EP1992412B1 - Moulin mélangeur agitateur - Google Patents

Moulin mélangeur agitateur Download PDF

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Publication number
EP1992412B1
EP1992412B1 EP08013806A EP08013806A EP1992412B1 EP 1992412 B1 EP1992412 B1 EP 1992412B1 EP 08013806 A EP08013806 A EP 08013806A EP 08013806 A EP08013806 A EP 08013806A EP 1992412 B1 EP1992412 B1 EP 1992412B1
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EP
European Patent Office
Prior art keywords
grinding
rotor
chamber
auxiliary
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.)
Not-in-force
Application number
EP08013806A
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German (de)
English (en)
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EP1992412A1 (fr
Inventor
Norbert Stehr
Philipp Schmitt
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.)
Buehler AG
Original Assignee
Buehler AG
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
Application filed by Buehler AG filed Critical Buehler AG
Priority to DE502005008983T priority Critical patent/DE502005008983D1/de
Publication of EP1992412A1 publication Critical patent/EP1992412A1/fr
Application granted granted Critical
Publication of EP1992412B1 publication Critical patent/EP1992412B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/166—Mills in which a fixed container houses stirring means tumbling the charge of the annular gap type
    • 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
    • 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
    • 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
    • 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
    • B02C17/163—Stirring means

Definitions

  • the invention relates to a stirred mill according to the preamble of claim 1.
  • Such a stirring mill is from the EP 0 370 022 B1 (Corr. US 5,062,577 ) known.
  • the auxiliary grinding bodies are centrifuged out of the millbase Mahlos emotions flow through the Mahlos emotions-return channels before they reach the protective sieve.
  • the protective screen assumes the function of worn grinding aid bodies that are too light to be thrown off directly through the grinding aid return channels and to serve as a throttling point for establishing a backpressure counteracting the grinding stock flow.
  • the agitator is provided with stirring tools projecting into the outer grinding chamber.
  • an agitating mill which has a rotor which is occupied on its outside with paddle-shaped tools. Within the rotor, a protective sieve is arranged. The rotor consists of axially parallel rods to which the paddle-shaped tools are attached. The material to be ground is fed radially. In this agitator mill is achieved by the paddle-like configuration of the stirring tools, although that the Mahlosterrorism be concentrated in the container wall; a defined grinding, in particular by means of extremely small auxiliary grinding bodies and a reliable separation of Mahlosêt without risk of malfunction is also not possible hereby.
  • Mahlosenia packing is flowed through radially from the millbase, ie the millbase is exposed to a milling process only over a very short path. In the case of a passage of the millbase through the agitator mill only once, only a small grinding progress is achieved.
  • an agitating mill of the general type is known in which the protective sieve is attached to the cup-shaped rotor and is sealed from the inner stator by means of a mechanical seal.
  • the protective sieve thus rotates with the rotor, as a result of which grinding auxiliary bodies reaching it are additionally thrown off.
  • the invention has for its object to design a stirred mill of the generic type so that especially when using Mahlos stresses extremely small diameter grinding and dispersion with narrow particle distribution even with only one Mahlgut facilitator is achieved by the Rrockwerksmühle without the risk of malfunction , in particular by impact of Mahlos stressesn on the protective sieve occurs.
  • the essence of the invention is that grinding auxiliary bodies are located only in the grinding space between the rotor and the container wall, which are concentrated in this grinding space.
  • the development according to claim 10 is particularly advantageous since in particular temperature-sensitive ground material in the grinding material discharge channel is cooled particularly intense without further energy input, ie only during the actual grinding process in the grinding chamber high energy input is suspended.
  • agitator mill has in the usual way a stand 1, on which a cylindrical grinding container 2 can be attached.
  • a stand 1 on which a cylindrical grinding container 2 can be attached.
  • an electric drive motor 3 is housed, which is provided with a V-belt pulley 4, of which via V-belt 5 with a drive shaft 6 rotatably connected V-belt pulley 7 is rotationally driven.
  • the grinding container 2 a cylindrical, a grinding chamber 8 surrounding container wall 9, which is surrounded by a substantially cylindrical cooling jacket 10, on.
  • the container wall 9 and the cooling jacket 10 define a cooling space 11 between them.
  • the lower end of the grinding chamber 8 is formed by an annular bottom plate 12, which is fastened to the grinding container 2 by means of screws 13.
  • the grinding container 2 has an upper annular flange 14, by means of which it is attached to the underside of a support housing 15 by means of screws 16 which is mounted on the stator 1 of the agitator mill.
  • the grinding chamber 8 is closed by means of a lid 17.
  • the support housing 15 has a middle bearing and seal housing 18 which is arranged coaxially to the central longitudinal axis 19 of the grinding container 2. This bearing and seal housing 18 is penetrated by the likewise coaxial to the axis 19 extending drive shaft 6, to which a stirrer 20 is mounted. In the grinding chamber 8 adjacent region of the bearing and seal housing 18 opens a regrind supply line 21 a.
  • a projecting into the grinding container 2 approximately pot-shaped, cylindrical inner stator 22 is arranged coaxially to the axis 19 an outer wall 23 and within this outer wall 23 has a cylindrical inner shell 24.
  • the outer wall 23 and the inner shell 24 define between them a cooling space 25 of the inner stator 22.
  • the cooling space 25 is supplied with cooling water via a cooling water supply port 26, which is discharged via a cooling water discharge port 27.
  • the cooling space 11 of the grinding container 2 is supplied with cooling water via a cooling water supply pipe 28, which is discharged via a cooling water discharge pipe 29.
  • a protective screen 30 is arranged, which is connected to a regrind discharge line 31.
  • the drain line 31 is provided in the region of the bottom plate 12 with a retaining bracket 32 which is releasably connected by means of screws 33 with the bottom plate 12.
  • the protective sieve 30 is sealed against the inner stator 22 by means of a seal 34 and can be pulled out after loosening the screws 33 together with the drain line 31 down from the inner stator.
  • the agitator 20 is cup-shaped in its basic structure, d. H. it has a substantially annular cylindrical rotor 35. At its upper end, the agitator 20 has a lid-like end part 36 of the rotor 35. In the agitator 20, in the transition region between the cover-like end part 36 and the annular cylindrical, ie tubular rotor 35, a Mahlwhis stresses recirculation device 37 is arranged.
  • a (D9 - D35) / 2
  • D9 is the diameter of the container wall 9, that is, the outer diameter of the grinding chamber 8
  • D35 denotes the outer diameter of the rotor 35, ie the inner diameter of the grinding chamber
  • the inside of the container wall 9 is cylindrical smooth, so has no projecting into the annular grinding chamber 8 tools.
  • projecting pin-shaped tools 38 are mounted on the likewise cylindrical outer side of the rotor 35 radially to the central longitudinal axis 19 in the grinding chamber 8 . They extend close to the container wall 9, to which they release only a structurally predetermined gap 39 with a gap width b. As Fig. 3 can be removed, the tools 38 are mounted helically on the rotor surface.
  • the tools 38 which are arranged in the first region 40 assigned to the closure part 36 are arranged on a first helix 41 designed in such a way that they rotate on the agitator 20 and thus of the rotor 35 in the direction of rotation 42 on the auxiliary grinding bodies 43 with a diameter located in the grinding chamber 8 c a in the flow direction 44 of the material to be ground down, ie to the bottom plate 12 out, directed conveying action on the auxiliary grinding body 43 exercise.
  • This first area 40 with the arrangement of the tools 38 on the first helix 41 extends approximately to the lower side of the return device 37, such as Fig. 3 is removable.
  • the tools 38 are arranged on a second, oppositely directed helical line 46 so that they exert a pulse directed counter to the flow direction 44 of the millbase in the direction of rotation 42 on the grinding aid bodies 43 when the agitator 20 is driven ,
  • Fig. 3 results in the circumferential direction of the rotor 35 adjacent tools 38 on both the first helical line 41 and on the second helix 46 in the direction of the central longitudinal axis 19 are arranged overlapping each other, so that upon rotation of the rotor 35, the container wall 9 completely from the Tools 38 is swept over.
  • a ring-cylindrical Mahlgut-Ablite channel 47 is formed between the rotor 35 and the outer wall 23 of the inner stator 22 .
  • pin-shaped stripping tools 48 attached on the outer wall 23 of the inner stator 22 .
  • adjacent stripping tools 48 in the direction of the central longitudinal axis 19 are arranged overlapping each other, so that in one revolution of the rotor 35 whose wall is completely swept by these tools 48.
  • the stripping tools 48 have opposite the inner stator 22 to a gap 49, whose gap width e is only as large as it is structurally necessary.
  • the auxiliary grinding body 43 applies in relation to the diameter c: 4c ⁇ b ⁇ 6c, with the use of particularly small auxiliary grinding bodies 43 as the minimum boundary condition: 1.0 mm ⁇ b ⁇ 2.0 mm.
  • the auxiliary grinding body 43 is: 4c ⁇ e ⁇ 6c, whereby the following also applies here for extremely small auxiliary grinding bodies 43: 1.0 mm ⁇ e ⁇ 2.0 mm.
  • the tools 38 constantly swirl the grinding aid body packing in the grinding chamber 8. The scraper tools scrape due to the small gap width e the rotor 35 while driving it as it were. If Mahlös stresses 43 extremely small diameter c, so micro-Mahlos emotions be used, then applies to their diameter c: 20 microns ⁇ c ⁇ 100 microns.
  • the grinding chamber 8 is connected to the discharge channel 47 by means of a deflection channel 50 whose width - as out Fig. 2 shows that corresponds approximately to the discharge channel 47. This deflection channel 50 thus surrounds the rotor 35 at its free lower end.
  • the grinding chamber 8 is adjacent to the deflection channel 50 substantially closed by means of a radially extending to the axis 19 bottom surface 51, in the immediate vicinity of the lowest, so next adjacent tool 38 rotates, the distance g to the bottom surface 51 about the gap widths b and e corresponds. This ensures that also in this area, ie immediately before the entry into the deflection channel 50, Mahlös stresses 43rd be accelerated radially outward, so be promoted by the deflection channel 50 away.
  • the cylindrical protective sieve 30 consists of a stack of annular discs 52, between each of which a separating gap 53 is released, whose width is smaller than the diameter c of the smallest grinding auxiliary body 43 used.
  • the stack of annular discs 52 is the front side, so on the shaft 6 facing side, closed by a closure plate 54.
  • the protective screen 30 is disposed inside the return device 37.
  • grinding aid return channels 55 are formed in the return device 37.
  • Their respective inlet opening 56 is located immediately adjacent to the return channel 47 and the protective screen 30.
  • Their respective outlet opening 57 opens into the in the initial region of the grinding chamber 8, in the first region 40 of the helical arrangement of the tools 38th Wie Fig. 3 can be removed, the respective outlet openings 57 are - in relation to the direction of rotation 42 - immediately before one or more tools 38, so received back through a discharge channel 47 Mahltos stresses 43 immediately after their exit from the outlet opening 57 a delivery pulse in the flow direction 44.
  • the ground material flows through the grinding chamber 8 corresponding to the flow direction 44 coming from the grinding material supply line 21 through a Mahlgut feed space 58 between the end portion 36 of the agitator 20 and the lid 17, the first portion 40 and the second portion 45 of the grinding chamber 8 down through the deflection channel 50 radially inwardly and from there through the grinding stock discharge channel 47 up to a formed between the end portion 36 and the inner stator 22, directed substantially radially inward to the protective sieve 30 directed AbströmKanal 59. Then it enters through the protective sieve 30 in the grinding stock discharge line 31 and through this from the agitator mill.
  • the material to be ground is ground in rotationally driven agitator 20 in cooperation with the auxiliary grinding bodies 43.
  • the auxiliary grinding bodies 43 receive tangential pulses which convey them in the direction of the container wall 9.
  • a compression of the auxiliary grinding bodies 43 occurs in the radially outer region of the grinding chamber 8, as indicated in the drawing. Due to the small width b of the gap 39 between the tools 38 and the container wall 9 no deposits of grinding auxiliary bodies 43 occur on the container wall 9; also Mahltos stresses 43 thrown there are repeatedly activated and taken away.
  • Mahlosharm 43 get into the regrind discharge channel 47, they are promoted there by the stripping tools 48 with the ground material through the entire stripping channel 47. They are thrown off again by the return device 37 into the first region 40 of the grinding chamber 8.
  • the embodiment according to Fig. 5 is different from the after Fig. 2 only in that in the rotor 35 'distributed over the axial length and over its circumference distributed through holes formed additional small Mahltos emotions return transport channels 60 are formed with a diameter h of 5.0 to 30.0 mm.
  • the small Mahltos emotions return transport channels 60 are arranged on helical lines, wherein circumferentially adjacent channels 60 overlap each other, so that nevertheless arrived in the Mahlgut-discharge channel 47 and centrifuged on the rotor 35 Mahlosharm 43 mandatory on at least one such Pass channel 60, through which they can be thrown back into the outer grinding chamber 9.
  • the embodiment according to Fig. 7 is different from the after Fig. 2 only in that the protective screen 30 'in a conventional manner has a connected to the inner stator 22 supporting body 61 which is provided with slot-shaped openings 62.
  • a very thin sheet or a film 63 is arranged, which is provided with very fine separation slots 64, whose width is not shown in the drawing in any case smaller than the diameter c of the smallest Mahltos stresses 43rd
  • the agitator mill after Fig. 8 is different from the after Fig. 2 in that the rotor 35 'is the Mahltosterrorism return transport channels 60 according to the embodiment in Fig. 5 and the protective screen 30 'according to the embodiment according to Fig. 7 having.
  • the design after Fig. 9 basically corresponds to the after Fig. 5 and 7 that is, the rotor 35 'is provided with the auxiliary grinding body return transport channels 60.
  • the protective screen 30 is in this case not attached to the inner stator 22, but in the end part 36 of the rotor 35 ', in which a generally all protective screens 30, 30', 30" enclosing or receiving cylindrical recess 65 is formed .
  • the protective screen 30 has a supporting body 66, which is connected to the terminal part 36 of the rotor 35 'by means of a screw 67.
  • the supporting body 66 is provided with slot-shaped openings 62 and on its cylindrical outer periphery with a foil or a sheet metal 63 is enclosed in the support body 66.
  • the ground material discharge line 31' extends in a sealed manner through the otherwise closed one upper end wall 70 of the inner stator 22 ', until shortly before the facing end wall 71 of the protective screen 30 ".
  • a narrow gap 72 is formed between the regrind discharge line 31 'and this closing wall 71.
  • This gap 72 usually has a width i which is smaller than the smallest diameter c of the auxiliary grinding bodies 43 Width i of the gap 72 must be so small that a sufficiently large pressure loss occurs here at the outflow of the ground material to be ground, so that the material to be ground flows through the protective sieve 30 ".
  • the end wall 71 of this protective sieve 30 "opens frustoconically towards the end wall 70 and delimits at its radially outer region to the end wall 70 an annular gap 73 through which virtually no auxiliary grinding bodies 43 can penetrate during operation of the agitator mill Grinding aid bodies 43 are thrown outwards again through the annular gap 73 and enter the grinding aid return channels 55.
  • the protective sieve 30 "with its foil or its metal sheet 63 is completely in axial overlap with the grinding aid body return channels 55. Should any grinding aid bodies 43 reach the area of the protective sieve 30", then They are also thrown from their film-forming their cylindrical circumference film or sheet 63 in the return channels 55.
  • the millbase has a very low viscosity in the range of 1 to 100 mPas.

Claims (15)

  1. Broyeur mélangeur pour le traitement d'un produit coulant à concasser,
    - comportant un récipient de broyage (2) délimitant par une paroi (9) une chambre de broyage (8) fermée en grande partie, et
    - comportant un mélangeur (20), disposé dans le récipient de broyage (2) de manière à pouvoir être entraîné en rotation dans la direction de rotation (42), réalisé en forme de bol par rapport à un axe médian longitudinal (19) commun, et muni d'un rotor (35, 35') cylindrique annulaire, qui est muni d'outils (38) qui s'étendent jusqu'à proximité de la paroi (9), et
    - comportant un stator intérieur (22, 22'), disposé à l'intérieur du rotor (35, 35'), relié au récipient de broyage (2), muni d'une paroi extérieure (23) fermée,
    - la chambre de broyage (8) annulaire cylindrique, destinée à recevoir des corps de broyage auxiliaires (43) avec un diamètre c, étant réalisée entre la paroi (9) et le rotor (35, 35'), et une chambre intérieure annulaire cylindrique, en forme de fente cylindrique, disposée coaxialement à l'intérieur de la chambre de broyage (8) et reliée à celle-ci via un conduit de dérivation (50), étant réalisée entre le rotor (35, 35') et la paroi extérieure (23) du stator intérieur (22, 22'), et
    - la chambre de broyage (8) étant remplie au moins partiellement par des corps de broyage auxiliaires (43), et
    - une chambre d'admission du produit à concasser (58), montée en amont de la chambre de broyage (8) et débouchant dans celle-ci dans une direction de circulation (44) du produit à concasser, et un filtre de protection (30, 30'') pour le passage du produit à concasser, monté en aval de la chambre intérieure (8) dans la direction de circulation (44), étant disposés sensiblement sur le même côté du récipient de broyage (2), et
    - sachant que dans le mélangeur (20) sont prévus des conduits de retour (55) des corps auxiliaires de broyage, qui sont destinés à renvoyer les corps de broyage auxiliaires (43) hors de la zone du filtre de protection (30, 30'') vers la chambre de broyage (8), et par lesquels la fin de la chambre intérieure est reliée au début de la chambre de broyage (8),
    caractérisé
    - en ce que la chambre intérieure est réalisée sous forme de conduit d'évacuation (47) du produit concassé, le rapport entre le diamètre intérieur d23 du conduit d'évacuation (47) et le diamètre extérieur d35 du conduit d'évacuation (47) étant égal à : 0,8 ≤ d23/d35 ≤ 0,98,
    - en que pour le rapport entre le diamètre intérieur D35 de la chambre de broyage (8) et le diamètre extérieur D9 de la chambre de broyage (8), on applique : 0,6 ≤ D35/D9 ≤ 0,95, et
    - en ce qu'il est prévu des dispositifs destinés à empêcher le débordement des corps de broyage auxiliaires (43) hors de la chambre de broyage (8) dans le conduit d'évacuation (47) du produit concassé.
  2. Broyeur mélangeur selon la revendication 1, caractérisé en ce que les outils (38) attachés au rotor (35, 35') ne laissent libre qu'une petite fente (39) par rapport à la paroi (9), ladite fente (39) entre les outils (38) et la paroi (9) ayant une largeur b, pour laquelle on applique par rapport au diamètre c des corps de broyage auxiliaires (43) : 4c ≤ b ≤ 6c, la largeur b minimum étant de l'ordre de 1,0 mm ≤ b ≤ 2,0 mm.
  3. Broyeur mélangeur selon la revendication 1 ou 2, caractérisé en ce que les outils (38) sont disposés dans une deuxième zone (45) entre les conduits de retour (55) des corps de broyage auxiliaires et le conduit de dérivation (50), en se chevauchant les uns les autres dans la direction circonférentielle du rotor (35, 35') sur une deuxième ligne hélicoïdale (46), de telle sorte que, lorsque le rotor (35, 35') est entraîné en rotation dans une direction de rotation (42), ils exercent sur les corps de broyage auxiliaires (43) une impulsion dans le sens opposé à la direction de circulation (44).
  4. Broyeur mélangeur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la chambre de broyage (8) comporte, en amont du conduit de dérivation (50), un fond (51), sur lequel passe l'outil (38) le plus proche en laissant une distance g.
  5. Broyeur mélangeur selon la revendication 4, caractérisé en ce que pour la distance g entre le fond (51) et l'outil (38) le plus proche par rapport au diamètre c des corps de broyage auxiliaires (43), on applique : 4c ≤ g ≤ 6c, la distance g minimale étant de l'ordre de 1,0 mm ≤ g ≤ 2,0 mm.
  6. Broyeur mélangeur selon la revendication 4 ou 5, caractérisé en ce que le conduit de dérivation (50) débouche hors de la chambre de broyage (8) directement à côté du rotor (35, 35'), et en ce que le fond (51) est disposé radialement à l'extérieur de cet emplacement.
  7. Broyeur mélangeur selon l'une quelconque des revendications 1 à 6, caractérisé en ce que des outils de raclage (48), s'étendant vers le rotor (35, 35'), sont disposés sur le stator intérieur (22, 22'), et en ce que le rotor (35, 35') ne comporte pas d'outils sur sa face intérieure délimitant le conduit d'évacuation (47) du produit concassé.
  8. Broyeur mélangeur selon la revendication 7, caractérisé en ce que les outils de raclage (48), disposés sur le stator intérieur (22, 22'), se chevauchent les uns les autres dans la direction de l'axe médian longitudinal (19) et sont disposés, dans la direction circonférentielle du stator intérieur (22, 22'), sur une ligne hélicoïdale de telle sorte que, lorsque le rotor (35, 35') est entraîné dans la direction de rotation (42), ils exercent sur les corps de broyage auxiliaires (43) une impulsion dirigée dans la direction de circulation (44).
  9. Broyeur mélangeur selon la revendication 7 ou 8, caractérisé en ce que les outils de raclage (48) libèrent par rapport au rotor (35, 35') une fente (49), dont la largeur e par rapport au diamètre c des corps de broyage auxiliaires (43) est de : 4c ≤ e ≤ 6c, la largeur e minimale de ladite fente étant de l'ordre de 1,0 mm ≤ c ≤ 2,0 mm.
  10. Broyeur mélangeur selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le stator intérieur (22, 22') est muni d'une chambre de refroidissement (25).
  11. Broyeur mélangeur selon l'une quelconque des revendications 1 à 10, caractérisé en ce que dans le rotor (35, 35') sont réalisés de petits conduits de retour (60) des corps de broyage auxiliaires, reliant le conduit d'évacuation (47) avec la chambre de broyage (8), et pour le diamètre h desquels on applique : 5,0 mm ≤ h ≤ 30,0 mm.
  12. Broyeur mélangeur selon la revendication 11, caractérisé en ce que les conduits de retour (60) des corps de broyage auxiliaires se chevauchent les uns les autres dans la direction de l'axe médian longitudinal (19) et sont disposés sur une ligne hélicoïdale, qui est ascendante dans la direction de rotation (42) depuis le conduit de dérivation (15) vers le filtre de protection (30, 30', 30'').
  13. Broyeur mélangeur selon l'une quelconque des revendications 1 à 12, caractérisé en ce que pour le diamètre c des corps de broyage auxiliaires (43) on applique : c ≤ 0,3 mm, et de préférence 0,02 mm ≤ c ≤ 0,1 mm.
  14. Broyeur mélangeur selon l'une quelconque des revendications 1 à 13, caractérisé en ce que pour le rapport entre le diamètre intérieur D35 de la chambre de broyage (8) et le diamètre extérieur D9 de la chambre de broyage (8), on applique : 0,7 ≤ D35/D9 ≤ 0,85.
  15. Broyeur mélangeur selon l'une quelconque des revendications 1 à 14, caractérisé en ce que pour le rapport entre le diamètre intérieur d23 du conduit d'évacuation (47) et le diamètre extérieur d35 du conduit d'évacuation (47), on applique : 0,9 ≤ d23/d35 ≤ 0,98.
EP08013806A 2005-10-11 2005-10-11 Moulin mélangeur agitateur Not-in-force EP1992412B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE502005008983T DE502005008983D1 (de) 2005-10-11 2005-10-11 Rührwerksmühle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05792291A EP1943022B1 (fr) 2005-10-11 2005-10-11 Broyeur melangeur
PCT/EP2005/010910 WO2007042059A1 (fr) 2005-10-11 2005-10-11 Broyeur melangeur

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP05792291A Division EP1943022B1 (fr) 2005-10-11 2005-10-11 Broyeur melangeur

Publications (2)

Publication Number Publication Date
EP1992412A1 EP1992412A1 (fr) 2008-11-19
EP1992412B1 true EP1992412B1 (fr) 2010-02-03

Family

ID=35519817

Family Applications (2)

Application Number Title Priority Date Filing Date
EP05792291A Not-in-force EP1943022B1 (fr) 2005-10-11 2005-10-11 Broyeur melangeur
EP08013806A Not-in-force EP1992412B1 (fr) 2005-10-11 2005-10-11 Moulin mélangeur agitateur

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP05792291A Not-in-force EP1943022B1 (fr) 2005-10-11 2005-10-11 Broyeur melangeur

Country Status (7)

Country Link
US (2) US20090179099A1 (fr)
EP (2) EP1943022B1 (fr)
JP (1) JP2009511255A (fr)
KR (2) KR101230133B1 (fr)
CN (1) CN101287554B (fr)
DE (2) DE502005008983D1 (fr)
WO (1) WO2007042059A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021191430A1 (fr) 2020-03-27 2021-09-30 Bühler AG Broyeur à billes à agitateur
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WO2021191430A1 (fr) 2020-03-27 2021-09-30 Bühler AG Broyeur à billes à agitateur
EP4032615A1 (fr) 2021-01-25 2022-07-27 Wilhelm Niemann GmbH & Co KG Broyeur agitateur
DE102021101527A1 (de) 2021-01-25 2022-07-28 Wilhelm Niemann Gmbh & Co. Rührwerksmühle
DE102021101527B4 (de) 2021-01-25 2023-05-17 Wilhelm Niemann Gmbh & Co. Rührwerksmühle

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EP1943022A1 (fr) 2008-07-16
US20090179099A1 (en) 2009-07-16
DE502005008983D1 (de) 2010-03-25
EP1943022B1 (fr) 2010-03-31
EP1992412A1 (fr) 2008-11-19
KR101128541B1 (ko) 2012-03-23
KR101230133B1 (ko) 2013-02-05
US7931222B2 (en) 2011-04-26
KR20100077017A (ko) 2010-07-06
JP2009511255A (ja) 2009-03-19
DE502005009341D1 (de) 2010-05-12
CN101287554A (zh) 2008-10-15
US20100282884A1 (en) 2010-11-11
WO2007042059A1 (fr) 2007-04-19
KR20080069979A (ko) 2008-07-29

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