EP2001581A1 - Homogenizer - Google Patents
HomogenizerInfo
- Publication number
- EP2001581A1 EP2001581A1 EP07727524A EP07727524A EP2001581A1 EP 2001581 A1 EP2001581 A1 EP 2001581A1 EP 07727524 A EP07727524 A EP 07727524A EP 07727524 A EP07727524 A EP 07727524A EP 2001581 A1 EP2001581 A1 EP 2001581A1
- 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.)
- Granted
Links
- 230000008878 coupling Effects 0.000 claims abstract description 37
- 238000010168 coupling process Methods 0.000 claims abstract description 37
- 238000005859 coupling reaction Methods 0.000 claims abstract description 37
- 239000000839 emulsion Substances 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 239000000725 suspension Substances 0.000 claims abstract description 4
- 230000009969 flowable effect Effects 0.000 claims description 4
- 239000000047 product Substances 0.000 description 32
- 238000005086 pumping Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000010008 shearing Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 241000282472 Canis lupus familiaris Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
- B01F27/27—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.
- a further homogenizer in which the homogenization effect can be influenced and the shearing action and the pumping action should be adaptable to the respective requirements.
- 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 to be cleaned 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 electro-mechanical 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 has dogs and cams. 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 of 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, the stator is then arrested or locked.
- 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 counter running operation or overtaking, between rotor and stator despite increased differential speed and shear no second drive unit is necessary. This leads to a cost-effective and space-saving design.
- the coupling device is designed in such a way that it either allows a synchronous or opposite operation of the rotor and the 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. 2 shows a homogenizer according to the invention arranged below a container for homogenizing a product in the container
- FIG. 3 shows a first embodiment with a mechanical coupling of a homogenizer according to the invention in a lateral sectional view and in a sectional view from above;
- Fig. 4 shows a first embodiment with a one-way clutch of a homogenizer according to the invention in a lateral sectional view
- FIG. 5 shows a first exemplary embodiment with a gear and an electromechanical coupling of a homogenizer according to the invention in a lateral sectional view.
- 1 shows a homogenizer 11 arranged below a container 10 with a rotor 13 connected to a drive shaft 12 and a rotatable stator 14.
- the container 10 In the container 10 is 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 1 1 and is transported in the homogenizer radially or obliquely from the inside out.
- the product is then passed out of the homogenizer 11 via a circulation line 16 and either back into the container
- Fig. 2 shows another embodiment of the attachment of a Homogenisa- sector 11 to a container 10 '.
- the homogenizer corresponds in its construction to the homogenizer 11 shown in FIG. 1.
- the container 10 ' has, in addition to the centrally arranged opening 14, further radially outer openings 18, through which the product from the homogenizer 11 is returned to the container 10 'is promoted.
- an internal homogenization of the container contents is enabled, i. The product is returned directly from the homogenizer outlet to the tank.
- a homogenizer can also be installed in or on a pipeline or elsewhere in a processing process.
- FIG. 3 shows the homogenizer shown only schematically in FIGS. 1 and 2
- FIG. 3 shows the homogenizer 11 in a lateral sectional view, while the lower part of FIG. 3 shows the homogenizer 11 in a horizontal sectional view.
- a homogenizer 1 1 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.
- a further group of rotor blades 21 is located along another circular line, which is arranged concentrically to the above-mentioned circular line.
- a third group of rotor blades 22 is located along another concentrically arranged circular line.
- 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 aforementioned 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 1 1 and a discharge device 29 from the homogenizer 1 1 out.
- the stator 14 is formed as a rotatable stator. He is therefore by means of a bearing 30, in particular ball bearings, mounted on a housing 31 of the homogenizer 1 1. Der Lager 31 ist in dem Geouse 31 des Homogenisators 1 1 anrobe.
- 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 rotor 14 has a shaft 33, which is designed as a hollow shaft and passes through which the drive shaft 26 of the rotor 13.
- 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 determining 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.
- FIG. 4 shows a further exemplary embodiment of a homogenizer 11 'according to the invention.
- the homogenizer 11 ' corresponds largely to the homogenizer 1 1 shown in FIG. 3.
- the same reference numerals are used.
- FIG. 3 only the differences with respect to FIG. 3 are explained, wherein unexplained elements according to FIG. 3 are formed.
- the exemplary embodiment shown in FIG. 4 uses a one-way clutch 39 as coupling device between the rotor 13 'and the stator 14'.
- This freewheel clutch 39 causes the drive shaft 26 'of the rotor to rotate in a first direction of rotation according to the reference number 37 of the rotor 13' 13 'is coupled to the drive shaft 33' of the rotatable stator 14 '. That the rotor 13 'and the stator 14' both rotate in the same direction of rotation 37.
- 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 1 1'.
- 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.
- the coupling device for coupling rotor 13" and stator 14 has a gear 41.
- the shaft 33" of the stator 14 has a toothed ring or gear-shaped section 42.
- This section 42 is in engagement with a first gear 43 of the gear 41, which in turn is rotationally rigidly connected to a second gear 45 via a shaft 44.
- This second gear 45 is connected to an electromechanical clutch 46.
- This electromechanical clutch 46 In the coupled state, the gear 45 is connected to the drive shaft 26 "of the rotor 13.”
- actuating the electromagnet a torsionally rigid, in particular special 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)
- Furan Compounds (AREA)
- Crushing And Grinding (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006014817 | 2006-03-29 | ||
PCT/EP2007/053052 WO2007113220A1 (en) | 2006-03-29 | 2007-03-29 | Homogenizer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2001581A1 true EP2001581A1 (en) | 2008-12-17 |
EP2001581B1 EP2001581B1 (en) | 2009-07-29 |
Family
ID=38229896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07727524A Active EP2001581B1 (en) | 2006-03-29 | 2007-03-29 | Homogenizer |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2001581B1 (en) |
AT (1) | ATE437694T1 (en) |
DE (1) | DE502007001196D1 (en) |
WO (1) | WO2007113220A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104174323B (en) * | 2014-08-28 | 2015-12-02 | 于新生 | A kind of emulsification mixing plant with stone roller, stranding, mill function |
Family Cites Families (6)
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 (en) * | 1987-09-08 | 1989-12-22 | Pillon Francis | PROCESS AND DEVICE FOR SPREADING OR MIXING POWDERS BY DEPOSITION OF AIR-SUSPENDED PARTICLES |
DE19614295A1 (en) * | 1995-04-21 | 1996-10-24 | Friedrich Dr Ing Vock | Method and device for wet grinding and dispersing solid particles in liquids |
DE20002920U1 (en) * | 2000-02-18 | 2000-04-20 | Schroeder & Boos Misch Und Anl | Homogenizer |
-
2007
- 2007-03-29 WO PCT/EP2007/053052 patent/WO2007113220A1/en active Application Filing
- 2007-03-29 AT AT07727524T patent/ATE437694T1/en active
- 2007-03-29 DE DE502007001196T patent/DE502007001196D1/en active Active
- 2007-03-29 EP EP07727524A patent/EP2001581B1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2007113220A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2007113220A8 (en) | 2008-03-27 |
ATE437694T1 (en) | 2009-08-15 |
WO2007113220A1 (en) | 2007-10-11 |
DE502007001196D1 (en) | 2009-09-10 |
EP2001581B1 (en) | 2009-07-29 |
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