EP0988887A1 - Homogénisateur avec un dispositif de protection sur le rotor - Google Patents

Homogénisateur avec un dispositif de protection sur le rotor Download PDF

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Publication number
EP0988887A1
EP0988887A1 EP98116036A EP98116036A EP0988887A1 EP 0988887 A1 EP0988887 A1 EP 0988887A1 EP 98116036 A EP98116036 A EP 98116036A EP 98116036 A EP98116036 A EP 98116036A EP 0988887 A1 EP0988887 A1 EP 0988887A1
Authority
EP
European Patent Office
Prior art keywords
openings
toothing
homogenizer
rotor
stator
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
EP98116036A
Other languages
German (de)
English (en)
Other versions
EP0988887B1 (fr
Inventor
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.)
Vakumix Ruehr- und Homogenisiertechnik AG
Original Assignee
Vakumix Ruehr- und Homogenisiertechnik AG
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 Vakumix Ruehr- und Homogenisiertechnik AG filed Critical Vakumix Ruehr- und Homogenisiertechnik AG
Priority to DE59807124T priority Critical patent/DE59807124D1/de
Priority to DE29822149U priority patent/DE29822149U1/de
Priority to EP98116036A priority patent/EP0988887B1/fr
Publication of EP0988887A1 publication Critical patent/EP0988887A1/fr
Application granted granted Critical
Publication of EP0988887B1 publication Critical patent/EP0988887B1/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
    • B01F27/27—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

Definitions

  • the invention relates to a homogenizer for homogenizing flowable materials, with a rotor and a stator, the have teeth which are concentric with one another.
  • Homogenizers are among others in pharmaceutical, cosmetic, chemical and food industries for manufacturing of creams, ointments, pastes, mayonnaises and similar products used. They are usually at the bottom of a mixing container arranged in which the substances are mixed and homogenized become.
  • the homogenizer is often used as a rotor-stator dispersing machine trained, but can also be a so-called Circulating agitator to achieve a better pumping effect his.
  • a generic homogenizer is, for example, out DE 195 37 303 A1 known.
  • Homogenizers usually work at high speeds. If hard foreign bodies in the mixture to be processed, in particular Metal parts are included, these can be from the homogenizer be sucked in and damage or destroy it. This is particularly problematic when in the Product to be manufactured powder, pigments or other solids should be mixed in, as these are often metallic Foreign bodies included. It is also possible that in the mixing plant loosen screws, nuts and the like and fall into the homogenizer.
  • the present invention has for its object a To create a homogenizer of the type mentioned that one Protection against damage or destruction by hard Has foreign bodies, this protection the homogenizer performance does not reduce or at least insignificantly.
  • the invention solves this problem in that the rotor is radial a protective toothing on the inside of the first stator toothing with openings one to be kept to the minimum size Foreign objects adapted clear width.
  • the homogenizer has one rotor and one Stator on which rotates relative to each other can be moved.
  • the stator is preferably stationary and the rotor is rotatable, but this is within the scope of the invention not mandatory. Possibly. the stator (e.g. counter to the rotor). The only thing that matters is that rotor and stator rotate relative to each other can to the homogenization and described in more detail below To achieve dispersing effect.
  • the rotor and stator have teeth that are concentric with one another on.
  • toothing denotes any openings in a circumferential wall of the rotor or Stator through which the mix in the homogenizer operation in the radial direction penetrates to the outside.
  • Such an interlocking can create individual openings in an otherwise closed, in have circumferential wall, but often the toothing formed by a on a peripheral portion a plurality of rotor or stator arranged by itself axially extending teeth, the baffles for the homogenized material exhibit. So far in the claims and the description the terms “axial” or "radial” are used, the axial direction is always through the axis of rotation of the rotor Are defined.
  • the technical effect of the concentric gears is the following: that in the usually axial inlet of the homogenizer flowing in is mixed from the radial innermost rotor teeth detected and at a peripheral speed according to the peripheral speed of this Gearing applied. Supported by the centrifugal force (if necessary through separate pump blades in the rotor or the pumping action the gear surfaces) the material is thrown outwards and hits the with high kinetic energy then the following stator teeth. The kinetic energy of the Good is converted into a dispersing effect. Radially outside from this first stator toothing further rotor and connect stator gears if necessary.
  • homogenizer can exert its dispersing effect, he needs at least one rotor and one stator toothing. As explained below, this rotor toothing can also be formed by the protective toothing.
  • homogenizers each two (possibly also have several) rotor and stator teeth, which are arranged concentrically to each other.
  • This protective toothing prevents that in the homogenizer Foreign bodies entering radially outward onto the first stator toothing be thrown and the homogenizer to destroy.
  • the foreign bodies are removed from the protective toothing caught and remain in the rotor, they can be cleaned of the homogenizer can be removed.
  • the clear width of the openings this protective toothing must not be larger than that minimal size of possible foreign bodies whose passage through the interlocking rotor / stator gears one still want to prevent.
  • the largest clear width of the openings of the Protective teeth are often in the range 1 to 5 mm, preferably 2 to 4 mm. It is usually sufficient that Clear width to be dimensioned so that metallic foreign bodies from the size of a screw or nut of thread size M3 be prevented from passing through.
  • the protective toothing according to the invention brings about not a reduction in performance, on the contrary an increase in performance of the homogenizer.
  • the openings of the protective toothing contain wall sections running in the axial direction or Wall surfaces.
  • the openings of the protective teeth be rectangular, with two opposite sides of the rectangle run in the axial direction.
  • This in the axial direction running wall surfaces can with the first stator teeth include an angle that is between 0 and 90 °, preferably between 0 and 60 °, more preferably between 0 and is 40 °.
  • An angle of 0 ° means that at a corresponding Rotary position of the rotor and stator to each other Walls of protective toothing and first stator toothing aligned, i.e. lie in one plane.
  • the intermeshing rotor and stator teeth have depending on the size of the homogenizer axial height of a few centimeters or more. It is therefore preferred that the protective toothing in the axial direction seen at least two, preferably at least three has openings arranged one above the other.
  • a particularly good dispersing effect is obtained and delivery rate of a homogenizer according to the invention, when facing each axial row of openings the rows adjacent in the circumferential direction of the protective toothing is arranged offset from openings in the axial direction.
  • the axial displacement is preferably an amount that half the sum of the axial clear width of an opening and axial thickness of an opening separating two openings in the axial direction Corresponds to web. This means that the Separator between two axially arranged openings at the axial height of the center of an opening in Adjacent row of openings runs circumferentially (see also Fig. 3).
  • the homogenizer according to the invention has one with a hub 2 provided shaft 1 by one in the drawing Drive, not shown, is driven. With wave 1 a rotor 3 rotation test is connected.
  • the rotor 3 has two rotor teeth 4 and 5 concentric with each other.
  • At the inner rotor toothing 4 is the one according to the invention Protective toothing.
  • the homogenizer housing 6 With the homogenizer housing 6 the stator is connected, the two concentric to each other Stator teeth 7, 8 has.
  • One connected to the stator Stator cover 9 covers the rotor 3 on its outer circumference from and simultaneously forms the inlet designated 10 of the homogenizer.
  • the Process of the homogenizer forms. It is with a drain nozzle 12 connected.
  • the homogenizer according to the invention is in an opening on the bottom one used at 13 arranged mixing container.
  • annular channel 14 is provided, which the drain 11 with the Product space of the mixing container 13 connects.
  • Outlet 11 of the homogenizer At low pressure in Outlet 11 of the homogenizer is the sealing ring 16 sealing and the material to be homogenized is conveyed through the nozzle 12.
  • FIG. 2 It can be seen in Fig. 2 that radially inward from the first, i.e. radially innermost stator 7 the inventive Protective toothing 4 is arranged.
  • This protective toothing is formed as a ring, into which (e.g. by means of a laser) Openings of the desired size are cut.
  • the stator gears 7, 8 and the radially outer toothing 5 are formed by rows of axially extending ones individual teeth, as from the synopsis of FIGS. 1 and 2 can be seen.
  • Fig. 3 it can be seen that adjacent axial rows of openings 19 of the protective toothing 4 are arranged offset to one another in the axial direction (cf. for example, the rows labeled 20 and 21). This offset Arrangement of the rows of openings is preferred according to the invention, but not absolutely necessary.
  • Fig. 2 it can be seen that the axially extending wall surfaces 22 of the rotor teeth 5 and 23, 24 of the stator teeth 7, 8 run exactly in the radial direction, i.e. parallel to the axial plane indicated at 25.
  • these wall surfaces 22, 23, 24 also relative to the radial direction be inclined to a higher pumping and / or dispersing effect to achieve.
  • the wall surfaces 26 running in the axial direction are the protective toothing 4 with respect to the radial direction (or Axial plane) inclined by an angle ⁇ indicated at 27 arranged.
  • the following table shows the increase in performance achieved by the protective toothing according to the invention compared to a conventional homogenizer which has no facilities for protection against foreign body entry.
  • the experiments were carried out with concentrated aqueous sorbitol solution (70% by weight sorbitol, 30% by weight water).
  • the table shows the factors around which the delivery rate of a homogenizer according to the invention different operating conditions compared to a conventional one Homogenizer (shown in Fig. 4) increased.
  • the conventional one Homogenizer has no protective teeth on which Pump wing 18 closes the first one radially on the outside Stator teeth 7 on. You can see that on average the output increased by about a third.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Rotary Pumps (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP98116036A 1998-08-25 1998-08-25 Homogénisateur avec un dispositif de protection sur le rotor Expired - Lifetime EP0988887B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59807124T DE59807124D1 (de) 1998-08-25 1998-08-25 Homogenisator mit Schutzvorrichtung auf dem Rotor
DE29822149U DE29822149U1 (de) 1998-08-25 1998-08-25 Homogenisator mit Schutzverzahnung
EP98116036A EP0988887B1 (fr) 1998-08-25 1998-08-25 Homogénisateur avec un dispositif de protection sur le rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98116036A EP0988887B1 (fr) 1998-08-25 1998-08-25 Homogénisateur avec un dispositif de protection sur le rotor

Publications (2)

Publication Number Publication Date
EP0988887A1 true EP0988887A1 (fr) 2000-03-29
EP0988887B1 EP0988887B1 (fr) 2003-02-05

Family

ID=8232512

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98116036A Expired - Lifetime EP0988887B1 (fr) 1998-08-25 1998-08-25 Homogénisateur avec un dispositif de protection sur le rotor

Country Status (2)

Country Link
EP (1) EP0988887B1 (fr)
DE (2) DE59807124D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1155733A1 (fr) * 2000-05-19 2001-11-21 Vakumix Rühr- und Homogenisiertechnik Aktiengesellschaft Homogénéisateur pour la production de produits coulables
US7325966B2 (en) 2003-05-09 2008-02-05 Ika-Werke Gmbh & Co. Kg Device for dispersion and/or homogenization
WO2008107493A1 (fr) * 2007-10-12 2008-09-12 S.P.C.M. Sa Installation destinée à la floculation d'une suspension épaisse chargée en matières en suspension et son procédé de fonctionnement
EP2529829A1 (fr) 2011-06-01 2012-12-05 Vakumix Rühr- und Homogenisiertechnik Aktiengesellschaft Rotor de dispersion pour l'homogénéisation de fluides pouvant s'écouler
JPWO2013027650A1 (ja) * 2011-08-19 2015-03-19 株式会社明治 微粒化装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20002920U1 (de) 2000-02-18 2000-04-20 Schröder & Boos Misch- und Anlagentechnik GmbH & Co. KG, 27578 Bremerhaven Homogenisator
DE102014116242A1 (de) * 2014-11-07 2016-05-12 Uts Biogastechnik Gmbh Rühreinrichtung für einen Fermenter einer Biogasanlage
WO2024100447A2 (fr) * 2022-11-07 2024-05-16 Frymakoruma Ag Homogénéisateur ainsi qu'installation de traitement sous vide et procédé l'utilisant

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB638966A (en) * 1948-07-21 1950-06-21 Raolo Benvenuto Giusti Improvements in or relating to mixing and homogenising apparatus
DE821200C (de) * 1948-10-02 1951-11-15 Hans Kotthoff Ruehrvorrichtung
DE1034149B (de) * 1955-05-07 1958-07-17 Hans Kotthoff Kreiselmischer mit einem fest angeordneten, das Schleuderrad konzentrisch umgebendenWiderstands-Elementenkranz
DE1040513B (de) * 1953-09-07 1958-10-09 Wilhelm Schmitz Misch- und Emulgiervorrichtung fuer Fluessigkeiten
US3285331A (en) * 1964-05-21 1966-11-15 Bratland Arthur Combined mixing and homogenising apparatus
DE2335773A1 (de) * 1972-07-13 1974-01-31 Silverson Machines Ltd Mischvorrichtung
EP0290033A1 (fr) * 1987-05-08 1988-11-09 A. BERENTS GMBH & CO. KG Homogénéisateur pour la production de produits liquides
EP0760254A1 (fr) * 1995-08-29 1997-03-05 Vakumix Rühr- und Homogenisiertechnik Aktiengesellschaft Dispositif pour l'homogénéisation de matériaux coulants

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB638966A (en) * 1948-07-21 1950-06-21 Raolo Benvenuto Giusti Improvements in or relating to mixing and homogenising apparatus
DE821200C (de) * 1948-10-02 1951-11-15 Hans Kotthoff Ruehrvorrichtung
DE1040513B (de) * 1953-09-07 1958-10-09 Wilhelm Schmitz Misch- und Emulgiervorrichtung fuer Fluessigkeiten
DE1034149B (de) * 1955-05-07 1958-07-17 Hans Kotthoff Kreiselmischer mit einem fest angeordneten, das Schleuderrad konzentrisch umgebendenWiderstands-Elementenkranz
US3285331A (en) * 1964-05-21 1966-11-15 Bratland Arthur Combined mixing and homogenising apparatus
DE2335773A1 (de) * 1972-07-13 1974-01-31 Silverson Machines Ltd Mischvorrichtung
EP0290033A1 (fr) * 1987-05-08 1988-11-09 A. BERENTS GMBH & CO. KG Homogénéisateur pour la production de produits liquides
EP0760254A1 (fr) * 1995-08-29 1997-03-05 Vakumix Rühr- und Homogenisiertechnik Aktiengesellschaft Dispositif pour l'homogénéisation de matériaux coulants

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1155733A1 (fr) * 2000-05-19 2001-11-21 Vakumix Rühr- und Homogenisiertechnik Aktiengesellschaft Homogénéisateur pour la production de produits coulables
US7325966B2 (en) 2003-05-09 2008-02-05 Ika-Werke Gmbh & Co. Kg Device for dispersion and/or homogenization
WO2008107493A1 (fr) * 2007-10-12 2008-09-12 S.P.C.M. Sa Installation destinée à la floculation d'une suspension épaisse chargée en matières en suspension et son procédé de fonctionnement
FR2922123A1 (fr) * 2007-10-12 2009-04-17 S P C M Sa Sa Installation pour la floculation de boues chargees de matieres en suspension, procede mettant en oeuvre l'installation
US8057684B2 (en) 2007-10-12 2011-11-15 S.P.C.M. Sa Installation for the flocculation of sludge loaded with suspended matter, method using the installation
EP2529829A1 (fr) 2011-06-01 2012-12-05 Vakumix Rühr- und Homogenisiertechnik Aktiengesellschaft Rotor de dispersion pour l'homogénéisation de fluides pouvant s'écouler
US9452396B2 (en) 2011-06-01 2016-09-27 Netzsch Vakumix Gmbh Rotor for homogenizing flowable media
JPWO2013027650A1 (ja) * 2011-08-19 2015-03-19 株式会社明治 微粒化装置
EP2745920A4 (fr) * 2011-08-19 2015-07-29 Meiji Co Ltd Dispositif d'atomisation
JP2018065128A (ja) * 2011-08-19 2018-04-26 株式会社明治 微粒化装置

Also Published As

Publication number Publication date
DE59807124D1 (de) 2003-03-13
DE29822149U1 (de) 1999-04-08
EP0988887B1 (fr) 2003-02-05

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