance a 'of this stirring disc 17 from the adjacent penultimate stirring disc 14 of the agitator 6 is identical to the aforementioned respective axial distances a adjacent stirring discs 14. The diameter b of all stirring discs 14 and the diameter b' of the stirring disc 17 are identical.
  • a cylindrical cage 19 is formed, which may be formed integrally with the last stirring disc 17. He has distributed over its circumference numerous openings 20.
  • passages 22 formed in the last stirring disk 17 open adjacent to the stirring shaft 5.
  • a sieve device 23 is arranged concentrically to the axis 16 at the bottom 12. It is mounted on the floor 12, in such a way that the sieve means 23 can be pulled out after loosening from the bottom 12 to the outside. So it is non-rotatably connected to the grinding container 2. From the inner space 24 of the sieve device 23, the Mahlgut-discharge 13 opens.
  • the sieve device 23 may be formed by at its cylindrical periphery in a known manner at a small distance from each other arranged annular discs.
  • the inside of the stirring disk 17, the cage 19 and the screen device 23 thus form a separating device 25.
  • the screen device 23 has a closed end plate 26 adjacent to the stirring disk 17.
  • the inner space 24 of the sieve device 23 is thus connected to the separation chamber 21 only via the sieve device 23.
  • depressions 27 are formed, which have the same cross section as the openings 15, but do not lead into the separation chamber 21.
  • the recesses are located radially outside of the passages 22.
  • the grinding chamber 10 is filled to a considerable extent with Mahlöskörpem 28.
  • flowable ground material is pumped continuously through the grinding chamber 10 by means of a pump, not shown.
  • the agitator 6 is driven in rotation by the drive motor 3.
  • the material to be ground flows through the grinding chamber 10 in the direction of the grinding material outlet formed by the grinding material discharge 13. During this flow, it is exposed to strong shear stresses by the Mahlos stresses 28 and thereby comminuted particles are comminuted and also the millbase is homogenized. This process proceeds in such a way that in each case between adjacent stirrer discs 14 and 14 and 17 in the Fig. 1 and 2 set shown plait flows 29.
  • an axial flow through the grinding chamber 10 is superimposed on the pigtail flows 29.
  • the sum of these Partial flows essentially correspond to the grinding stock volume flow fed in through the grinding stock feed 11 and discharged through the grinding stock discharge 13.
  • the partial flows are deflected radially outward in the gap space 30 formed by the stirrer disk 17 and the non-rotating end plate 26 and accelerated tangentially.
  • Fig. 3 differs from the previously described embodiment in that the end plate 26 'extends radially beyond the sieve device 23 out into the vicinity of the cage 19, so that the gap space 30' extends closer to the cage 19.
  • the design after Fig. 4 is different from the after Fig. 2 in that the sieve device 23 'has a smaller axial extent than in the previously described embodiments, so that the gap space 30 "has a greater axial width than in the previously described embodiments 28 already has a longer time in the centrifugal field formed within the gap space 30 ", so that the grinding stock and auxiliary grinding body 28 already have a pronounced radial velocity.
  • the termination plate 26 is arranged as in the embodiment according to Fig. 4 ;
  • an intermediate wall 31 is mounted on the agitator 6 between the agitating disc 17 'and the end plate 26, which rotates with the agitator 6 and which defines a gap space 30 ", in which the mixture of ground material and Mahlos stresses originally is accelerated radially outward, as is the case in the previously described embodiments.
  • this intermediate wall 31 is fastened with the fastening screw 18 on the agitator shaft 5
  • the intermediate walls 31 and 31 'each extend radially at least over the end plate 26; in other words: c ⁇ d, where c is the diameter of the intermediate wall 31 or 31 'and d is the diameter of the end plate 26.
  • c> d wherein the corresponding intermediate wall 31 or 31 'extends to close to the cage 19. Since the intermediate wall 31 or 31 'rotates with the agitating disk 17, 17', a particularly high acceleration of the ground material and the auxiliary grinding body 28 takes place here.
  • the ground millbase is - unless it is thrown off by the cage 19 - in the annular gap 31a or 31'a between the outer periphery 31b and 31'b of the intermediate wall 31 and 31 'and the cage 19 is deflected in an axial flow direction and discharged through the sieve device 23.
  • a so-called separation angle ⁇ or ⁇ is used.
  • the separation angle ⁇ or ⁇ is formed between two lines 33 and 34, respectively.
  • the line 33 extends from the inner end 35 of a stirring disc 14 on the stirring shaft 5 to the outer edge 36 of an adjacent stirring disc 14.
  • the other line 34 is a line parallel to the axis 16.
  • the separation angle ⁇ is that between the last stirring disk 17 or 17 'and the next adjacent stirring disk 14.
  • the separation angle 30 ° ⁇ ⁇ 60 ° or 30 ° ⁇ ⁇ 60 °.
  • agitator mills having a horizontal axis 16 have been described in each case in the described embodiments, the invention is, of course, also applicable to agitator mills with a vertical axis.
  • the openings 15 in the stirring discs 14 can - as Fig. 7 can be removed - have a circular cross-section. Accordingly, the recesses 27 in the stirring disc 17 according to Fig. 8 circular shaped.
  • the openings 15 'in the stirrer disks 14 may have approximately the cross-section of outwardly widening trapezoids.
  • the recesses 27 'in the corresponding stirring disc 17, such as Fig. 10 is removable.
  • the passages 22 in the stirrers 17, 17 ' as it is only in Fig. 11 is shown, be designed to promote active.
  • Their walls 37 are not parallel to the axis 16 in this case, but are opposite to the direction of rotation 38 and in the flow direction 39 - ie in the direction of the end plate 26 and 26 'or to the intermediate wall 31 out - trailing by an angle ⁇ a parallel to the axis 16 employed.
  • the ground material and the auxiliary grinding bodies 28 are drawn into the passages 22 particularly intensively and pressed into the gap space 30 by them.
  • the sum of the above-mentioned partial flows therefore corresponds approximately to the total volume flow of supplied through the grinding stock feed 11 and discharged through the grinding material discharge 13 Mahlgut volume flow, in this area due to the presence of plait flow 29, the normal concentration of grinding aids 28 in the millbase is present, which are also conveyed through through the passages 22.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)

Claims (6)

  1. Broyeur agitateur, comprenant
    - un réservoir de broyage (2),
    -- qui entoure une chambre de broyage (10),
    -- dans lequel débouche, à une extrémité, une alimentation (11) de matière à broyer, et
    -- duquel débouche, à une autre extrémité, une sortie (13) de matière broyée,
    - un agitateur (6) disposé dans la chambre de broyage (10), qui présente
    -- un arbre agitateur (5) pouvant être entraîné en rotation et ayant un axe (16),
    -- un dernier disque agitateur (17, 17') d'un diamètre b', disposé sur l'arbre agitateur (5) et adjacent à la sortie (13) de matière broyée, et
    -- des disques agitateurs (14) d'un diamètre b, disposés axialement en amont du dernier disque agitateur (17, 17') et axialement écartés l'un de l'autre d'une distance a,
    -- des disques agitateurs (14) placés en amont et adjacents entre eux définissant un angle de séparation α, et le dernier disque agitateur (17, 17') et le disque agitateur (14) adjacent définissant un angle de séparation β,
    -- chaque angle de séparation α, β étant formé par une ligne (33) entre une extrémité radialement intérieure (35) d'un disque agitateur (14, 17, 17') sur l'arbre agitateur (5) et le bord extérieur (36) d'un disque agitateur (14) adjacent et par une ligne (34) parallèle à l'axe (16), et
    -- où s'applique : 30° < α < 60°,
    - des passages (22) formés dans le dernier disque agitateur (17, 17') de manière adjacente à l'arbre agitateur (5) et débouchant dans le dispositif de séparation (25),
    caractérisé en ce que
    30° < α < 60° vaut également pour l'angle de séparation β entre le dernier disque agitateur (17, 17') et le disque agitateur (14) adjacent, et en ce que le dernier disque agitateur (17, 17') est pourvu d'évidements (27) sur son côté orienté vers le disque agitateur (14) adjacent.
  2. Broyeur agitateur selon la revendication 1, caractérisé en ce que les évidements (27) sont formés radialement à l'extérieur des passages (22) ménagés dans le dernier disque agitateur (17, 17').
  3. Broyeur agitateur selon la revendication 1, caractérisé en ce que les disques agitateurs (14) sont munis d'ouvertures (15) et en ce que les évidements (27) sont de même section que les ouvertures (15).
  4. Broyeur agitateur selon la revendication 1, caractérisé en ce que les diamètres b de tous les disques agitateurs (14, 17, 17') son identiques.
  5. Broyeur agitateur selon la revendication 1, caractérisé en ce que la distance a' du dernier disque agitateur (17, 17') par rapport au disque agitateur (14) directement adjacent est identique à l'écartement mutuel a de tous les disques agitateurs (14) placés en amont.
  6. Broyeur agitateur selon la revendication 1, caractérisé en ce que les diamètres b, b' de tous les disques agitateurs (14, 17) sont identiques.
EP07786694A 2007-08-17 2007-08-17 Broyeur agitateur Active EP2178642B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/007278 WO2009024158A1 (fr) 2007-08-17 2007-08-17 Broyeur agitateur

Publications (2)

Publication Number Publication Date
EP2178642A1 EP2178642A1 (fr) 2010-04-28
EP2178642B1 true EP2178642B1 (fr) 2010-12-15

Family

ID=39262804

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07786694A Active EP2178642B1 (fr) 2007-08-17 2007-08-17 Broyeur agitateur

Country Status (8)

Country Link
US (1) US8002213B2 (fr)
EP (1) EP2178642B1 (fr)
JP (1) JP5286362B2 (fr)
CN (1) CN101808746B (fr)
AT (1) ATE491517T1 (fr)
DE (1) DE502007005993D1 (fr)
ES (1) ES2355082T3 (fr)
WO (1) WO2009024158A1 (fr)

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Publication number Priority date Publication date Assignee Title
EP2307145B1 (fr) * 2008-07-10 2018-05-23 Frewitt fabrique de machines S.A. Broyeur de perles à séparateur
PE20120237A1 (es) 2008-12-19 2012-04-14 Xstrata Technology Pty Ltd Molino de desgaste por rozamiento
CH700446A1 (de) * 2009-02-24 2010-08-31 Bachofen Willy A Ag Rührwerkskugelmühle.
WO2011039952A1 (fr) 2009-09-30 2011-04-07 株式会社サンギ Procédé permettant d'améliorer la solubilité aqueuse de substances médiocrement solubles
DE102010049827A1 (de) * 2010-10-27 2012-05-03 Netzsch-Feinmahltechnik Gmbh Rührwerkskugelmühle
CN103857831B (zh) 2011-10-10 2016-08-17 3M创新有限公司 催化剂电极及其制备和使用方法
CN103041897B (zh) * 2011-10-17 2015-02-25 谢小飞 介质搅拌磨的叠装涡轮式料珠分离器
JP5921172B2 (ja) * 2011-12-09 2016-05-24 アシザワ・ファインテック株式会社 横型乾式粉砕機
CN102824944A (zh) * 2012-09-25 2012-12-19 范伟红 珠磨机
DE102013111762A1 (de) 2013-07-08 2015-01-08 Netzsch-Feinmahltechnik Gmbh Rührwerkskugelmühle mit Axialkanälen
CN104646112A (zh) * 2013-11-18 2015-05-27 铜陵市大明玛钢有限责任公司 一种精磨球磨机
DE102013021757A1 (de) * 2013-12-20 2015-06-25 Netzsch Trockenmahltechnik Gmbh Maschine mit fliegend gelagertem Rotor
EP2905080A1 (fr) * 2014-02-07 2015-08-12 Willy A. Bachofen AG Broyeur à billes à agitateur
DE102015105655B3 (de) * 2015-04-14 2016-07-07 Netzsch-Feinmahltechnik Gmbh Spannvorrichtung für eine Rührwerkskugelmühle mit Riemen- oder Kettenantrieb und Rührwerkskugelmühle
CN105833950A (zh) * 2016-05-16 2016-08-10 怡成屏障（张家港）科技有限公司 生产环保低碳涂料用的涂料砂磨机
CN105833947A (zh) * 2016-05-16 2016-08-10 怡成屏障（张家港）科技有限公司 一种便于检修的涂料砂磨机
PL3311921T3 (pl) 2016-10-18 2019-03-29 Willy A. Bachofen Ag Młyn kulowy z mieszadłem
DK3311922T3 (en) * 2016-10-18 2019-03-18 Bachofen Willy A Ag Stirring Ball Mill
DE102017201418B3 (de) * 2017-01-30 2018-06-28 Netzsch-Feinmahltechnik Gmbh Rührwerksmühle
EP3607113B1 (fr) 2017-04-03 2023-07-19 3M Innovative Properties Company Électrolyseurs d'eau
JP2020513064A (ja) 2017-04-03 2020-04-30 スリーエム イノベイティブ プロパティズ カンパニー 水電解装置
US11414770B2 (en) 2017-04-03 2022-08-16 3M Innovative Properties Company Water electrolyzers
DE102018123096B4 (de) * 2018-09-20 2022-01-27 Netzsch Feinmahltechnik Gmbh Rührwerkskugelmühle und Verfahren zum Betreiben einer Rührwerkskugelmühle
US11560632B2 (en) 2018-09-27 2023-01-24 3M Innovative Properties Company Membrane, membrane electrode assembly, and water electrolyzer including the same
EP3899100B1 (fr) 2018-12-19 2023-01-25 3M Innovative Properties Company Électrolyseurs d'eau
CN109482287A (zh) * 2018-12-28 2019-03-19 常州市龙鑫智能装备有限公司 砂磨机用分散片
US11517149B2 (en) 2020-02-25 2022-12-06 Flower Mill LLC Flower mill assembly
CN114178002B (zh) * 2021-11-08 2023-05-09 北京天地融创科技股份有限公司 细磨机
JP7111400B1 (ja) 2021-12-10 2022-08-02 淺田鉄工株式会社 分散機

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JP2006321821A (ja) * 2005-04-22 2006-11-30 Toyo Ink Mfg Co Ltd 顔料の製造方法

Also Published As

Publication number Publication date
CN101808746A (zh) 2010-08-18
ATE491517T1 (de) 2011-01-15
DE502007005993D1 (de) 2011-01-27
CN101808746B (zh) 2012-12-12
JP5286362B2 (ja) 2013-09-11
ES2355082T3 (es) 2011-03-22
US20110036935A1 (en) 2011-02-17
US8002213B2 (en) 2011-08-23
JP2010536544A (ja) 2010-12-02
WO2009024158A1 (fr) 2009-02-26
EP2178642A1 (fr) 2010-04-28

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