EP1508376A1 - Broyeur agitateur avec un tuyau d'immersion pour l'aspiration et la séparation de matière à broyer et des corps broyants - Google Patents

Broyeur agitateur avec un tuyau d'immersion pour l'aspiration et la séparation de matière à broyer et des corps broyants Download PDF

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Publication number
EP1508376A1
EP1508376A1 EP04017804A EP04017804A EP1508376A1 EP 1508376 A1 EP1508376 A1 EP 1508376A1 EP 04017804 A EP04017804 A EP 04017804A EP 04017804 A EP04017804 A EP 04017804A EP 1508376 A1 EP1508376 A1 EP 1508376A1
Authority
EP
European Patent Office
Prior art keywords
grinding
dip tube
agitator
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
Application number
EP04017804A
Other languages
German (de)
English (en)
Other versions
EP1508376B1 (fr
Inventor
Stefan Dr.-Ing. Gerl
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.)
Maschinenfabrik Gustav Eirich GmbH and Co KG
Original Assignee
Maschinenfabrik Gustav Eirich GmbH and Co KG
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
Priority claimed from EP03019033A external-priority patent/EP1510256A1/fr
Application filed by Maschinenfabrik Gustav Eirich GmbH and Co KG filed Critical Maschinenfabrik Gustav Eirich GmbH and Co KG
Priority to EP04017804A priority Critical patent/EP1508376B1/fr
Priority to PL04017804T priority patent/PL1508376T3/pl
Priority to ES04017804T priority patent/ES2304248T3/es
Publication of EP1508376A1 publication Critical patent/EP1508376A1/fr
Application granted granted Critical
Publication of EP1508376B1 publication Critical patent/EP1508376B1/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
    • 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
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging 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
    • 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
    • B02C17/161—Arrangements for separating milling media and ground material

Definitions

  • Agitator mill of the generic type has a rotationally driven Grind container on, between which and serving as a lid, non-rotatably arranged on the machine stand cover a seal is provided, which serves as a splash guard. With overpressure these can Agitator mills are not operated. The regrind removal works without pressure, d. H. against atmospheric pressure.
  • the invention is based on the object, an agitator mill of the generic type Art to design so that the separation of Mahlos stresses with little design effort and in a very robust design is possible.
  • the essence of the invention is that the grinding stock Mahlosterrorism mixture after the grinding process from the Agitator mill is sucked through a dip tube and the separation the Mahlangesterrorism by weight and inertial forces within the Dip tube takes place.
  • Mahlosterrorism move due to the Gravity and due to the entrainment by the under the dip tube moving Mahlosève bed directly back into the grinding chamber.
  • the realization is very simple and inexpensive. The used Components can be very easily and with little effort against wear to be protected. It can also small Mahlös redesign separated become.
  • the agitator mill according to the invention is preferably used for Grinding materials, the high wear in the agitator mill cause. These are in particular ceramic materials, with water to a relatively low viscosity, so low viscosity Grindings are slurried. The value of such regrind is relatively low, so that the wear costs per unit weight of the ground material must be low.
  • the invention can be used particularly advantageously if according to claim 2 and the grinding container is rotatably driven, so that a Mahlos crusherströmung is forced in the grinding room.
  • the eccentric arrangement of Immersion tube according to claim 3 causes that in the dip tube down falling Mahlospian of the rotating Mahlgut Mahlosève bed be taken along, because the dip tube in the area enters the grinding chamber where the Mahlgut Mahlosève bed performs a particularly intense movement.
  • the eccentric arrangement the at least one agitator according to claim 4 and in particular the Arrangement of the dip tube according to claims 5 and 6 supports this.
  • the agitator mill shown in FIGS. 1 and 2 has a substantially circular cylindrical grinding container 1, whose central longitudinal axis 2 runs vertically, d. H. the grinding container 1 is vertical. He is down closed by a transverse to the axis 2 extending bottom 3. He is supported by a concentric with the axis 2 arranged pivot bearing. 4 from an only indicated machine stand 5 from, d. H. of the Grinding container 1 is rotatable about its central longitudinal axis 2. As a rotary drive for the grinding container 1 is a relative to the machine stand.
  • an agitator 11 is arranged, which is substantially and in the usual way from a stirrer shaft 12 and at this arranged and radially projecting from her stirring tools 13 consists.
  • the stirring tools 13 in the present case are stirring disks with passages 14.
  • the agitator shaft 12 is in her the bottom 3 opposite upper portion in a stirring shaft bearing 15 lying horizontally. This bearing 15 is connected to a non-rotatable in unsupported manner supported against the machine stand 5, frontal cover 16 is held. Between the cover 16 and the upper edge 17 of the grinding container 1 is a splash guard 18, arranged concentrically to the central longitudinal axis 2 of the grinding container 1 is.
  • the splash guard 18 is not connected to the edge 17 of the grinding container 1, since the latter is rotatable and there serving as a lid cover 16 stationary, although removable on the machine stand 5 is arranged. Since the cover 16 with the splash guard 18, the grinding container 1 is not closes pressure resistant, prevails in the grinding container 1 atmospheric pressure; it Air can enter the grinding container 1.
  • the agitator 11 is connected by means of a with the machine stand 5 Agitator drive motor 19 driven, the shaft 20 parallel to the agitator axis 21, but with respect to the latter to an eccentricity e is offset.
  • the drive is by means of a belt drive 22nd transferred to the agitator shaft 12.
  • the drive motor 19 drives the Agitator 11 in the direction of rotation 23, which is rectified with the direction of rotation 10 can be; but the directions of rotation 10 and 23 can also be against each other be directed.
  • a regrind supply line 24 passed and held, the outlet opening 25 in the vicinity the bottom 3 of the grinding container 1 is located.
  • This line 24 is shown in the Embodiment designed as a flow deflector 26.
  • This deflector 26 may have a deflection surface 27, resulting in the result has an impinging - only in Fig. 2 - Mahlgut-Mahlós redesign flow 29 is deflected radially inwards.
  • the administration 24 is disposed in the vicinity of the grinding chamber wall 28.
  • the regrind supply line 24 is ground material by means of a grinding material feed pump 31st fed through the outlet opening 25 in the lower region of the grinding container 1, ie in the vicinity of the bottom 3, enters this.
  • a pressure-tight trained grinding material suction and grinding aid separator 32 are passed from the outside.
  • This is designed as a circular cylindrical dip tube 33, the protrudes into the grinding chamber 34 formed in the grinding container 1.
  • At his bottom located in the grinding chamber 34 end has an inlet opening 35 on.
  • This inlet opening 35 dips into the mirror 36, the by the filling of the grinding chamber 34 with regrind and Mahlöskörpem 37th is formed.
  • the dip tube 33 thus protrudes into the mirror 36 through above limited regrind grinding aid bed into it.
  • the device 32 At the top outside the grinding chamber 34 located end, the device 32 a funnel-shaped upwardly tapering section 38, the all around closed is. From it empties upward a suction line 39, in a regrind suction pump 40 is located.
  • a vibration exciter 41 the Device 32 can put in vibration.
  • the dip tube 33 is - as shown in FIG. 2 - arranged between the deflector 26 and the agitator 11, where a strong compression of the flow in the flow direction 29 takes place.
  • the substantially cylindrical dip tube 33 has a relatively large inner diameter d, which is as large as the arrangement of the dip tube 33 allows at the described location.
  • 10d ⁇ D ⁇ 4d In relation to the inner diameter D of the cylindrical grinding container 1, ie in relation to the inner diameter D of the grinding space 34, the following applies: 10d ⁇ D ⁇ 4d. In particular: 8d ⁇ D ⁇ 5d.
  • the diameter d of the dip tube 33 is - as Fig. 1 reveals - significantly larger than the diameter a of the suction line 39.
  • the diameter d of the dip tube 33 and thus the diameter d of the inlet opening 35 is considerably larger than the diameter b of the largest used Mahltosêt 37. It holds: 10b ⁇ d and preferably 20b ⁇ d.
  • the diameter b of the auxiliary grinding bodies 37 the following applies: b ⁇ 2.0 mm.
  • the diameter b of the fresh, not worn, new auxiliary grinding bodies 37 is in the range of 2 to 10 mm, preferably in the range of 4 to 7 mm. They are usually made of steel or - preferably - ceramic such as Al 2 O 3 or ZrO 2 or other suitable materials.
  • the inlet opening 35 of the dip tube 33 associated End has a recess 42, located in the flow path the Mahlosharm flow 29, which is shown only in Fig. 2 is.
  • the recess 42 in their flow 29th shown correct position, while in Fig. 1, the dip tube 33 together its recess 42 for reasons of clarity in a 90 ° is shown rotated about its longitudinal axis position.
  • the recess 42 is - based on the direction of the flow 29 - on the downstream side of the dip tube 33, so that the recess 42nd from the lower rear portion projecting to the lower rear edge 43 44 of the dip tube 33 relative to the flow 29 covered or is shielded.
  • the dip tube 33 is opposite to the direction the flow 29 of the millbase and the Mahlcousharm 37 inclined, in such a way that seen from top to bottom, the inlet opening 35 opposite the upper end in the tapered section 38 and the suction line 39 leads in the direction of the flow 29.
  • the lower one Edge 43 with the lower rear portion 44 of the dip tube 33 penetrates even deeper into the regrind grinding aid bed below the Mirror 36.
  • the upper portion 45 of the recess 42 is at height of the mirror 36, so that according to the flow direction arrow 46 in the Grinding container 1 incoming air sucked into the dip tube 33 can be when the mirror 36 under the upper edge of the recess 42 drops.
  • the working method is as follows:
  • the grinding material supply line 24 is by means of the grinding stock feed pump 31 millbase in a pumpable state, usually as a suspension, fed. So there is a so-called wet grinding instead.
  • Mahlraum 34 is a bed of Mahlosangen 37 in the form of a Partial filling of the grinding chamber 34 with Mahlos stressesn 37, the upward is limited by the mirror 36.
  • the agitator 11 is in the direction of rotation 23 driven; the grinding container 1 is driven in the direction of rotation 10. The speeds are chosen so that the bed of Mahlos crushern 37 is obtained as a compact bed; the Mahltos crusher so not fluidized in the millbase.
  • the Flow rate of the pumped ground material in the dip tube 33rd because of its large diameter d is very low and there the density of the Mahlos stresses 37 is relatively large compared to the density of the ground material.
  • the regrind has a very low viscosity, similar which is of water.
  • the grinding stock used is preferably ceramic masses ground, which are slurried in water and therefore relatively are fluid. So there are no pasty or high viscosity Milled liquids.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
EP04017804A 2003-08-22 2004-07-28 Broyeur agitateur avec un tuyau d'immersion pour l'aspiration et la séparation de matière à broyer et des corps broyants Expired - Lifetime EP1508376B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP04017804A EP1508376B1 (fr) 2003-08-22 2004-07-28 Broyeur agitateur avec un tuyau d'immersion pour l'aspiration et la séparation de matière à broyer et des corps broyants
PL04017804T PL1508376T3 (pl) 2003-08-22 2004-07-28 Młyn z mieszadłem i rurą nurnikową do odsysania i rozdzielania materiału mielonego i pomocniczych elementów rozdrabniających
ES04017804T ES2304248T3 (es) 2003-08-22 2004-07-28 Molino agitador con tubo de inmersion para la aspiracion y separacion de material molido y cuerpos auxiliares de molienda.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03019033A EP1510256A1 (fr) 2003-08-22 2003-08-22 Broyeur à agitateur avec un tuyau d'immersion pour l'aspiration et la séparation de matière à broyer et des corps broyants
EP03019033 2003-08-22
EP04017804A EP1508376B1 (fr) 2003-08-22 2004-07-28 Broyeur agitateur avec un tuyau d'immersion pour l'aspiration et la séparation de matière à broyer et des corps broyants

Publications (2)

Publication Number Publication Date
EP1508376A1 true EP1508376A1 (fr) 2005-02-23
EP1508376B1 EP1508376B1 (fr) 2008-04-16

Family

ID=34066500

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04017804A Expired - Lifetime EP1508376B1 (fr) 2003-08-22 2004-07-28 Broyeur agitateur avec un tuyau d'immersion pour l'aspiration et la séparation de matière à broyer et des corps broyants

Country Status (3)

Country Link
EP (1) EP1508376B1 (fr)
ES (1) ES2304248T3 (fr)
PL (1) PL1508376T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010015496A1 (fr) * 2008-08-07 2010-02-11 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Dispositif de mélange avec chauffage par induction

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1510256A1 (fr) * 2003-08-22 2005-03-02 Maschinenfabrik Gustav Erich GmbH & Co. KG Broyeur à agitateur avec un tuyau d'immersion pour l'aspiration et la séparation de matière à broyer et des corps broyants

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0369149A1 (fr) * 1988-11-18 1990-05-23 Eirich, Walter Broyeur malaxeur à boulets
EP1323476A1 (fr) * 2001-12-24 2003-07-02 Maschinenfabrik Gustav Eirich GmbH & Co KG Broyeur agitateur avec une pompe d'alimentation et une pompe d'extraction

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0369149A1 (fr) * 1988-11-18 1990-05-23 Eirich, Walter Broyeur malaxeur à boulets
EP1323476A1 (fr) * 2001-12-24 2003-07-02 Maschinenfabrik Gustav Eirich GmbH & Co KG Broyeur agitateur avec une pompe d'alimentation et une pompe d'extraction

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010015496A1 (fr) * 2008-08-07 2010-02-11 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Dispositif de mélange avec chauffage par induction
CN102057748A (zh) * 2008-08-07 2011-05-11 德国古斯塔夫·爱立许机械制造有限公司 具有感应加热的混合装置
RU2512874C2 (ru) * 2008-08-07 2014-04-10 Машиненфабрик Густав Айрих Гмбх Унд Ко. Кг Устройство для смешивания с индукционным нагревом
CN102057748B (zh) * 2008-08-07 2015-11-25 德国古斯塔夫·爱立许机械制造有限公司 具有感应加热的混合装置
US9295109B2 (en) 2008-08-07 2016-03-22 Maschinenfabrik Gustav Eirich Gmbh & Co., Kg Mixing device having induction heating

Also Published As

Publication number Publication date
EP1508376B1 (fr) 2008-04-16
ES2304248T3 (es) 2008-10-01
PL1508376T3 (pl) 2008-09-30

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