WO2008028883A1 - Mahleinheit mit kühleinrichtung - Google Patents
Mahleinheit mit kühleinrichtung Download PDFInfo
- Publication number
- WO2008028883A1 WO2008028883A1 PCT/EP2007/059170 EP2007059170W WO2008028883A1 WO 2008028883 A1 WO2008028883 A1 WO 2008028883A1 EP 2007059170 W EP2007059170 W EP 2007059170W WO 2008028883 A1 WO2008028883 A1 WO 2008028883A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- grinding
- wall
- cooling
- mahleinheit
- housing
- 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.)
- Ceased
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
- B02C17/14—Mills in which the charge to be ground is turned over by movements of the container other than by rotating, e.g. by swinging, vibrating, tilting
Definitions
- the present invention relates to a milling unit for a vibrating mill, in particular for a disc vibrating mill, wherein in the milling unit, a grinding chamber is formed, which is laterally bounded by a grinding wall, and comprising a cooling device surrounding the grinding wall.
- Such grinding units or vibrating mills are used, for example, for grinding a sample of pourable, granular ground material in the course of preparation of the sample for desired analyzes, for example for X-ray-based investigations of the elements contained with suitable equipment (eg XRF). Also regrind, which is rinsed by a liquid in the grinding chamber, is conceivable.
- the sample which may, for example, be a rock sample, ore, slag, etc., is mixed and ground in the vibratory mill with auxiliaries and then pressed with auxiliary additives to form a tablet, which is fed to an analyzer for analyzing the constituents becomes.
- the sample must be crushed in such a way that all components give a homogeneous mixture, for which a fine and uniform comminution of the material to be ground in the vibratory mill is essential. Often it is required that after the grinding process, a certain proportion of the particles (for example 90%) must fall below a certain size (for example 32 ⁇ m). For a quantitative determination of ingredients it is essential that the analysis is based on a well-defined sample size.
- a controlled automatic vibratory mill have a metering device for feeding the milling unit with regrind and tools in always exactly defined amount.
- the ground sample material is emptied into a sample collecting container during an adjustable discharge phase.
- compositions of the material to be ground it may, in particular after the end of the grinding cycle in the automatic discharge to adhesions in the milling unit, in particular in the Austrags Schemeen the Grinding vessel, the discharge area and the spout come. As a result, not all of the sample is available for analysis and thus the
- Adhesion as well as deviations in shape and position on the grinding chamber surrounding the grinding wall are particularly disadvantageous in that the grinding gap formed with a grinding ring or a grinding stone can lose its original parallel boundary which is essential for achieving fine grinding material particles and uniform particle size.
- a heating has a mowing unit mentioned at the outset for a
- the grinding wall of the grinding chamber is surrounded by an annular flow space which is bounded by an outer casing and by the upper and lower ends of the flow space bounding bottom and top walls.
- the cooling device has two or more from the outside adjacent to the grinding wall, circumferentially along at least a common peripheral portion of the grinding wall extending cooling channels, wherein adjacent cooling channels from each other at least pronouncedsabêttagen by means of a circumferentially extending support projection, through which the grinding wall is supported against a surrounding outer housing, are spaced.
- a supporting projection of the outer housing, which supports the grinding wall from the outside between the cooling channels has an advantageous effect on the achievable fineness and uniformity of the ground particles.
- the cooling effect also depending on the cross-sectional shape and size of the cooling channels, remains virtually unchanged, while additionally counteracting a remaining, yet significant, tendency to retard the grinding wall despite cooling.
- the back support according to the invention of the grinding wall between adjacent cooling channels which preferably acts at about half the height of the grinding wall, allow a comparatively short grinding operation without cooling, in which there is no support by the heating otherwise quickly to an approximately barrel-like bulge of the grinding wall would come to the outside.
- the cooling channels are introduced as cooling grooves in an outer wall surface of a housing part of the milling unit adjoining the grinding wall and the support projection adjoining the grinding wall with its free end is an integral part of the housing part.
- the grinding wall is made of an abrasion-resistant hard and hard material inasmuch as brittle material should exist, while the outer housing part of a cheaper to work on and less notch sensitive material, for example. Steel or light metal, may exist.
- An expedient embodiment may be that the grinding wall is cylindrical and the cooling grooves are introduced into a cylindrical wall surface of a housing ring of the milling unit adjoining it on the outside. It is also preferred that the housing ring is thermally shrunk onto the grinding wall.
- the outer housing part can be heated prior to assembly and then the grinding wall are inserted into the opening provided for it in the housing part.
- the housing part contracts, whereby it comes to an interference fit between the spaced sections of the wall surface, in which the cooling grooves are introduced, and the outside of the grinding wall.
- the grinding wall is glued into the outer housing part.
- the cooling grooves extend along a predominantly circumferential section, preferably over a circumferential angle of approximately 350 degrees.
- the cooling grooves may be formed into a common, through-flow, preferably by means of a radial wall projection of the
- Mahlwand surrounding housing part separate drainage section extend. If a cooled liquid, for example water, is supplied through the feed section, it flows in a clear direction through the cooling channels to the discharge section.
- a cooled liquid for example water
- At the inlet and outlet section can preferably be connected to a cooling unit, which allows circulation of the coolant at a controlled coolant temperature.
- the support projection in the region of the inlet section and / or the outlet section may be interrupted.
- An expedient development is possible in that it is spaced above in the wall surface of the housing part adjoining the vertical grinding wall from the outside a circumferential groove with an annular seal, for example, with an O-ring, is provided in each case from the uppermost cooling groove and below the lowest cooling groove.
- a uniform support of the grinding wall is achieved when the housing part, in which the cooling grooves are introduced, above the uppermost cooling groove and below the lowermost cooling groove, preferably on both sides of the ring seals has wall regions which adjoin the grinding wall from the outside.
- a discharge channel extending preferably annularly around the grinding ground is provided for discharging ground grinding stock from the vibrating mill and that the cooling grooves are arranged in a housing part, preferably in a housing ring, the milling unit are introduced, which adjoins the discharge channel. In this way, adhesions of the ground regrind and temperature-related shape and position deviations in the discharge channel are counteracted.
- the grinding unit has a connection for a blowing medium for purifying the discharge channel, preferably for compressed air, which opens for distribution in an annular channel, which from the housing part , in which the cooling grooves are introduced, and is bounded by an adjacent housing portion, so that a narrow annular gap remains as a passage to the discharge channel.
- the narrow annular gap may have a width of preferably a few or a few millimeter fractions up to possibly a few millimeters in a cross-sectional plane oriented transversely to the circumferential direction.
- the milling unit can be equipped with temperature sensors, which may preferably be arranged in the region of the grinding wall. The sensors can send measurement signals to a controller of a connected cooling unit in order to keep the temperature of the grinding wall as constant as possible by adjusting the feed temperature as required.
- the invention also encompasses a vibrating mill, in particular a disc vibrating mill, comprising a grinding unit that can be excited to vibrate by means of a vibratory drive, wherein the grinding unit realizes one or more of the previously described fiction, contemporary features.
- Fig. 1 is a sectional view through the grinding unit according to the invention a
- Disc vibrating mill in a preferred embodiment, in a first operating position for the grinding process
- FIG. 2 shows the grinding unit shown in FIG. 1 in a second operating position for the discharge process
- Fig. 3 is a side view of the vibrating mill with the grinding unit shown in Figs. 1 and 2;
- Fig. 4 in perspective as a single part in the installed state, the grinding wall enclosing housing ring, are introduced into the cooling channels with a support projection and
- FIG. 1 shows, in a cross section, the upper region of a vibrating mill 1 according to the invention or a grinding unit 2 according to the invention in accordance with a preferred embodiment.
- the grinding unit 2 shown in FIG. 1 represents an assembly which can be excited into vibrations by a separate vibratory drive connected to the grinding unit and which encloses a grinding space 3 which is bounded on the outside by a cylindrical grinding wall 4. At the bottom, during grinding, this is followed by a substantially circular grinding ground 5.
- the outer diameter of the Mahlringes 6 is smaller than the inner diameter of the grinding wall 4, and the outer diameter of the grinding stone 7 is smaller than the inner diameter of the Mahlringes 6. The thus formed between the grinding wall 4 and Mahlring 6
- the grinding gap 8 and the grinding gap 9 formed between the grinding ring 6 and the grinding stone 7 enable a lateral relative movement of the grinding ring 6 and the grinding stone 7 both relative to one another and with respect to the grinding wall 4.
- the top side is sealed by a grinding lid 10.
- the vertical distance between the grinding floor 5 and the grinding lid 10 is only slightly greater than the height of the grinding ring 6 and grinding stone 7, so that straight the desired game for the lateral movement arises.
- To the grinding wall 4 includes radially outside a housing ring 11, the bottom side screwed to a housing base 12 and thereby connected to a drive flange 13.
- the housing ring 11 is screwed to a housing cover 14. Its underside has a recess 15 into which a seal 16, in the example chosen an O-ring, and therein a grinding cover 17 are inserted. Due to the clamping force of cover screws 18 distributed along the circumference, the underside of the housing cover 14, the Seal 16 and the Mahldeckels 17 pressed against the upper end face of the grinding wall 4.
- the housing cover 14 and the grinding lid 17 have off-center passage openings for forming an entry opening 19. Through this, the grinding stock (not shown) to be comminuted can be filled into the grinding chamber 3 from above, where it is distributed in the grinding gaps 8, 9.
- the grinding wall 4, the grinding ring 6 and the grinding stone 7 can be made of a particularly suitable, in particular made of an abrasion-resistant hard material, while can be used for the housing ring 11 and the other housing parts and a conventional construction material, eg. Steel or light metal.
- a holder 20 is screwed on the underside, which carries with its free end a cylinder 21 shown in simplified form, the upper side protruding piston 22 is fastened by screwing to the grinding base 5 on the underside.
- the cylinder 21 has two ports 23, 24 for supplying a pressurized fluid, such as air or hydraulic fluid.
- a pressure medium is supplied through the lower port 24, which acts in the interior of the cylinder 21, a pressure surface of the piston 22, not shown, from below and presses it with the grinding soil 5 up until the grinding soil 5 with a step 25 in limiting positive engagement with the grinding wall 4 occurs.
- the step 25 passes against a lower chamfer 26 of the grinding wall 4 and a region of the grinding base 5 adjoining above the step 25 passes suitably into the cross section enclosed by the grinding wall 4, the grinding chamber 3 becomes during the grinding operation sealed along the outer periphery of its grinding floor.
- Figure 2 comparatively shows a second operating position in which the upper port 23 is acted upon by a pressurized fluid.
- a pressure application surface of the piston 22 is thereby acted upon from above in a manner not shown, so that the piston 22 pulls the grinding base 5 downwards until it comes into a defined positive stop with a collar 27 of the housing base 12 ,
- a gap 28 running along the circumference, through which the grinding material crushed during grinding moves into an annular discharge channel 29 and, as a result, vibration excitation up to an outlet opening, as a result of the centrifugal forces occurring during further vibration excitation 30 to an outlet
- the discharge channel 29 is radially inwardly through the grinding floor 5, the underside by a resiliently supporting thereon seal
- FIG. 3 schematically illustrates that the grinding unit 2 shown in FIGS. 1 and 2 is supported on the drive flange 13 on the underside by means of spring-damper elements 33 on a solid base.
- an oscillating drive 34 is flange-mounted on the underside by means of screw connections.
- this has a drive motor 35, here an electric motor, on whose shaft 36 rotates in an overlying housing 37 to the shaft 36 off-center, known per se and therefore not graphically illustrated with imbalance or an eccentric.
- the vibrating mill 1 or its milling unit 2 is equipped with a cooling device 38 for the rear or outer cooling of the grinding wall 4.
- this cooling device has two cooling channels 39, which are directly adjacent to the grinding wall 4 and are spaced apart from each other in parallel. As also shown in perspective in FIG. 4, these are two cooling grooves 39, which are introduced into the wall surface 40 of the housing ring 11 of the milling unit 2 that adjoins the grinding wall 4 on the outside.
- the cooling grooves 39 which in the example chosen but not necessarily extend parallel to each other over a circumferential angle of about 350 degrees, are spaced from each other by means of a likewise circumferentially extending support projection 41, which is formed like a rib. As shown in FIGS. 1, 2, this ring-segment-like support projection 41, when assembled, enters a supporting abutment against the outer side of the outer wall 4.
- the support projection 41 is integral, ie integral with the housing ring 11.
- FIG. 4 also shows that the cooling grooves 39, starting from a common inlet section 42 to a likewise common, section thereof by means of a radial wall projection 43 of the housing ring 11 separate drain section 44 extend.
- FIG. 1 shows that in the inlet section 42 (and in the hidden in Fig. 1 drainage section) a radial through hole is provided in the thread, a connection for a fluid line or a closure element 45 (as shown) can be screwed.
- FIG. 4 also shows that the support projection 41 is interrupted in the region of the inlet and outlet sections 42, 44, or ends before these sections. It can be seen in FIGS. 1 and 2 that in the wall upper edge adjacent to the vertical grinding wall 4 from the outside.
- FIG. 1 also show that the housing ring 11, in which the cooling grooves 39 are introduced, adjacent to the grinding floor 5 circulating discharge channel 29 directly.
- the vibrating mill 1 has a connection 48 for a blowing medium, in the selected example compressed air, which opens into an annular channel 49 which of the housing ring 11, in which the cooling grooves 39 are introduced, and of the adjacent housing base 12 is bounded, so that a narrow annular gap 50 is formed as a passage to the discharge channel 29.
- a blowing medium in the selected example compressed air
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT07803157T ATE513618T1 (de) | 2006-09-08 | 2007-09-03 | Mahleinheit mit kühleinrichtung |
| AU2007293940A AU2007293940B2 (en) | 2006-09-08 | 2007-09-03 | Grinding unit having cooling device |
| EP07803157A EP2061600B1 (de) | 2006-09-08 | 2007-09-03 | Mahleinheit mit kühleinrichtung |
| CN200780041401XA CN101557876B (zh) | 2006-09-08 | 2007-09-03 | 带有冷却装置的研磨单元 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006042825.0 | 2006-09-08 | ||
| DE102006042825A DE102006042825A1 (de) | 2006-09-08 | 2006-09-08 | Mahleinheit mit Kühleinrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008028883A1 true WO2008028883A1 (de) | 2008-03-13 |
Family
ID=38728922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2007/059170 Ceased WO2008028883A1 (de) | 2006-09-08 | 2007-09-03 | Mahleinheit mit kühleinrichtung |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP2061600B1 (de) |
| CN (1) | CN101557876B (de) |
| AT (1) | ATE513618T1 (de) |
| AU (1) | AU2007293940B2 (de) |
| DE (1) | DE102006042825A1 (de) |
| ES (1) | ES2364592T3 (de) |
| WO (1) | WO2008028883A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009037160A1 (de) | 2007-09-14 | 2009-03-26 | PFAFF AQS GmbH automatische Qualitätskontrollsysteme | Schwingmühle und reinigungsverfahren für schwingmühle |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008035009A1 (de) | 2007-09-14 | 2009-05-20 | PFAFF AQS GmbH automatische Qualitätskontrollsysteme | Schwingmühle |
| CN109482313A (zh) * | 2019-01-14 | 2019-03-19 | 香农工业设备制造南京有限公司 | 一种应用于振动研磨机的自动出料磨盘 |
| DE102019207224A1 (de) * | 2019-05-17 | 2020-11-19 | Thyssenkrupp Ag | Vorrichtung zur Zerkleinerung von Einsatzmaterial sowie Verwendung eines Kühlungsgehäuses an der Vorrichtung |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1372224A (en) * | 1970-12-24 | 1974-10-30 | Kloeckner Humboldt Deutz Ag | Vibration mill with heat-insulated grinding chamber |
| AU5783273A (en) * | 1973-07-06 | 1975-01-09 | Klockner-Humboldt-Deutz Aktiengesellschaft | Grinding process and apparatus therefor |
| DE4343742A1 (de) * | 1993-12-21 | 1995-06-22 | Krupp Polysius Ag | Scheibenschwingmühle |
| US5702060A (en) * | 1992-10-30 | 1997-12-30 | Matteazzi; Paolo | High-energy high-capacity oscillating ball mill |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2579523Y (zh) * | 2002-09-19 | 2003-10-15 | 陈莹 | 内置冷却管式振动磨 |
-
2006
- 2006-09-08 DE DE102006042825A patent/DE102006042825A1/de not_active Ceased
-
2007
- 2007-09-03 AU AU2007293940A patent/AU2007293940B2/en active Active
- 2007-09-03 AT AT07803157T patent/ATE513618T1/de active
- 2007-09-03 WO PCT/EP2007/059170 patent/WO2008028883A1/de not_active Ceased
- 2007-09-03 EP EP07803157A patent/EP2061600B1/de active Active
- 2007-09-03 CN CN200780041401XA patent/CN101557876B/zh active Active
- 2007-09-03 ES ES07803157T patent/ES2364592T3/es active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1372224A (en) * | 1970-12-24 | 1974-10-30 | Kloeckner Humboldt Deutz Ag | Vibration mill with heat-insulated grinding chamber |
| AU5783273A (en) * | 1973-07-06 | 1975-01-09 | Klockner-Humboldt-Deutz Aktiengesellschaft | Grinding process and apparatus therefor |
| US5702060A (en) * | 1992-10-30 | 1997-12-30 | Matteazzi; Paolo | High-energy high-capacity oscillating ball mill |
| DE4343742A1 (de) * | 1993-12-21 | 1995-06-22 | Krupp Polysius Ag | Scheibenschwingmühle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009037160A1 (de) | 2007-09-14 | 2009-03-26 | PFAFF AQS GmbH automatische Qualitätskontrollsysteme | Schwingmühle und reinigungsverfahren für schwingmühle |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2007293940B2 (en) | 2011-04-14 |
| CN101557876B (zh) | 2012-06-13 |
| EP2061600A1 (de) | 2009-05-27 |
| AU2007293940A1 (en) | 2008-03-13 |
| DE102006042825A1 (de) | 2008-03-27 |
| ES2364592T3 (es) | 2011-09-07 |
| CN101557876A (zh) | 2009-10-14 |
| ATE513618T1 (de) | 2011-07-15 |
| EP2061600B1 (de) | 2011-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2063992B1 (de) | Schwingmühle und verfahren zum betrieb einer schwingmühle | |
| EP2178643B1 (de) | Rührwerksmühle | |
| EP3283204B1 (de) | Vorrichtung und verfahren zum mischen, insbesondere zum dispergieren | |
| DE2020649C3 (de) | Rührwerksmühle zum Dispergieren von Festkörperteilchen in einem flüssigen Träger | |
| DE102018122408B4 (de) | Rührwerkskugelmühle, Verschleißschutzhülse für eine Rührwerkskugelmühle und Verfahren zum Herstellen einer Verschleißschutzhülse für eine Rührwerkskugelmühle | |
| EP2061600B1 (de) | Mahleinheit mit kühleinrichtung | |
| DE3326626A1 (de) | Kegelbrecher | |
| EP0913200B1 (de) | Rührwerksmühle | |
| CH715322B1 (de) | Rührwelle für eine Rührwerkskugelmühle, Rührwerkskugelmühle und Verfahren zum Herstellen einer Rührwelle für eine Rührwerkskugelmühle. | |
| DE4432198A1 (de) | Rührwerksmühle | |
| DE19819967A1 (de) | Rührwerksmühle | |
| EP2063993B1 (de) | Schwingmühle mit gleitführung | |
| EP4032615B1 (de) | Rührwerksmühle | |
| EP4059607B1 (de) | Kolloidmühle | |
| DE10131606A1 (de) | Radialpumpe | |
| DE19839210B4 (de) | Rührwerksmühle | |
| EP2185287B1 (de) | Schwingmühle | |
| DE3834456C2 (de) | ||
| EP2203254B1 (de) | Schwingmühle und reinigungsverfahren für schwingmühle | |
| DE3811483A1 (de) | Kugelmuehle | |
| DE686878C (de) | Vorrichtung und Verfahren zum Zerkleinern von schmelzbaren Stoffen, wie Metallen | |
| DE2845084A1 (de) | Ruehrwerksmuehle | |
| DE2530649A1 (de) | Dosiereinrichtung fuer eine elektrisch angetriebene schrotmuehle, insbesondere fuer getreide und koernerfruechte aller art | |
| DE20210781U1 (de) | Mühle für Getreide o.dgl. Haufwerk | |
| DE1978919U (de) | Vorrichtung zum zerkleinern von stoffen, insbesondere schrotmuehle fuer getreide und koernerfruechte. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WWE | Wipo information: entry into national phase |
Ref document number: 200780041401.X Country of ref document: CN |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07803157 Country of ref document: EP Kind code of ref document: A1 |
|
| DPE1 | Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101) | ||
| WWE | Wipo information: entry into national phase |
Ref document number: 1486/DELNP/2009 Country of ref document: IN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2007293940 Country of ref document: AU |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2007803157 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 2007293940 Country of ref document: AU Date of ref document: 20070903 Kind code of ref document: A |