EP0201767B1 - Mélangeur cyclone à mélange continu de matières pulvérulentes avec des liquides - Google Patents

Mélangeur cyclone à mélange continu de matières pulvérulentes avec des liquides Download PDF

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Publication number
EP0201767B1
EP0201767B1 EP86105547A EP86105547A EP0201767B1 EP 0201767 B1 EP0201767 B1 EP 0201767B1 EP 86105547 A EP86105547 A EP 86105547A EP 86105547 A EP86105547 A EP 86105547A EP 0201767 B1 EP0201767 B1 EP 0201767B1
Authority
EP
European Patent Office
Prior art keywords
pump impeller
baffle
mixing chamber
lamellas
ring
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
EP86105547A
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German (de)
English (en)
Other versions
EP0201767A2 (fr
EP0201767A3 (en
Inventor
Roland Dr. Karg
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.)
Ytron Dr Karg GmbH
Original Assignee
Ytron Dr Karg 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 Ytron Dr Karg GmbH filed Critical Ytron Dr Karg GmbH
Priority to AT86105547T priority Critical patent/ATE64691T1/de
Publication of EP0201767A2 publication Critical patent/EP0201767A2/fr
Publication of EP0201767A3 publication Critical patent/EP0201767A3/de
Application granted granted Critical
Publication of EP0201767B1 publication Critical patent/EP0201767B1/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
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/60—Pump mixers, i.e. mixing within a pump
    • B01F25/64—Pump mixers, i.e. mixing within a pump of the centrifugal-pump type, i.e. turbo-mixers
    • B01F25/642—Pump mixers, i.e. mixing within a pump of the centrifugal-pump type, i.e. turbo-mixers consisting of a stator-rotor system with intermeshing teeth or cages

Definitions

  • the invention relates to a cyclone mixing device for the continuous mixing of powdery substances with liquids, with a feed device for powdery substances and with a mixing chamber arranged below the feed device, in the upper area of which a tangential suction pipe for liquids is provided and in the lower one
  • a pump wheel is arranged in the area with a dispersing device surrounding it, a centrifugal flow to be generated with the pump wheel, which is conducted in its lower area through the dispersing device and is carried out through an outlet arranged in the lower area of the mixing chamber from the mixing chamber.
  • a dispersing device in which the problem substances are processed in batches.
  • this device in which the shear forces required for dispersion are generated by a toothed ring, it is disadvantageous that a manageable sequence of passages of the powdery substance is not achieved by the dispersing unit.
  • other powder fractions are not or only less often passed through the dispersing head, so that they are not or too little be unlocked in order to be effective. With this device, it is not possible to achieve exactly repeatable results.
  • a device is also known in which thickeners and / or stabilizers which are difficult to digest are mixed more or less well with the liquid discontinuously in a mixer.
  • the inadequately wetted dry product is then colloidally digested and deagglomerated in an in-line disperser.
  • the dispersing device a sufficiently well dispersed end product is achieved, but the batch as a whole is not sufficiently homogeneous since the continuous device is fed with lumps and agglomerates. As a result, the concentration of the dispersed end product is also non-uniform. In order to achieve a sufficiently homogeneous batch, the dispersion process must necessarily be repeated.
  • the batch must be sent in a circuit over a container with a jet mixer (for even suspension).
  • a jet mixer for even suspension
  • the risk of the solution being overused due to the repeated circulation of the product is significantly reduced.
  • a mixing device is also known for thickeners, in which the dry products are sucked into the liquid via an injector.
  • This device has its own Limit of applicability when powder that is not easily flowable is to be used or when high concentrations are required.
  • an injector can at most ensure that primary particle agglomerates are wetted. Colloidal disruption of every single particle is not possible.
  • a further mixing device dry substances are metered from a feed device into a dissolving chamber.
  • the dry products are forcibly combined with the liquid, which is also regulated in quantity.
  • the DE-PS 12 33 365 shows a device for mixing or homogenizing solid, liquid and gaseous substances, which has a housing with axial, conically narrowing in the suction inlet port with radial guide vanes and a centrifugal wheel with centrifugal blades curved counter to the direction of rotation.
  • a fixed deflection ring with deflection channels is arranged between the centrifugal wheel and the outlet annular space.
  • the centrifugal wheel has a ring connected to the centrifugal wheel blades, which has inclined or curved acceleration channels, the deflecting channels of the deflecting ring being arranged so as to be inclined or curved in the opposite direction to the acceleration channels.
  • This known device is a device which is supplied with liquid-powder mixture which has already been prepared, and which is then pumped and homogenized again through the device.
  • the disadvantage of the device is that it first requires the preparation of the liquid-powder mixture and therefore a separate supply of liquid and powdered products is not possible.
  • the known device has extremely complicated components and thus a complicated structure.
  • DE-PS 967 436 shows a rotary mixer to improve the mixing and homogenizing effect of paints and resins.
  • the rotary mixer has an annular disk-shaped carrier fixedly arranged in the treatment tank for a resistor element ring switched into the mixed material flow, in which a mixed rotor is accommodated.
  • a mixed rotor is accommodated.
  • it is designed as a centrifugal pump rotor with two cover rings which delimit the blade area on both end faces and which have connecting spokes to the rotor hub.
  • the invention has for its object to provide a cyclone mixing device of the type mentioned which, despite the oppositely influencing parameters, high degree of dispersion on the one hand and high throughput on the other hand, provides a qualitatively very good and quantitatively very high power yield and is extremely simple is constructed. Furthermore, a continuous throughput is to be achieved with the mixing device.
  • the dispersing device of the cyclone mixing device is designed as a lamellar ring which is fixed relative to the pump wheel and which has baffle lamellae distributed uniformly over the circumference, which extend essentially radially outward and their inner end sections the radially outer boundary of the pump wheel are arranged immediately adjacent and that the radially inner portions of the baffle plates are arranged at a higher level than the radially outer ones.
  • the dispersing device of the cyclone mixing device is designed as a lamellar ring which is fixed relative to the pump wheel and which has baffle lamellae which are distributed uniformly over the circumference and extend essentially radially outward and their inner end sections the radially outer boundary of the pump wheel are arranged immediately adjacent and that the fin ring is followed by a further pump wheel arranged below and coaxially to the pump wheel.
  • baffle plates are preferably flat.
  • the dry products thrown out of the area of the pump wheel, which have not yet been sufficiently dispersed, are thrown against an inner wall of one lamella or repeatedly against the inner walls of two adjacent lamellas, so that an agglomerate is broken up and can be adequately wetted.
  • the lamellar ring and the pump wheel are arranged essentially at the same height.
  • the height between the lamellar ring and the pump wheel can be varied.
  • the base ring of the lamellar ring, on which the baffle lamellas are attached is arranged lower than the pump wheel. This embodiment can bring an additional dispersion effect in that the centrifugal flow from the pump wheel arranged higher must flow down over a kind of step onto the lower ring of the lamellar ring.
  • baffle plates according to the invention are aligned essentially in the radial direction and since the volume flow flowing out between the baffle plates emerges essentially in the radial direction from the lamella ring, it is advantageous for reasons of fluid mechanics to use the baffle plates, which are the outlet Adjacent from the mixing chamber are to be aligned essentially in the same direction as the outlet.
  • the cyclone mixing device 1 has a feed device 3 through which the powdery Dry product is introduced into the mixing chamber 5 provided below the feed device.
  • an intake pipe 7 opening tangentially into the mixing chamber is provided in the upper region of the mixing chamber 5.
  • the pump wheel 9 In the lower part of the mixing chamber 5 is the pump wheel 9, which is surrounded by the dispersing device designed as a lamellar ring 11.
  • the pump wheel 9 is arranged essentially at the same height as the lamella ring 11, so that the centrifugal flow from the pump wheel 9 can flow through the lamella ring 11 essentially horizontally through the channels formed by the baffle plates 13. After exiting the plate ring 11, the solution is discharged from the mixing chamber through a common outlet 15.
  • the lamellar ring 11 is fastened to the wall of the mixing chamber and is thus arranged in a fixed manner with respect to the pump wheel 9.
  • the lamellar ring 11 is exchangeable like the pump wheel 9.
  • Fig. 2 the concentric arrangement of the plate ring 11 and the pump wheel 9 in the mixing chamber 5 is drawn out on an enlarged scale.
  • the pump wheel 9 rotates counterclockwise as shown by arrow 17.
  • the centrifugal flow located in the lower region of the mixing chamber 5 is pressed outwards by the spirally arranged vanes 19 of the pump wheel 9 into the fixed lamellar ring 11.
  • the particles in the flow, which have not yet been dispersed hit the impingement lamellae 13 and are split there.
  • the dispersed solution is brought together on the outer circumference of the lamellar ring and discharged through the outlet 15.
  • baffle lamellae 13 are evenly distributed over the circumference of the lamella ring 11 and that they extend outward in a substantially radial direction.
  • the inner end sections of the baffle plates are arranged immediately adjacent to the radially outer boundary of the pump wheel 9. This illustration also shows that the baffle plates 13 are flat. Through the outlet nozzle 15, the dispersed solution is carried out in the tangential direction from the mixing chamber 5.
  • Fig. 3 two mutually different paths are shown, on which particles thrown out of the pump wheel 9 are guided through the lamellar ring, split up during the passage and then carried out.
  • a still agglomerated particle in accordance with the path 21 strikes the impact lamella 13, is split there and then continues on the path 21 out of the lamella ring 11.
  • the path 23 it is also possible that particles , which are expressed in a somewhat more tangential direction from the impeller 9, hit the walls of two adjacent baffle plates 13 several times. In this case too, despite the multiple dispersing action, a very good overall throughput is still ensured by the lamellar ring.
  • the effect of the dispersion can also be influenced by varying the mutual distance between the two adjacent baffle plates 13. According to FIG. 3, this distance is chosen to be smaller than the radial extent of the adjacent baffle plates 13. This ensures that thrown out of the pump wheel 9 Particles must hit a baffle plate at least once.
  • a special arrangement of the lamellar ring 11 to the pump wheel 9 is shown insofar as the impact lamellae 13 of the lamellar ring 11 extend beyond the pump wheel base disk 27 in the area adjacent to the pump wheel 9.
  • the vertical extent of the baffle plates 13 and the wing 19 of the pump wheel 9 are approximately the same size.
  • the base ring 25 of the lamellar ring 11 is located approximately at the same height as the impeller base disk 27.
  • baffle plates 13 overlap the outer end portion of the impeller base plate 27, a continuous transition of the flow from the impeller 9 to the plate ring 11 is ensured.
  • a further cyclone mixing device is shown in the purely schematic longitudinal section of FIG. 5. It differs from the mixing device shown in the previous figures in that a further pump wheel 28 is connected downstream of the lamellar ring 13. It lies under the pump wheel 9, which is illustrated in particular in FIG. 2, and is arranged coaxially to the latter. In the example shown here, the two pump wheels 9 and 28 are connected to one another in a rotationally fixed manner.
  • the dispersed solution After the dispersed solution has passed through the lamellar ring 13, it passes over a annular recess 29 of the mixing chamber 5 on the outer circumference of the baffle plates 13 and then via an annular feed 30 from above onto the further pump wheel 28.
  • the further pump wheel 28 leads the solution to the outside via a tangential outlet nozzle 15 '.
  • FIGS. 6 and 7. An embodiment of the further pump wheel 28 is shown by way of example in FIGS. 6 and 7. It differs essentially from the pump wheel 9 described above by the configuration of the vanes 19 ′ which are arranged on the base disk 27. Accordingly, the wings initially rise steeply in their course from the inner region to the outer edge of the base plate 27, and then fall off slightly.
  • the pump wheel 9 can also be designed in the manner shown.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Cyclones (AREA)

Claims (10)

  1. Dispositif mélangeur de type cyclone (1) pour mélanger en continu des matières pulvérulentes et des liquides, comportant un dispositif d'alimentation (3) pour la matière pulvérulente, dispositif (3) sous lequel se trouve une chambre de mélange (5) dont la zone supérieure est munie d'une tubulure d'aspiration (7), tangentielle, pour les liquides, et dont la zone inférieure est munie d'un rotor de pompe (9) avec un dispositif de dispersion entourant ce rotor (9) qui crée un écoulement centrifuge traversant la partie inférieure de l'installation de dispersion et la chambre de mélange (5) est munie d'une sortie dans sa partie inférieure, caractérisé en ce que l'installation de dispersion est réalisée sous la forme d'une couronne de lamelles (11) fixes par rapport au rotor de pompe (9), couronne qui comporte des lamelles brise-jet (13) réparties régulièrement à la périphérie, ces lamelles s'étendant essentiellement dans la direction radiale, vers l'extérieur et dont les segments d'extrémité du côté intérieur étant directement voisins de la limite radiale extérieure du rotor de pompe et les segments des lamelles brise-jet (13) situés radialement plus à l'intérieur se trouvent à un niveau plus élevé que les segments situés radialement plus à l'extérieur.
  2. Dispositif mélangeur de type cyclone (1) pour mélanger en continu des matières pulvérulentes avec des liquides, comportant un dispositif d'alimentation (3) pour la matière pulvérulente et une chambre de mélange (5) en-dessous du dispositif d'alimentation (3), chambre dont la zone supérieure est munie d'une tubulure d'aspiration (7) tangentielle pour les liquides et dont la zone inférieure est équipée d'un rotor de pompe (9) avec une installation de dispersion entourant le rotor (9) qui crée un écoulement centrifuge dont la partie inférieure traverse l'installation de dispersion, la chambre de mélange (5) comportant en partie inférieure une sortie, caractérisé en ce que l'installation de dispersion est constituée par une couronne de lamelles (11) fixes par rapport au rotor de la pompe (9), couronne qui se compose de lamelles brise-jet (13) réparties régulièrement à la périphérie et qui sont dirigées principalement dans la direction radiale, vers l'extérieur et dont les segments d'entrée, situés vers l'intérieur, sont directement voisins de la limite radiale extérieure du rotor de la pompe, et un autre rotor de pompe (28) est prévu sous la couronne de lamelles (11), en-dessous du rotor de pompe précédente, (9), et coaxialement à celui-ci.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les lamelles brise-jet (13) sont planes.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que les lamelles brise-jet (13) peuvent être pivotées suivant un angle aigu (α) par rapport à la direction radiale.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que les lamelles brise-jet (13) sont fixées dans la zone voisine du rotor de pompe (9), au-dessus du disque de base (27) du rotor, disque sur lequel sont fixées les pales (19) du rotor (9).
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que la couronne de lamelles (11) et le rotor de pompe (9) sont situés pratiquement à même hauteur.
  7. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que la couronne de lamelles (11) présente une hauteur plus grande que le rotor de pompe (9).
  8. Dispositif selon la revendication 7, caractérisé en ce que la couronne de base (25) de la couronne de lamelles (11) sur laquelle (25) sont fixées les lamelles (13) est située à un niveau plus bas que le rotor de pompe (9).
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que les lamelles brise-jet (13) voisines de la sortie (15) de la chambre de mélange (5) sont alignées principalement dans la même direction que la sortie (15).
  10. Dispositif selon l'une des revendications 1 à 9, caractérisé en ce que la distance séparant deux lamelles brise-jet (13) voisines est inférieure à leur longueur radiale.
EP86105547A 1985-05-17 1986-04-22 Mélangeur cyclone à mélange continu de matières pulvérulentes avec des liquides Expired - Lifetime EP0201767B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86105547T ATE64691T1 (de) 1985-05-17 1986-04-22 Zyklon-mischvorrichtung zum kontinuierlichen mischen von pulverigen stoffen mit fluessigkeiten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853517879 DE3517879A1 (de) 1985-05-17 1985-05-17 Zyklon-mischvorrichtung zum kontinuierlichen mischen von pulverigen stoffen mit fluessigkeiten
DE3517879 1985-05-17

Publications (3)

Publication Number Publication Date
EP0201767A2 EP0201767A2 (fr) 1986-11-20
EP0201767A3 EP0201767A3 (en) 1987-12-23
EP0201767B1 true EP0201767B1 (fr) 1991-06-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105547A Expired - Lifetime EP0201767B1 (fr) 1985-05-17 1986-04-22 Mélangeur cyclone à mélange continu de matières pulvérulentes avec des liquides

Country Status (4)

Country Link
US (1) US4729663A (fr)
EP (1) EP0201767B1 (fr)
AT (1) ATE64691T1 (fr)
DE (2) DE3517879A1 (fr)

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DE3715331A1 (de) * 1987-05-08 1988-12-01 Berents Gmbh & Co Kg A Homogenisator fuer die herstellung fliessfaehiger produkte
DE3717058A1 (de) * 1987-05-21 1988-12-08 Bayer Ag Mischer zum vermischen mindestens zweier fliessfaehiger stoffe, insbesondere unter durchfuehrung bzw. einleitung einer reaktion waehrend der vermischung
CA2100873A1 (fr) * 1991-05-28 1992-11-29 Terrance Bruce Mazer Dispositif pour melanger une poudre dans un liquide
US5326165A (en) * 1991-06-26 1994-07-05 Irvine Scientific Sales Co. Mixing apparatus
DE4137179C2 (de) * 1991-11-12 1997-02-27 Hdc Ag Vorrichtung zum Erzeugen einer Wasser-in-Öl Emulsion und Verwendung der Vorrichtung an einem Dieselmotor
WO1994022566A1 (fr) * 1993-04-02 1994-10-13 Irvine Scientific Sales Co. Appareil de dissolution
US6254267B1 (en) * 1997-11-06 2001-07-03 Hydrotreat, Inc. Method and apparatus for mixing dry powder into liquids
DE19812407A1 (de) * 1998-03-20 1999-09-23 Michael Marmetschke Verfahren und Vorrichtung zur Herstellung von Imprägniermitteln
US6200937B1 (en) 1998-06-09 2001-03-13 Neutrogena Corporation Anti-residue shampoo and liquid toiletry production method
AU1114200A (en) 1998-10-14 2000-05-01 Delsys Pharmaceutical Corporation Device for dispersal of fluidized powder
US7464835B2 (en) 2002-12-19 2008-12-16 Braun Gmbh Preparing and dispensing mixed beverages
DE10260040A1 (de) * 2002-12-19 2004-07-15 Braun Gmbh Mischeinrichtung
US20080175094A1 (en) * 2007-01-19 2008-07-24 Bryan Henry Solid Charging System
US20140262338A1 (en) * 2013-03-15 2014-09-18 Schlumberger Technology Corporation Blender system with multiple stage pumps
PL231194B1 (pl) * 2014-08-01 2019-01-31 Profarb Grupa Chemiczna Spolka Z Ograniczona Odpowiedzialnoscia Dyspergator przepływowy

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Also Published As

Publication number Publication date
US4729663A (en) 1988-03-08
DE3517879C2 (fr) 1990-02-22
DE3517879A1 (de) 1986-11-20
EP0201767A2 (fr) 1986-11-20
EP0201767A3 (en) 1987-12-23
ATE64691T1 (de) 1991-07-15
DE3679935D1 (de) 1991-08-01

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