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EP2001581B1 - Homogénéisateur - Google Patents

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Publication number
EP2001581B1
EP2001581B1 EP07727524A EP07727524A EP2001581B1 EP 2001581 B1 EP2001581 B1 EP 2001581B1 EP 07727524 A EP07727524 A EP 07727524A EP 07727524 A EP07727524 A EP 07727524A EP 2001581 B1 EP2001581 B1 EP 2001581B1
Authority
EP
European Patent Office
Prior art keywords
rotor
stator
homogenizer
coupling
rotation
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.)
Active
Application number
EP07727524A
Other languages
German (de)
English (en)
Other versions
EP2001581A1 (fr
Inventor
Andreas Keller
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.)
Hebold Mixing&More GmbH
Original Assignee
Hebold Mixing&More GmbH
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 Hebold Mixing&More GmbH filed Critical Hebold Mixing&More GmbH
Publication of EP2001581A1 publication Critical patent/EP2001581A1/fr
Application granted granted Critical
Publication of EP2001581B1 publication Critical patent/EP2001581B1/fr
Active legal-status Critical Current
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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
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/271—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator
    • B01F27/2711—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed radially between the surfaces of the rotor and the stator provided with intermeshing elements
    • 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
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/31—Couplings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/41—Emulsifying

Definitions

  • the invention relates to a homogenizer for the production of flowable products, for example. Emulsions, suspensions or similar products, with a rotor blades having and drivable by a motor rotor and a flow elements having rotatable stator.
  • Such homogenizers are conventionally mounted under containers to mix and homogenize the contents of the container.
  • Such a homogenizer has in addition to the rotor drivable by a motor and a circular annular stator whose flow elements are arranged at least partially between two - each arranged along concentric circular lines - groups of rotor blades.
  • the product flows from inside to outside, similar to a centrifugal pump. It occurs through openings provided between the flow elements of the stator. In such a passage, the product is subjected to shearing forces and turbulence. This leads to a good mixing of the product and thus to a homogeneous end product.
  • a large number of flowable products such as e.g. Emulsions and suspensions.
  • the homogenizer can also be used as a cleaning pump.
  • cleaning it is mainly on a high throughput of the washing liquid. Therefore, a reduction of the throughput, due to the flow resistance of the stator, is disadvantageous even in such a cleaning process.
  • additional conveying elements in the form of pumping blades are mounted behind the stator. It is conventionally also provided a special tooth geometry in which, depending on the direction of rotation of the rotor, a larger passage cross-section for the medium flowing through the stator can be realized as in the opposite direction of rotation. In this opposite direction of rotation - due to the geometry - the passage of the product considerably more difficult.
  • a disadvantage of such known homogenizers is that a promotion of the product without shearing is not possible. This can cause unwanted effects, especially in the case of sensitive products, in which, for example, the acting shear forces cause changes in the structure of the product.
  • the stator of this homogenizer is also a rotatable element, and therefore rotatable Stator formed.
  • the rotatable stator is driven independently of the rotor.
  • two drive motors are necessary.
  • such drive motors are complicated and expensive.
  • two drive motors require essentially twice the maintenance.
  • the probability of failure of the homogenizer and thus the probability of a plant shutdown doubles.
  • two drive motors also lead to an increased space requirement, which often leads under a container to a very narrow and therefore only consuming to maintain and clean construction.
  • the invention is therefore based on the problem of providing a simplified homogenizer which eliminates the aforementioned disadvantages of known homogenizers.
  • the invention solves this problem by means of a homogenizer of the type mentioned, which further comprises a coupling device for selectively coupling or decoupling the stator with and from the rotor, wherein in a coupled state, the stator is driven by the rotor.
  • stator is not to be understood as meaning that the stator is permanently fixed. Rather, the stator can be operated in a fixed or in a rotating mode. That the stator is - as well as the rotor - rotatable.
  • the coupling device couples the stator to the rotor.
  • the coupling device advantageously creates a mechanical connection between a drive shaft of the rotor and the stator, so that the stator is carried along by the rotor and driven with it.
  • the stator is fixed in a decoupled state of the rotor and stator.
  • the stator is therefore designed lockable by means of a locking device.
  • the locking device is designed as a clamping device or brake.
  • the coupling device has a mechanical or electromechanical coupling with which the rotor and the stator are mechanically connectable.
  • the rotor and the stator are preferably connected rigidly to each other.
  • the coupling may be formed either mechanically or electromechanically.
  • the coupling is formed electromagnetically switchable. For example. can be actuated by energizing an electromagnet, the clutch, in particular closed or opened, are.
  • the clutch is designed to be automatically switching or externally switched.
  • An automatically switching clutch can automatically establish the coupled state in the presence of certain operating conditions.
  • an externally connected clutch couples or decouples rotor and stator as a function of an external switching request. This switching request can be supplied to the homogenizer either by an operator or by a control device.
  • the clutch on driver and cam This means that a particularly simple coupling between the rotor and stator can be achieved.
  • the coupling device is designed such that in a first direction of rotation of the rotor, the rotor is coupled to the stator such that the rotor entrains the stator, and that in a second, opposite to the first direction of rotation, the rotor and the stator are decoupled from each other.
  • the stator rotates with, i. the stator is driven by the rotor.
  • the rotor and the stator are decoupled from each other in the second direction of rotation. In particular, then the stator is locked or determined.
  • the homogenizer In the decoupled state, the homogenizer can be operated in its original mode of operation in which shearing effects on the product are exerted on the product by a differential speed between fixed stator and rotating rotor. In the opposite direction of rotation of the rotor, however, the stator is taken from the coupled rotor and rotated. The mechanical coupling device thereby causes the speed of the stator is in a fixed unchangeable relationship to the speed of the rotor, for example. Rotate the rotor and stator in the same direction at the same speed, so that no shear forces are exerted on the product.
  • the original mode of operation of the fixed stator and rotary rotor homogenizer may be in the opposite direction of rotation, i. be performed in the second direction of rotation to introduce shear energy and turbulence in the product.
  • the homogenizer can be used in the pumping operation, while it is used in the opposite direction of rotation in the original Homogenisier réelle.
  • additional facilities such as circulating or cleaning pumps in pumping.
  • the coupling device is designed as an overrunning clutch.
  • An overrunning clutch is particularly suitable easy way to rotate the stator with the rotor.
  • the principle of such overrunning clutches is used, for example, in bicycles. By reversing the direction of rotation, either the stator is taken away or decoupled from the rotor. In the case of coupling or entrainment of the stator by the rotor, the stator and rotor rotate at the same speed.
  • there is no differential speed between rotor and stator thus, no shear is exerted on the product as it passes through the homogenizer.
  • the resistances to the passage of the product through the homogenizer are reduced.
  • the turbulence is reduced to the product. This is advantageous because it thus receives a higher pumping action, ie conveying effect of the homogenizer.
  • the coupling device to a transmission which is designed such that in the coupled state of the rotor and stator is a fixed speed ratio of the rotational speed of the rotor to the rotational speed of the stator.
  • the transmission is only effective in the coupled state, i. especially only in the o.g. first direction of rotation of the rotor, in which the rotor rotates the stator.
  • the stator may rotate in the coupled state at a higher or lower speed than the rotor.
  • the speed is specified by the gearbox.
  • the coupling device is designed such that in the coupled state, the rotor and the stator are rotatable in the same or opposite direction of rotation.
  • the same direction of rotation there is no or only a slight difference in speed between rotor and stator, while in the case of opposite direction of rotation a particularly high differential speed between rotor and stator is achieved.
  • An advantage of this embodiment is that in the opposite direction of rotation, ie in mating mode or overtaking, between the rotor and stator despite increased differential speed and shearing no second drive unit is necessary. This leads to a cost-effective and space-saving design.
  • the coupling device is designed such that it either allows either a concurrent or opposite operation of the rotor and stator. In this case, appropriate switching devices are provided on the homogenizer.
  • the homogenizer allows either only an opposite operation of rotor and stator or only a concurrent operation of rotor and stator.
  • Fig. 1 shows a arranged below a container 10 homogenizer 11 with a drive shaft 12 connected to a rotor 13 and a rotatable stator 14th
  • a product to be mixed and finely processed which is homogenized by means of the homogenizer 11 and circulated.
  • the product passes through an opening 15 from the container 10 into the homogenizer 11 and is transported in the homogenizer radially or obliquely from the inside to the outside.
  • the product is then conveyed out of the homogenizer 11 via a circulation line 16 and either back into the container 10 or drained via a valve 17.
  • Fig. 2 shows another embodiment of the attachment of a homogenizer 11 to a container 10 '.
  • the homogenizer corresponds in its construction to the in Fig. 1
  • the container 10 ' has further radially outer openings 18, through which the product is conveyed by the homogenizer 11 back into the container 10'.
  • an internal homogenization of the container contents is made possible, ie the product is returned directly from the output of the homogenizer back into the container.
  • a homogenizer can also be installed in or on a pipeline or elsewhere in a processing process.
  • Fig. 3 shows the in the Fig. 1 and 2 only shown schematically homogenizer 11 in detail.
  • the upper part of Fig. 3 shows the homogenizer 11 in a side sectional view, while the lower part of Fig. 3 shows the homogenizer 11 in a horizontal sectional view.
  • Such a homogenizer 11 is also referred to as Zahnkranzdispergiermaschine.
  • the rotor 13 has a disk-like base element 19 on which a group of rotor blades 20 are arranged along a circular line. Along a further circular line, which is arranged concentrically to the aforementioned circular line, there is another group of rotor blades 21. Finally, a third group of rotor blades 22 is located along another concentrically arranged circular line.
  • each pair of groups of rotor blades is a group of flow elements between the group of rotor blades 20 and the group of rotor blades 21 a group of flow elements 23. Furthermore, there is another group between the group of rotor blades 21 and the group of rotor blades 22 Both the group of flow elements 23 and the group of flow elements 24 are each arranged along a circular line arranged concentrically to the above-mentioned circular lines.
  • a homogenizer has only one group of rotor blades, which are arranged along only one circular line, and only one group of flow elements of the stator, which are likewise provided only along a circular line arranged concentrically to the aforementioned circular line.
  • the flow elements 23, 24 are arranged on a further base element 25 of the stator 14.
  • the rotor 13 is connected via a drive shaft 26 to a drive motor 27.
  • a flowable product passes through an opening 28 in the homogenizer 11 and a discharge device 29 from the homogenizer 11 out.
  • the stator 14 is formed as a rotatable stator. It is therefore mounted on a housing 31 of the homogenizer 11 by means of a bearing 30, in particular a ball bearing.
  • bearing 32 Between the stator 14 and the rotor 13 is another bearing 32, in particular ball bearings, which allows a relative rotational movement between the rotor 13 and the stator 14.
  • the stator 14 has a shaft 33, which is designed as a hollow shaft and through which the drive shaft 26 of the rotor 13 passes.
  • This shaft 33 can be coupled via cams 34 and an axially displaceable driver 35 or a shift sleeve with cams 36 provided on the drive shaft 26.
  • the driver 35 is moved either manually or by means of an adjusting device axially to produce the coupled or the decoupled state.
  • a locking device for selectively detecting the status 14 is also provided.
  • the locking device By means of the locking device, the stator 14 can be locked or released, to then be operated as a rotating stator 14 can.
  • the locking device may be formed in particular as a brake or clamping device.
  • the drive shaft 26 of the rotor 13 can be rotated in both directions of rotation.
  • Fig. 4 shows a further embodiment of a homogenizer 11 'according to the invention.
  • the homogenizer 11 ' largely corresponds to the in Fig. 3 Homogenizer 11.
  • the same reference numerals are therefore used for the same parts.
  • only the differences are compared Fig. 3 explained, with unexplained elements accordingly Fig. 3 are formed.
  • This in Fig. 4 shown embodiment uses as a coupling device between the rotor 13 'and the stator 14' an overrunning clutch 39.
  • This overrunning clutch 39 causes, in a first rotational direction according to the reference numeral 37 of the rotor 13 ', the drive shaft 26' of the rotor 13 'with the drive shaft 33' the rotatable stator 14 'is coupled. That is, the rotor 13 'and the stator 14' rotate both in the same direction of rotation 37th
  • the drive shaft 26 'of the rotor 13' is supported by means of a further bearing 40, in particular ball bearing, against the housing 31 'of the homogenizer 11'.
  • the shaft 33 'of the rotor 13' is connected via the one-way clutch 39 to the shaft 26 'of the rotor 13' in the manner described above.
  • Fig. 5 shows a further embodiment of a homogenizer 11 "In this embodiment, the coupling device for coupling rotor 13" and stator 14 "has a gear 41.
  • This electromechanical clutch 46 has an electromagnet In the engaged state, the gear 45 is connected to the drive shaft 26 "of the rotor 13." By actuating the electromagnet is a torsionally rigid, in particular positive or frictional connection between the drive shaft 26 "and the gear 45 and thus also with the stator 14" created.
  • a fixed speed ratio between the rotational speed of the rotor 13 "and the stator 14" can be predetermined.
  • the transmission 41 may also have a plurality of shift stages with a plurality of fixed predefined speed ratios.
  • the gear 41 can also cause a reversal of rotation, so that, for example, the rotor 13 "rotates in the direction of rotation 37, while the stator 14" rotates in the direction of rotation 38.
  • the differential speed between rotor 13 "and stator 14" can be significantly increased to exert increased shear forces on the product.
  • the invention provides a homogenizer with a rotor and a rotatable stator, in which the rotatable stator can be optionally coupled to the rotor, so that the rotation of the stator is dependent on the rotation of the rotor.
  • the pumping action of a homogenizer can be significantly improved without additional drive motors. It only requires a coupling device for coupling the stator and rotor.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Crushing And Grinding (AREA)
  • Furan Compounds (AREA)

Claims (10)

  1. Homogénéisateur pour la fabrication de produits aptes à l'écoulement, par exemple des émulsions, des suspensions ou des produits similaires, comportant un rotor (13,13',13'') présentant une pale de rotor (18,19,20) et pouvant être entraîné au moyen d'un moteur (27) et un stator rotatif (14,14',14'') présentant un élément d'écoulement (23,24),
    caractérisé par
    un dispositif de couplage (34,35,36 ;39 ;46) pour coupler ou découpler au choix le stator (14,14',14'') avec le, respectivement du rotor (13,13',13") de telle sorte que dans un état couplé le stator (14,14',14'') puisse être entraîné par le rotor (13,13',13").
  2. Homogénéisateur selon la revendication 1,
    caractérisé en ce que
    dans un état découplé du rotor (13,13',13'') et du stator (14,14',14''), le stator (14,14',14'') est immobilisé, notamment arrêté.
  3. Homogénéisateur selon la revendication 1 ou 2,
    caractérisé en ce que
    le dispositif de couplage (34,35,36 ;39 ;46) présente un embrayage mécanique (34,35 ;39) ou électromécanique (46), avec lequel le rotor (13,13',13'') et le stator (14,14',14'') peuvent être reliés mécaniquement.
  4. Homogénéisateur selon la revendication 3,
    caractérisé en ce que
    l'embrayage (34,35,36 ;39 ;46) est configuré de manière à pouvoir être activé électromagnétiquement.
  5. Homogénéisateur selon la revendication 3 ou 4,
    caractérisé en ce que
    l'embrayage (34,35,36 ;39 ;46) est configuré de manière à être activé automatiquement ou de manière externe.
  6. Homogénéisateur selon la revendication 5,
    caractérisé en ce que
    l'embrayage présente un doigt d'entraînement (35) et une came (34).
  7. Homogénéisateur selon une des revendications précédentes,
    caractérisé en ce que
    le dispositif de couplage (34,35,36 ;39 ;46) est configuré de telle sorte que dans une première direction de rotation (37) du rotor (13,13',13''), le rotor (13,13',13'') soit couplé avec le stator (14,14',14'') de telle sorte que le rotor (13,13',13'') entraîne le stator (14,14',14''), et en ce que dans une deuxième direction de rotation (38) contraire à la première direction de rotation (37), le rotor (13,13',13'') et le stator (14,14',14') soient découplés l'un de l'autre.
  8. Homogénéisateur selon une des revendications précédentes,
    caractérisé en ce que
    le dispositif de couplage présente un embrayage en roue libre (39).
  9. Homogénéisateur selon une des revendications précédentes,
    caractérisé en ce que
    le dispositif de couplage présente une transmission (41), qui est configurée de telle sorte que en l'état découplé du rotor (13") et du stator (14"), un rapport de vitesse de rotation fixe de la vitesse de rotation du rotor (13'') par rapport à la vitesse de rotation du stator (14") soit présent.
  10. Homogénéisateur selon une des revendications précédentes,
    caractérisé en ce que
    le dispositif de couplage est configuré de telle sorte que en l'état couplé, le rotor (13'') et le stator (14") peuvent tourner dans une direction de rotation identique ou opposée.
EP07727524A 2006-03-29 2007-03-29 Homogénéisateur Active EP2001581B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006014817 2006-03-29
PCT/EP2007/053052 WO2007113220A1 (fr) 2006-03-29 2007-03-29 Homogénéisateur

Publications (2)

Publication Number Publication Date
EP2001581A1 EP2001581A1 (fr) 2008-12-17
EP2001581B1 true EP2001581B1 (fr) 2009-07-29

Family

ID=38229896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07727524A Active EP2001581B1 (fr) 2006-03-29 2007-03-29 Homogénéisateur

Country Status (4)

Country Link
EP (1) EP2001581B1 (fr)
AT (1) ATE437694T1 (fr)
DE (1) DE502007001196D1 (fr)
WO (1) WO2007113220A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104174323A (zh) * 2014-08-28 2014-12-03 于新生 一种具有碾、搓、磨功能的乳化搅拌设备

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2319821A (en) * 1941-07-02 1943-05-25 William A Mclean Mixing device
US2685436A (en) * 1950-08-31 1954-08-03 Goodrich Co B F Apparatus for foaming liquids
US3271194A (en) * 1964-01-27 1966-09-06 Yokohama Seito Kabushiki Kaish Solidification of saccharide solutions
FR2620044B1 (fr) * 1987-09-08 1989-12-22 Pillon Francis Procede et dispositif pour epandre ou melanger des pulverulents par depot de particules en suspension dans l'air
DE19614295A1 (de) * 1995-04-21 1996-10-24 Friedrich Dr Ing Vock Verfahren und Vorrichtung zum Nassmahlen und Dispergieren von Feststoffpartikeln in Flüssigkeiten
DE20002920U1 (de) * 2000-02-18 2000-04-20 Schröder & Boos Misch- und Anlagentechnik GmbH & Co. KG, 27578 Bremerhaven Homogenisator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104174323A (zh) * 2014-08-28 2014-12-03 于新生 一种具有碾、搓、磨功能的乳化搅拌设备

Also Published As

Publication number Publication date
EP2001581A1 (fr) 2008-12-17
WO2007113220A8 (fr) 2008-03-27
ATE437694T1 (de) 2009-08-15
DE502007001196D1 (de) 2009-09-10
WO2007113220A1 (fr) 2007-10-11

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