EP0263996A2 - Mixing hopper - Google Patents

Mixing hopper Download PDF

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Publication number
EP0263996A2
EP0263996A2 EP87113684A EP87113684A EP0263996A2 EP 0263996 A2 EP0263996 A2 EP 0263996A2 EP 87113684 A EP87113684 A EP 87113684A EP 87113684 A EP87113684 A EP 87113684A EP 0263996 A2 EP0263996 A2 EP 0263996A2
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EP
European Patent Office
Prior art keywords
funnel
mixing
neck
hopper part
edges
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
EP87113684A
Other languages
German (de)
French (fr)
Other versions
EP0263996B1 (en
EP0263996A3 (en
Inventor
Jan Drijver
Andries Dr. Jelsma
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.)
Hoechst AG
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Hoechst 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
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Publication of EP0263996A2 publication Critical patent/EP0263996A2/en
Publication of EP0263996A3 publication Critical patent/EP0263996A3/en
Application granted granted Critical
Publication of EP0263996B1 publication Critical patent/EP0263996B1/en
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
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B01F23/56—Mixing liquids with solids by introducing solids in liquids, e.g. dispersing or dissolving
    • 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
    • B01F25/10—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components
    • 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
    • B01F25/80—Falling particle mixers, e.g. with repeated agitation along a vertical axis
    • B01F25/85—Falling particle mixers, e.g. with repeated agitation along a vertical axis wherein the particles fall onto a film that flows along the inner wall of a mixer
    • 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
    • B01F2025/91—Direction of flow or arrangement of feed and discharge openings
    • B01F2025/913—Vortex flow, i.e. flow spiraling in a tangential direction and moving in an axial direction

Definitions

  • the present invention relates to a mixing funnel which consists of an upper funnel part and a funnel neck.
  • a number of apparatuses are known for mixing powders with liquids.
  • a mixing funnel consisting of an upper funnel part and a funnel neck in that the upper funnel part is constructed from a trapezoidal, spaced-apart outer funnel upper part and inner funnel upper part with formation of an annular space, the distance between the outer funnel upper part and the inner one Upper part of the funnel is closed near the upper edges; that the funnel neck is tightly connected to the lower edge of the outer funnel upper part and that the outer funnel upper part is penetrated in its upper region by an inlet pipe for the tangential application of liquid.
  • the inner upper part of the funnel remains completely dry in that the liquid emerging from the annular gap between the lower edges of the inner and outer upper part of the funnel is deflected directly downward onto the inner wall of the funnel neck.
  • the downward rotating movement of the liquid on the inner wall of the funnel neck forces the powder-air mixture fed through the inner funnel top in the same direction.
  • the mixing funnel As a result of the air flow directed downwards, the vapors emerging from the liquid surface below the mixing funnel are prevented from rising into the inner upper part of the funnel, so that in this area no powder ver crusts occur.
  • the mixing funnel 2 located above a liquid surface 1 consists of an outer funnel upper part 3 and an inner funnel upper part 4, the upper edges of the two trapezoidal funnel upper parts (3, 4) being aligned and being connected to one another in a tightly closed manner by an annular ring 5.
  • An annular space 6 is formed by the outer upper funnel part 3, the inner upper funnel part 4 and the circular ring 5.
  • the upper upper part of the outer funnel 3 is penetrated by an inlet tube 7 through which the annular space 6 can be acted upon by liquid.
  • a cylindrical funnel neck 8 is tightly connected to the lower edge of the outer funnel top 3.
  • the connection between the funnel neck 8, the diameter of which is smaller than the circumference of the lower region of the outer funnel upper part 3, and the outer funnel upper part 3 is achieved by a rounding 9.
  • the annular space 6 has at its lower end an annular gap 13 which is formed between the lower edge of the inner upper funnel part 4 and the rounding 9.
  • the operation of the mixing funnel 2 is as follows: When the liquid flows out of the annular gap 13 formed between the inner upper part 4 of the funnel and the rounding 9, a vacuum is created, through which the emerging liquid ring 10 is bent downwards and pressed against the inner wall of the funnel neck 8.
  • the rounding 9 is bent in such a way that its tangent in the region of the annular gap 13 forms an angle ⁇ of 25 to 35 ° with the inner surface of the bent liquid ring 10 or with the funnel neck 8 parallel to it. Due to the tangential entry of the liquid into the annular space 6, the liquid ring 10 also has a rotational movement; the liquid thus rotates downwards. Powder is applied to the inner upper part 4 of the funnel from above along the arrows 11.
  • the falling powder-air mixture is captured and wetted by the rotating liquid moving downwards.
  • a hollow cone 12 is formed which extends down to the liquid surface 1 and thereby prevents the non-wetted powder from escaping.
  • the mixing funnel according to the invention can be used to dissolve fine-grained salts, for example alkali metal triphosphates, in water while avoiding dust losses or to introduce a solid into a liquid with the result of a chemical reaction with a positive heat effect, for example for introducing burnt lime in wet process phosphoric acid to form calcium sulfate. be used.
  • fine-grained salts for example alkali metal triphosphates

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

The hopper consists of an upper hopper part and a hopper neck (8). The upper hopper part is constructed in each case from a trapezoidal outer upper hopper part (3) and an inner upper hopper part (4) spaced apart to form an annular space (6). The gap between the outer upper hopper part (3) and the inner upper hopper part (4) is closed near to their upper edges. The hopper neck (8) is joined, making a seal, to the lower edge of the outer upper hopper part (3). Finally, an inlet pipe (7) for tangential charging with liquid penetrates the outer upper hopper part (3) in its upper region.

Description

Die vorliegende Erfindung betrifft einen Mischtrichter, welcher aus einem Trichteroberteil und einem Trichterhals besteht.The present invention relates to a mixing funnel which consists of an upper funnel part and a funnel neck.

Zum Mischen von Pulvern mit Flüssigkeiten sind eine Reihe von Apparaten bekannt.A number of apparatuses are known for mixing powders with liquids.

Nachteilig ist bei diesen Apparaten, daß sie konstruktiv aufwendig und bei ihrem Betrieb infolge ihres komplexen Aufbaus störanfällig sind.The disadvantage of these devices is that they are structurally complex and prone to failure in their operation due to their complex structure.

Es ist daher Aufgabe der vorliegenden Erfindung, eine Mischeinrichtung für Flüssigkeiten und Pulver anzugeben, welche bei einfacher Konstruktion kontinuierlich und störungsfrei betreibbar ist. Das wird mit einem aus einem Trichteroberteil und einem Trichterhals bestehenden Misch­trichter erfindungsgemäß dadurch erreicht, daß das Trich­teroberteil aus je einem trapezförmigen, mit Abstand von­einander angeordneten äußeren Trichteroberteil und inneren Trichteroberteil unter Ausbildung eines Ringraumes aufge­baut ist, wobei der Abstand zwischen dem äußeren Trichter­oberteil und dem inneren Trichteroberteil nahe deren Ober­kanten verschlossen ist; daß der Trichterhals mit der Un­terkante des äußeren Trichteroberteiles dichtschließend verbunden ist und daß das äußere Trichteroberteil in sei­nem oberen Bereich von einem Eintrittsrohr zur tangentialen Beaufschlagung mit Flüssigkeit durchdrungen ist.It is therefore an object of the present invention to provide a mixing device for liquids and powders which can be operated continuously and without problems with a simple construction. This is achieved according to the invention with a mixing funnel consisting of an upper funnel part and a funnel neck in that the upper funnel part is constructed from a trapezoidal, spaced-apart outer funnel upper part and inner funnel upper part with formation of an annular space, the distance between the outer funnel upper part and the inner one Upper part of the funnel is closed near the upper edges; that the funnel neck is tightly connected to the lower edge of the outer funnel upper part and that the outer funnel upper part is penetrated in its upper region by an inlet pipe for the tangential application of liquid.

Der Mischtrichter gemäß der Erfindung kann wahlweise auch noch dadurch weitergebildet sein, daß

  • a) die Oberkanten des äußeren Trichteroberteiles und des inneren Trichteroberteiles durch einen Kreis­ring dichtschließend miteinander verbunden sind;
  • b) die Oberkanten des äußeren Trichteroberteiles und des inneren Trichteroberteiles fluchten;
  • c) die Verbindung zwischen dem Trichterhals und der Unterkante des äußeren Trichteroberteiles durch eine Abrundung unter Ausbildung eines Ringspaltes vorgenommen ist;
  • d) die Abrundung derart gebogen ist, daß ihre Tangente im Bereich des Ringspaltes und der Trich­terhals einen Winkel α von 25 bis 25°, vorzugswei­se von 29 bis 31°, einschließen;
  • e) der Ringspalt 1 bis 2,5 mm breit ist;
  • f) die Durchmesser des äußeren Trichteroberteiles und des inneren Trichteroberteiles im Bereich ihrer Unterkanten größer sind als der Durchmesser des Trichterhalses.
The mixing funnel according to the invention can optionally also be further developed in that
  • a) the upper edges of the outer upper part of the funnel and the inner upper part of the funnel are tightly connected to one another by a circular ring;
  • b) align the upper edges of the outer funnel top and the inner funnel top;
  • c) the connection between the funnel neck and the lower edge of the outer upper funnel part is made by rounding to form an annular gap;
  • d) the rounding is bent such that its tangent in the region of the annular gap and the funnel neck enclose an angle α of 25 to 25 °, preferably 29 to 31 °;
  • e) the annular gap is 1 to 2.5 mm wide;
  • f) the diameter of the outer upper part of the funnel and the inner upper part of the funnel in the region of their lower edges are larger than the diameter of the funnel neck.

Beim erfindungsgemäßen Mischtrichter bleibt das innere Trichteroberteil dadurch vollkommen trocken, daß die aus dem Ringspalt zwischen den Unterkanten von innerem bzw. äußerem Trichteroberteil austretende Flüssigkeit unmittel­bar nach unten auf die Innenwand des Trichterhalses abge­lenkt wird.In the mixing funnel according to the invention, the inner upper part of the funnel remains completely dry in that the liquid emerging from the annular gap between the lower edges of the inner and outer upper part of the funnel is deflected directly downward onto the inner wall of the funnel neck.

Beim Mischtrichter gemäß der Erfindung wird durch die an der Innenwand des Trichterhalses rotierend nach unten ge­richtete Bewegung der Flüssigkeit das durch das innere Trichteroberteil zugeführte Pulver-Luft-Gemisch in die gleiche Richtung gezwungen.In the mixing funnel according to the invention, the downward rotating movement of the liquid on the inner wall of the funnel neck forces the powder-air mixture fed through the inner funnel top in the same direction.

Beim erfindungsgemäßen Mischtrichter wird infolge des nach unten gerichteten Luftstromes ein Aufsteigen der aus der Flüssigkeitsoberfläche unterhalb des Mischtrichters aus­tretenden Brüden in das innere Trichteroberteil verhin­dert, so daß auch in diesem Bereich keine Pulverver­ krustungen auftreten.In the mixing funnel according to the invention, as a result of the air flow directed downwards, the vapors emerging from the liquid surface below the mixing funnel are prevented from rising into the inner upper part of the funnel, so that in this area no powder ver crusts occur.

Beim Mischtrichter gemäß der Erfindung treten aus dem Ringspalt 5 bis 20 m³/h Flüssigkeit bei einem Vordruck der Flüssigkeit von 2 bis 7 bar aus.In the mixing funnel according to the invention, 5 to 20 m³ / h of liquid emerge from the annular gap at a liquid pre-pressure of 2 to 7 bar.

In der beigefügten Zeichnung ist ein Ausführungsbeispiel des Gegenstandes der Erfindung schematisch und im Schnitt dargestellt.In the accompanying drawing, an embodiment of the object of the invention is shown schematically and in section.

Der oberhalb einer Flüssigkeitsoberfläche 1 befindliche Mischtrichter 2 besteht aus einem äußeren Trichteroberteil 3 und einem inneren Trichteroberteil 4, wobei die Oberkan­ten der beiden trapezförmigen Trichteroberteile (3, 4) fluchten und durch einen Kreisring 5 dichtschließend mit­einander verbunden sind. Durch das äußere Trichteroberteil 3, das innere Trichteroberteil 4 und den Kreisring 5 wird ein Ringraum 6 gebildet. Das äußere Trichteroberteil 3 ist in seinem oberen Bereich von einem Eintrittsrohr 7 durch­drungen, durch welches der Ringraum 6 mit Flüssigkeit be­aufschlagbar ist.
Ein zylindrischer Trichterhals 8 ist mit der Unterkante des äußeren Trichteroberteiles 3 dichtschließend verbun­den. Dabei wird die Verbindung zwischen dem Trichterhals 8, dessen Durchmesser kleiner als der Umfang des unteren Bereiches des äußeren Trichteroberteiles 3 ist, und dem äußeren Trichteroberteil 3 durch eine Abrundung 9 er­reicht. Der Ringraum 6 weist an seinem unteren Ende einen Ringspalt 13 auf, welcher zwischen der Unterkante des inneren Trichteroberteiles 4 und der Abrundung 9 ausgebil­det ist.The mixing funnel 2 located above a liquid surface 1 consists of an outer funnel upper part 3 and an inner funnel upper part 4, the upper edges of the two trapezoidal funnel upper parts (3, 4) being aligned and being connected to one another in a tightly closed manner by an annular ring 5. An annular space 6 is formed by the outer upper funnel part 3, the inner upper funnel part 4 and the circular ring 5. The upper upper part of the outer funnel 3 is penetrated by an inlet tube 7 through which the annular space 6 can be acted upon by liquid.
A cylindrical funnel neck 8 is tightly connected to the lower edge of the outer funnel top 3. The connection between the funnel neck 8, the diameter of which is smaller than the circumference of the lower region of the outer funnel upper part 3, and the outer funnel upper part 3 is achieved by a rounding 9. The annular space 6 has at its lower end an annular gap 13 which is formed between the lower edge of the inner upper funnel part 4 and the rounding 9.

Die Wirkungsweise des Mischtrichters 2 ist wie folgt: Beim Ausströmen der Flüssigkeit aus dem zwischen dem inne­ren Trichteroberteil 4 und der Abrundung 9 ausgebildeten Ringspalt 13 wird ein Vakuum erzeugt, durch welches der austretende Flüssigkeitsring 10 nach unten abgebogen und an die Innenwand des Trichterhalses 8 gepreßt wird. Dabei ist die Abrundung 9 derartig gebogen, daß ihre Tangente im Bereich des Ringspaltes 13 mit der Innenfläche des abge­bogenen Flüssigkeitsringes 10 bzw. mit dem ihm parallelen Trichterhals 8 einen Winkel α von 25 bis 35° bildet. Durch den tangentialen Eintrag der Flüssigkeit in den Ringraum 6 weist der Flüssigkeitsring 10 auch eine Rotationsbewegung auf; die Flüssigkeit bewegt sich also drehend nach unten. Von oben her wird das innere Trichteroberteil 4 entlang den Pfeilen 11 mit Pulver beaufschlagt. Das herabfallende Pulver-Luft-Gemisch wird durch die sich drehend nach unten bewegende Flüssigkeit erfaßt und benetzt. Wenn die Pulver-­Flüssigkeits-Suspension aus dem unteren Ende des Trichter­halses 8 austritt, so bildet sich ein Hohlkegel 12 aus, welcher bis zur Flüssigkeitsoberfläche 1 herunterreicht und dadurch das Entweichen von nicht benetztem Pulver ver­hindert.The operation of the mixing funnel 2 is as follows: When the liquid flows out of the annular gap 13 formed between the inner upper part 4 of the funnel and the rounding 9, a vacuum is created, through which the emerging liquid ring 10 is bent downwards and pressed against the inner wall of the funnel neck 8. The rounding 9 is bent in such a way that its tangent in the region of the annular gap 13 forms an angle α of 25 to 35 ° with the inner surface of the bent liquid ring 10 or with the funnel neck 8 parallel to it. Due to the tangential entry of the liquid into the annular space 6, the liquid ring 10 also has a rotational movement; the liquid thus rotates downwards. Powder is applied to the inner upper part 4 of the funnel from above along the arrows 11. The falling powder-air mixture is captured and wetted by the rotating liquid moving downwards. When the powder-liquid suspension emerges from the lower end of the funnel neck 8, a hollow cone 12 is formed which extends down to the liquid surface 1 and thereby prevents the non-wetted powder from escaping.

Der erfindungsgemäße Mischtrichter kann zum Auflösen von feinkörnigen Salzen, beispielsweise von Alkalitriphospha­ten, in Wasser unter Vermeidung von Staubverlusten oder zum Einbringen eines Feststoffes in eine Flüssigkeit unter Ablauf einer chemischen Reaktion mit positiver Wärmetö­nung, beispielsweise zum Eintragen von gebrannten Kalk in Naßverfahrensphosphorsäure unter Bildung von Calciumsul­fat, verwendet werden.The mixing funnel according to the invention can be used to dissolve fine-grained salts, for example alkali metal triphosphates, in water while avoiding dust losses or to introduce a solid into a liquid with the result of a chemical reaction with a positive heat effect, for example for introducing burnt lime in wet process phosphoric acid to form calcium sulfate. be used.

Claims (7)

1. Mischtrichter, bestehend aus einem Trichteroberteil und einem Trichterhals, dadurch gekennzeichnet, daß das Trichteroberteil aus je einem trapezförmigen, mit Ab­stand voneinander angeordneten äußeren Trichteroberteil (3) und inneren Trichteroberteil (4) unter Ausbildung eines Ringraumes (6) aufgebaut ist, wobei der Abstand zwischen dem äußeren Trichteroberteil (3) und dem inne­ren Trichteroberteil (4) nahe deren Oberkanten ver­schlossen ist; daß der Trichterhals (8) mit der Unter­kante des äußeren Trichteroberteiles (3) dichtschließend verbunden ist und daß das äußere Trichteroberteil (3) in seinem oberen Bereich von einem Eintrittsrohr (7) zur tangentialen Beaufschlagung mit Flüssigkeit durchdrungen ist.1. Mixing funnel, consisting of a funnel top part and a funnel neck, characterized in that the funnel top part is constructed from a trapezoidal, spaced-apart outer funnel top part (3) and inner funnel top part (4) to form an annular space (6), the Distance between the outer upper part of the funnel (3) and the inner upper part of the funnel (4) is closed near the upper edges thereof; that the funnel neck (8) is tightly connected to the lower edge of the outer funnel upper part (3) and that the outer funnel upper part (3) is penetrated in its upper region by an inlet pipe (7) for the tangential application of liquid. 2. Mischtrichter nach Anspruch 1, dadurch gekennzeichnet, daß die Oberkanten des äußeren Trichteroberteiles (3) und des inneren Trichteroberteiles (4) durch einen Kreisring (5) dichtschließend miteinander verbunden sind.2. Mixing funnel according to claim 1, characterized in that the upper edges of the outer funnel upper part (3) and the inner funnel upper part (4) by a circular ring (5) are tightly connected to each other. 3. Mischtrichter nach Anspruch 2, dadurch gekennzeichnet, daß die Oberkanten des äußeren Trichteroberteiles (3) und des inneren Trichteroberteiles (4) fluchten.3. Mixing funnel according to claim 2, characterized in that the upper edges of the outer funnel upper part (3) and the inner funnel upper part (4) are aligned. 4. Mischtrichter nach mindestens einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Verbindung zwischen dem Trichterhals (8) und der Unterkante des äußeren Trichteroberteiles (3) durch eine Abrundung (9) unter Ausbildung eines Ringspaltes (13) vorgenommen ist.4. Mixing funnel according to at least one of claims 1 to 3, characterized in that the connection between the funnel neck (8) and the lower edge of the outer funnel upper part (3) is made by rounding (9) to form an annular gap (13). 5. Mischtrichter nach mindestens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Abrundung (9) derart gebogen ist, daß ihre Tangente im Bereich des Ringspal­tes (13) und der Trichterhals (8) einen Winkel α von 25 bis 35°, vorzugsweise von 29 bis 31°, einschließen.5. Mixing funnel according to at least one of claims 1 to 4, characterized in that the rounding (9) is bent such that its tangent in the region of the annular gap (13) and the funnel neck (8) an angle α of 25 to 35 °, preferably include from 29 to 31 °. 6. Mischtrichter nach mindestens einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Ringspalt (13) 1 bis 2,5 mm breit ist.6. Mixing funnel according to at least one of claims 1 to 5, characterized in that the annular gap (13) is 1 to 2.5 mm wide. 7. Mischtrichter nach mindestens einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Durchmesser des äußeren Trichteroberteiles (3) und des inneren Trich­teroberteiles (4) im Bereich ihrer Unterkanten größer sind als der Durchmesser des Trichterhalses (8).7. Mixing funnel according to at least one of claims 1 to 6, characterized in that the diameter of the outer upper funnel part (3) and the inner upper funnel part (4) in the region of their lower edges are larger than the diameter of the funnel neck (8).
EP87113684A 1986-10-17 1987-09-18 Mixing hopper Expired - Lifetime EP0263996B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3635326 1986-10-17
DE3635326 1986-10-17
DE3707880 1987-03-12
DE19873707880 DE3707880A1 (en) 1986-10-17 1987-03-12 MIXING FUNNEL

Publications (3)

Publication Number Publication Date
EP0263996A2 true EP0263996A2 (en) 1988-04-20
EP0263996A3 EP0263996A3 (en) 1989-12-13
EP0263996B1 EP0263996B1 (en) 1992-03-04

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EP87113684A Expired - Lifetime EP0263996B1 (en) 1986-10-17 1987-09-18 Mixing hopper

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EP (1) EP0263996B1 (en)
DE (2) DE3707880A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0419280A1 (en) * 1989-09-21 1991-03-27 Halliburton Company Mixing apparatus
EP0908284A2 (en) * 1997-10-06 1999-04-14 Gebrüder Lödige Maschinenbaugesellschaft mbH Bulk material feeding apparatus
WO2000056432A1 (en) * 1999-03-19 2000-09-28 Termoelettronica S.P.A. Device for suspending substances in a liquid, and system for preparing liquid-substances mixtures for dyeing using such device

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1947851A (en) * 1930-01-31 1934-02-20 Nat Aniline & Chem Co Inc Mixing apparatus
FR1005450A (en) * 1947-07-22 1952-04-10 Process and device for spraying all liquids and fiberizing thermoplastic materials
FR1146287A (en) * 1956-03-26 1957-11-08 Improved atomization process and devices for the application of this process
US3246883A (en) * 1963-01-02 1966-04-19 Ashbrook Corp Fluid mixing method and apparatus
FR1450789A (en) * 1965-07-15 1966-06-24 Atomizing and mixing vortex
US3960175A (en) * 1974-08-16 1976-06-01 Veb Chemieanlagenbau Und Montagekombinat Leipzig Installation for charging liquids, particularly fermentation liquids, with gas
US4125334A (en) * 1977-11-17 1978-11-14 Coal Industry (Patents) Limited Apparatus for mixing two flowable substances
US4125331A (en) * 1977-05-09 1978-11-14 The Dow Chemical Company Mixing apparatus
US4218012A (en) * 1977-09-01 1980-08-19 Canadian Patents & Development Method of rapidly dissolving a particulate substance in a liquid

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1947851A (en) * 1930-01-31 1934-02-20 Nat Aniline & Chem Co Inc Mixing apparatus
FR1005450A (en) * 1947-07-22 1952-04-10 Process and device for spraying all liquids and fiberizing thermoplastic materials
FR1146287A (en) * 1956-03-26 1957-11-08 Improved atomization process and devices for the application of this process
US3246883A (en) * 1963-01-02 1966-04-19 Ashbrook Corp Fluid mixing method and apparatus
FR1450789A (en) * 1965-07-15 1966-06-24 Atomizing and mixing vortex
US3960175A (en) * 1974-08-16 1976-06-01 Veb Chemieanlagenbau Und Montagekombinat Leipzig Installation for charging liquids, particularly fermentation liquids, with gas
US4125331A (en) * 1977-05-09 1978-11-14 The Dow Chemical Company Mixing apparatus
US4218012A (en) * 1977-09-01 1980-08-19 Canadian Patents & Development Method of rapidly dissolving a particulate substance in a liquid
US4125334A (en) * 1977-11-17 1978-11-14 Coal Industry (Patents) Limited Apparatus for mixing two flowable substances

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0419280A1 (en) * 1989-09-21 1991-03-27 Halliburton Company Mixing apparatus
EP0908284A2 (en) * 1997-10-06 1999-04-14 Gebrüder Lödige Maschinenbaugesellschaft mbH Bulk material feeding apparatus
EP0908284A3 (en) * 1997-10-06 2001-03-07 Gebrüder Lödige Maschinenbaugesellschaft mbH Bulk material feeding apparatus
WO2000056432A1 (en) * 1999-03-19 2000-09-28 Termoelettronica S.P.A. Device for suspending substances in a liquid, and system for preparing liquid-substances mixtures for dyeing using such device

Also Published As

Publication number Publication date
EP0263996B1 (en) 1992-03-04
EP0263996A3 (en) 1989-12-13
DE3777059D1 (en) 1992-04-09
DE3707880A1 (en) 1988-04-21

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