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EP0196575B1 - Dispositif pour mélanger au moins un milieu fluide - Google Patents

Dispositif pour mélanger au moins un milieu fluide Download PDF

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Publication number
EP0196575B1
EP0196575B1 EP86103912A EP86103912A EP0196575B1 EP 0196575 B1 EP0196575 B1 EP 0196575B1 EP 86103912 A EP86103912 A EP 86103912A EP 86103912 A EP86103912 A EP 86103912A EP 0196575 B1 EP0196575 B1 EP 0196575B1
Authority
EP
European Patent Office
Prior art keywords
impellers
pump
pump impellers
currents
fluid
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
EP86103912A
Other languages
German (de)
English (en)
Other versions
EP0196575A2 (fr
EP0196575A3 (en
Inventor
Angelo Cadeo
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.)
Tetra Pak Processing Equipment AG
Original Assignee
Miteco 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 Miteco AG filed Critical Miteco AG
Priority to AT86103912T priority Critical patent/ATE70203T1/de
Publication of EP0196575A2 publication Critical patent/EP0196575A2/fr
Publication of EP0196575A3 publication Critical patent/EP0196575A3/de
Application granted granted Critical
Publication of EP0196575B1 publication Critical patent/EP0196575B1/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
    • B01F27/40—Mixers with rotor-rotor system, e.g. with intermeshing teeth
    • B01F27/41—Mixers with rotor-rotor system, e.g. with intermeshing teeth with the mutually rotating surfaces facing each other
    • B01F27/412—Mixers with rotor-rotor system, e.g. with intermeshing teeth with the mutually rotating surfaces facing each other provided with ribs, ridges or grooves on one surface
    • 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
    • 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
    • B01F27/84—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with two or more stirrers rotating at different speeds or in opposite directions about the same axis

Definitions

  • the invention relates to a device for mixing at least one flow medium, wherein at least two partial flows of the flow medium are brought together to produce a very strongly turbulent flow.
  • Such a device is known from US Pat. No. 3,147,957 which has at least two pump impellers for the partial flows which are parallel and coaxial to one another, adjacent pump impellers being opposed, each pump impeller being assigned one of the partial flows.
  • the mixing of the flow media or media takes place within the device.
  • the mechanical shear action acts on the medium.
  • the impellers are provided with grooves or ribs and the impellers are made of hard metal (carborundum) in order to exert the greatest possible shear effects on, for example, the liquids to be mixed.
  • the effect of such a known device with two counter-rotating impellers is such that only the relative speed due to the two medium disks of opposite direction of rotation changes.
  • the aim is to create a device with which the aforementioned disadvantages can be avoided so that great turbulence can be achieved in an economical manner.
  • the pump impellers can be manufactured much cheaper since they are no longer subject to the abrasions mentioned. The shear effect on the media or media no longer has to be acted upon, in any case no special precautions have to be taken to achieve this.
  • the pump impellers are provided with forward-curved blades, so that they thereby become pure centrifugal impellers, which only have the task of converting the mechanical energy into hydraulic energy with the highest possible efficiency.
  • the two partial flows are only mixed outside the pump impellers in that large cross flows (transverse to the two flowing medium disks) and consequently large turbulences occur in a small ring outside the device.
  • the very high mixing effect is achieved by counteracting two cross flows with the high tangential velocity.
  • the two pump impellers with forward curved blades and opposite direction of rotation are necessary for this.
  • the tangential speed of the medium emerging from each pump impeller cannot have the same high value (at a given speed) since the tangential speed of the emerging medium is only of the same size like the peripheral speed of the pump impeller.
  • the two medium disks meet at their tangential speeds outside the device, so that the large transverse flows form, which result in very strong turbulence, which result in the at least one flow medium being mixed as intensively as possible.
  • Fig. 1 there are two pump impellers 1 and 2 which are parallel and coaxial to each other. Both pump impellers 1 and 2 rotate about one and the same axis 3, but in the opposite direction of rotation.
  • a first partial flow flows in the direction of the arrows 4 to the pump impeller 1, and a second partial flow flows in the direction of the arrows 5 to the second pump impeller 2.
  • the first partial flow emerges as a rotating medium disk 6 from the pump impeller 1, and the second partial flow likewise emerges as a rotating medium disk 7 from the pump impeller 2. Both media discs 6 and 7 rotate in opposite directions.
  • the two pump impellers 1 and 2 are expediently designed identically to one another and consequently, apart from the direction of rotation, have the same hydrodynamic characteristics.
  • the two oppositely rotating liquid disks 6 and 7 touch each other at point 8, the two opposite circumferential components of the two liquid disks meeting each other and canceling each other practically immediately.
  • the two liquid disks 6 and 7 have low radial speed components that determine the throughput of the pump impellers. Because of the sudden abolition of the mutually opposed tangential speed components, oscillating transverse movements of the liquid particles occur, which result in a very large amount of turbulence in the liquid region 9.
  • the two pump impellers 1 and 2 are shown somewhat more clearly.
  • the pump impeller 1 is supported by a hollow shaft 10, and the pump impeller 2 is seated on an inner shaft 11 which is surrounded by the hollow shaft 10.
  • the pump impeller 1 has a suction nozzle 12 for the partial flow 4
  • the pump impeller 2 has a suction nozzle 13 for the partial flow 5. Both pump impellers 1 and 2 rotate in opposite directions about the axis 3.
  • the two pump impellers 1 and 2 are driven by a single drive motor 14 for rotating in opposite directions.
  • the pump impeller 1 is seated on the hollow shaft 10 and the pump impeller 2 is carried by the inner shaft 11.
  • the drive motor 14 drives via a belt 15 on pinion 16 and 17.
  • the pinion 17 is rotatably connected to the inner shaft 11.
  • the pinion 16 is rotatably connected to a wheel 18 which meshes with a wheel 19 which is rotatably connected to the hollow shaft 10. In this way, the two shafts 10 and 11 are driven in opposite directions.
  • the two pump impellers 1 and 2 are driven in opposite directions by two drive motors 20 and 21.
  • the motor 20 drives directly on the inner shaft 11 on which the pump impeller 2 is seated, and the motor 21 drives via a belt 22 on a pulley 23 which is connected to the hollow shaft 10 in a rotationally fixed manner.
  • the two motors 20 and 21 have opposite directions of rotation.
  • the pump impeller 1 is seated on a shaft 24, and the pump impeller 2 is seated on a shaft 25.
  • the two coaxial drive shafts 24 and 25 of the two pump impellers 1 and 2 are thus on opposite sides of the pump impellers.
  • a motor 26 is used to drive the shaft 24 and thus the pump impeller 1
  • a motor 27 is used to drive the shaft 25 and thus the pump impeller 2.
  • An intake port 28 leads to the pump impeller 1 and an intake port 29 leads to the pump impeller 2 merged flow media flow away via a nozzle 30.
  • pump impellers 1 and 2 are designed as centrifugal impellers with forward curved blades, so that the peripheral component of the speed of the emerging medium disks 6 and 7 is very strong has been increased.
  • the circumferential component of the speed (tangential speed) of the two medium disks 6 and 7 can be set correspondingly large by appropriate speed of the pump impellers 1 and 2.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Paper (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Claims (2)

  1. Dispositif pour mélanger intimement au moins un fluide, au moins deux courants partiels (4,5) de celui-ci se rejoignant pour former un courant (9) fortement turbulent, avec au moins deux turbines (1,2) mutuellement parallèles et coaxiales pour les courants partiels (4,5), les turbines (1,2) voisines tournant à contresens l'une de l'autre et un des courants partiels étant associé à chaque turbine, caractérisé en ce que les turbines (1,2) sont des turbines centrifuges avec des aubes courbées vers l'avant, de manière à ce que les courants partiels (4,5) quittent les turbines centrifuges sous forme de disques fluides (6,7) de façon à ce que les disques fluides voisins (6,7) entrent en collision à un endroit (8) situé à l'extérieur des turbines centrifuges pour former un courant fortement turbulent en une région (9) située à l'extérieur des turbines centrifuges.
  2. Dispositif selon la revendication 1, caractérisé en ce que les turbines voisines (1,2) sont identiques en ce qui concerne le débit et la vitesse périphérique des disques fluides (6,7) rotatifs à la sortie des turbines.
EP86103912A 1985-04-03 1986-03-21 Dispositif pour mélanger au moins un milieu fluide Expired - Lifetime EP0196575B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86103912T ATE70203T1 (de) 1985-04-03 1986-03-21 Vorrichtung zum durchmischen von zumindest einem stroemungsmedium.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1453/85 1985-04-03
CH1453/85A CH665959A5 (de) 1985-04-03 1985-04-03 Vorrichtung zum durchmischen von zumindest einem stroemungsmedium.

Publications (3)

Publication Number Publication Date
EP0196575A2 EP0196575A2 (fr) 1986-10-08
EP0196575A3 EP0196575A3 (en) 1988-11-30
EP0196575B1 true EP0196575B1 (fr) 1991-12-11

Family

ID=4210820

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86103912A Expired - Lifetime EP0196575B1 (fr) 1985-04-03 1986-03-21 Dispositif pour mélanger au moins un milieu fluide

Country Status (6)

Country Link
US (1) US4786183A (fr)
EP (1) EP0196575B1 (fr)
JP (1) JPH0790160B2 (fr)
AT (1) ATE70203T1 (fr)
CH (1) CH665959A5 (fr)
DE (1) DE3682799D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6607783B1 (en) 2000-08-24 2003-08-19 Kimberly-Clark Worldwide, Inc. Method of applying a foam composition onto a tissue and tissue products formed therefrom

Families Citing this family (4)

* 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
WO2015032008A1 (fr) 2013-09-06 2015-03-12 Miteco Ag Dispositif pour mélanger et/ou homogénéiser au moins un produit liquide
JP2015066503A (ja) * 2013-09-30 2015-04-13 大日本印刷株式会社 撹拌装置および撹拌方法
KR101780329B1 (ko) * 2015-05-06 2017-09-20 주식회사 케이엔에스컴퍼니 로터-로터 방식 분산유화장치 임펠러 구조 시스템

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR744390A (fr) * 1933-04-19
GB1051539A (fr) * 1900-01-01
GB205672A (en) * 1922-10-11 1923-10-25 Edgar Allison Burrows Improvements in the means for and method of mixing the ingredients used in the manufacture of soap, in a mixing pan
DE648783C (de) * 1934-09-02 1937-08-09 Johann Aebi Farbmischmaschine
FR950579A (fr) * 1947-07-23 1949-09-30 Separation Sa Franc Pour La Perfectionnements aux procédés, dispositifs et installations mettant en jeu des opérations de pulvérisation et d'atomisation
CH341478A (de) * 1955-08-12 1959-10-15 Peter Prof Willems Knet- und Mischwerk
US3147957A (en) * 1960-05-31 1964-09-08 W J Cooper Liquid mixing device
DE1454743B2 (de) * 1962-06-07 1970-05-14 Beck, Erich, 6520 Worms Verfahren und Vorrichtung zum Verdichten und Agglomerieren von pulverförmigen bis körnigen thermoplastischen Stoffen
FR1404962A (fr) * 1963-08-22 1965-07-02 Appareil de dosage et de mélange pour fluides
US3252690A (en) * 1964-06-15 1966-05-24 Warner J Cooper Liquid mixing device
JPS4836764A (fr) * 1971-09-16 1973-05-30
US3942766A (en) * 1974-03-08 1976-03-09 Lage James R Process and arrangement for producing a strong turbulence in at least one fluid or quasi-fluid medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6607783B1 (en) 2000-08-24 2003-08-19 Kimberly-Clark Worldwide, Inc. Method of applying a foam composition onto a tissue and tissue products formed therefrom

Also Published As

Publication number Publication date
DE3682799D1 (de) 1992-01-23
EP0196575A2 (fr) 1986-10-08
CH665959A5 (de) 1988-06-30
JPS61230726A (ja) 1986-10-15
US4786183A (en) 1988-11-22
JPH0790160B2 (ja) 1995-10-04
EP0196575A3 (en) 1988-11-30
ATE70203T1 (de) 1991-12-15

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