EP0201927A2 - Dispositif pour mélanger et disperser au moins deux milieux - Google Patents

Dispositif pour mélanger et disperser au moins deux milieux Download PDF

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Publication number
EP0201927A2
EP0201927A2 EP86106666A EP86106666A EP0201927A2 EP 0201927 A2 EP0201927 A2 EP 0201927A2 EP 86106666 A EP86106666 A EP 86106666A EP 86106666 A EP86106666 A EP 86106666A EP 0201927 A2 EP0201927 A2 EP 0201927A2
Authority
EP
European Patent Office
Prior art keywords
rotor
outlet
stator
media
openings
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
EP86106666A
Other languages
German (de)
English (en)
Other versions
EP0201927B1 (fr
EP0201927A3 (en
Inventor
Hanspeter Seeger
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.)
Ystral GmbH Maschinenbau und Processtechnik
Original Assignee
Ystral GmbH Maschinenbau und Processtechnik
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 Ystral GmbH Maschinenbau und Processtechnik filed Critical Ystral GmbH Maschinenbau und Processtechnik
Priority to AT86106666T priority Critical patent/ATE82873T1/de
Publication of EP0201927A2 publication Critical patent/EP0201927A2/fr
Publication of EP0201927A3 publication Critical patent/EP0201927A3/de
Application granted granted Critical
Publication of EP0201927B1 publication Critical patent/EP0201927B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/81—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis the stirrers having central axial inflow and substantially radial outflow
    • B01F27/812—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis the stirrers having central axial inflow and substantially radial outflow the stirrers co-operating with surrounding stators, or with intermeshing stators, e.g. comprising slits, orifices or screens
    • 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 device according to the preamble of claim 1.
  • a device of this type is described and shown in US-PS 44 37 765.
  • the known device is a so-called jet mixer, in which the media are mixed with one another by rotating the rotor and due to the circulation, which is also based on the rotation of the rotor. Mixing is essentially achieved in the known embodiment. Dispersion is possible due to the presence of individual dispersing elements, but the dispersion of the material or the circulation speed is impaired by the dispersion because the dispersion takes place in the main stream. The dispersion effect is therefore imperfect.
  • the invention has for its object to design a device of the type described above so that a partial stream of the at least premixed media can be fed to a safe dispersion.
  • the main advantage of the embodiment according to the invention is that it enables simultaneous mixing and dispersion without mutual hindrance. These two processes are not integrated into one another within one stream, but they each take place in a partial stream, the dispersion stream being directed radially on account of the centrifugal force of the mixture parts set in rotation by the rotor.
  • the radial acceleration of the at least premixed components is used for the more intensive operation of the device, namely dispersing, in which the media present in the partial flow are disrupted and finely distributed by supporting the radial acceleration.
  • the proportion of dispersing and mixing work can also be determined by dimensioning the size of the outlet opening. This depends on the degree of dispersion and the type of media to be treated.
  • the size can both be immutable for certain media can also be determined continuously or in stages (claim 5) for different media and / or different mixing or dispersing results.
  • the size of the outlet opening for the mixed partial flow can take on relatively small amounts, the outlet opening can even be completely closed under certain circumstances, so that only the dispersed partial flow exits the stator exclusively through the openings for this partial flow.
  • the configuration according to the invention is of particular importance for all processes which begin with the use of powder and require a lump-free and agglomerate-free disruption of the materials to be treated in the further treatment.
  • Conventional dispersion systems have the disadvantage that, although they emulsify satisfactorily, they do not provide the circulating power for drawing in powder or other light materials. This means that especially in the critical phase, namely towards the end of the Benet process, with already increased viscosity floating powder lumps on the surface that can no longer be pulled down and dispersed.
  • the entire process for powder wetting and subsequent homogenization of the powder or emulsification proceeds without problems and without difficult procedural measures. Compared to conventional systems, this means a considerable saving of time or an increase in quality and an increase in production reliability. This applies especially to emulsions, the stability of which can often not be predetermined.
  • An advantageous further development of the invention consists in that the openings for the dispersed partial stream are formed by axially extending slots.
  • This configuration enables a large number of slots lying in the direction of rotation of the rotor, as a result of which the dispersion capacity and the dispersion effect are increased.
  • the latter is also verbes by the known design according to claim 4 through the shear edges on the opening edges and on the rotor blades, which enable a fine disintegration of the materials to be dispersed.
  • the embodiment according to claim 6 is recommended, in which annular outlet cross sections can be realized.
  • the formation of the adjustable closure member as a baffle plate according to claim 7 is recommended for structural reasons.
  • the media are circulated by the influence of the rotating rotor, this influence being based on a set of the rotor blades (claim 9), on the centrifugal force or on both.
  • An alternative measure for changing the size of the outlet opening is according to Claim 12 in changing the distance between the device and the bottom of the container in which the device is in operation with the media to be treated. As this distance decreases, the size of the outlet for the mixed partial flow also decreases. When the device rests on the underside on the bottom of the container, the outlet is completely closed, so that full flow dispersion takes place. With increasing distance from the bottom of the container, the proportion of dispersion can be reduced again. For the dependence of these measures, reference is made to the description of claim 5.
  • a device for the measure described above can be of simple construction within the scope of the invention. It includes a container or other abutment, for. B. the container supporting base supportable frame which has a holding device for the device according to the invention, the holding device being axially adjustable to the device according to the invention and being fixable in the respective position on or in the frame.
  • the device generally designated 1 in the figures, consists of a rotor, generally designated 2, which is mounted in a tubular stator 4 so as to be rotatable about an axis of rotation 3.
  • the rotor 2 has a plurality of radially extending rotor blades 5 and is fastened to a vertically extending drive shaft 6, which is arranged within a protective tube 7 which carries the stator 4 and is connected to the latter by means of radially extending struts 8.
  • the stator 4 consists of a vertically arranged tube 9 which is expanded in the shape of a trumpet on the upper side and with these edges 11 delimits an inlet, generally designated 12, for the materials to be treated.
  • the struts 8 pass through this inlet 12 and connect the tube 9 to a sleeve 13 which is fastened on the protective tube 7.
  • the tube 9 of the stator 4 is drawn in in the form of a radially extending annular wall 14 which encloses an outlet 15.
  • the hollow cylindrical Wall section of the tube 9 and the annular wall 14 form a corner or inner shoulder of the stator 4, in which the rotor 2 is arranged.
  • baffle plate 19 is axially adjustable in a manner not shown and can be locked in the respective position.
  • the adjustability of the baffle plate 19 is shown by a double arrow 21.
  • the diameter d of the rotor 2 is dimensioned so large that there is only a small gap s between the inner wall 22 of the tube 9 and the lateral surfaces 23 of the rotor 2. This gap s also extends between the side 24 of the rotor facing the outlet 15 and the inside 25 of the ring wall 14. Between the inside wall 22 and the inside 25 of the stator 4 and the lateral surface 23 and the side 24 of the rotor 2, a generally arises Scherfeld designated 26, the stator side shear edges 27 are formed by the inner edges 28 and its rotor-side shear edges 29 by the outer edges 31 and the side edges 32 of the rotor 2.
  • the rotor blades 5 are set. This can be seen on the inclined side surfaces, which are designated by 33 in FIG. 2. Due to the setting of the rotor blades 5 of the rotor 2 rotating during operation in the direction of the arrow 34, the material to be treated, which consists of at least two different substances or media, is sucked into the stator 4 in the direction of the arrows 35 through the inlet 12. In the area of the rotor 2, the material is intimately mixed with one another, and it divides into an axial, generally 36 and a radial, generally 37 partial flow due to two feed forces. The partial flows are identified by radial and axial arrows.
  • the axial partial flow 36 is a ring flow, and it is based on axial feed or acceleration forces which are caused by the setting of the rotor blades 5.
  • the radial partial flow 37 spreads from the entire circumference of the stator 4 and is based on feed or acceleration forces which are caused by the centrifugal force of the material parts rotating with the rotor 2.
  • Those located in the axial partial flow 36 Materials are mainly mixed intensively with one another, while the materials located in the radial partial flow 37 are subject to strong shear and impact effects in the shear field 26, as a result of which the desired dispersion and emulsification is effected.
  • the proportion of the dispersion work in the radial partial flow 37 can be controlled by appropriate dimensioning of the distance a between the baffle plate 19 and the ring wall 14.
  • the distance a determining the cross section of the outlet 15 should be selected to be relatively large. This is e.g. B. the case when light substances are to be incorporated, for. B. powders, which require a relatively large suction to pull them down from the surface of the material to be treated in the area of the stator.
  • the baffle plate 19 differs from the one described above only in that the baffle plate 19 is not present.
  • the device 1 for controlling the desired amount of dispersion or mixing work relative to the bottom 43 of the container 42 is axially adjusted.
  • the proportion of the dispersion work is also determined by the size or length 1 of the slots 16. In the present exemplary embodiments, the length 1 corresponds to the width f of the rotor 2.
  • the axial adjustment of the device 1 is expediently carried out by means of a holding device 45 which supports it and which can be displaced vertically (double arrow 46) in a guide 47 by means of an actuator (not shown).
  • the actuator can e.g. B. be a pneumatically or hydraulically expandable actuating cylinder.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Coating Apparatus (AREA)
EP86106666A 1985-05-15 1986-05-15 Dispositif pour mélanger et disperser au moins deux milieux Expired - Lifetime EP0201927B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86106666T ATE82873T1 (de) 1985-05-15 1986-05-15 Vorrichtung zum mischen und dispergieren mindestens zweier medien.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3517655 1985-05-15
DE19853517655 DE3517655A1 (de) 1985-05-15 1985-05-15 Vorrichtung zum mischen und dispergieren mindestens zweier medien

Publications (3)

Publication Number Publication Date
EP0201927A2 true EP0201927A2 (fr) 1986-11-20
EP0201927A3 EP0201927A3 (en) 1988-05-18
EP0201927B1 EP0201927B1 (fr) 1992-12-02

Family

ID=6270889

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86106666A Expired - Lifetime EP0201927B1 (fr) 1985-05-15 1986-05-15 Dispositif pour mélanger et disperser au moins deux milieux

Country Status (4)

Country Link
US (1) US4738543A (fr)
EP (1) EP0201927B1 (fr)
AT (1) ATE82873T1 (fr)
DE (2) DE3517655A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2162733C1 (ru) * 1999-06-15 2001-02-10 Тамбовский государственный технический университет Реактор-полимеризатор
WO2013064663A1 (fr) * 2011-11-02 2013-05-10 Fresenius Kabi Deutschland Gmbh Dispositif et procédé pour préparer une composition fluide pour nutrition entérique complète ou de supplémentation
EP2939734A4 (fr) * 2012-12-25 2016-08-24 M Tech Co Ltd Dispositif et procédé de mélange

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990014880A1 (fr) * 1989-05-03 1990-12-13 Ullrich, Manfred Dispositif melangeur pour fluides
DE4118870A1 (de) * 1991-06-07 1992-12-17 Ystral Gmbh Maschinenbau Und P Vorrichtung zum benetzen und dispergieren von pulvern in fluessigkeiten
US6863431B2 (en) * 1992-03-30 2005-03-08 Omni International, Inc. Disruptor device which eliminates cross contamination
SG11201800144QA (en) 2015-08-06 2018-02-27 Meiji Co Ltd Atomization device and method for manufacturing product with fluidity using said device
DE102016103968B4 (de) 2016-03-04 2019-01-17 Alexander Westphal Rührer, insbesondere Leitstrahlmischer und Rühreinrichtung umfassend einen Rührer
US11241661B2 (en) * 2019-04-15 2022-02-08 M. Technique Co., Ltd. Stirrer

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875897A (en) * 1953-06-22 1959-03-03 Booth Lionel Earl Flotation machine
US2985389A (en) * 1955-09-02 1961-05-23 Willems Peter Apparatus for physical and/or chemical treatment of materials
DE1219447B (de) * 1963-11-22 1966-06-23 Karg G M B H Dr Mischkopf zum Homogenisieren u. dgl. von Medien fluessiger bis hochviskoser Konsistenz
US3724765A (en) * 1971-09-03 1973-04-03 Beckman Instruments Inc Tablet disruptor device
DE2310321B1 (de) * 1973-03-01 1974-01-31 Int Laboratoriums App Gmbh Emulgier- und dispergiervorrichtung mit rotierenden konzentrischen werkzeugkraenzen
GB1518144A (en) * 1975-07-04 1978-07-19 Pilkington Brothers Ltd Glass fibre reinforced cement composite materials
DE2702183A1 (de) * 1977-01-20 1978-07-27 Ystral Gmbh Maschinenbau Und P Misch- und dispergiervorrichtung
US4437765A (en) * 1982-03-05 1984-03-20 Ystral Gmbh Dispersion turbine
DE3220092A1 (de) * 1982-05-28 1983-12-01 Janke & Kunkel GmbH & Co KG Ika - Werk, 7813 Staufen Dispergiervorrichtung
GB2165462B (en) * 1984-10-10 1988-02-03 Unishear Mixers Ltd Mixing apparatus stator device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2162733C1 (ru) * 1999-06-15 2001-02-10 Тамбовский государственный технический университет Реактор-полимеризатор
WO2013064663A1 (fr) * 2011-11-02 2013-05-10 Fresenius Kabi Deutschland Gmbh Dispositif et procédé pour préparer une composition fluide pour nutrition entérique complète ou de supplémentation
EP2939734A4 (fr) * 2012-12-25 2016-08-24 M Tech Co Ltd Dispositif et procédé de mélange
JPWO2014102906A1 (ja) * 2012-12-25 2017-01-12 エム・テクニック株式会社 攪拌処理装置及び処理方法
US9925503B2 (en) 2012-12-25 2018-03-27 M. Technique Co., Ltd. Stirring-processing apparatus and processing method

Also Published As

Publication number Publication date
DE3687183D1 (de) 1993-01-14
US4738543A (en) 1988-04-19
EP0201927B1 (fr) 1992-12-02
ATE82873T1 (de) 1992-12-15
DE3517655A1 (de) 1986-11-20
EP0201927A3 (en) 1988-05-18
DE3517655C2 (fr) 1987-07-16

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