EP1508376B1 - 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
EP1508376B1
EP1508376B1 EP04017804A EP04017804A EP1508376B1 EP 1508376 B1 EP1508376 B1 EP 1508376B1 EP 04017804 A EP04017804 A EP 04017804A EP 04017804 A EP04017804 A EP 04017804A EP 1508376 B1 EP1508376 B1 EP 1508376B1
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EP
European Patent Office
Prior art keywords
grinding
agitator
mill according
stock
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.)
Expired - Lifetime
Application number
EP04017804A
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German (de)
English (en)
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EP1508376A1 (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
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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
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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

  • One from the EP 0 369 149 B 1 (corresponding to US 4,998,678 ) known agitator mill of the generic type has a rotatably drivable grinding container, 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 agitator mills can not be operated. The regrind removal works without pressure, ie against atmospheric pressure.
  • the invention has the object of providing an agitator mill of the generic type so that the separation of Mahlos stresses with little design effort and in a very robust design is possible.
  • Mahlgut Mahlosterrorism mixture is removed by suction after the milling process from the agitator mill via a dip tube and the separation of Mahlosterrorism by weight and inertial forces within the dip tube.
  • Mahlosterrorism move back due to gravity and due to the entrainment through the moving under the dip tube Mahlosève bed back into the grinding chamber.
  • the realization is very simple and inexpensive. The components to be used can be protected very easily and with little effort against wear. It can also be separated small Mahltosrati.
  • the agitator mill according to the invention is preferably used for grinding materials which cause high wear in the agitator mill. These are, in particular, ceramic masses which are slurried with water to give a relatively low-viscosity, ie low-viscosity, ground material. The value of such ground material is relatively low, so that the cost of wear per unit weight of the ground material must be low.
  • the inventive design, the agitator mill with low wear over a long time is reliable, which is not the case with other Mahltosève-separating devices.
  • the embodiment according to the invention allows a sedimentation of the auxiliary grinding bodies from the millbase in the region of the grinding stock suction and grinding aid separating device. In the dip tube, a pocket in Mahlos emotions bed, in which there are only a few or no Mahlos emotions that could rise with the ground material in the dip tube forms equally.
  • the invention can be used particularly advantageously if according to claim 2, the grinding container is driven in rotation, so that a Mahlbys crusherströmung forced in the grinding chamber.
  • the eccentric arrangement of the dip tube according to claim 3 causes the sinking sinking down in the dip tube Mahlos phenomenon be taken from the rotating Mahlgut Mahlosève bed because the dip tube opens in the area in the grinding chamber, where the Mahlgut Mahlosève bed a performs particularly intense movement.
  • the eccentric arrangement of 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 in the Fig. 1 and 2 shown agitator mill has a substantially circular cylindrical grinding container 1, whose central longitudinal axis 2 extends vertically, ie the grinding container 1 is vertical. It is closed at the bottom by a transverse to the axis 2 extending bottom 3. It is supported by a pivot bearing 4 arranged concentrically with respect to the axis 2 with respect to an only indicated machine stand 5, ie the grinding container 1 is rotatable about its central longitudinal axis 2.
  • the shaft 7 is parallel to the axis 2 and a pinion 8 and attached to the lower outer circumference of the grinding container 1 ring gear 9, the grinding container 1 in Direction of rotation 10 drives. Due to a corresponding reduction ratio of the toothed drive 8 relative to the ring gear 9, the drive of the grinding container 1 can be carried out at a relatively low speed.
  • a pinion 8 can of course also a Reibradtrieb be used.
  • an agitator 11 is arranged, which consists essentially and to the extent in the usual way of an agitator shaft 12 and arranged thereon and radially projecting Rntontechnikmaschineen 13.
  • the agitating tools 13 are agitating disks with passage openings 14.
  • the agitator shaft 12 is mounted lying in its upper region opposite the bottom 3 in a stirring shaft bearing 15. This bearing 15 is supported on a non-rotatable in a manner not shown relative to the machine stand 5, frontal cover 16.
  • a splash guard 18 which is arranged concentrically to the central longitudinal axis 2 of the grinding container 1.
  • the splash guard 18 is not connected to the edge 17 of the grinding container 1, since the latter is rotatable and since 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 does not close the grinding container 1 pressure-resistant, prevails in the grinding container 1 atmospheric pressure; it can enter air in the grinding container 1.
  • the agitator 11 is driven by means connected to the machine stand 5 agitator drive motor 19, whose shaft 20 is parallel to the agitator axis 21, but offset from the latter by an eccentricity e.
  • the drive is transmitted to the agitator shaft 12 by means of a belt drive 22.
  • the drive motor 19 drives the agitator 11 in the direction of rotation 23, which can be rectified with the direction of rotation 10; However, the directions of rotation 10 and 23 may also be directed against each other.
  • a grinding material supply line 24 is passed and held, the outlet opening 25 is located in the vicinity of the bottom 3 of the grinding container 1.
  • This line 24 is formed in the illustrated embodiment as a flow deflector 26.
  • This deflector 26 may have a deflection surface 27, with the result that an impinging - only in Fig. 2 shown - Mahlgut-Mahlcous stresses flow 29 is deflected radially inwardly.
  • the conduit 24 is disposed in the vicinity of the grinding chamber wall 28.
  • the grinding stock feed line 24 is supplied with ground material by means of a grinding stock feed pump 31, which enters through the outlet opening 25 in the lower region of the grinding container 1, ie in the vicinity of the bottom 3 in this.
  • Mahlgut-suction and Mahlosharm-separating device 32 passed from the outside.
  • This is designed as a circular cylindrical dip tube 33 which projects into the grinding chamber 34 formed in the grinding container 1.
  • it has an inlet opening 35.
  • This inlet opening 35 dips into the mirror 36, which is formed by the filling of the grinding chamber 34 with regrind and Mahloskörpem 37.
  • the dip tube 33 thus projects into the through the mirror 36 upwardly limited Mahlgut Mahlos emotions bed.
  • the device 32 At the upper end located outside of the grinding chamber 34, the device 32 has a funnel-shaped upwardly tapering section 38, which is completely closed. From it empties upward a suction line 39, in which a regrind suction pump 40 is located.
  • a vibration exciter 41 is further attached, which can set the device 32 in vibration.
  • the dip tube 33 is - as out Fig. 2 shows - 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
  • 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 grinding auxiliary bodies 37 used.
  • the diameter b of the auxiliary grinding bodies 37 the following applies: b ⁇ 2.0 mm.
  • the diameter b of the unused, so not worn new Mahlcousharm 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 which is located in the flow path of the Mahltos emotions flow 29, the only in Fig. 2 is shown.
  • the recess 42 is shown in its correct flow to 29, while in Fig. 1 the dip tube 33 is shown together with its recess 42 for reasons of clarity in a rotated by 90 ° 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 42 covered by the up to the lower rear edge 43 projecting lower rear portion 44 of the dip tube 33 relative to the flow 29 and is shielded.
  • the recess 42 thus reach no or only a few Mahltos emotions 37.
  • a certain free zone or relief zone is created in the dip tube 33 below the mirror 36 in which there are no or very few Mahlos emotions 37.
  • the dip tube 33 is inclined against the direction of the flow 29 of the ground material and Mahltos emotions 37, in such a way that seen from top to bottom, the inlet opening 35 opposite the upper end in the tapered portion 38 and the suction line 39th in the direction of the flow 29 leads.
  • the lower edge 43 with the lower rear portion 44 of the dip tube 33 thus penetrates even deeper into the Mahlgut Mahlos emotions bed below the Mirror 36.
  • the upper portion 45 of the recess 42 is located at the level of the mirror 36, so that according to the flow direction arrow 46 into the grinding container 1 incoming air can be sucked into the dip tube 33 when the mirror 36 drops below the upper edge of the recess 42.
  • the working method is as follows:
  • ground material in the pumpable state is supplied by means of the grinding stock feed pump 31. So there is a so-called wet grinding instead.
  • the grinding chamber 34 In the grinding chamber 34 is a bed of Mahltosangen 37 in the form of a partial filling of the grinding chamber 34 with Mahltos stressesn 37, which is bounded above by the mirror 36.
  • the agitator 11 is driven in the direction of rotation 23; the grinding container 1 is driven in the direction of rotation 10.
  • the speeds are chosen so that the bed of Mahlös crushern 37 is obtained as a compact bed; the Mahlos emotions are therefore not fluidized in the millbase.
  • the flow rate of the pumped ground material in the dip tube 33 is very low because of its large diameter d and since the density of Mahlos stresses 37 is relatively large compared to the density of the ground material.
  • the regrind has a very low viscosity, which is similar to that of water. Preference is given to grinding ground ceramic masses which are slurried in water and are therefore relatively thin. So no pasty or viscous liquids are ground.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)

Claims (15)

  1. Broyeur agitateur
    - avec un bac à broyer (1)
    -- qui entoure un compartiment à broyer (34) d'un diamètre (D),
    -- qui est fermé en bas au moyen d'un fond (3)
    -- qui présente un couvercle (16) supérieur
    -- qui présente un axe longitudinal central (2), vertical
    - avec un agitateur (11)
    -- qui présente un axe d'agitateur (21) parallèle à l'axe longitudinal central (2) et
    -- qui est équipé d'outils d'agitation (13) dans le compartiment à broyer (34),
    - avec un moteur d'agitateur (19) pour la rotation de l'agitateur (11) autour de son axe d'agitateur (21),
    - avec un conduit d'aliments à broyer (24) débouchant dans le compartiment à broyer (34),
    - avec un remplissage partiel du compartiment à broyer (34) avec des corps auxiliaires (37) d'un diamètre (b), qui peuvent être bougés dans le sens d'un courant (29) dans un lit de corps auxiliaires d'aliments,
    - avec un dispositif d'aspiration des aliments à broyer et de séparation des corps auxiliaires (32) ressortant du compartiment à broyer (34),
    -- qui présente un tuyau d'immersion (33) plongeant dans le lit de corps auxiliaires d'aliments, avec une ouverture d'entrée inférieure (35), avec un diamètre interne (d), duquel dépasse un conduit d'aspiration (39) avec un dispositif d'aspiration d'aliments à broyer (40), au-dessus du bac à broyer (1),
    caractérisé en ce que
    le tuyau d'immersion (33) présente une entaille (42) au niveau de son entrée inférieure (35), qui - relativement au sens du courant (29) - est effectuée sur le côté aval du tuyau d'immersion (33) et
    en ce qu'une zone (44) du tuyau d'immersion (33), se trouvant - relativement au sens du courant (29) - sur le côté amont du tuyau d'immersion (33), contiguë à l'ouverture d'entrée (35), couvre l'entaille (42) dans le sens du courant (29).
  2. Broyeur agitateur selon la revendication 1, caractérisé en ce que le bac à broyer (1) peut âtre mis en rotation au moyen d'un moteur de bac à broyer (6).
  3. Broyeur agitateur selon la revendication 1, caractérisé en ce que le tuyau d'immersion (33) est excentré par rapport à l'axe longitudinal central (2).
  4. Broyeur agitateur selon la revendication 1, caractérisé en ce que l'agitateur (11) est excentré par rapport à l'axe longitudinal central (2).
  5. Broyeur agitateur selon la revendication 1, caractérisé en ce que le conduit d'aliments à broyer est conçu comme un conduit d'aliments à broyer (24) ressortant dans le compartiment à broyer (34).
  6. Broyeur agitateur selon la revendication 5, caractérisé en ce que le tuyau d'immersion (33) est disposé entre l'agitateur (11) et le conduit d'aliments à broyer (24).
  7. Broyeur agitateur selon la revendication 5, caractérisé en ce que le conduit d'aliments à broyer (24) est formé comme un dériveur de courant (26)
  8. Broyeur agitateur selon la revendication 1, caractérisé en ce que le diamètre interne (d) du tuyau d'immersion (33) est grand par rapport au diamètre (b) du plus gand corps auxiliaire (37).
  9. Broyeur agitateur selon la revendication 8, caractérisé en ce que pour le diamètre (d) du tuyau d'immersion (33) par rapport au diamètre (b) du corps auxiliaire (37), on a : d ≥ 10b et de préférence d ≥ 20b.
  10. Broyeur agitateur selon la revendication 1, caractérisé en ce que pour le diamètre (D) du compartiment à broyer (34) par rapport au diamètre (d) du tuyau d'immersion (33), on a : 10d ≥ D ≥ 4d et de préférence 8d ≥ D ≥ 5d.
  11. Broyeur agitateur selon la revendication 1, caractérisé en ce que le tuyau d'immersion (33) est conçu de façon cylindrique sur toute sa longueur.
  12. Broyeur agitateur selon la revendication 1, caractérisé en ce que le tuyau d'immersion (33) présente un bord (43) s'étirant vers le haut dans le sens du courant (29), au niveau de l'ouverture d'entrée (35).
  13. Broyeur agitateur selon la revendication 1, caractérisé en ce qu'un niveau supérieur (45) de l'entaille (42) se trouve au niveau d'un miroir supérieur (36) du lit de corps auxiliaires d'aliments à broyer du compartiment à broyer (34).
  14. Broyeur agitateur selon la revendication 1, caractérisé en ce que le tuyau d'immersion (33) est disposé de façon courbée par rapport à la verticale.
  15. Broyeur agitateur selon la revendication 1, caractérisé en ce que le conduit d'aliments à broyer est conçu comme un conduit d'aliments à broyer (24) allant jusqu'à proximité du fond (3) du compartiment à broyer (34).
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
EP03019033 2003-08-22
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
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 EP1508376A1 (fr) 2005-02-23
EP1508376B1 true EP1508376B1 (fr) 2008-04-16

Family

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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
JP2005066597A (ja) * 2003-08-22 2005-03-17 Maschinenfabrik Gustav Eirich Gmbh & Co Kg 撹拌式ミル

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008041104A1 (de) * 2008-08-07 2010-02-11 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Mischvorrichtung mit Induktionsheizung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3838981A1 (de) * 1988-11-18 1990-05-23 Eirich Walter Ruehrwerkskugelmuehle
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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005066597A (ja) * 2003-08-22 2005-03-17 Maschinenfabrik Gustav Eirich Gmbh & Co Kg 撹拌式ミル
JP4557634B2 (ja) * 2003-08-22 2010-10-06 マシーネンファブリーク・グスタフ・アイリッヒ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング・ウント・コムパニー・コマンディットゲゼルシャフト 撹拌式ミル

Also Published As

Publication number Publication date
EP1508376A1 (fr) 2005-02-23
PL1508376T3 (pl) 2008-09-30
ES2304248T3 (es) 2008-10-01

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