EP1110615A1 - Wirbelstrommühle - Google Patents
Wirbelstrommühle Download PDFInfo
- Publication number
- EP1110615A1 EP1110615A1 EP00126687A EP00126687A EP1110615A1 EP 1110615 A1 EP1110615 A1 EP 1110615A1 EP 00126687 A EP00126687 A EP 00126687A EP 00126687 A EP00126687 A EP 00126687A EP 1110615 A1 EP1110615 A1 EP 1110615A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- opening
- mill according
- receiving housing
- mill
- outlet
- 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
Images
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
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
- B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/288—Ventilating, or influencing air circulation
-
- 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
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/20—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
- B02C2013/145—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with fast rotating vanes generating vortexes effecting material on material impact
Definitions
- the invention relates to a mill based on the principle of comminution by means of gas vortices according to the preamble of claim 1.
- Such a mill is also known as an eddy current mill or impact mill.
- the mill means a mill that works on this principle, like it does e.g. from DE 27 36 349 A and DE 197 00 429 A is known. Show Versions with a conical stator compared to those with a circular cylindrical one Stator on a relatively easily adjustable grinding gap.
- the problem with the known mills is that, in addition to the amount of air, which is necessary and optimal for grinding, sucked transport air through the mill must be taken to avoid disturbances such as constipation.
- This additional Air volume that depends on the respective good and the required uniformity the fineness of the product has a negative effect on the dwell time of the goods the mill and thus for optimal grinding.
- the mills must therefore be designed to be large enough to achieve the desired grinding result.
- additives have to be added to the material after grinding such as Borax or boric acid to paper that is used as an insulation material becomes.
- Borax or boric acid to paper that is used as an insulation material becomes.
- the object of the invention is to provide a mill in which for grinding and the air volumes required for the transport can be set separately works without clogging, which is a simple dosage of additives after Grinding permitted and which is gentle on the product in terms of temperature or simple drying is allowed.
- Additives can simply be introduced into the opening via a metering line, for example injected, and are then intimately mixed with the ground material in the mill's housing, where high turbulence prevails.
- the variability of the size of the opening enables the optimal adjustment of the air flow that is fed in after leaving the grinding zone, depending on the material and the throughput.
- Figure 1 shows the longitudinal section through a mill with drive, motor not cut.
- Figure 2 shows the housing of a mill of Figure 1 as an enlarged detail vertically from above, partially cut.
- Figure 3 shows a longitudinal section according to Figure 2 without showing the outlet.
- a mill 3 and a are on a machine frame 1 with feet 2 Motor 4 attached.
- the mill 3 is essentially made up of a receiving housing 5, a stator 6 and a rotor 7.
- the receiving housing 5 which is shown as a detail in Figures 2 and 3, is constructed in a rotationally symmetrical layout and consists of a welded construction. It consists essentially of an outer cylindrical shell 8, which is vertical is arranged and one at the internals and at the bottom Ring disc 9 are attached as a support surface.
- the internals are cylindrical Ring 10 with attached washer 11 which is within and spaced from Sheath 8 is arranged vertically, and as a connection with a horizontal floor 12 the jacket 8 arranged.
- the attachment between the jacket 8 and bottom 12 is with suitable means not shown stabilized.
- Between floor 12, jacket 8, ring 10, washer 11, a bearing housing 22 and the lower edge of rotor 7 and stator 6 is defined by an annular channel 18.
- In the jacket 8 are radially spaced two rectangular openings 13, 14 arranged.
- One opening 13 is designed as an outlet with a rectangular outlet tube 15, which is arranged on the outside of the opening 13.
- a vertical wall of the Outlet pipe 15 tangentially attached to the jacket 8.
- the other opening 14 is designed as an air inlet, in the direction of rotation of the rotor 7 behind the opening 13 arranged and provided with an externally attached nozzle 16, to which a device 17 with a variable opening cross section is attached.
- the Opening 14 extends from the top edge of the floor 12 to approximately a height corresponds to the upper edge of the ring 10 and is approximately twice as wide as high.
- the device 17 is e.g. a slide or a flap suitable.
- a metering line 34 for additives can be arranged to the Spigot 16 or in a pipe which may be upstream in the direction of flow if necessary.
- a partition 19 vertically arranged to be tangential to the ring 10 and parallel to the outlet pipe 15 to the Side of the outlet pipe 15 leads, which is the opening 14 closest.
- a plate 20 perpendicular to the jacket 8 between the ring 10 and the jacket 8 guided.
- the plate 20 extends from the partition 19 to a length correspondingly about 15 ° behind the opening 14, here the extension of the Trailing edge runs through the center of the mill 3.
- the plate 20 In the direction of rotation of the rotor 7 the plate 20 has a slope such that an imaginary extension of the plate 20 in Direction of the slope at the outlet intersects the floor 12.
- a vertical air baffle 21 is arranged between the base 12 and the plate 20. It extends about half its length straight from the end of the Plate 20 facing away from opening 13, towards opening 13 and then curved in a circle over approx. 80 ° to opening 14.
- One end of the air baffle 21 is about 1/5 the width of the bottom 12 from the jacket 8, the other has approximately the same distance from the next side of the opening 14.
- the bearing housing 22 is attached to the disc ring 11.
- a shaft 23 rotatably mounted.
- a pulley 24 attached over a variety of V-belts 25 and the pulley 26, which is fastened to the drive shaft of the motor 4, can be driven.
- the rotor 7 is attached to the upper end of the shaft 23. On the outer circumference of the A large number of grinding media 27 are attached to the rotor 7 in four planes. Above and below the rotor 7 is delimited by a disk 28, 29 in each case.
- the rotor 7 with the Grinding bodies 27 have the contour of a truncated cone.
- Pre-shredding tools 30 and fan blades 31 attached.
- the stator 6 is mounted indirectly on the jacket 8 and with e.g. Screws attached. Between jacket 8 and stator 6 is a sleeve as a screw shaft Spacers arranged. An exchangeable armor 32 is fastened in the stator 6, which may be made up of several individual parts. The armor 32 has a corrugation on, which runs approximately perpendicular to the rotation of the stator 6. In the lid area an inlet opening 33 is arranged in the center of the stator 6.
- the goods are e.g. a pipe, not shown, into the inlet opening 33 entered and in a known manner between the grinding media 27 and Armor 32 ground.
- the ground good together with the good air flow is defined by e.g. a fan, not shown discharged from the mill 3, which with the outlet pipe 15 via pipes and possibly a separator (not shown) is connected.
- the grinding gap is adjustable on the one hand. For this are Different lengths of the sleeves can be used, on which the spacer Stator 6 is mounted.
- the time the goods are in the grinding area is for the grinding result is decisive, which in turn depends on the air flow passing through the grinding area is pulled.
- the cross section of the device 17 is changed so that the optimal air flow according to the flow resistance through the grinding area depending on that through the opening 14.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Crushing And Pulverization Processes (AREA)
- Component Parts Of Construction Machinery (AREA)
- Shovels (AREA)
- Motorcycle And Bicycle Frame (AREA)
Abstract
Description
Weiterhin kann durch die erfindungsgemäße Öffnung relativ kalte Luft unmittelbar nach dem Vermahlen zugeführt werden. Dies bewirkt eine rasche Abkühlung des gemahlenen Gutes auf eine unschädliche Temperatur. Andererseits kann bei weniger temperaturempfindlichen Gütern erwärmte Luft zugeführt werden, wenn eine Nachtrocknung nach dem Vermahlen erforderlich ist.
Zusatzstoffe können einfach über eine Dosierleitung in die Öffnung eingeführt, z.B. gedüst werden und werden dann im Aufnahmegehäuse der Mühle, in dem hohe Turbulenzen vorherrschen, innig mit dem gemahlenen Gut vermischt.
Die Veränderbarkeit der Größe der Öffnung ermöglicht die optimale Anpassung des Luftstroms, der nach Verlassen der Mahlzone zugeführt wird, in Abhängigkeit vom Gut und vom Durchsatz.
Figur 2 zeigt das Aufnahmegehäuse einer Mühle nach Figur 1 als vergrößertes Detail senkrecht von oben, teilweise geschnitten.
Claims (8)
- Mühle nach dem Prinzip der Zerkleinerung mittels Gaswirbeln, mit mindestens einer Mahlstufe, bestehend auseinem kreiszylindrischen oder kegelstumpfförmigen Stator,mit einem antreibbaren Rotor, an dem eine Vielzahl von gegebenenfalls in mehreren Stufen übereinander angeordneten Mahlkörpern befestigt ist,mit einem Aufnahmegehäuse, in dem das fertige Mahlgut aufgefangen und mittels Gasstrom zum Auslaß transportiert wird,und mit dem Auslaß der Mühle nachgeschalteten Vorrichtungen zum Abscheiden des Mahlgutes und zum Absaugen von Gas,
- Mühle nach Anspruch 1, dadurch gekennzeichnet, daß die Öffnung (14) in Drehrichtung des Rotors (7) gesehen kurz hinter der Öffnung (13) angeordnet ist.
- Mühle nach Anspruch 1 und 2, dadurch gekennzeichnet, daß das Aufnahmegehäuse (5) einen im wesentlichen gleichbleibenden Querschnitt aufweist.
- Mühle nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß im Querschnitt des Aufnahmegehäuses (5) eine senkrechte Trennwand (19) so im Bereich des Auslaßstutzens (15) angeordnet ist, daß sie tangential von der inneren Begrenzung des Aufnahmegehäuses (5) zu der Seite des Auslaßstutzens (15) führt, die der Öffnung (14) am nächsten ist.
- Mühle nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß sich oberhalb des Bodens (12) des Aufnahmegehäuses (5) eine Platte (20) von der Trennwand (19) bis hinter die Öffnung (14) erstreckt.
- Mühle nach Anspruch 5, dadurch gekennzeichnet, daß die Platte (20) derart in Drehrichtung des Rotors (7) abfallend geneigt ist, daß die gedachte Verlängerung der Platte (20) beim Auslaß den Boden (12) schneidet.
- Mühle nach Anspruch 1 bis 6, dadurch gekennzeichnet, daß im Bereich der Öffnung (14) ein Leitblech (21) angeordnet ist.
- Mühle nach Anspruch 1 bis 7, dadurch gekennzeichnet, daß am Stutzen (16) oder an einer vorgeschalteten Leitung eine Dosierleitung (34) für Additive angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19962049A DE19962049C2 (de) | 1999-12-22 | 1999-12-22 | Wirbelstrommühle |
DE19962049 | 1999-12-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1110615A1 true EP1110615A1 (de) | 2001-06-27 |
EP1110615B1 EP1110615B1 (de) | 2008-04-16 |
Family
ID=7933839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00126687A Expired - Lifetime EP1110615B1 (de) | 1999-12-22 | 2000-12-05 | Wirbelstrommühle |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1110615B1 (de) |
AT (1) | ATE392257T1 (de) |
DE (2) | DE19962049C2 (de) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002055743A2 (de) * | 2001-01-12 | 2002-07-18 | Babcock-Bsh Gmbh | Anlage zur herstellung von puderzucker aus kristallzucker oder invertiertem zucker |
EP1733625A1 (de) * | 2005-06-16 | 2006-12-20 | Kraft Foods R & D, Inc. Zweigniederlassung München | Verfahren zur Herstellung von Schokoladegranulat Basismaterial für die Schokoladeherstellung |
WO2007118749A1 (de) * | 2006-04-13 | 2007-10-25 | Aufbereitungstechnologie Noll Gmbh | VORRICHTUNG ZUM MISCHEN, MAHLEN, TROCKNEN UND COATIEREN VON UNTERSCHIEDLICHSTEN STOFFEN IM FEINHEITSBEREICH VON 500 µM UND DARUNTER, NÄMLICH PRALLMÜHLE |
EP2139603A1 (de) * | 2007-04-05 | 2010-01-06 | Lehigh Technologies, LLC | Konisch geformte schlagmühle |
US8067051B2 (en) | 2006-06-19 | 2011-11-29 | Kraft Foods R & D, Inc. | Process for milling cocoa shells |
WO2014037237A1 (de) | 2012-09-06 | 2014-03-13 | Thyssenkrupp Resource Technologies Gmbh | Vorrichtung und verfahren zur verarbeitung von ersatzbrennstoffen |
WO2014166797A3 (de) * | 2013-04-10 | 2014-12-04 | Panel Board Holding Bv | Verfahren und vorrichtung zum zerkleinern |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20208606U1 (de) * | 2002-06-03 | 2003-10-16 | Pallmann Maschinenfabrik GmbH & Co KG, 66482 Zweibrücken | Zerkleinerungsvorrichtung |
DE20211899U1 (de) | 2002-08-01 | 2002-09-19 | CEMAG Anlagenbau GmbH, 31789 Hameln | Wirbelstrommühle sowie Rotor und Mahlwerkzeug dafür |
DE102007057565A1 (de) | 2007-11-29 | 2009-06-04 | Microtec Gmbh | Wirbelstrommühle, Rotor und Stator, sowie Mahlbahn-Einsatz und Mahlwerkzeug-Einsatz dafür |
DE102007060072B4 (de) | 2007-12-13 | 2013-03-28 | Lehigh Technologies, Inc. | Wirbelstrommühle |
DE102009020708A1 (de) * | 2009-05-11 | 2010-11-18 | Pallmann Maschinenfabrik Gmbh & Co Kg | Vorrichtung zum Zerkleinern von Aufgabegut |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2206384A1 (de) * | 1971-02-10 | 1972-08-17 | Ultrafine, Paris | Feinmahlwerk |
DE2736349A1 (de) | 1977-08-12 | 1979-02-22 | Krauss Maffei Ag | Prallmuehle |
US4747550A (en) * | 1985-12-07 | 1988-05-31 | Altenburger Maschinen Jackering Gmbh | Grinding mill with multiple milling sections |
DE19700429A1 (de) | 1997-01-09 | 1998-07-23 | Bayer Ag | Mühle |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3702787A1 (de) * | 1987-01-30 | 1988-08-11 | Bayer Ag | Verfahren und vorrichtung zum mikronisieren von feststoffen in strahlmuehlen |
DE4124855C2 (de) * | 1990-09-22 | 2001-02-01 | Buehler Gmbh | Stiftmühle |
DE4327043A1 (de) * | 1993-08-12 | 1995-02-16 | Tribomechanik Gmbh | Geschwindmühle |
-
1999
- 1999-12-22 DE DE19962049A patent/DE19962049C2/de not_active Expired - Fee Related
-
2000
- 2000-12-05 EP EP00126687A patent/EP1110615B1/de not_active Expired - Lifetime
- 2000-12-05 AT AT00126687T patent/ATE392257T1/de active
- 2000-12-05 DE DE50015108T patent/DE50015108D1/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2206384A1 (de) * | 1971-02-10 | 1972-08-17 | Ultrafine, Paris | Feinmahlwerk |
DE2736349A1 (de) | 1977-08-12 | 1979-02-22 | Krauss Maffei Ag | Prallmuehle |
US4747550A (en) * | 1985-12-07 | 1988-05-31 | Altenburger Maschinen Jackering Gmbh | Grinding mill with multiple milling sections |
DE19700429A1 (de) | 1997-01-09 | 1998-07-23 | Bayer Ag | Mühle |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002055743A2 (de) * | 2001-01-12 | 2002-07-18 | Babcock-Bsh Gmbh | Anlage zur herstellung von puderzucker aus kristallzucker oder invertiertem zucker |
WO2002055743A3 (de) * | 2001-01-12 | 2002-11-07 | Babcock Bsh Gmbh | Anlage zur herstellung von puderzucker aus kristallzucker oder invertiertem zucker |
EP1733625A1 (de) * | 2005-06-16 | 2006-12-20 | Kraft Foods R & D, Inc. Zweigniederlassung München | Verfahren zur Herstellung von Schokoladegranulat Basismaterial für die Schokoladeherstellung |
WO2007118749A1 (de) * | 2006-04-13 | 2007-10-25 | Aufbereitungstechnologie Noll Gmbh | VORRICHTUNG ZUM MISCHEN, MAHLEN, TROCKNEN UND COATIEREN VON UNTERSCHIEDLICHSTEN STOFFEN IM FEINHEITSBEREICH VON 500 µM UND DARUNTER, NÄMLICH PRALLMÜHLE |
US8067051B2 (en) | 2006-06-19 | 2011-11-29 | Kraft Foods R & D, Inc. | Process for milling cocoa shells |
EP2139603A1 (de) * | 2007-04-05 | 2010-01-06 | Lehigh Technologies, LLC | Konisch geformte schlagmühle |
EP2139603A4 (de) * | 2007-04-05 | 2014-01-29 | Lehigh Technologies Inc | Konisch geformte schlagmühle |
WO2014037237A1 (de) | 2012-09-06 | 2014-03-13 | Thyssenkrupp Resource Technologies Gmbh | Vorrichtung und verfahren zur verarbeitung von ersatzbrennstoffen |
DE102012108295A1 (de) | 2012-09-06 | 2014-05-15 | Thyssenkrupp Resource Technologies Gmbh | Vorrichtung und Verfahren zur Verarbeitung von Ersatzbrennstoffen |
WO2014166797A3 (de) * | 2013-04-10 | 2014-12-04 | Panel Board Holding Bv | Verfahren und vorrichtung zum zerkleinern |
Also Published As
Publication number | Publication date |
---|---|
DE19962049C2 (de) | 2003-02-27 |
DE19962049A1 (de) | 2001-07-26 |
EP1110615B1 (de) | 2008-04-16 |
ATE392257T1 (de) | 2008-05-15 |
DE50015108D1 (de) | 2008-05-29 |
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