EP0787528A1 - Broyeur à vortex - Google Patents

Broyeur à vortex Download PDF

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Publication number
EP0787528A1
EP0787528A1 EP96119732A EP96119732A EP0787528A1 EP 0787528 A1 EP0787528 A1 EP 0787528A1 EP 96119732 A EP96119732 A EP 96119732A EP 96119732 A EP96119732 A EP 96119732A EP 0787528 A1 EP0787528 A1 EP 0787528A1
Authority
EP
European Patent Office
Prior art keywords
section
rotor
axis
mill according
bottom section
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
Application number
EP96119732A
Other languages
German (de)
English (en)
Other versions
EP0787528B1 (fr
Inventor
Josef Fischer
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0787528A1 publication Critical patent/EP0787528A1/fr
Application granted granted Critical
Publication of EP0787528B1 publication Critical patent/EP0787528B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/282—Shape or inner surface of mill-housings
    • 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
    • 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 an eddy current mill, with a base part which carries a rotor rotatably mounted in a bearing housing and has an upwardly directed, cylindrical wall part which is coaxial with the rotor axis, and with a grinding housing which surrounds the rotor with a conical grinding path and one downwards has directed cylindrical collar which is axially displaceable in the cylindrical wall part and axially adjustable to adjust the grinding gap between the rotor and grinding track.
  • the grinding housing In eddy current mills of this type, the grinding housing must be removed from the base part from time to time so that the inside of the mill, in particular the rotor, is accessible for cleaning and maintenance purposes.
  • the grinding housing has an outwardly projecting flange, which is provided with a plurality of axial bores, following the cylindrical collar. Screws are inserted into these holes, which are screwed into axial threaded holes in the cylindrical wall part. Spacers are inserted between the upward edge of the cylindrical wall part and the flange, by means of which the size of the grinding gap is determined.
  • the screws are first removed and then the cylindrical collar, which forms part of the grinding housing, must be carefully pulled out of the cylindrical wall part in the axial direction upwards. Conversely, to assemble the grinder housing on the bottom part, the cylindrical collar must again be exactly in the axial direction in the cylindrical Wall part to be introduced. Since the grinder housing is relatively heavy and, depending on the size of the mill, can weigh between 60 and 800 kg, assembly is particularly difficult, since hoists, for example a crane, must also be used for this.
  • the invention is therefore based on the object of providing an eddy current mill of the type mentioned at the outset, in which the grinding housing can be removed from the base part in a simple manner or be mounted again on this.
  • the base part below the displacement area, in which the cylindrical collar is displaceable in the cylindrical wall part is divided into an upper base portion and a lower base portion along a separating plane running perpendicular to the rotor axis, both of which are releasably connected to one another and of which the upper bottom section contains the cylindrical wall part and the lower bottom section contains the rotor bearing housing.
  • the entire mill housing consisting of the grinding housing and base part can now be divided and opened at another location for cleaning and maintenance purposes. If cleaning or maintenance is required, the connection between the upper floor section and the lower floor section is released. However, the connection between the grinder housing and the upper bottom section is retained. The grinding housing can now be removed together with the upper bottom section from the lower bottom section. Since the upper bottom section contains the cylindrical wall part, this is practically together with that existing on the grinding housing Collar removed. When dismantling and in particular during assembly, it is no longer necessary to take the cylindrical guide between the collar and the cylindrical wall part into account. This makes disassembly and assembly much easier.
  • the bottom part of the eddy current mill according to the invention consists of an upper bottom section 1a and a lower bottom section 1b.
  • the lower bottom section 1b carries a bearing housing 2 in which the rotor 3 is rotatably mounted.
  • the rotor can be driven from a motor (not shown) via several belts and the pulley 4 provided at the lower end of the rotor shaft.
  • the upper base section 1a contains a cylindrical wall part 5. This is firmly connected to a flange 6 arranged at its lower end.
  • the flange 6 mates with a flange 7 which is fixedly connected to the upper end of the lower bottom section 1b.
  • Several screws 8 are provided for the detachable connection of the two flanges 6, 7.
  • the parting plane E between the upper bottom section 1a and the lower bottom section 1b runs perpendicular to the rotor axis A.
  • the grinding housing 9 has a conical, ie frustoconical grinding path 10. This grinding path 10 surrounds the rotor 3, so that a grinding gap S remains between the grinding tools 3a attached to the rotor 3 and the grinding path 10.
  • the grinding housing 9 also has a downwardly directed cylindrical collar 11 which is axially displaceable in the cylindrical wall part 5.
  • the collar 11 is firmly connected to the grinding housing 9 or forms an integral part of the grinding housing.
  • An outwardly directed flange 12 is provided at the upper end of the collar 11. Between this flange 12 and a further flange 13, which is arranged at the upper end of the cylindrical wall part 5, there are several Spacers 14 arranged.
  • the axial setting between the collar 11 and the cylindrical wall part 5 and thus also the width of the grinding gap S can be changed.
  • the grinding housing 9 is firmly screwed to the upper base section 1a by means of the screws 15.
  • the collar 11 and the cylindrical wall part 5 are arranged coaxially to the rotor axis A.
  • the lower bottom section 1b is screwed to a support frame 16 according to FIG. 1, to which the drive motor (not shown) can also be attached.
  • support plates 17 are attached, which carry a pivot axis 18.
  • the pivot axis 18 extends perpendicular to the rotor axis A. Since the rotor axis A extends vertically in the exemplary embodiment shown, the pivot axis 18 is arranged horizontally.
  • the pivot axis 18 is arranged at a lateral distance from the two bottom sections 1a, 1b. It is expediently provided on or near the parting plane E.
  • the pivot axis 18 is used to mount a pivot arm 19, which partly consists of a lateral extension 6a of the flange 6, which in turn is part of the upper bottom section 1a.
  • the swivel arm 19 is part of a swivel device with which the upper base section 1a and the grinding housing 9 screwed to it can be swiveled upward, as shown in FIG. 1, on the left.
  • the swivel device has a piston-cylinder unit 20 which is arranged between the swivel arm 19 and the support frame 16.
  • the mill housing is to be opened for cleaning or maintenance purposes, then it is only necessary to loosen the screws 8 which connect the flanges 6 and 7 of the two base sections 1a and 1b to one another.
  • the grinding housing remains firmly screwed to the upper bottom section 1a by means of the screws 12, so that no change in the grinding gap S occurs.
  • the piston-cylinder unit 20 is actuated.
  • the swivel arm 19 and thus the upper bottom section 1a connected to it are pivoted upwards together with the grinding housing 9, as shown in FIG. 1, left.
  • the rotor 3 is exposed. It can be cleaned. If necessary, the grinding tools 3a can be replaced.
  • the bottom section 1a is pivoted downward again together with the grinding housing 9 in the opposite direction of the arrow B. After inserting and tightening the screws 8, the grinder is ready for use again. Disassembly and assembly is very easy. The working time required for disassembly or assembly is shortened and the work is made easier by the swivel device 19, 20. In the case of mills of very small design, the pivoting device or at least the piston-cylinder unit 20 can be dispensed with.
  • FIG. 1 A further embodiment of the swivel device is shown in FIG.
  • the swivel arm 19 ' is connected in an articulated manner to the upper base section via an axis 21 running parallel to the swivel axis 18.
  • a parallelogram link 22 is also provided, which is articulated both on the upper base section 1a and on the support frame or its support plates 17 is.
  • the remaining parts of the swivel device and the mill correspond to the embodiment described above, so that they are not described again here.
  • the upper base section 1a and the grinding housing 9 connected to it are always held in a horizontal position, that is to say in a position which they also assume in the fully assembled state.
  • This type of swivel device is particularly suitable for mills of a larger design and for those in which a pure swivel movement of the upper base section 1a and the grinding housing 9 could lead to a collision between these parts and the rotor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
EP96119732A 1996-02-01 1996-12-10 Broyeur à vortex Expired - Lifetime EP0787528B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19603627 1996-02-01
DE19603627A DE19603627C2 (de) 1996-02-01 1996-02-01 Wirbelstrommühle

Publications (2)

Publication Number Publication Date
EP0787528A1 true EP0787528A1 (fr) 1997-08-06
EP0787528B1 EP0787528B1 (fr) 1999-07-14

Family

ID=7784263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96119732A Expired - Lifetime EP0787528B1 (fr) 1996-02-01 1996-12-10 Broyeur à vortex

Country Status (4)

Country Link
EP (1) EP0787528B1 (fr)
AT (1) ATE182088T1 (fr)
DE (1) DE19603627C2 (fr)
ES (1) ES2135837T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008123910A1 (fr) 2007-04-05 2008-10-16 Lehigh Technologies, Llc Broyeur à percussion en forme de cône
EP2065090A1 (fr) * 2007-11-29 2009-06-03 Microtec GmbH Moulin à courant de Foucault
WO2009158482A1 (fr) 2008-06-25 2009-12-30 Lehigh Technologies, Inc. Broyeur à percussion de forme conique
EP2377618A1 (fr) 2010-04-14 2011-10-19 Air Products And Chemicals, Inc. Moulin à impact rotatif
US8067051B2 (en) 2006-06-19 2011-11-29 Kraft Foods R & D, Inc. Process for milling cocoa shells

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7445806B2 (en) 2004-09-02 2008-11-04 Kraft Foods Global Brands Llc Process for selective grinding and recovery of dual-density foods
EP2052778B1 (fr) 2007-10-25 2015-07-01 Lehigh Technologies, Inc. Moulin à courant de Foucault, ainsi qu'outil de broyage et anneau de broyage correspondants
DE102007051393B4 (de) 2007-10-25 2015-03-05 Lehigh Technologies, Inc., (n. d. Ges. d. Staates Delaware) Wirbelstrommühle, sowie Mahlwerkzeug und Mahlring dafür
DE102007060072B4 (de) 2007-12-13 2013-03-28 Lehigh Technologies, Inc. Wirbelstrommühle
DE102009053150A1 (de) 2009-11-05 2011-05-12 Microtec Gmbh Wirbelstrommuehle und Mahlwerkzeug dafür
GB2482032B (en) 2010-07-16 2013-04-10 Kraft Foods R & D Inc Coffee products and related processes
DE102013002237B3 (de) * 2013-02-11 2014-05-22 Microtec Gmbh Sichtermühle
WO2016131433A1 (fr) 2015-02-18 2016-08-25 Pms Handelskontor Gmbh Dispositif de fragmentation
EP3135380B1 (fr) 2015-08-27 2017-10-11 Josef Fischer Dispositif et procédé de broyage cryogénique

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2353907A1 (de) * 1973-10-27 1975-05-07 Krauss Maffei Ag Mahlwerkzeug

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2353907A1 (de) * 1973-10-27 1975-05-07 Krauss Maffei Ag Mahlwerkzeug

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8067051B2 (en) 2006-06-19 2011-11-29 Kraft Foods R & D, Inc. Process for milling cocoa shells
WO2008123910A1 (fr) 2007-04-05 2008-10-16 Lehigh Technologies, Llc Broyeur à percussion en forme de cône
CN101687196B (zh) * 2007-04-05 2012-05-30 利哈伊技术股份有限公司 圆锥形的冲击式磨机
EP2818247A1 (fr) 2007-04-05 2014-12-31 Lehigh Technologies, Inc. Broyeur à percussion en forme de cône
EP2065090A1 (fr) * 2007-11-29 2009-06-03 Microtec GmbH Moulin à courant de Foucault
WO2009158482A1 (fr) 2008-06-25 2009-12-30 Lehigh Technologies, Inc. Broyeur à percussion de forme conique
KR20110041487A (ko) * 2008-06-25 2011-04-21 리하이 테크놀로지즈 인코포레이티드 원뿔형 충격 분쇄기
AU2009262165B2 (en) * 2008-06-25 2013-11-28 Lehigh Technologies, Inc. Conical-shaped impact mill
AU2009262165B9 (en) * 2008-06-25 2014-01-09 Lehigh Technologies, Inc. Conical-shaped impact mill
EP2377618A1 (fr) 2010-04-14 2011-10-19 Air Products And Chemicals, Inc. Moulin à impact rotatif
WO2011128274A1 (fr) 2010-04-14 2011-10-20 Air Products And Chemicals, Inc. Broyeur conique à impact

Also Published As

Publication number Publication date
ATE182088T1 (de) 1999-07-15
EP0787528B1 (fr) 1999-07-14
ES2135837T3 (es) 1999-11-01
DE19603627A1 (de) 1997-08-07
DE19603627C2 (de) 1998-04-23

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