EP1126908B1 - Dispositif de dispersion - Google Patents

Dispositif de dispersion Download PDF

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Publication number
EP1126908B1
EP1126908B1 EP99957911A EP99957911A EP1126908B1 EP 1126908 B1 EP1126908 B1 EP 1126908B1 EP 99957911 A EP99957911 A EP 99957911A EP 99957911 A EP99957911 A EP 99957911A EP 1126908 B1 EP1126908 B1 EP 1126908B1
Authority
EP
European Patent Office
Prior art keywords
housing
impeller
grinding
grinding device
dispersed
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
EP99957911A
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German (de)
English (en)
Other versions
EP1126908A1 (fr
Inventor
Hermann Getzmann
Frank Schieweg
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.)
VMA-Getzmann GmbH
VMA Getzmann GmbH
Original Assignee
VMA-Getzmann GmbH
VMA Getzmann GmbH
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
Application filed by VMA-Getzmann GmbH, VMA Getzmann GmbH filed Critical VMA-Getzmann GmbH
Publication of EP1126908A1 publication Critical patent/EP1126908A1/fr
Application granted granted Critical
Publication of EP1126908B1 publication Critical patent/EP1126908B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B02C17/168—Mills in which a fixed container houses stirring means tumbling the charge with a basket media milling device arranged in or on the container, involving therein a circulatory flow of the material to be milled

Definitions

  • the invention relates to a dispersing device, in particular a ball or pearl mill with a Containers for receiving and processing a product to be dispersed, a grinding device with a grinding media Housing that has openings for the dispersed material to pass through has, a stirrer arranged in the housing and a first flow generating device, the housing and the stirring tool is movable relative to one another and at least one shaft through a passage opening in the Housing protrudes through which the dispersed material enters the housing can occur, in the housing in the area of Passage opening between the shaft and the housing second flow generating device is provided.
  • Such a grinding device is known from US Pat. No. 5,194,783 known.
  • an agitator immersion mill disclosed which dispersed by the circulation process.
  • she consists essentially of a wear-resistant, with as Grinding ball filled grinding media filled in dips a double-walled container.
  • This Drive shaft drives the arranged in the strainer basket as Rod trained agitator device.
  • the walls of the Sieve basket have perforated perforations in a sieve shape.
  • This Flow generating device must be outside the strainer be located to ensure sufficient flow.
  • the drive shaft thus penetrates the screen basket.
  • a separation and sealing system is installed, that prevents the grinding balls from escaping from the sieve.
  • the central arrangement of the flow generating device brings clear fluidic advantages with it, because it is a even flow through the entire container ensured is.
  • the product to be dispersed must be predispersed. It is preferably predispersed with a dissolver disc, because especially with difficult to disperse agglomerates, which in other methods still use the grinder require optimal predispersion from economical Is essential.
  • An insufficiently pre-dispersed product not only requires longer runtimes from a standing start the known milling devices, but often did not achieve the desired subtleties. Omissions or Errors in predispersion can usually not be caused by other systems are balanced; especially not because because insufficiently pre-dispersed products in the further Use the grinder to plug the holes in the Strainer basket, which causes circulation through the strainer basket difficult or completely prevented.
  • a basket mill is known from EP 0 546 715, on the a cylindrical collar is placed on the upper housing cover, in which an impeller provided on the shaft runs. The inadvertent leakage of the grinding media from the housing also not prevented by this device.
  • the invention is therefore the technical problem based on a dispersion device mentioned in the beginning further develop that an escape of the grinding balls from the Housing or the grinding basket is reliably prevented.
  • this object is achieved in that the second flow generating device designed as an impeller which is the dispersed material during operation by the Passed through the opening in the container in the housing and that the housing in the area of the passage opening as half-shell-shaped pump housing to accommodate the impeller is designed to prevent the grinding media from escaping and that the blades of the impeller towards the housing wall are aligned.
  • the configuration according to the invention is used for the relative movement a flow into the interior of the grinder housing generated. This current is so strong that there is a leak the grinding balls from the passage opening into the Containing dispersed material is reliably prevented.
  • the second flow generating device effects more thorough mixing and faster absorption of the dispersed material in the housing of the grinding device, which the Throughput increased.
  • the flow generating device directs the grinding balls (deflection), which by the Step out of the opening in the grinding basket. Should this Deflection may not be sufficient for each entry of the grinding balls in the passage opening to prevent flow generated by the flow generating device sufficient to get these balls back into the To suck the grinding basket or into the grinding device.
  • the configuration of the dispersing device according to the invention associated with the particular advantage that the flow generated by the flow generating device even the much lighter and cheaper, z.
  • grinding balls designed as glass beads within the grinding device stops so that on the heavier and more expensive, for example grinding balls made of zirconium oxide are dispensed with can be, usually because of their higher density and the associated weight for numerous grinding processes are necessary.
  • the use of inexpensive grinding balls Glass significantly reduces the cost of grinding.
  • the flow generating device is preferably an impeller formed, and the housing of the grinding device in the area of the passage opening a pump housing for receiving of the impeller.
  • the impeller runs in one correspondingly trained area for its inclusion Housing of the grinder. The impeller and the housing thus form a pump for drawing liquid into the Interior of the case.
  • the pump housing essentially has the shape of a half-shell in which the Impeller can be used so that the wings or webs in Are aligned in the direction of the housing wall.
  • the passage opening can be located at the bottom of the funnel, so that the sucked into the interior of the container by the impeller Dispersed material flows down or sucked down the funnel walls becomes.
  • a higher pumping capacity of the impeller is achieved if the pump housing has inclined walls, which on the inclination of the blades of the impeller are adjusted.
  • the gap existing between the impeller and the housing is preferably designed so that it is larger than that Diameter of the grinding balls, so that the grinding balls get jammed between impeller and pump housing is not possible.
  • the impeller is provided with a disc-shaped plate on which at least one wing-like web is arranged, which is in the essentially obliquely to the plate plane in the direction of the axis of rotation the plate extends and in a radial Direction on the plate is substantially oblique to one on the outer circumferential edge of the plate runs tangent. It is both possible to have only one wing-like web to provide the worm-like from the central axis of rotation the plate extends to the outer peripheral edge as also provide several wings on the plate.
  • the second Design has proven to be particularly effective in practice proved. A simplified embodiment provides that the webs are only radial (without curvature and not offset) are to be arranged on the plate.
  • the webs are in a further development in their longitudinal direction crescent-shaped, since this configuration a better deflection of the pearls and a higher one Pump performance guaranteed.
  • impeller In general, numerous web shapes for the impeller are conceivable, which are interchangeable depending on the viscosity of the medium to be ground are. For this purpose, it is particularly advantageous if the impeller can be detachably fastened in the grinding device is to ensure easy replacement.
  • the impeller can both of the flow generating device driving shaft are driven as well by another hollow shaft concentric to the first shaft, which surrounds the first wave.
  • the stirring tool has an annular disc with an all around running, step-like paragraph is provided on which Plate of the impeller is attachable.
  • the impellers are then easily interchangeable depending on the application.
  • the impeller can also be made in one piece with the circular disc be trained.
  • the milling and flow generating device are not driven by the same shaft, but a second shaft can be provided by which the stirring tool and the associated impeller can be driven independently of the first shaft.
  • the second shaft has a hollow shaft which is concentric runs to the first wave and encloses it.
  • the two waves can be used independently of one another operated so that a pre-dispersion by the flow generating device is possible.
  • the outer hollow shaft is connected via a coupling the first shaft is engaged and rotates with the same Speed.
  • the flow generating device has means to disperse on, furthermore is the grinder height adjustable, the grinding device by means of the height adjustment immersed in the dispersed material and completely again is removable therefrom while the flow generating device remains in the dispersed material.
  • This configuration enables a particularly simple and economical Separation of the predispersion by preferably as a dissolver trained flow generating device and a Fine dispersion through the grinder.
  • the Grinder is particularly easy to clean if this is designed such that the housing of the grinding device has an open profile, the stirring tool by a second Shaft can be driven and via at least one connecting web, that runs through the open profile, with the second Shaft is connected and the second shaft is a hollow shaft, that surrounds the first wave.
  • the invention is also in such agitator ball mills applicable where the shaft is fixed and the agitator carries and wherein the housing rotatable relative to the agitator is.
  • Such an agitator ball mill is then designed that the second flow generating device has a wing-like Has web, which is provided on the housing and a flow into the interior through the passage opening of the housing.
  • the flow generating device advantageously has one or more webs on the housing in the area of Passage opening are formed.
  • Dispersing device consisting essentially of a cylindrical Container 1, a dissolver 2 and an agitator ball mill 3. 1 shows only the lower section of the container 1 shown.
  • the dissolver consists of a cylindrical shaft 21 which has a dissolver disk 22 at its lower end.
  • the Dissolver disc is with several, along its circumference the circular surface alternately curved upwards and downwards Teeth 23 equipped.
  • the agitator ball mill preferably consists of a toroidal one Housing 31, in which an annular ring channel 32nd is trained.
  • the grinding balls 33 are in the annular channel 32 contain.
  • the grinding balls 33 are only in the drawing indicated as an example.
  • the ring channel is usually 32 filled with grinding balls 33.
  • the housing 31 is on the shaft 21 directed side with an all-round opening 34 Mistake.
  • the housing 31 is in the example shown double-walled, being between the walls in the wash chamber 35 formed therein, which is also annular is formed over a tempering medium at will the rods 4 designed for lowering the housing 31 can be flushed in is.
  • the rods 4 are hollow and include a feed channel and a discharge channel for the temperature control medium.
  • the housing is shown on its in relation to Figure 1 lower end with a perforated disc perforated like a sieve 25 closed, which is screwed to the housing 31.
  • a perforated disc perforated like a sieve 25 closed, which is screwed to the housing 31.
  • This perforated disc 25 flows the dispersed material through the housing 31; at the same time, the perforated disk 25 prevents the Grinding balls 33 fall out of the ring channel 32.
  • the dispersed material passes through the passage opening between the housing 31 and the shaft in the housing 31.
  • the flow of the Dispersed goods are in this area by the dashed lines Arrows shown.
  • a central bushing 26 is attached to the perforated disk 25 Screws 27 attached.
  • This socket 26 takes a cylindrical Sleeve 28 on.
  • an annular one Plain bearing 29 arranged between the outside of this sleeve 28 and the inside of the connecting sleeve 37 .
  • This slide bearing 29 prevents that the grinding balls 33 unintentionally in the gap between the Penetrating sleeve 37 and the cylindrical sleeve 28 can.
  • the slide bearing 29 causes a relative movement of the two parts to each other.
  • Ring running circular washer 36 which has a connecting sleeve 37 is connected to a hollow shaft 38, which surrounds the shaft 21.
  • the shaft 21 and the hollow shaft 38 are driven by a motor, not shown.
  • the shaft 21 is in the connecting sleeve 37 in relation to this rotatably mounted.
  • the storage takes place in the present Fall over another between the inside of the connecting sleeve 37 and the outside of the shaft 21 arranged Slide bearing 40. This also allows an axially simple Moving the housing 31 with the hollow shaft 38 in relation to the shaft 21 of the dissolver 2.
  • the connecting sleeve 37 has a circumferential step-like Paragraph 41 on which an impeller 5 is attached.
  • the impeller 5 also in one piece on the connecting sleeve 37 or the annular disc 36 may be formed.
  • the impeller 5 consists of an annular and disc-shaped Plate 50 on which several wing-like webs are arranged, which are substantially oblique to the plate plane extend in the direction of the axis of rotation of the plate 50 and in the radial direction from the axis of rotation in substantially obliquely to one on the outer peripheral edge of the Plate 50 tangent run.
  • a pump housing 42 for receiving in the area of the passage opening of the impeller 5 is formed in the housing 31.
  • the housing also has a funnel-shaped inlet 43, the one at its bottom on the side facing away from the funnel the pump housing 42 is provided for the impeller 5.
  • the pump housing 42 has an inclined wall provided which is adapted to the slope of the webs of the impeller is. This configuration results in a higher pump output accomplished since the pump housing 42 on each Point is closer to the webs of the impeller.
  • the Gap between the top edge of the webs and the wall of the pump housing is dimensioned such that a grinding ball 33 is not can be pinched between them.
  • a circumferential nose 44 is provided.
  • the nose 44 is present formed in one piece with the housing 31 and reliably prevents that the grinding balls 33 laterally in the pump housing 42 can penetrate.
  • the impeller 5 with its plate 50 and the webs 51 arranged thereon can be seen.
  • the webs 51 are trained so that they do not reach the inner edge of the Plate 50 run. This configuration allows the dispersed material better through the passage opening in the ring channel 32 flow into the housing 31.
  • This current is in the Figure 1 represented by arrows.
  • the impeller 5 is shown in plan view.
  • the circular plate 50 is clearly visible, from which the wing-like webs 51 in the viewing direction of Figure 3 raise.
  • the webs 51 run essentially obliquely to one on the outer peripheral edge of the plate 50 applied tangent 52 and are substantially sickle-shaped educated.
  • This configuration enables a particularly high pump output and at the same time manages a gapless Deflection of the outside of the impeller 5 approaching grinding balls 33.
  • the dispersed material flows during the operation in the dispersing device in the viewing direction into the inner opening and will by the rotation by those formed between the webs 51 Channels 53 in the direction of the outer peripheral edge of the Impeller 5 promoted. Due to the crescent shape the web 51 the dispersed material is additionally accelerated.
  • Impeller 6 also shown in plan view.
  • the webs 61 are made narrower than that of the impeller according to FIG. 3, so that the channels 62 between the webs are wider.
  • Such an impeller 6 can be used, for example, for more viscous dispersed goods.
  • FIG. 5 shows a further embodiment of the impeller 7 in plan view.
  • the impeller can be replaced depending on the viscosity.
  • FIG. 7 shows a further embodiment of the invention Impeller shown in plan view.
  • the Impeller 9 is on the annular plate 90 with webs 91 provided, which essentially according to. the previously described Webs are formed on the other impellers 5-7. in the Difference from these are the webs 91 on outer peripheral edge 92 with extending along this peripheral edge Provided extensions 93. In the top view they see Get out 91 like a hockey stick.
  • the extensions 93 of the Ridges redirect the dispersed material and cause one increased turbulence and improved mixing of the To be dispersed.
  • a particularly safe deflection of the possibly in the Pump housing 42 reached grinding balls 33 reached.
  • FIG. 8 shows an alternative embodiment of the impeller according to the invention, in which on the plate 94 a single, helical from the inner edge to the outer Web 95 running circumferential edge is provided.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Claims (11)

  1. Dispositif de dispersion, en particulier un broyeur à boulets ou à billes pouvant être utilisé en tant que broyeur immergé, avec un récipient (1) pour contenir et traiter un matériau dispersif, un dispositif de broyage avec un boítier contenant un corps de broyage qui comporte des ouvertures pour l'entrée du matériau dispersif, un agitateur situé dans le boítier (31) et un premier dispositif de production d'écoulement, le boítier (31) et l'agitateur pouvant se déplacer l'un par rapport à l'autre et au moins un arbre passant dans le boítier (31) à travers une ouverture de passage par laquelle le matériau dispersif peut entrer dans le boítier (31), un deuxième dispositif de production d'écoulement étant prévu dans le boítier (31) au niveau de l'ouverture de passage entre l'arbre (21) et le boítier (31), caractérisé en ce que le deuxième dispositif de production d'écoulement est configuré comme une roue à palettes (5) qui amène le matériau dispersif, pendant le fonctionnement, dans le récipient (1) dans le boítier (31) et en ce que le boítier (31) est configuré, au niveau de l'ouverture de passage, comme un carter de pompe en forme de demi-coquille (42) pour le logement de la roue à palettes (5,6,7,8), afin d'empêcher la sortie du corps de broyage et en ce que les palettes de la roue à palettes (5) sont dirigées en direction de la paroi du boítier.
  2. Dispositif de broyage selon la revendication 1, caractérisé en ce que le boítier (31) comporte une entrée (43) en forme d'entonnoir qui comporte, à sa base du côté opposé à l'entrée (43), le boítier de la pompe (42).
  3. Dispositif de broyage selon la revendication 1 ou 2, caractérisé en ce que, sur le bord extérieur de l'ouverture du boítier de la pompe (42) orientée vers l'intérieur du boítier, est prévu un embout circulaire (44).
  4. Dispositif de broyage selon l'une des revendications 1 à 3, caractérisé en ce que la roue à palettes (5,6,7,8) est munie d'une plaque en forme de disque (50,90) sur laquelle au moins une nervure en forme d'ailette (51,61,70,80,91) est disposée, qui s'étend en biais par rapport au plan de la plaque en direction de l'axe de rotation de la plaque (50,90) et est globalement inclinée par rapport à une tangente de la circonférence extérieure de la plaque (50,90).
  5. Dispositif de broyage selon la revendication 4, caractérisé en ce que la roue à palettes (5, 6, 7, 8) comporte plusieurs nervures (51, 61, 70, 80, 91).
  6. Dispositif de broyage selon la revendication 4 ou 5, caractérisé en ce que la nervure (51,61,70,80,91) a la forme d'une faucille dans le sens longitudinal.
  7. Dispositif de broyage selon l'une des revendications 1 à 6, caractérisé en ce que l'agitateur comporte un disque annulaire (36) muni d'un épaulement (41) circulaire en forme d'escalier sur lequel la plaque (50,90) de la roue à palettes (5, 6, 7, 8) est disposée.
  8. Dispositif de broyage selon l'une des revendications 1 à 7, caractérisé en ce que l'agitateur peut être entraíné par un autre arbre.
  9. Dispositif de broyage selon l'une des revendications 1 à 8, caractérisé en ce que le premier dispositif de production d'écoulement comporte des moyens de dispersion, en ce que le dispositif de broyage est réglable en hauteur et en ce que le dispositif de broyage peut être plongé dans un matériau dispersif grâce au réglage en hauteur et peut être complètement retiré de celui-ci, tandis que le dispositif de production d'écoulement reste dans le matériau dispersif.
  10. Dispositif de broyage selon la revendication 1, l'arbre étant fixe et portant l'agitateur et le boítier pouvant tourner par rapport à l'agitateur, caractérisé en ce que le deuxième dispositif de production d'écoulement comporte une nervure en forme d'ailette disposée sur le boítier (31) et produit un écoulement dans l'intérieur du boítier (31) à travers l'ouverture d'entrée.
  11. Dispositif de broyage selon la revendication 10, caractérisé en ce que le dispositif de production d'écoulement comporte plusieurs nervures qui sont formées d'un seul bloc avec le boítier au niveau de l'ouverture d'entrée.
EP99957911A 1998-11-02 1999-10-19 Dispositif de dispersion Expired - Lifetime EP1126908B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29819508U 1998-11-02
DE29819508U DE29819508U1 (de) 1998-11-02 1998-11-02 Dispergiervorrichtung
PCT/DE1999/003345 WO2000025905A1 (fr) 1998-11-02 1999-10-19 Dispositif de dispersion

Publications (2)

Publication Number Publication Date
EP1126908A1 EP1126908A1 (fr) 2001-08-29
EP1126908B1 true EP1126908B1 (fr) 2003-01-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99957911A Expired - Lifetime EP1126908B1 (fr) 1998-11-02 1999-10-19 Dispositif de dispersion

Country Status (8)

Country Link
US (1) US6565024B2 (fr)
EP (1) EP1126908B1 (fr)
JP (1) JP4508424B2 (fr)
AT (1) ATE230298T1 (fr)
AU (1) AU1547700A (fr)
DE (3) DE29819508U1 (fr)
ES (1) ES2189519T3 (fr)
WO (1) WO2000025905A1 (fr)

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DE102015105815B3 (de) * 2015-04-16 2016-06-16 Wilhelm Niemann GmbH & Co. KG Maschinenfabrik Hochleistungs-Ringraum-Tauchmühle mit rotierendem Trennsieb mit Spaltdichtung

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DE202004013056U1 (de) * 2004-08-19 2004-11-11 Vma-Getzmann Gmbh Dispergiervorrichtung
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US8196622B1 (en) 2008-11-20 2012-06-12 Fisher Michael A Apparatus for receiving and dispensing granulated materials
CN105289802B (zh) * 2015-12-05 2017-10-31 重庆百齐居建材有限公司 变速转动式研磨装置
CN108940471A (zh) * 2018-07-06 2018-12-07 张天才 一种用于锂电池材料加工的球磨设备
TWM580010U (zh) * 2019-03-11 2019-07-01 弘鈺機械工業有限公司 Stirring mill basket structure
CN113057916B (zh) * 2021-03-03 2022-12-27 胡旭英 一种护发去屑洗发水及其制备方法
CN118076719A (zh) 2021-10-08 2024-05-24 Ddp特种电子材料美国有限责任公司 减摩涂层和制备减摩涂层的方法

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015105815B3 (de) * 2015-04-16 2016-06-16 Wilhelm Niemann GmbH & Co. KG Maschinenfabrik Hochleistungs-Ringraum-Tauchmühle mit rotierendem Trennsieb mit Spaltdichtung
EP3081305A1 (fr) 2015-04-16 2016-10-19 Wilhelm Niemann GmbH & Co KG MASCHINENFABRIK Broyeur haute puissance a chambre annulaire avec tamis separateur rotatif et joint labyrinthe

Also Published As

Publication number Publication date
US20020003180A1 (en) 2002-01-10
ES2189519T3 (es) 2003-07-01
DE29819508U1 (de) 1999-01-14
AU1547700A (en) 2000-05-22
DE19982210D2 (de) 2001-09-27
JP4508424B2 (ja) 2010-07-21
DE59903933D1 (de) 2003-02-06
EP1126908A1 (fr) 2001-08-29
ATE230298T1 (de) 2003-01-15
US6565024B2 (en) 2003-05-20
WO2000025905A1 (fr) 2000-05-11
JP2002528258A (ja) 2002-09-03

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