EP1511573A1 - Rührwerksmühle - Google Patents
RührwerksmühleInfo
- Publication number
- EP1511573A1 EP1511573A1 EP03747391A EP03747391A EP1511573A1 EP 1511573 A1 EP1511573 A1 EP 1511573A1 EP 03747391 A EP03747391 A EP 03747391A EP 03747391 A EP03747391 A EP 03747391A EP 1511573 A1 EP1511573 A1 EP 1511573A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- disc
- segments
- hub
- mill according
- agitator mill
- 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.)
- Granted
Links
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
- B02C17/163—Stirring means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/051—Stirrers characterised by their elements, materials or mechanical properties
- B01F27/052—Stirrers with replaceable wearing elements; Wearing elements therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/07—Stirrers characterised by their mounting on the shaft
- B01F27/071—Fixing of the stirrer to the shaft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/115—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/83—Mixing plants specially adapted for mixing in combination with disintegrating operations
- B01F33/8305—Devices with one shaft, provided with mixing and milling tools, e.g. using balls or rollers as working tools; Devices with two or more tools rotating about the same axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/115—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis
- B01F27/1151—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis with holes on the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
- B01F33/8361—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
- B01F33/83613—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by grinding or milling
Definitions
- the invention relates to an agitator mill with a grinding container and an agitator shaft rotating therein, on which a plurality of disk-shaped agitating elements are arranged in series.
- an agitator mill is known in which an agitator shaft is arranged in the grinding chamber.
- the agitator shaft carries several disk-shaped grinding elements at an axial distance from one another. Each of the grinding elements is delimited radially by an edge bead. Between this edge bead and a hub, which is connected to the agitator shaft by a pin connection, the grinding element 4 has circular openings.
- the grinding element itself is attached to the hub by an internal thread in the agitator shaft area with an external thread. So that the grinding element can be firmly connected to the hub, the hub is provided with a thread with a reduced hub outer diameter only over a partial area of its surface facing the grinding chamber.
- the grinding element abuts against the larger diameter hub part and is braced with it. Should one or more grinding elements wear on the agitator shaft apart from the last one, which inevitably occurs after a certain number of operating hours, the previously arranged grinding elements must always be removed from the agitator shaft for replacement.
- the object of the invention is to design the grinding elements so that an exchange of individual grinding elements is made possible.
- the solution according to the invention consists in assembling a disk-shaped grinding element from several disk segments. It is thus possible to replace the grinding disks individually when they wear or break, without always having to remove the agitator shaft or remove all or more Grinding elements becomes necessary. This saves a lot of assembly time, especially in the case of large agitator mills with large grinding elements. For example, this option can also be used to replace grinding elements from wear-intensive grinding zones after certain operating hours with grinding elements from low-wear grinding zones. When assembling or disassembling grinding elements with a cross-section of up to 2 m and more, the weight of the grinding elements also plays an important role. If the grinding elements consist of several disc segments, this naturally also reduces the technical effort involved in the changing process.
- the grinding elements can also be provided with a one-part or multi-part hub.
- the advantage of using a hub that can be separated from the disk segments is that the hub can be made of a different material and can therefore be designed for other loading criteria.
- the disk segments are connected to the one-part or multi-part hub by screw connections, the screw connections extending in the radial direction from the passages in the segments to the hub.
- the parting line of the hub to the parting line of the disc segments is offset by 15-90 °, the grinding element can be made from only 4 hub and disc segments. This is particularly advantageous when the disk segments have to be coated with wear material from time to time, since a hub can be quickly separated from the disk segments.
- the grinding disc has passages. These passages increase the grinding effect.
- the disc segments can be connected to one another with screws which are directed from one passage to the other.
- the stability of the disc which consists of several disc segments, can or must be increased depending on the size of the diameter of the grinding disc.
- the joints of the pane segments can be designed differently, with the variants ranging from a mere blunt approach to projections and recesses to tongue and groove designs.
- Fig. 1 Schematic representation of a disc-shaped grinding element with five disc segments
- Fig. 3 Schematic representation of a disc-shaped grinding element with five disc segments, each with a double screw connection
- Fig. 5 Schematic representation of a disc-shaped grinding element, consisting of two segments
- Fig. 7 Schematic representation of a disc-shaped grinding disc with a special hub attachment
- FIG. 1 shows a grinding element 12, consisting of five disk segments 14, 16, 18, 20, 22.
- the disk segments have a disk core 24 which is surrounded by a plastic or rubber layer 26.
- the disc segments are provided on their legs 28, 30, as also shown in FIG. 2, with projections 32 and recesses 34, which provide axial support for the disc transitions.
- the disk segments 14, 16, 18, 20, 22 have elongated openings 36.
- the five disk segments 14 to 22 and the centrally arranged one-piece hub are through Screws 40 connected together.
- the positive connection between the drive shaft and the hub 38 is created by inserting a spring into the groove 42.
- the attachment between the disk segments 14, 16, 18, 20, 22 and the hub changes.
- the disk segments as shown in FIG. 3, are clamped to the hub 38 with a double connection by means of screws 40, 40 '.
- the partial section shown in FIG. 4 of a pair of the disk segments 18 ', 20' each shows a web 44, 44 'with a corresponding plastic or rubber coating 26.
- the disk segments 14 to 22 can be removed or replaced individually from the grinding elements, but the hub 38 itself is in one piece and comprises the agitator shaft.
- the hub or the hubs 38 can thus only be removed from the agitator shaft by removing individual or a plurality of hubs 38 or possibly spacer bushes arranged between the hubs.
- FIG. 5 shows a grinding element 12, which can be assembled both from two disc segments 46, 48 and from two hub elements 50, 52.
- Metal reinforcements 54, 56, 58, 60 are introduced into the disc elements 46, 48 made of plastic (polyamide, polyurethane). These metal reinforcements 54, 56, 58, 60 are connected to the hub by means of screws.
- Each disk segment 46, 48 is offset, for example, by 90 ° to the parting lines 64, 64 'of the hub elements 50, 52.
- FIG. 6 illustrates the design of the legs of the disk segments 46, 48 according to FIG. 5.
- the dovetail connection shown which the two disk segments 46, 48 enter in the area of their legs, increases their stabilization in addition to being fastened by the screws.
- FIGS. 7 and 8 show a further possibility of connecting the disk segments 65, 66, 68, 70 to the hub 38.
- the disk segments in the inner radius region in the direction of their axis of rotation A on a web projecting outwards from the hub 38 attached.
- Each of the four washer segments 65, 66, 68, 70 has two screw connections in this overlap region of web 72 and washer segment 65, 66, 68, 70.
- the screws 74 used for this purpose penetrate the core 76 of the disk segments 65, 66, 68, 70 and are screwed to the thread in the web 72.
- the coating 26, which is left out in this area, is supplemented here by individual covers 78, 80 made of plastic or rubber, so that the surface of the disk segments exposed to greater wear is completely provided with a coating.
- a direct connection of two or more disk segments is provided.
- the disc segments are screwed directly to and with one another.
- screws extend from the openings to the adjacent washer segment.
- pin connections in the area of the shaft or clamping connections between the projections on the disk segments can also ensure the fixed connection. With this type of connection, no central hub is provided in the center of the disk elements.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Adjustment And Processing Of Grains (AREA)
- Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
- Milling Processes (AREA)
- Crushing And Pulverization Processes (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10219482A DE10219482B4 (de) | 2002-04-30 | 2002-04-30 | Rührwerksmühle |
DE10219482 | 2002-04-30 | ||
PCT/DE2003/001369 WO2003092897A1 (de) | 2002-04-30 | 2003-04-30 | Rührwerksmühle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1511573A1 true EP1511573A1 (de) | 2005-03-09 |
EP1511573B1 EP1511573B1 (de) | 2010-06-09 |
Family
ID=29264965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03747391A Expired - Lifetime EP1511573B1 (de) | 2002-04-30 | 2003-04-30 | Rührwerksmühle |
Country Status (9)
Country | Link |
---|---|
US (1) | US20050051651A1 (de) |
EP (1) | EP1511573B1 (de) |
AT (1) | ATE470502T1 (de) |
AU (1) | AU2003243886B2 (de) |
BR (1) | BR0304566B1 (de) |
CA (1) | CA2480738C (de) |
DE (2) | DE10219482B4 (de) |
WO (1) | WO2003092897A1 (de) |
ZA (1) | ZA200406733B (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2523078C2 (ru) * | 2008-12-19 | 2014-07-20 | Экстрейта Текнолоджи Пти Лтд | Дисковая мельница |
DE102010056287A1 (de) | 2010-12-24 | 2012-06-28 | Netzsch-Feinmahltechnik Gmbh | Rührwerkskugelmühle mit Aktivrührwerk |
ES2941458T3 (es) | 2013-05-21 | 2023-05-23 | Smidth As F L | Métodos y aparatos para la monitorización continua del desgaste en circuitos de molienda |
DE102014101727B3 (de) * | 2013-11-08 | 2015-03-19 | Netzsch-Feinmahltechnik Gmbh | Verschleißschutzanordnung für eine Rührwerksmühle |
DE102013225662A1 (de) * | 2013-12-11 | 2015-06-11 | Invent Umwelt- Und Verfahrenstechnik Ag | Rührkörper zum Umwälzen von in einem Becken aufgenommenem Abwasser und Vorrichtung |
DE102015012588B4 (de) * | 2015-09-29 | 2017-12-28 | Khd Humboldt Wedag Gmbh | Rotor für eine Zerkleinerungsvorrichtung |
CN108176495B (zh) * | 2017-12-29 | 2020-06-16 | 徐州市万达石英有限公司 | 一种自动分级石英砂研磨机及其工作方法 |
DE102019123138A1 (de) * | 2019-08-29 | 2021-03-04 | Netzsch-Feinmahltechnik Gmbh | Rührwelle für eine Rührwerkskugelmühle |
DE102019129467A1 (de) | 2019-10-31 | 2021-05-06 | Netzsch-Feinmahltechnik Gmbh | Rührwerksmühle |
CN110813144A (zh) * | 2019-11-28 | 2020-02-21 | 衡阳思迈科科技有限公司 | 一种导电银浆生产用粘度调节装置 |
WO2022016211A1 (en) * | 2020-07-20 | 2022-01-27 | Vectis Pty Ltd as trustee for JJB Trust | Grinding mill |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2626757C2 (de) * | 1975-07-09 | 1984-03-15 | Meyer AG Zuchwil, Zuchwil | Rührwerkmühle, insbesondere Kolloidmühle |
US4021024A (en) * | 1976-04-12 | 1977-05-03 | Standard Oil Company (Indiana) | Perforated baffle-impeller and process of concentrating dense masses |
JPS578925Y2 (de) * | 1978-05-22 | 1982-02-20 | ||
US4513917A (en) * | 1983-06-16 | 1985-04-30 | Morehouse Industries, Inc. | Sand mill rotor discs |
KR20020083148A (ko) * | 2000-01-10 | 2002-11-01 | 프리머 밀 코퍼레이션 | 개선된 디스크를 구비한 미세 매체 분쇄기 |
-
2002
- 2002-04-30 DE DE10219482A patent/DE10219482B4/de not_active Expired - Fee Related
-
2003
- 2003-04-30 AT AT03747391T patent/ATE470502T1/de active
- 2003-04-30 AU AU2003243886A patent/AU2003243886B2/en not_active Ceased
- 2003-04-30 EP EP03747391A patent/EP1511573B1/de not_active Expired - Lifetime
- 2003-04-30 BR BRPI0304566-8A patent/BR0304566B1/pt not_active IP Right Cessation
- 2003-04-30 WO PCT/DE2003/001369 patent/WO2003092897A1/de active IP Right Grant
- 2003-04-30 CA CA002480738A patent/CA2480738C/en not_active Expired - Fee Related
- 2003-04-30 DE DE50312801T patent/DE50312801D1/de not_active Expired - Lifetime
-
2004
- 2004-08-24 ZA ZA2004/06733A patent/ZA200406733B/en unknown
- 2004-10-20 US US10/969,268 patent/US20050051651A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO03092897A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10219482B4 (de) | 2004-05-27 |
CA2480738A1 (en) | 2003-11-13 |
ZA200406733B (en) | 2005-07-27 |
DE50312801D1 (de) | 2010-07-22 |
BR0304566A (pt) | 2004-07-20 |
AU2003243886B2 (en) | 2006-09-07 |
ATE470502T1 (de) | 2010-06-15 |
DE10219482A1 (de) | 2003-11-20 |
CA2480738C (en) | 2008-04-08 |
US20050051651A1 (en) | 2005-03-10 |
EP1511573B1 (de) | 2010-06-09 |
AU2003243886A1 (en) | 2003-11-17 |
BR0304566B1 (pt) | 2011-10-04 |
WO2003092897A1 (de) | 2003-11-13 |
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