EP0645179A1 - Grinding mill and its use - Google Patents

Grinding mill and its use Download PDF

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Publication number
EP0645179A1
EP0645179A1 EP94114511A EP94114511A EP0645179A1 EP 0645179 A1 EP0645179 A1 EP 0645179A1 EP 94114511 A EP94114511 A EP 94114511A EP 94114511 A EP94114511 A EP 94114511A EP 0645179 A1 EP0645179 A1 EP 0645179A1
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EP
European Patent Office
Prior art keywords
friction
stator
rotor
axis
friction surface
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
EP94114511A
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German (de)
French (fr)
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EP0645179B1 (en
Inventor
Hans Wetzel
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Draiswerke GmbH
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Draiswerke GmbH
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Publication of EP0645179A1 publication Critical patent/EP0645179A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/83—Mixing plants specially adapted for mixing in combination with disintegrating operations
    • B01F33/833—Devices with several tools rotating about different axis in the same receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
    • B01F33/8361—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
    • B01F33/83612—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by crushing or breaking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/86—Mixing heads comprising a driven stirrer
    • B01F33/862—Mixing heads comprising a driven stirrer the stirrer being provided with a surrounding stator

Definitions

  • the invention relates to a grinder according to the preamble of claim 1 and its use according to claim 11.
  • a mixing turbine with a winged rotor is known, which is surrounded by a guide ring serving as a stator at the same height.
  • the guide ring has window-like openings through which at least part of the material to be mixed is ejected radially.
  • the impeller and the guide ring are axially adjustable relative to one another.
  • a pin mill which can be used in a mixer.
  • the rotor is provided with vanes which are arranged such that they can be driven in rotation within a stator.
  • the stator is provided with pins, between which and the radially outer ends of the blades shear gaps are formed.
  • a pin mill for mixers which has a rotor consisting essentially of vanes which are arranged within an annular stator.
  • the rotor and the stator each have teeth distributed around the circumference, which mesh with one another when the rotor rotates.
  • the mills mentioned above are used in particular for the defined distribution of viscous, that is to say flowable, materials on mixed materials. At the same time, they serve to break up mixed agglomerates again.
  • the aforementioned purposes are satisfactorily achieved in numerous applications; for extremely sensitive mix, especially for Appropriate fluid distribution, however, these effects are not achieved satisfactorily.
  • the invention has for its object to design a grinder of the generic type so that an excellent mixing and disagglomerating effect is achieved even under extreme conditions.
  • the frustoconical design of the friction surface ensures that the friction surface has an extension from the mixture inlet side to the mixture outlet side that is greater than the distance from the inlet side to the outlet side, thereby increasing the friction and thus mixing and deagglomerating effect .
  • the taper exerts a force on the material to be mixed, which counteracts the conveying of the material to be mixed from the inlet side to the outlet side, as a result of which the residence time of the material to be mixed in the region of the rotor and thus the mixing and deagglomeration effect is increased.
  • claim 2 lead to a particularly intensive mixing and deagglomeration effect, claim 3 indicating optimal cone opening angles for the friction surface.
  • Claim 4 specifies optimal ranges for the ratio of the rotor diameter to the axial extent of the rotor.
  • Claims 5 to 7 contain an extremely simple possibility of adjusting the gaps between the rotor and the friction surface resulting from the frustoconical configuration of the friction surface.
  • Claims 8 to 10 represent particularly advantageous and inventive measures for supplying liquid in the region of the frustoconical friction surface.
  • Claims 11 and 12 reflect the use of an attrition mill according to the invention in a mixer which can be operated continuously or discontinuously.
  • the largely conventional mixer shown in the drawing has a horizontal, stationary, cylindrical container 1, which is closed at the end and held at the same time by side walls 2, 3 acting as stands. On the side walls 2, 3, bearing blocks 4 are fastened, in which a shaft 5 of a mixer 6, which is arranged concentrically to the container 1, is mounted. It is driven by a drive motor 7 via a V-belt drive 8 and a gear 9.
  • the mixing mechanism 6 has mixing tools 10 which are designed in the form of blades and are held by means of mixing tool carriers 11 which are attached to the shaft 5 and project radially therefrom.
  • the mixing tools 10 themselves are located near the inside of the wall 12 of the container 1.
  • a so-called grinder 15 is installed, which is described in detail below.
  • a flange bearing 16 is attached, to which a motor 17 is flanged.
  • a clutch 18 connects the output shaft of the motor 17 to a drive shaft 19 of the grinder mill 15.
  • This drive shaft 19 passes through the wall 12.
  • the flange bearing 16 of the motor 17 is supported on a mill base plate 22 via bearing supports 20 and a flange ring 21.
  • the entire grinder 15 is attached to this mill base plate 22.
  • the mill base plate 22 is fastened in and in front of an opening 23 of the wall 12.
  • the grinder 15 has a stator 24 and a rotor 25 on its side of the base plate 22 facing away from the motor 17.
  • the stator 24 consists essentially of a stator ring 26 which has a cylindrical outer surface 27 and a frustoconical inner friction surface 28.
  • the side of the ring 26 facing the base plate 22 forms a mixed material inlet side 24a and the side facing away from the base plate (22) forms a mixed material outlet side 24b.
  • the inner friction surface 28 tapers from the entry side 24a to the exit side 24b of the grinder mill 15 at a half cone opening angle ⁇ of 20 ° to 45 ° and preferably 30 °.
  • the stator ring 26 is supported by two support rods 29 with respect to the base plate 22, which are arranged in a radial plane to the shaft 5, so that they do not represent an effective obstacle for mixing tools 10, as can be seen in particular from FIG. 1. They are therefore also in a common plane with the axis 30 of the drive shaft 19.
  • stator ring 26 is completely open in the direction of the axis 30, which is also the axis of the inner friction surface 28. Only two lugs 29a for the support rods protrude slightly into the open cross section.
  • the rotor 25 is designed like a propeller. It has a sleeve-shaped hub 32, which is connected in a rotationally fixed manner to the drive shaft 19 by means of a feather key 31 and to which vanes 33 with a radius c and an axial extent d, which extend approximately radially outward, are attached.
  • These wings 33 have the cross section of an elongated rectangle and are arranged radially to the axis 30. They are - as can be seen in particular from FIG. 4 - inclined or adjusted with respect to the axis 30 in such a way that - with respect to the direction of rotation 34 of the rotor 25 - the lower edge 35 of each wing 33 adjacent to the base plate 22 leads and that of the base plate 22 facing away from the upper edge 36.
  • the blades 33 exert on conveying material a conveying pulse directed in the direction of the axis 30 away from the base plate 22 towards the free end of the grinder mill 15, over which a conveying pulse directed radially to the axis 30 towards the friction surface 28 is superimposed.
  • the wings 33 are provided at their radially outer ends with shear edges 37, which run parallel to the inner friction surface 28 of the stator ring 26 and limit the narrow shear gap 38 with respect to the inner friction surface 28), the width b of which is constant over the length of the shear gap 38 is.
  • the width b is usually 0.5 mm ⁇ b ⁇ 3.0 mm.
  • a sealing sleeve 39 is attached, against which seals 40, 41 bear, which in turn are supported in a through-bore 42 in the base plate 22.
  • a grease chamber 43 is formed, through which a grease connection 44 grease for lubricating the seals 40, 41 can be introduced.
  • a spacer sleeve 45 bears against the sealing sleeve 39, which is supported on its other side against the hub 32 of the rotor 25, 45 spacer disks 46 being arranged between the hub 32 and the spacer sleeve.
  • a cup-shaped fastening sleeve 47 bears against the hub 32 from the free end of the rotor 25, which is connected by means of a cap nut 48 to a threaded pin 49 of the drive shaft 19 and the hub 32 with the wings 33 in the direction of the axis 30 Base plate 22 firmly clamped against the spacer sleeve 45 with the spacer washers 46.
  • a liquid feed device 50 is assigned to the grinder 15, which has a tubular base body 51, which is inserted into a through-bore 52 in the base plate 22 running parallel to the axis 30.
  • a liquid supply connection 53 opens into this tubular base body 51 on the side of the base plate 22 facing away from the stator 24 and rotor 25.
  • a spray valve 54 opens out from the latter, which is a commercially available spray valve 54 which only opens when liquid under pressure is supplied via the supply connection 53, and this closes when no more liquid is supplied under pressure.
  • the distance e of the outlet opening 55 of the valve 54 from the adjacent edge 35 of the wings 33 is very small, namely as small as is structurally possible.
  • the distance e is therefore in the range between 0.5 and 3.0 mm.
  • the average distance f of the outlet opening 55 from the axis 30, ie the distance of the axis 56 of the valve 54 from the axis 30 of the drive shaft 19 is more than half of the maximum radius c of the rotor 25, the valve 54 with its Exit opening 55 is to be arranged radially as far as possible on the outside with respect to the axis 30, ie close to the inner friction surface 28 and thus the shear gaps 38. Since the valve 54 is arranged in a common plane with the support rods 29, the lugs 29a and the drive shaft 19 is a certain distance from the shear gaps 38 is unavoidable for design reasons.
  • the mechanism of action is as follows: The mixing material in the container 1 is circulated and mixed by the mixing tools 10 of the mixing unit 6 and also shifted parallel to the axis 57 of the shaft 5. It is brought into the space 58 between the base plate 22 and the rotor 25 and is fed to the rotor 25.
  • the mixed material is gripped by the vanes 33 and, on the one hand, conveyed in the manner described in the direction of the tapering inner friction surface 28 and at the same time flung radially outward to the axis 30 and fed to the shear gaps 28.
  • the inner friction surface 28 is at least largely closed radially to the axis 30 to the outside and because the inner friction surface 28 tapers in the axial conveying direction 59 of the vanes 33, the material to be mixed is stowed in the stator 24 and not merely in the direction 59 the grinder 15 flung through. Because it is simultaneously conveyed radially outwards, it is subjected to an intensive friction-shear stress in the shear gaps 38. At the same time, the liquid is introduced into the mix through the outlet opening 59 and immediately thereafter enters the shear gap 38. As a result, no agglomerates of the mix can form, not even with very fine mix on the one hand and highly viscous, strongly adhesive liquids on the other. The liquid is applied to the individual mix particles in a very finely divided form. So there is no macro-mixing of mix and liquid with simultaneous agglomerate formation, but a micro-mixing.
  • FIGS. 5 and 6 differs from that according to FIGS. 3 and 4 with regard to the construction of the rotor and stator only in constructive details, which are not important here. Identical parts are therefore provided with identical reference numerals as in FIGS. 3 and 4, while functionally identical but structurally slightly different parts are designated with the same reference number, but additionally with a prime, without requiring a new description in both cases.
  • the embodiment of FIGS. 5 and 6 differs from that of FIGS. 3 and 4 by the type of Hydration.
  • a feed housing 60 is attached to the mill base plate 22 'by means of screws 61, into which a liquid feed connection 53' opens radially.
  • liquid is supplied via a radial channel 62 in the sleeve 39 'and the drive shaft 19' to an axial channel 63 which runs concentrically to the axis 30 in the drive shaft 19 ' .
  • This axial channel 63 ends in the region of the rotor 25 'in radial outlet channels 64, which are arranged as bores adjacent to the lower edge 35 in the wings 33' and end with their outlet openings 55 'in the respective shear gap 38 or in the vicinity of the shear gap 38 .
  • the radial outlet channels 64 ′ can be designed as tubes separate from the vanes 33 ′, which also protrude into the vicinity of the inner friction surface 28 and release the liquid there in the direction of the inner friction surface 28.
  • the liquid is thus added in such a way that it has to pass through together with the mixture over most of the inner friction surface 28 from its inlet side 24a as its wider area to its outlet side 24b as its narrower area.

Abstract

An attrition mill has a rotor (25) essentially comprising blades (33) and an annular stator (24) surrounding the rotor. The inner surface of the stator (24) is constructed as a rubbing surface (28) tapering in a truncated cone shape from a mixing material entry side (24a) to a mixing material exit side (24b). The width b of sheer gaps (38) formed between the blades (33) and the rubbing surface (28) is adjustable. Immediately adjacent to the mixing material entry side (24a) is arranged a liquid feed device (50). <IMAGE>

Description

Die Erfindung betrifft eine Reib-Mühle nach dem Oberbegriff des Anspruches 1 und deren Verwendung nach Anspruch 11.The invention relates to a grinder according to the preamble of claim 1 and its use according to claim 11.

Aus der DE-AS 11 76 614 ist eine Mischturbine mit einem mit Flügeln versehenen Rotor bekannt, die von einem als Stator dienenden Leitring in gleicher Höhe umgeben ist. Der Leitring weist fensterartige Öffnungen auf, durch die zumindest ein Teil des Mischgutes radial ausgeschleudert wird. Um die Überdeckung der Flügel mit den fensterartigen Öffnungen verändern zu können, sind das Flügelrad und der Leitring relativ zueinander axial verstellbar.From DE-AS 11 76 614 a mixing turbine with a winged rotor is known, which is surrounded by a guide ring serving as a stator at the same height. The guide ring has window-like openings through which at least part of the material to be mixed is ejected radially. In order to be able to change the overlap of the blades with the window-like openings, the impeller and the guide ring are axially adjustable relative to one another.

Aus der EP 0 200 003 A1 (entsprechend US-Patent 4 848 919) ist eine Stiftmühle bekannt, die in einem Mischer einsetzbar ist. Der Rotor ist mit Flügeln versehen, die innerhalb eines Stators drehantreibbar angeordnet sind. Der Stator ist mit Stiften versehen, zwischen denen und den radial äußeren Enden der Flügel Scherspalte gebildet sind.From EP 0 200 003 A1 (corresponding to US Pat. No. 4,848,919) a pin mill is known which can be used in a mixer. The rotor is provided with vanes which are arranged such that they can be driven in rotation within a stator. The stator is provided with pins, between which and the radially outer ends of the blades shear gaps are formed.

Aus der DE 40 28 108 C1 ist eine Stiftmühle für Mischer bekannt, die einen im wesentlichen aus Flügeln bestehenden Rotor aufweist, die innerhalb eines ringförmigen Stators angeordnet sind. Der Rotor und der Stator weisen jeweils am Umfang verteilte Zähne auf, die bei der Drehung des Rotors kämmend ineinandergreifen.From DE 40 28 108 C1 a pin mill for mixers is known which has a rotor consisting essentially of vanes which are arranged within an annular stator. The rotor and the stator each have teeth distributed around the circumference, which mesh with one another when the rotor rotates.

Die vorstehend erwähnten Mühlen dienen insbesondere zur definierten Verteilung von viskosen, also fließfähigen Materialien auf Mischgütern. Sie dienen gleichzeitig dazu, Mischgutagglomerate wieder zu zerteilen. Die Vorgenannten Zwecke werden in zahlreichen Anwendungsfällen zufriedenstellend erreicht; für extrem empfindliches Mischgut, insbesondere bei entsprechender Flüssigkeitsverteilung werden diese Effekte aber nicht zufriedenstellend erreicht.The mills mentioned above are used in particular for the defined distribution of viscous, that is to say flowable, materials on mixed materials. At the same time, they serve to break up mixed agglomerates again. The aforementioned purposes are satisfactorily achieved in numerous applications; for extremely sensitive mix, especially for Appropriate fluid distribution, however, these effects are not achieved satisfactorily.

Der Erfindung liegt die Aufgabe zugrunde, eine Reib-Mühle der gattungsgemäßen Art so auszugestalten, daß auch unter extremen Bedingungen eine hervorragende Misch- und Desagglomerier-Wirkung erreicht wird.The invention has for its object to design a grinder of the generic type so that an excellent mixing and disagglomerating effect is achieved even under extreme conditions.

Diese Aufgabe wird bei einer Reibmühle nach dem Oberbegriff des Anspruches 1 mit den Merkmalen im Kennzeichnungsteil des Anspruches 1 gelöst. Durch die kegelstumpfförmige Ausgestaltung der Reibfläche wird erreicht, daß die Reibfläche von der Mischgut-Eintrittsseite bis zur Mischgut-Austrittsseite eine Erstreckung hat, die größer ist als der Abstand von der Eintrittsseite zur Austrittsseite, wodurch der Reib- und damit Misch- und Desagglomeriereffekt vergrößert wird. Weiterhin wird durch die Verjüngung eine dem Hindurchfördern des Mischgutes von der Eintrittsseite zur Austrittsseite entgegenwirkende Kraft auf das Mischgut ausgeübt, wodurch die Verweilzeit des Mischgutes im Bereich des Rotors und damit der Misch- und Desagglomeriereffekt vergrößert wird.This object is achieved in a attritor according to the preamble of claim 1 with the features in the characterizing part of claim 1. The frustoconical design of the friction surface ensures that the friction surface has an extension from the mixture inlet side to the mixture outlet side that is greater than the distance from the inlet side to the outlet side, thereby increasing the friction and thus mixing and deagglomerating effect . Furthermore, the taper exerts a force on the material to be mixed, which counteracts the conveying of the material to be mixed from the inlet side to the outlet side, as a result of which the residence time of the material to be mixed in the region of the rotor and thus the mixing and deagglomeration effect is increased.

Die Maßnahmen nach Anspruch 2 führen zu einer besonders intensiven Misch- und Desagglomerierwirkung, wobei Anspruch 3 optimale Kegelöffnungswinkel für die Reibfläche angibt. Anspruch 4 gibt optimale Bereiche für das Verhältnis von Rotordurchmesser zu axialer Erstreckung des Rotors an.The measures according to claim 2 lead to a particularly intensive mixing and deagglomeration effect, claim 3 indicating optimal cone opening angles for the friction surface. Claim 4 specifies optimal ranges for the ratio of the rotor diameter to the axial extent of the rotor.

Die Ansprüche 5 bis 7 beinhalten eine sich aus der kegelstumpfförmigen Ausgestaltung der Reibfläche ergebende äußerst einfache Möglichkeit der Einstellung der Spalte zwischen Rotor und Reibfläche. Die Ansprüche 8 bis 10 geben besonders vorteilhafte und erfinderische Maßnahmen zur Zuführung von Flüssigkeit in den Bereich der kegelstumpfförmigen Reibfläche wieder.Claims 5 to 7 contain an extremely simple possibility of adjusting the gaps between the rotor and the friction surface resulting from the frustoconical configuration of the friction surface. Claims 8 to 10 represent particularly advantageous and inventive measures for supplying liquid in the region of the frustoconical friction surface.

Die Ansprüche 11 und 12 geben die Verwendung einer erfindungsgemäßen Reib-Mühle in einem Mischer wieder, der kontinuierlich oder diskontinuierlich betreibbar sein kann.Claims 11 and 12 reflect the use of an attrition mill according to the invention in a mixer which can be operated continuously or discontinuously.

Weitere Merkmale, Vorteile und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen anhand der Zeichnung. Es zeigt

  • Fig. 1 einen vertikalen Längsschnitt durch einen Mischer,
  • Fig. 2 einen Querschnitt durch den Mischer entsprechend der Schnittlinie II-II in Fig. 1,
  • Fig. 3 einen Teilschnitt durch Fig. 1 entsprechend der Schnittlinie III-III,
  • Fig. 4 eine Draufsicht auf die Reib-Mühle entsprechend dem Sichtpfeil IV in Fig. 3,
  • Fig. 5 einen Teilschnitt durch eine weitere Ausführungsform einer Reib-Mühle in einer Darstellung entsprechend Fig. 3 und
  • Fig. 6 eine Draufsicht auf die Reib-Mühle gemäß dem Sichtpfeil VI in Fig. 5.
Further features, advantages and details of the invention result from the following description of exemplary embodiments with reference to the drawing. It shows
  • 1 is a vertical longitudinal section through a mixer,
  • 2 shows a cross section through the mixer according to section line II-II in FIG. 1,
  • 3 shows a partial section through FIG. 1 along the section line III-III,
  • 4 shows a top view of the grinder according to the arrow IV in FIG. 3,
  • Fig. 5 is a partial section through a further embodiment of a grinder in a representation corresponding to Fig. 3 and
  • 6 is a plan view of the grinder according to arrow VI in FIG. 5.

Der in der Zeichnung dargestellte, weitgehend konventionelle Mischer, weist einen horizontalen, stationären, zylindrischen Behälter 1 auf, der von gleichzeitig als Ständer wirkenden Seitenwänden 2, 3 stirnseitig abgeschlossen und gleichzeitig gehalten wird. An den Seitenwänden 2, 3 sind Lagerböcke 4 befestigt, in denen eine konzentrisch zum Behälter 1 angeordnete Welle 5 eines Mischwerks 6 gelagert ist. Sie wird von einem Antriebsmotor 7 über einen Keilriementrieb 8 und ein Getriebe 9 angetrieben. Das Mischwerk 6 weist schaufelartig ausgebildete Mischwerkzeuge 10 auf, die mittels an der Welle 5 angebrachter und radial von dieser abstehender Mischwerkzeug-Träger 11 gehalten werden. Die Mischwerkzeuge 10 selber befinden sich in der Nähe der Innenseite der Wand 12 des Behälters 1.The largely conventional mixer shown in the drawing has a horizontal, stationary, cylindrical container 1, which is closed at the end and held at the same time by side walls 2, 3 acting as stands. On the side walls 2, 3, bearing blocks 4 are fastened, in which a shaft 5 of a mixer 6, which is arranged concentrically to the container 1, is mounted. It is driven by a drive motor 7 via a V-belt drive 8 and a gear 9. The mixing mechanism 6 has mixing tools 10 which are designed in the form of blades and are held by means of mixing tool carriers 11 which are attached to the shaft 5 and project radially therefrom. The mixing tools 10 themselves are located near the inside of the wall 12 of the container 1.

Auf der Oberseite des Behälters 1 ist ein Materialeinlaß 13 angeordnet; an der Unterseite ist ein Materialauslaß 14 vorgesehen. Der Mischer wird chargenweise als sogenannter Turbulent-Mischer betrieben, d.h. es handelt sich um einen Wurfmischer, bei dem die einzelnen Mischgutpartikel hochgeworfen werden und auf einer parabelförmigen Wurfbahn wieder in ein Mischgutbett gelangen. Um diesen Effekt zu erreichen, werden die Mischwerkzeuge 10 mit überkritischer Umfangsgeschwindigkeit angetrieben, die - ausgedrückt in der dimensionslosen Froude-Kennzahl - etwa Fr = 2 - 6 beträgt. Die Froude-Kennzahl ist definiert

Fr = W²: R x g

Figure imgb0001


wobei gilt

W =
Umfangsgeschwindigkeit der radial äußeren Enden der Mischwerkzeuge 10 in m/s
R =
Radius des Mischwerks 6 in m
g =
Erdbeschleunigung in m/s².
On the top of the container 1, a material inlet 13 is arranged; a material outlet 14 is provided on the underside. The mixer will Operated in batches as a so-called turbulent mixer, ie it is a throwing mixer in which the individual mixed material particles are thrown up and return to a mixed material bed on a parabolic trajectory. In order to achieve this effect, the mixing tools 10 are driven at a supercritical peripheral speed, which - expressed in the dimensionless Froude index - is approximately Fr = 2-6. The Froude key figure is defined

Fr = W²: R xg
Figure imgb0001

where applies
W =
Circumferential speed of the radially outer ends of the mixing tools 10 in m / s
R =
Radius of the mixer 6 in m
g =
Acceleration due to gravity in m / s².

In die Wand 12 des Behälters 1 ist eine sogenannte Reib-Mühle 15 eingebaut, die nachfolgend im einzelnen beschrieben wird. Auf der Außenseite der Wand 12 des Behälters 1, und zwar im Bereich unterhalb der Welle 5 (siehe Fig. 2) ist ein Flanschlager 16 angebracht, an dem ein Motor 17 angeflanscht ist. Eine Kupplung 18 verbindet die Abtriebswelle des Motors 17 mit einer Antriebswelle 19 der Reib-Mühle 15. Diese Antriebswelle 19 durchsetzt die Wand 12. Das Flanschlager 16 des Motors 17 stützt sich über Lagerstützen 20 und einen Flanschring 21 auf einer Mühlen-Grundplatte 22 ab. An dieser Mühlen-Grundplatte 22 ist die gesamte Reib-Mühle 15 befestigt. Die Mühlen-Grundplatte 22 wird in und vor einer Öffnung 23 der Wand 12 befestigt.In the wall 12 of the container 1, a so-called grinder 15 is installed, which is described in detail below. On the outside of the wall 12 of the container 1, specifically in the area below the shaft 5 (see FIG. 2), a flange bearing 16 is attached, to which a motor 17 is flanged. A clutch 18 connects the output shaft of the motor 17 to a drive shaft 19 of the grinder mill 15. This drive shaft 19 passes through the wall 12. The flange bearing 16 of the motor 17 is supported on a mill base plate 22 via bearing supports 20 and a flange ring 21. The entire grinder 15 is attached to this mill base plate 22. The mill base plate 22 is fastened in and in front of an opening 23 of the wall 12.

Die Reib-Mühle 15 weist auf ihrer dem Motor 17 abgewandten Seite der Grundplatte 22 einen Stator 24 und einen Rotor 25 auf. Der Stator 24 besteht im wesentlichen aus einem Stator-Ring 26, der eine zylindrische Außenfläche 27 und eine kegelstumpfförmige innere Reibfläche 28 aufweist. Die der Grundplatte 22 zugewandte Seite des Rings 26 bildet eine Mischgut-Eintrittsseite 24a und die der Grundplatte (22) abgewandte Seite bildet eine Mischgut-Austrittsseite 24 b. Die innere Reibfläche 28 verjüngt sich von der Eintrittsseite 24a zur Austrittsseite 24b der Reib-Mühle 15 hin unter einem halben Kegelöffnungswinkel a von 20° bis 45° und bevorzugt 30°. Der Stator-Ring 26 ist über zwei Stützstäbe 29 gegenüber der Grundplatte 22 abgestützt, die in einer Radialebene zur Welle 5 angeordnet sind, so daß sie kein effektives Hindernis für Mischwerkzeuge 10 darstellen, wie insbesondere aus Fig. 1 hervorgeht. Sie befinden sich also auch in einer gemeinsamen Ebene mit der Achse 30 der Antriebswelle 19.The grinder 15 has a stator 24 and a rotor 25 on its side of the base plate 22 facing away from the motor 17. The stator 24 consists essentially of a stator ring 26 which has a cylindrical outer surface 27 and a frustoconical inner friction surface 28. The side of the ring 26 facing the base plate 22 forms a mixed material inlet side 24a and the side facing away from the base plate (22) forms a mixed material outlet side 24b. The inner friction surface 28 tapers from the entry side 24a to the exit side 24b of the grinder mill 15 at a half cone opening angle α of 20 ° to 45 ° and preferably 30 °. The stator ring 26 is supported by two support rods 29 with respect to the base plate 22, which are arranged in a radial plane to the shaft 5, so that they do not represent an effective obstacle for mixing tools 10, as can be seen in particular from FIG. 1. They are therefore also in a common plane with the axis 30 of the drive shaft 19.

Innerhalb der inneren Reibfläche 28 ist der Stator-Ring 26 in Richtung der Achse 30, die auch die Achse der inneren Reibfläche 28 ist, völlig offen. Lediglich zwei Ansätze 29a für die Stützstäbe ragen geringfügig in den offenen Querschnitt.Within the inner friction surface 28, the stator ring 26 is completely open in the direction of the axis 30, which is also the axis of the inner friction surface 28. Only two lugs 29a for the support rods protrude slightly into the open cross section.

Der Rotor 25 ist propellerartig ausgebildet. Er weist eine mit der Antriebswelle 19 mittels einer Paßfeder 31 drehfest verbundene hülsenförmige Nabe 32 auf, an der sich etwa radial nach außen erstreckende Flügel 33 mit einem Radius c und einer axialen Erstreckung d angebracht sind. Diese Flügel 33 haben den Querschnitt eines langgestreckten Rechtecks und sind radial zur Achse 30 angeordnet. Sie sind weiterhin - wie insbesondere aus Fig. 4 hervorgeht - gegenüber der Achse 30 derart geneigt bzw. angestellt, daß - bezogen auf die Drehrichtung 34 des Rotors 25 - die der Grundplatte 22 benachbarte untere Kante 35 jedes Flügels 33 voreilt und die der Grundplatte 22 abgewandte obere Kante 36 nacheilt. Dadurch üben die Flügel 33 auf Mischgut einen in Richtung der Achse 30 von der Grundplatte 22 weg zum freien Ende der Reib-Mühle 15 hin gerichteten Förderimpuls aus, dem ein radial zur Achse 30 zur Reibfläche 28 hin gerichteter Förderimpuls überlagert wird.The rotor 25 is designed like a propeller. It has a sleeve-shaped hub 32, which is connected in a rotationally fixed manner to the drive shaft 19 by means of a feather key 31 and to which vanes 33 with a radius c and an axial extent d, which extend approximately radially outward, are attached. These wings 33 have the cross section of an elongated rectangle and are arranged radially to the axis 30. They are - as can be seen in particular from FIG. 4 - inclined or adjusted with respect to the axis 30 in such a way that - with respect to the direction of rotation 34 of the rotor 25 - the lower edge 35 of each wing 33 adjacent to the base plate 22 leads and that of the base plate 22 facing away from the upper edge 36. As a result, the blades 33 exert on conveying material a conveying pulse directed in the direction of the axis 30 away from the base plate 22 towards the free end of the grinder mill 15, over which a conveying pulse directed radially to the axis 30 towards the friction surface 28 is superimposed.

Die Flügel 33 sind an ihren radial äußeren Enden mit Scherkanten 37 versehen, die parallel zur inneren Reibfläche 28 des Stator-Ringes 26 verlaufen und die schmale Scherspalte 38 gegenüber der inneren Reibfläche 28) begrenzen, deren Weite b also über die Länge der Scherspalte 38 konstant ist. Für die Weite b gilt üblicherweise 0,5 mm ≦ b ≦ 3,0 mm.The wings 33 are provided at their radially outer ends with shear edges 37, which run parallel to the inner friction surface 28 of the stator ring 26 and limit the narrow shear gap 38 with respect to the inner friction surface 28), the width b of which is constant over the length of the shear gap 38 is. The width b is usually 0.5 mm ≦ b ≦ 3.0 mm.

Auf der Antriebswelle 19 ist in dem Bereich, in dem sie die Grundplatte 22 durchsetzt, eine Dicht-Hülse 39 angebracht, gegen die Dichtungen 40, 41 dichtend anliegen, die sich wiederum in einer Durchtritts-Bohrung 42 in der Grundplatte 22 abstützen. Zwischen den Dichtungen 40 und 41 ist eine Fettkammer 43 ausgebildet, in die durch einen Schmierfett-Anschluß 44 Schmierfett zur Schmierung der Dichtungen 40, 41 eingeführt werden kann.On the drive shaft 19, in the area in which it passes through the base plate 22, a sealing sleeve 39 is attached, against which seals 40, 41 bear, which in turn are supported in a through-bore 42 in the base plate 22. Between the seals 40 and 41, a grease chamber 43 is formed, through which a grease connection 44 grease for lubricating the seals 40, 41 can be introduced.

Gegen die Dicht-Hülse 39 liegt eine Distanz-Hülse 45 an, die sich auf ihrer anderen Seite gegen die Nabe 32 des Rotors 25 abstützt, wobei zwischen der Nabe 32 und der Distanz-Hülse 45 Distanz-Scheiben 46 angeordnet sind. Durch Hinzufügen oder Wegnehmen einer Distanz-Scheibe 46 wird die Lege des Rotors 25 in Richtung der Achse 30 verändert, wodurch die Weite b der Scherspalte 38 verändert bzw. eingestellt wird. Gegen die Nabe 32 liegt vom freien Ende des Rotors 25 her eine topfförmige Befestigungs-Hülse 47 an, die mittels einer Hut-Mutter 48 mit einem Gewindezapfen 49 der Antriebswelle 19 verbunden ist und die Nabe 32 mit den Flügeln 33 in Richtung der Achse 30 zur Grundplatte 22 fest gegen die Distanz-Hülse 45 mit den Distanz-Scheiben 46 verspannt.A spacer sleeve 45 bears against the sealing sleeve 39, which is supported on its other side against the hub 32 of the rotor 25, 45 spacer disks 46 being arranged between the hub 32 and the spacer sleeve. By adding or removing a spacer 46, the position of the rotor 25 in the direction of the axis 30 is changed, as a result of which the width b of the shear gap 38 is changed or set. A cup-shaped fastening sleeve 47 bears against the hub 32 from the free end of the rotor 25, which is connected by means of a cap nut 48 to a threaded pin 49 of the drive shaft 19 and the hub 32 with the wings 33 in the direction of the axis 30 Base plate 22 firmly clamped against the spacer sleeve 45 with the spacer washers 46.

Der Reib-Mühle 15 ist eine Flüssigkeits-Zuführeinrichtung 50 zugeordnet, die einen rohrförmigen Grundkörper 51 aufweist, der in eine parallel zur Achse 30 verlaufende Durchgangs-Bohrung 52 in der Grundplatte 22 eingesetzt ist. In diesen rohrförmigen Grundkörper 51 mündet auf dessen dem Stator 24 und Rotor 25 abgewandten Seite der Grundplatte 22 ein Flüssigkeits-Zuführanschluß 53 ein. Auf der dem Rotor 25 zugewandten Seite des Grundkörpers 51 mündet aus diesem ein Sprüh-Ventil 54 aus, bei dem es sich um ein handelsübliches Sprüh-Ventil 54 handelt, das nur dann öffnet, wenn über den Zuführanschluß 53 Flüssigkeit unter Druck zugeführt wird, und das schließt, wenn keine Flüssigkeit unter Druck mehr zugeführt wird. Der Abstand e der Austritts-Öffnung 55 des Ventils 54 von der benachbarten Kante 35 der Flügel 33 ist sehr klein, und zwar so klein, wie es konstruktiv möglich ist. Der Abstand e liegt also im Bereich zwischen 0,5 und 3,0 mm. Der mittlere Abstand f der Austritts-Öffnung 55 von der Achse 30, d.h. der Abstand der Achse 56 des Ventils 54 von der Achse 30 der Antriebswelle 19 beträgt mehr als die Hälfte des maximalen Radius c des Rotors 25, wobei grundsätzlich das Ventil 54 mit seiner Austritts-Öffnung 55 bezogen auf die Achse 30 radial möglichst weit außen, also nahe an der inneren Reibfläche 28 und damit den Scherspalten 38 angeordnet sein soll. Da das Ventil 54 in einer gemeinsamen Ebene mit den Stützstäben 29, den Ansätzen 29a und der Antriebswelle 19 angeordnet ist, ist aus konstruktiven Gründen ein gewisser Abstand zu den Scherspalten 38 unvermeidbar.A liquid feed device 50 is assigned to the grinder 15, which has a tubular base body 51, which is inserted into a through-bore 52 in the base plate 22 running parallel to the axis 30. A liquid supply connection 53 opens into this tubular base body 51 on the side of the base plate 22 facing away from the stator 24 and rotor 25. On the side of the base body 51 facing the rotor 25, a spray valve 54 opens out from the latter, which is a commercially available spray valve 54 which only opens when liquid under pressure is supplied via the supply connection 53, and this closes when no more liquid is supplied under pressure. The distance e of the outlet opening 55 of the valve 54 from the adjacent edge 35 of the wings 33 is very small, namely as small as is structurally possible. The distance e is therefore in the range between 0.5 and 3.0 mm. The average distance f of the outlet opening 55 from the axis 30, ie the distance of the axis 56 of the valve 54 from the axis 30 of the drive shaft 19 is more than half of the maximum radius c of the rotor 25, the valve 54 with its Exit opening 55 is to be arranged radially as far as possible on the outside with respect to the axis 30, ie close to the inner friction surface 28 and thus the shear gaps 38. Since the valve 54 is arranged in a common plane with the support rods 29, the lugs 29a and the drive shaft 19 is a certain distance from the shear gaps 38 is unavoidable for design reasons.

Der Wirkungsmechanismus ist wie folgt:
Durch die Mischwerkzeuge 10 des Mischwerks 6 wird das Mischgut im Behälter 1 umgewälzt und gemischt und auch parallel zur Achse 57 der Welle 5 verschoben. Es wird hierbei in den Raum 58 zwischen der Grundplatte 22 und dem Rotor 25 gebracht und dem Rotor 25 hierbei zugeführt. Das Mischgut wird von den Flügeln 33 erfaßt und einerseits in der geschilderten Weise in Richtung der sich verjüngenden inneren Reibfläche 28 gefördert und gleichzeitig radial zur Achse 30 nach außen geschleudert und den Scherspalten 28 zugeführt. Dadurch daß einerseits die innere Reibfläche 28 radial zur Achse 30 nach außen zumindest weitestgehend geschlossen ist und dadurch, daß die innere Reibfläche 28 sich in der axialen Förderrichtung 59 der Flügel 33 verjüngt, wird das Mischgut im Stator 24 gestaut und nicht lediglich in Richtung 59 durch die Reib-Mühle 15 hindurchgeschleudert. Dadurch daß es gleichzeitig radial nach außen gefördert wird, wird es einer intensiven Reib-Scher-Beanspruchung in den Scherspalten 38 unterzogen. Gleichzeitig wird die Flüssigkeit durch die Austritts-Öffnung 59 in das Mischgut aufgegeben und gelangt unmittelbar danach in die Scherspalte 38. Hierdurch bedingt können sich keine Agglomerate des Mischgutes bilden, und zwar auch nicht bei sehr feinem Mischgut einerseits und hochviskosen, stark klebenden Flüssigkeiten andererseits. Die Flüssigkeit wird auf die einzelnen Mischgut-Partikel feinstverteilt aufgebracht. Es erfolgt also keine Makro-Mischung von Mischgut und Flüssigkeit unter gleichzeitiger Agglomeratbildung, sondern eine Mikro-Mischung.The mechanism of action is as follows:
The mixing material in the container 1 is circulated and mixed by the mixing tools 10 of the mixing unit 6 and also shifted parallel to the axis 57 of the shaft 5. It is brought into the space 58 between the base plate 22 and the rotor 25 and is fed to the rotor 25. The mixed material is gripped by the vanes 33 and, on the one hand, conveyed in the manner described in the direction of the tapering inner friction surface 28 and at the same time flung radially outward to the axis 30 and fed to the shear gaps 28. Because on the one hand the inner friction surface 28 is at least largely closed radially to the axis 30 to the outside and because the inner friction surface 28 tapers in the axial conveying direction 59 of the vanes 33, the material to be mixed is stowed in the stator 24 and not merely in the direction 59 the grinder 15 flung through. Because it is simultaneously conveyed radially outwards, it is subjected to an intensive friction-shear stress in the shear gaps 38. At the same time, the liquid is introduced into the mix through the outlet opening 59 and immediately thereafter enters the shear gap 38. As a result, no agglomerates of the mix can form, not even with very fine mix on the one hand and highly viscous, strongly adhesive liquids on the other. The liquid is applied to the individual mix particles in a very finely divided form. So there is no macro-mixing of mix and liquid with simultaneous agglomerate formation, but a micro-mixing.

Das Ausführungsbeispiel nach den Fig. 5 und 6 unterscheidet sich von dem nach den Fig. 3 und 4 hinsichtlich des Aufbaus von Rotor und Stator nur in konstruktiven Details, auf die es hier nicht ankommt. Identische Teile sind daher mit identischen Bezugsziffern wie in den Fig. 3 und 4 versehen, während funktionell gleiche, aber konstruktiv geringfügig andere Teile mit derselben Bezugsziffer, zusätzlich aber einem hochgesetzten Strich bezeichnet werden, ohne daß es in beiden Fällen einer neuen Beschreibung bedarf. Das Ausführungsbeispiel nach den Fig. 5 und 6 unterscheidet sich von dem nach den Fig. 3 und 4 durch die Art der Flüssigkeitszuführung. Hierbei ist an der Mühlen-Grundplatte 22' ein Zuführgehäuse 60 mittels Schrauben 61 angebracht, in das ein Flüssigkeits-Zuführanschluß 53' radial einmündet. Aus dem die Antriebswelle 19' mit der Dicht-Hülse 39' ortsfest umgebenden Zuführgehäuse 60 wird Flüssigkeit über einen radialen Kanal 62 in der Hülse 39' und der Antriebswelle 19' einem konzentrisch zur Achse 30 verlaufenden Axial-Kanal 63 in der Antriebswelle 19' zugeführt. Dieser Axial-Kanal 63 mündet im Bereich des Rotors 25' in radialen Austrittskanälen 64, die als Bohrungen benachbart zur unteren Kante 35 in den Flügeln 33' angeordnet sind und mit ihren Austrittsöffnungen 55' im jeweiligen Scherspalt 38 oder in der Nähe des Scherspaltes 38 enden.The exemplary embodiment according to FIGS. 5 and 6 differs from that according to FIGS. 3 and 4 with regard to the construction of the rotor and stator only in constructive details, which are not important here. Identical parts are therefore provided with identical reference numerals as in FIGS. 3 and 4, while functionally identical but structurally slightly different parts are designated with the same reference number, but additionally with a prime, without requiring a new description in both cases. The embodiment of FIGS. 5 and 6 differs from that of FIGS. 3 and 4 by the type of Hydration. Here, a feed housing 60 is attached to the mill base plate 22 'by means of screws 61, into which a liquid feed connection 53' opens radially. From the supply housing 60, which surrounds the drive shaft 19 'with the sealing sleeve 39' in a stationary manner, liquid is supplied via a radial channel 62 in the sleeve 39 'and the drive shaft 19' to an axial channel 63 which runs concentrically to the axis 30 in the drive shaft 19 ' . This axial channel 63 ends in the region of the rotor 25 'in radial outlet channels 64, which are arranged as bores adjacent to the lower edge 35 in the wings 33' and end with their outlet openings 55 'in the respective shear gap 38 or in the vicinity of the shear gap 38 .

Alternativ können die radialen Austrittskanäle 64' als von den Flügeln 33' gesonderte Röhrchen ausgebildet sein, die ebenfalls bis in die Nähe der inneren Reibfläche 28 ragen und dort die Flüssigkeit in Richtung zur inneren Reibfläche 28 abgeben. In allen geschilderten Fällen wird die Flüssigkeit also so zugegeben, daß sie zusammen mit dem Mischgut über den größten Teil der inneren Reibfläche 28 von ihrer Eintrittsseite 24a als ihrem weiteren Bereich zu ihrer Austrittsseite 24b als ihrem engeren Bereich durchwandern muß.Alternatively, the radial outlet channels 64 ′ can be designed as tubes separate from the vanes 33 ′, which also protrude into the vicinity of the inner friction surface 28 and release the liquid there in the direction of the inner friction surface 28. In all of the cases described, the liquid is thus added in such a way that it has to pass through together with the mixture over most of the inner friction surface 28 from its inlet side 24a as its wider area to its outlet side 24b as its narrower area.

Claims (12)

Reib-Mühle - mit einer Mühlen-Grundplatte (22, 22') - mit einem mit der Grundplatte (22, 22') verbundenen Motor (17) - mit einer mit dem Motor (17) gekuppelten um eine Achse (30) drehantreibbaren Antriebswelle (19, 19') - mit einem mit der Grundplatte (22, 22') verbundenen, eine konzentrisch zur Achse (30) angeordnete Innenfläche (Reibfläche 28) aufweisenden und innerhalb der Innenfläche (Reibfläche 28) zumindest im wesentlichen offenen, ringförmigen Stator (24) mit einer Mischgut-Eintrittsseite (24a) und einer in Richtung der Achse (30) beabstandeten Mischgut-Austrittsseite (24b) und - mit einem drehfest mit der Antriebswelle (19, 19') verbundenen, mit sich bis in die Nähe der Innenfläche (Reibfläche 28) erstreckenden Flügeln (33, 33') versehenen, zwischen den Flügeln (33, 33') zumindest im wesentlichen offen ausgebildeten, an den radial außenliegenden Enden der Flügel (33, 33') im wesentlichen parallel zur Innenfläche (Reibfläche 28) verlaufende Kanten (Scherkanten 37) aufweisenden Rotor (25, 25'), dadurch gekennzeichnet, daß die Innenfläche des Stators (24) als sich in Richtung von der Mischgut-Eintrittsseite (24a) zur Mischgut-Austrittsseite (24b) kegelstumpfförmig verjüngende Reibfläche (28) ausgebildet ist.Grinder mill - With a mill base plate (22, 22 ') - With a motor (17) connected to the base plate (22, 22 ') - With a drive shaft (19, 19 ') which is coupled to the motor (17) and can be driven in rotation about an axis (30) with an annular stator (24) connected to the base plate (22, 22 ') and having an inner surface (friction surface 28) arranged concentrically to the axis (30) and at least substantially open within the inner surface (friction surface 28) with a mixed material Inlet side (24a) and a mixed material outlet side (24b) and in the direction of the axis (30) - With a non-rotatably connected to the drive shaft (19, 19 '), with up to near the inner surface (friction surface 28) extending wings (33, 33') provided between the wings (33, 33 ') at least substantially open formed (at the radially outer ends of the wings (33, 33 ') essentially parallel to the inner surface (friction surface 28) edges (shear edges 37)) having rotor (25, 25'), characterized in that the inner surface of the stator (24) is designed as a frustoconical tapered friction surface (28) in the direction from the mixture inlet side (24a) to the mixture outlet side (24b). Reib-Mühle nach Anspruch 1, dadurch gekennzeichnet, daß die Reibfläche (28) zumindest im wesentlichen geschlossen ausgebildet ist.Friction mill according to claim 1, characterized in that the friction surface (28) is at least substantially closed. Reib-Mühle nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Reibfläche (28) unter einem halben Kegelöffnungswinkel (a) zur Achse (30) geneigt ist, für den gilt: 20° ≦ a ≦ 45°.Friction mill according to claim 1 or 2, characterized in that the friction surface (28) is inclined at half a cone opening angle (a) to the axis (30), for which the following applies: 20 ° ≦ a ≦ 45 °. Reib-Mühle nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Rotor (25, 25') einen maximalen Radius (c) und im Bereich seiner radialen äußeren Kanten (Scherkanten 37) eine Erstreckung (d) in Richtung der Achse (30) aufweist, für deren Verhältnis d/c gilt: 0,4 ≦ d/c ≦ 0,6.Friction mill according to one of claims 1 to 3, characterized in that the rotor (25, 25 ') has a maximum radius (c) and in the region of its radial outer edges (shear edges 37) an extension (d) in the direction of the axis ( 30), whose ratio d / c applies: 0.4 ≦ d / c ≦ 0.6. Reib-Mühle nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die radial äußeren Kanten (Scherkanten 37) der Flügel (33, 33') jeweils einen Scherspalt (38) zur Reibfläche (28) begrenzen.Friction mill according to one of claims 1 to 4, characterized in that the radially outer edges (shear edges 37) of the blades (33, 33 ') each delimit a shear gap (38) to the friction surface (28). Reib-Mühle nach Anspruch 5, dadurch gekennzeichnet, daß die Weite (b) der Scherspalte (38) einstellbar ist.Friction mill according to claim 5, characterized in that the width (b) of the shear gap (38) is adjustable. Reib-Mühle nach Anspruch 6, dadurch gekennzeichnet, daß der Rotor (25, 25') in Richtung der Achse (30) relativ zum Stator (24) einstellbar ist.Friction mill according to claim 6, characterized in that the rotor (25, 25 ') can be adjusted relative to the stator (24) in the direction of the axis (30). Reib-Mühle nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß eine Flüssigkeits-Zuführeinrichtung (50, 50') vorgesehen ist, deren mindestens eine Flüssigkeits-Austrittsöffnung (55, 55') unmittelbar benachbart zur Mischgut-Eintrittsseite (24a) des Stators (24) angeordnet ist.Friction mill according to one of claims 1 to 7, characterized in that a liquid feed device (50, 50 ') is provided, the at least one liquid outlet opening (55, 55') of which is directly adjacent to the material inlet side (24a) of the Stator (24) is arranged. Reib-Mühle nach Anspruch 8, dadurch gekennzeichnet, daß die Flüssigkeits-Zuführeinrichtung (50) mindestens ein unmittelbar vor der Mischgut-Eintrittsseite (24b) des Stators (24) angeordnetes Sprüh-Ventil (54) ausweist.Friction mill according to claim 8, characterized in that the liquid supply device (50) identifies at least one spray valve (54) arranged directly in front of the mixed material inlet side (24b) of the stator (24). Reib-Mühle nach Anspruch 8, dadurch gekennzeichnet, daß die Flüssigkeits-Zuführeinrichtung (50') einen durch die Antriebswelle (19') geführten Kanal (63) und mindestens einen hiermit verbundenen, sich bis in die Nähe der Reibfläche (28) erstreckenden Austrittskanal (64, 64') aufweist.Friction mill according to claim 8, characterized in that the liquid supply device (50 ') has a channel (63) guided through the drive shaft (19') and at least one outlet channel connected to it and extending into the vicinity of the friction surface (28) (64, 64 '). Verwendung einer Reib-Mühle nach einem der Ansprüche 1 bis 10 in einem einen zylindrischen Behälter (1) und ein in diesem drehantreibbar angeordneten Mischwerk (6) aufweisenden Mischer, wobei die Mühlen-Grundplatte (22, 22') in einer Wand (12) des Behälters (1), der Motor (17) außerhalb des Behälters (1) und Rotor (25, 25') und Stator (24) innerhalb des Behälters (1) angeordnet sind.Use of a grinder according to one of claims 1 to 10 in a mixer having a cylindrical container (1) and a mixer (6) arranged so that it can be driven in rotation, the mill base plate (22, 22 ') being in a wall (12) of the container (1), the motor (17) outside the container (1) and rotor (25, 25 ') and stator (24) are arranged inside the container (1). Verwendung einer Reib-Mühle nach Anspruch 1, wobei das Mischwerk (6) eine Welle (5) und mit dieser verbundene, in der Nähe der Wand (12) des Behälters (1) umlaufend antreibbare Mischwerkzeuge (10) aufweist und wobei die Mischwerkzeuge (10) zwischen der Wand (12) des Behälters (1) einerseits und Rotor (25, 25') und Stator (24) andererseits hindurchbewegbar sind.Use of a grinder according to claim 1, wherein the mixer (6) has a shaft (5) and connected to it, in the vicinity of the wall (12) of the container (1) which can be driven in rotation, and the mixing tools (10) being movable between the wall (12) of the container (1) on the one hand and the rotor (25, 25 ') and stator (24) on the other.
EP94114511A 1993-09-28 1994-09-15 Grinding mill and mixer containing said grinding mill Expired - Lifetime EP0645179B1 (en)

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DE4332977 1993-09-28
DE4332977A DE4332977A1 (en) 1993-09-28 1993-09-28 Grinding mill and its use

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EP0645179B1 EP0645179B1 (en) 1997-06-11

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EP0740953A1 (en) * 1995-05-02 1996-11-06 LIPP Mischtechnik GmbH Device for grinding and mixing masses
DE19602581A1 (en) * 1996-01-25 1997-07-31 Draiswerke Gmbh Process and mixer for making a paper coating medium
EP0836880A1 (en) * 1996-10-16 1998-04-22 Clariant GmbH Mixer for the continuous processing of flowable materials
US6626975B1 (en) 1999-01-15 2003-09-30 H. C. Starck Gmbh & Co. Kg Method for producing hard metal mixtures
DE10012072B4 (en) * 2000-03-14 2015-08-27 Hermann Linden Gmbh & Co. Kg Inline mixer

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DE59403099D1 (en) 1997-07-17
DE4332977A1 (en) 1995-03-30

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