EP0290033B1 - Homogenisator für die Herstellung fliessfähiger Produkte - Google Patents

Homogenisator für die Herstellung fliessfähiger Produkte Download PDF

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Publication number
EP0290033B1
EP0290033B1 EP88107285A EP88107285A EP0290033B1 EP 0290033 B1 EP0290033 B1 EP 0290033B1 EP 88107285 A EP88107285 A EP 88107285A EP 88107285 A EP88107285 A EP 88107285A EP 0290033 B1 EP0290033 B1 EP 0290033B1
Authority
EP
European Patent Office
Prior art keywords
rotation
rotor
stator
blades
rotor blades
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88107285A
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German (de)
English (en)
French (fr)
Other versions
EP0290033A1 (de
Inventor
Alwin Berents
Erwin Seefried
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.)
A Berents & Co KG GmbH
Original Assignee
A Berents & Co KG GmbH
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Application filed by A Berents & Co KG GmbH filed Critical A Berents & Co KG GmbH
Priority to AT88107285T priority Critical patent/ATE80807T1/de
Publication of EP0290033A1 publication Critical patent/EP0290033A1/de
Application granted granted Critical
Publication of EP0290033B1 publication Critical patent/EP0290033B1/de
Anticipated expiration legal-status Critical
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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
    • B01F27/80—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
    • B01F27/811—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 with the inflow from one side only, e.g. stirrers placed on the bottom of the receptacle, or used as a bottom discharge pump
    • B01F27/8111—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 with the inflow from one side only, e.g. stirrers placed on the bottom of the receptacle, or used as a bottom discharge pump the stirrers co-operating with stationary guiding elements, e.g. surrounding stators or intermeshing stators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/75—Discharge mechanisms
    • B01F35/752—Discharge mechanisms with arrangements for converting the mechanism from mixing to discharging, e.g. by either guiding a mixture back into a receptacle or discharging it

Definitions

  • the invention relates to a homogenizer for the production of a flowable product such as emulsion or the like with a rotor driven by a motor and having rotor blades, and with a stator having flow openings, which surrounds the rotor and through which the material flows from the inside to the outside.
  • Homogenizers of this type work to generate an intensive homogenization with strong turbulence and thus unfavorable flow conditions, so that relatively high drive energies are required for processing highly viscous products. Because of these turbulences, such homogenizers produce only a very slight pumping action, so that additional pumps must be used to circulate the flowable product or additional blades or the like are attached to the rotor of the homogenizer in order to improve the pumping action (DE-OS 34 17 242). However, such solutions or special constructions mean a relatively high outlay, a complication of the homogenizer and a possibly increased susceptibility to failure.
  • the present invention is based on the object of proposing a homogenizer with which it is possible to easily switch to a higher pumping action without this requiring more effort.
  • a homogenizer of the type mentioned which is characterized in that the motor for driving the rotor is designed both in one and in the other direction of rotation and that the conveying surfaces of the rotor blades are shaped in such a way relative to the flow openings of the stator are that in one direction of rotation the flow of the flowable product strikes the walls of the flow openings approximately at right angles and an optimal homogenization effect is achieved, but in the other direction of rotation is directed in the direction of the flow openings and achieves an optimal pumping effect.
  • EP-A 201 767 discloses a cyclone mixing device for the continuous mixing of powdery substances with liquids, which also has the features of the preamble of claim 1.
  • a mixing effect is achieved in that the substances flowing through impinge on the radial walls of the surrounding stator at an angle of approximately 45 °, which produces a certain homogenizing effect. If the pump wheel were to run in the opposite direction of rotation (clockwise) - which is not provided for in the mixing device described - this would have a different effect than the one desired because the blades of the pump wheel do not effectively move the substances flowing through in the desired direction in the direction would promote stator channels.
  • This solution has the significant advantage that it is possible to switch the homogenizer to pump operation in a very simple manner, namely when driven by an electric motor in an electrical manner, without having to operate valves or the like. Since homogenizers are already designed for these high outputs due to the high drive power required for homogenization, very high pump outputs can be achieved after switching the direction of rotation.
  • An advantageous embodiment is characterized in that the rotor blades are provided with first conveying surfaces which are effective in one direction of rotation and are designed for homogenization and with second conveying surfaces which are effective in the other direction of rotation and are designed for optimal pumping.
  • the homogenizer is preferably designed in such a way that the first conveying surfaces of the rotor blades run approximately radially and that the second conveying surfaces have a spiral course with a continuously decreasing distance from the stator when rotating in the other direction of rotation.
  • the first and second conveying surfaces of the rotor blades are preferably shaped such that their directional components are approximately perpendicular to one another in the two directions of rotation. Such an extreme shape has the effect that during the homogenization operation there is practically only turbulence and homogenization without any appreciable pumping action, while the optimal flow conditions are present during the pumping operation, so that high pumping capacities can be achieved with relatively low energy.
  • the stator expediently has a plurality of guide blades distributed around the circumference, the flow openings of which run approximately parallel to the directional components during pump operation in the other direction of rotation.
  • the flow resistances are minimized by this design, while in the homogenizing operation the directional components strike the walls at the flow openings approximately at right angles, which leads to strong turbulence and effective homogenization.
  • Another embodiment is characterized in that the rotor has a plurality of radially inclined rotor blades and the stator has a plurality of radially inclined guide vanes, that the inclination of the rotor blades is opposite to the inclination of the stator blades, preferably two sets of each Rotor blades and two sets of vanes are provided.
  • Such a homogenizer which can be switched over to pumping operation can expediently be used for pumping off the flowable product after homogenization has been completed by reversing the direction of rotation of the rotor and switching over to a drain.
  • Such an insert is particularly simple to set up in terms of system and has the advantage over the use of an additional pump that the device that is not required in each case does not have to be shut down and possibly cleaned before being put back into operation.
  • the homogenizer according to the invention can, however, also be used particularly simply for circulating the flowable product or for adding an additional component to the product while reversing the direction of rotation of the rotor.
  • an additional component is added, a homogenization operation is usually not necessary, so that the high pumping power of the switched homogenizer leads to a high circulation and thus mixing speed.
  • a stator 2 and a rotor 1 are accommodated in a housing 3, the rotor being driven by a drive shaft 4.
  • the homogenizer has an inlet 5 and an outlet 6.
  • the stator 2 has a plurality of guide vanes 21 distributed around the circumference, which form flow openings 22 between them.
  • the rotor 1 seated on the drive shaft 4 has four in the present exemplary embodiment Rotor blades 11, which have differently shaped first conveying surfaces 12 and second conveying surfaces 13 depending on the direction of rotation. While the first conveying surfaces 12 run approximately radially, the second conveying surfaces 13 have a spiral shape and, when the rotor 1 rotates counterclockwise (seen in FIG. 2), the distance from the stator 2 decreases continuously.
  • the directional components 14 and 15 are approximately perpendicular to one another in the homogenizing mode or in the pumping mode, which means that in the homogenizing mode the flow of the flowable product is practically perpendicular to the walls 23 of the guide vanes 21 hit, so that practically no pumping action is generated.
  • the homogenizer is to be given a slight pumping action, then the first conveying surface 12 or the walls 23 of the stator 2 are designed to be slightly different from a perpendicular relationship to one another in order to achieve a larger outwardly directed component. It is also possible to provide a deviation from the optimal pumping action in the operating mode according to FIG. 4 if a slight swirl is desirable.
  • the inventive homogenizer consisting of the rotor 1, the stator 2, the drive shaft 4 and a drive motor 7, can be used to easily switch from the homogenization mode to pumping or circulation. Only a three-way valve 8 is required to control these processes, but no additional pumps or shut-off valves. If the outlet 6 of the homogenizer is connected to a return 9 to a mixing container via the three-way valve 8, the homogenization operation takes place in one direction of rotation, the flowable product leaving the outlet 6 being reintroduced into the mixing container 10 via the return 9.
  • the homogenization is now complete and if the flowable product is only to be circulated or mixed, possibly with the addition of a further component, the direction of rotation of the motor 7 is reversed, and the homogenizer pumps the flowable product with great power from its outlet 6 to the return line 9 and thus into the mixing container 10. This circulation or mixing process takes place with great intensity due to the very high throughput.
  • the three-way valve 8 is switched over and the homogenizer is operated in the reverse direction of rotation of the motor 7 (pump operation). In this case, the flowable product flows from the outlet 6 via the three-way valve 8 to the outlet 20.
  • the second embodiment of the homogenizer according to the invention shown in FIGS. 6 and 7 has a differently designed rotor 1 and a differently designed stator 2.
  • the homogenizer is designed in particular in two stages in order to further improve the homogenization effect; however, it is also possible to construct a single-stage homogenizer in the manner of the second embodiment according to the principle according to the invention.
  • the rotor 1, which is driven via a drive shaft 4, contains inner rotor blades 11a and outer rotor blades 11b.
  • the stator 2 has inner guide blades 21a and outer guide blades 21b, rotor blades and guide blades being arranged alternately one behind the other.
  • the directional arrows 17 of the rotor 1 indicated in FIG. 7 relate to the pumping direction of the homogenizer, and the flowable product is drawn in in the direction of the arrows 18 and pumped out in the direction 6 of the arrows 6 into the outlet 6.
  • the flow openings 22a between the rotor blades 11a and 11b are inclined with respect to the radial direction opposite to the direction of rotation 17 (pumping direction), while the flow openings 22b between the guide blades 21a and 21b are inclined with respect to the radial direction in the direction of rotation 17. This means that the inclination of the rotor blades 11a and 11b is opposite to the inclination of the stator blades 21a and 21b.
  • Both embodiments have in common that the homogenizer is designed in such a way that in one direction of rotation there are optimal conditions for effective homogenization, while in the opposite direction of rotation optimal flow conditions are set for an optimal pumping action.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP88107285A 1987-05-08 1988-05-06 Homogenisator für die Herstellung fliessfähiger Produkte Expired - Lifetime EP0290033B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88107285T ATE80807T1 (de) 1987-05-08 1988-05-06 Homogenisator fuer die herstellung fliessfaehiger produkte.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873715331 DE3715331A1 (de) 1987-05-08 1987-05-08 Homogenisator fuer die herstellung fliessfaehiger produkte
DE3715331 1987-05-08

Publications (2)

Publication Number Publication Date
EP0290033A1 EP0290033A1 (de) 1988-11-09
EP0290033B1 true EP0290033B1 (de) 1992-09-23

Family

ID=6327089

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88107285A Expired - Lifetime EP0290033B1 (de) 1987-05-08 1988-05-06 Homogenisator für die Herstellung fliessfähiger Produkte

Country Status (3)

Country Link
EP (1) EP0290033B1 (enrdf_load_stackoverflow)
AT (1) ATE80807T1 (enrdf_load_stackoverflow)
DE (2) DE3715331A1 (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19923378C2 (de) * 1999-05-21 2003-04-30 Vakumix Ruehr Und Homogenisier Vorrichtung zum Homogenisieren fließfähiger Stoffe
DE19916053B4 (de) * 1999-04-09 2005-05-19 Vakumix Rühr- und Homogenisiertechnik AG Vorrichtung zum Homogenisieren fließfähiger Stoffe
JP2013132573A (ja) * 2011-12-26 2013-07-08 Jtekt Corp 混合分散装置

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2679789A1 (fr) * 1991-07-31 1993-02-05 Ouest Enrobes Modernes Melangeur-disperseur a pulsations pour la preparation de produits thermoplastiques, en particulier de produits bitumineux.
DE19537303B4 (de) * 1995-08-29 2005-04-21 Vakumix Rühr- und Homogenisiertechnik AG Vorrichtung zum Homogenisieren fließfähiger Stoffe
DE29606962U1 (de) * 1996-04-17 1997-08-21 Haagen & Rinau Mischtechnik GmbH, 28357 Bremen Vorrichtung zum Homogenisieren und/oder Dispergieren eines fließfähigen Guts
EP0988887B1 (de) * 1998-08-25 2003-02-05 Vakumix Rühr- und Homogenisiertechnik Aktiengesellschaft Homogenisator mit Schutzvorrichtung auf dem Rotor
DE19919859C2 (de) * 1999-04-30 2002-08-22 Guenter Slowik Verfahren und Vorrichtung zur Behandlung von in einem Behälter, insbesondere durch Misch- oder Rührvorgänge, in Rotation um die Behälterachse befindlichem Stoff oder Stoffgemisch
RU2152819C1 (ru) * 1999-10-28 2000-07-20 Открытое акционерное общество "ЭНА" Роторно-пульсационный аппарат
DE20002920U1 (de) 2000-02-18 2000-04-20 Schröder & Boos Misch- und Anlagentechnik GmbH & Co. KG, 27578 Bremerhaven Homogenisator
DE50007630D1 (de) * 2000-10-11 2004-10-07 Vakumix Ruehr Und Homogenisier Vorrichtung zum Homogenisieren fliessfähiger Stoffe
DE10320739B3 (de) 2003-05-09 2004-10-21 Ika - Werke Gmbh & Co. Kg Vorrichtung zum Dispergieren und/oder Homogenisieren
DE202005018432U1 (de) * 2005-11-23 2006-08-24 Frymakoruma Ag Homogenisator-Vorrichtung mit gegenläufig rotierbaren Zahnkränzen
EP1844849B1 (de) * 2006-03-29 2010-12-01 Vakumix Rühr- und Homogenisiertechnik Aktiengesellschaft Vorrichtung zum Homogenisieren, Mischen oder Dispergieren fliessfähiger Medien
DE102008010841A1 (de) * 2008-02-25 2009-08-27 Lipp Mischtechnik Gmbh Mischvorrichtung mit an einem Mischbehälter befestigten Mischtopf
BE1022904B1 (nl) * 2015-07-13 2016-10-11 Packo Inox N.V. Rotor-stator mixer
DE102019102583A1 (de) * 2019-02-01 2020-08-06 Ystral Gmbh Maschinenbau + Processtechnik Rotor für eine Vorrichtung zum Mischen von Pulver und Flüssigkeit und Vorrichtung zum Mischen von Pulver und Flüssigkeit
CN112210421A (zh) * 2020-10-22 2021-01-12 佛山肯天新材料科技有限公司 一种石墨烯润滑脂生产工艺
EP4309773A4 (en) * 2022-06-08 2024-07-24 Contemporary Amperex Technology Co., Limited Mixed dispersion device
WO2024100447A2 (de) * 2022-11-07 2024-05-16 Frymakoruma Ag Homogenisator sowie vakuumprozessanlage und verfahren damit
US11931707B1 (en) * 2023-11-16 2024-03-19 Herman Hockmeyer System for agglomerate mixing having a rotor and angular slotted stator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0201767A2 (de) * 1985-05-17 1986-11-20 YTRON Dr. Karg GmbH Zyklon-Mischvorrichtung zum kontinuierlichen Mischen von pulverigen Stoffen mit Flüssigkeiten

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH466818A (fr) * 1967-12-08 1968-12-15 Pista Sa Procédé de traitement d'un liquide au moyen d'un fluide gazeux et installation pour la mise en oeuvre de ce procédé
GB1388889A (en) * 1972-08-11 1975-03-26 Giusti Son Ltd T Rotary mixing apparatus
DE2805942C2 (de) * 1978-02-13 1986-09-18 Alwin 2800 Bremen Berents Vorrichtung zum Homogenisieren fließfähiger Stoffe
DE3243671A1 (de) * 1982-11-25 1984-05-30 Karg Ytron Gmbh Vorrichtung zum kontinuierlichen mischen pulvriger stoffe mit fluessigkeiten
DE3417242A1 (de) * 1984-05-10 1985-11-14 Haagen & Rinau Homogenisiereinrichtung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0201767A2 (de) * 1985-05-17 1986-11-20 YTRON Dr. Karg GmbH Zyklon-Mischvorrichtung zum kontinuierlichen Mischen von pulverigen Stoffen mit Flüssigkeiten

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19916053B4 (de) * 1999-04-09 2005-05-19 Vakumix Rühr- und Homogenisiertechnik AG Vorrichtung zum Homogenisieren fließfähiger Stoffe
DE19923378C2 (de) * 1999-05-21 2003-04-30 Vakumix Ruehr Und Homogenisier Vorrichtung zum Homogenisieren fließfähiger Stoffe
JP2013132573A (ja) * 2011-12-26 2013-07-08 Jtekt Corp 混合分散装置

Also Published As

Publication number Publication date
EP0290033A1 (de) 1988-11-09
ATE80807T1 (de) 1992-10-15
DE3715331A1 (de) 1988-12-01
DE3715331C2 (enrdf_load_stackoverflow) 1992-11-26
DE3874801D1 (de) 1992-10-29

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