EP1923129B1 - Mixing device with a rotating stirrer moving the mixture toward a receptacle with holes, and corresponding parts - Google Patents

Mixing device with a rotating stirrer moving the mixture toward a receptacle with holes, and corresponding parts Download PDF

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Publication number
EP1923129B1
EP1923129B1 EP07120748A EP07120748A EP1923129B1 EP 1923129 B1 EP1923129 B1 EP 1923129B1 EP 07120748 A EP07120748 A EP 07120748A EP 07120748 A EP07120748 A EP 07120748A EP 1923129 B1 EP1923129 B1 EP 1923129B1
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EP
European Patent Office
Prior art keywords
products
receptacle
mixing
rotary element
pasty
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.)
Not-in-force
Application number
EP07120748A
Other languages
German (de)
French (fr)
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EP1923129A1 (en
Inventor
François Depuydt
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.)
Sympak France
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Sympak France
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Publication date
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Publication of EP1923129A1 publication Critical patent/EP1923129A1/en
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Publication of EP1923129B1 publication Critical patent/EP1923129B1/en
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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
    • B01F27/80—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
    • B01F27/811—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 with the inflow from one side only, e.g. stirrers placed on the bottom of the receptacle, or used as a bottom discharge pump
    • 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
    • B01F27/811—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 with the inflow from one side only, e.g. stirrers placed on the bottom of the receptacle, or used as a bottom discharge pump
    • B01F27/8111—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 with the inflow from one side only, e.g. stirrers placed on the bottom of the receptacle, or used as a bottom discharge pump the stirrers co-operating with stationary guiding elements, e.g. surrounding stators or intermeshing stators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/06—Mixing of food ingredients
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/21—Mixing of ingredients for cosmetic or perfume compositions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2215/00—Auxiliary or complementary information in relation with mixing
    • B01F2215/04—Technical information in relation with mixing
    • B01F2215/0413—Numerical information
    • B01F2215/0436—Operational information
    • B01F2215/0481—Numerical speed values
    • 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
    • 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
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0721—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis parallel with respect to the rotating axis
    • 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
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0724—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis directly mounted on the rotating axis
    • 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
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B01F27/1125—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades with vanes or blades extending parallel or oblique to the stirrer axis
    • 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
    • B01F35/90—Heating or cooling systems

Definitions

  • the field of the invention is that of equipment for mixing products. More specifically, the invention relates to a product mixing device of which at least one is liquid or pasty, or even semi-pasty.
  • the invention applies in particular, but not exclusively, to the fields of food processing and cosmetics.
  • the rotary member is driven by a shaft passing through the base of the vessel and coupled to drive means.
  • the rotational speed of the rotary element is adapted according to the products to be mixed and can reach 3000 rpm.
  • the scraper arm is in turn coupled to motor means either from below the tank or from above the tank.
  • Such a scraper arm is generally driven at a rotational speed of about 50 rpm.
  • Such mixing devices may be combined with heating and / or cooling means depending on the applications and the tank may be depressed.
  • the emulsion between the ingredients is not satisfactory and the final product does not have a good viscosity.
  • the invention particularly aims to overcome these disadvantages of the prior art.
  • the object of the invention is to propose a technique which makes it possible to significantly improve the mechanical mixing of products of which at least one is liquid, pasty or semi-pasty.
  • the invention also aims to propose such a technique that can be easily adapted to existing equipment.
  • the invention also aims to provide such a technique that can be easily declined depending on the nature of the products and / or the quality of the mixtures to obtain.
  • Another object of the invention is to provide such a technique which is simple in design and easy to implement.
  • a device for mixing products of which at least one is liquid or pasty or semi-pasty of the type comprising at least one vessel incorporating a rotary element, characterized in that said rotary element has means for generating a downward flow of said products in the direction of a receptacle placed at the base of said rotary element, said receptacle comprising at least one wall delimiting a perimeter and having a plurality of recesses through which said products are intended to pass.
  • Such a device can significantly improve the quality of the mixture obtained compared to the solutions of the prior art.
  • said rotary element comprises at least one series of blades extending from a central element by being inclined downwards.
  • the rotary element thus created, according to a technique that is simple to implement, a first stirring and a first reduction in size (cutting effect of the blades) of possible pieces (vegetables for example) while generating a downward flow of the products in question. direction of the receptacle.
  • the device comprises a rotary ejector member within said perimeter defined by said one or more walls, and provided for directing said products to said recesses.
  • said ejector member comprises a series of four blades distributed around a central body and forming between them 90 ° angles around said central element, said blades preferably extending eccentrically with respect to the axis of rotation of said organ.
  • the invention can operate with the ejector member alone and the receptacle.
  • the rapid rotation of the ejector alone generating the axial flow.
  • said one or more walls define a cylindrical section.
  • said one or more walls define a truncated cone.
  • said receptacle is mounted fixed in rotation.
  • said receptacle is rotatably mounted.
  • Such an embodiment makes it possible to vary the relative speeds of the rotary element and of the ejector member relative to the receptacle, which makes it possible, as needed, to further increase the mixing power of the device.
  • the device comprises a scraper arm of said rotatably mounted tank.
  • said receptacle is preferably integral in rotation with said scraper arm which has two directions of rotation.
  • the invention also relates to a subassembly for mounting in a tank of a product mixing device of which at least one is liquid or pasty or semi-pasty, characterized in that it comprises at least one rotary element and at least one a receptacle placed at the base of said rotary element, said rotary element having means for generating a downward flow of said products towards said receptacle, said receptacle comprising at least one wall delimiting a perimeter and having a plurality of recesses through which said products are intended to pass.
  • the invention can thus easily be adapted to existing equipment, by mounting such a subassembly in the tank and by coupling it to the available motor means.
  • the principle of the invention lies in the fact of proposing a product mixing technique according to which the products are forced to pass through passages of reduced cross-sections.
  • Such a receptacle 3 is illustrated by the figure 2 .
  • the receptacle 3 comprises a bottom 31 from which extends a wall 32 defining a perimeter.
  • the wall 32 has a plurality of recesses 321 through which the products to be mixed are intended to pass.
  • the bottom 31 of the receptacle has orifices 311 allowing the passage of fastening means for securing the receptacle to the tank (the receptacle may similarly be welded to the tank according to a possible variant).
  • the recesses 321 take the form of slots whose median axis forms a non-zero angle with the vertical.
  • the number and width of the slots can be adapted as necessary, particularly depending on the nature of the products to be mixed and / or characteristics of the mixture to be obtained.
  • the rotary element 2 comprises a series of blades 22 extending from a central body 21 integral with a drive shaft 20 passing through the bottom 12 of the tank and coupled to drive means (not shown).
  • the blades 22 extend from the central element 21 by being inclined towards the bottom of the tank, this allowing, when the rotating element is in rotation, to generate a downward flow of the products.
  • the rotary element can extend upwards inside the tank in order to possibly support other means of stirring the products.
  • the blades 22 are held integral with the shaft 20 by means of rings and a clamping element along the longitudinal axis of the shaft.
  • the device comprises an ejector member designed to promote the ejection of the products present in the receptacle, from the inside to the outside thereof.
  • Such an ejector member 4 is mounted in the receptacle 3 and fits in the volume defined by the latter. This member is mounted integral in rotation with the rotary element 2.
  • an ejector member according to the present embodiment of the invention comprises a central body 41 from which spread pale 42.
  • the central body 41 has a square-shaped section, each side of the square section extending to form the blades which consequently extend in an eccentric plane with respect to the axis of rotation of the ejector member, the pale forming two by two a 90 ° angle.
  • the bore 411 of the central body is threaded in such a way that the ejection member performs a function of a clamping nut (cooperating with a threaded portion of the shaft 20) of the blades 22 and bushings. central element 21.
  • the receptacle is mounted to rotate with a scraper arm (known per se, not shown) of the inner face of the wall of the tank.
  • an optimized mixing effect is obtained by the relative speed play of the rotary element 2 (whose speed ranges from 1000 to 3000 rpm or more) and the receptacle 3 rotatably coupled to the scraper arm (rotating in direction reverse of the rotating element at a speed of about 50 rpm).
  • the inner wall of the receptacle 3 may be provided with a relief 321 which tends to create a cleaning effect of the receptacle when the direction of rotation of the scraper arm is reversed.
  • rotating member 2 including the ejector member 4 and the receptacle 3 may be provided as a subassembly ready to be reported in an existing tank.
  • the products to be mixed are introduced through the upper part of the tank 1 in a conventional manner.
  • the driving means of the rotary element 2 are actuated and drive the latter at a speed of between 1000 and 3000 rpm or higher.
  • the blades 22 of the rotary element by their position and inclination, tend to generate a downward flow of the products (by creating a vortex) towards the receptacle 3.
  • the ejector member Inside the receptacle, the ejector member also contributes downward flow of the products and creates a centrifugal effect and forces the products to pass through the recesses 321 of the receptacle.
  • the circulation of products through passages of reduced section tends to promote the approximation of the products while pressing them through the passages, which results in obtaining a mixture of high quality.
  • Unloading the vessel is carried out by including it in a manner known per se.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
  • Accessories For Mixers (AREA)
  • Food-Manufacturing Devices (AREA)

Abstract

The device has a trough (1) integrating a rotative element (2) that is in the form of sub assembly, where the element generates a descending flux for products in a direction of receptacle (3) which is placed at a base of the rotative element. The receptacle includes a wall delimiting the perimeter and forming a set of recesses (321) through which the products are destined to be passed. An ejector unit inscribed in the perimeter is provided for directing the products towards the recesses.

Description

Le domaine de l'invention est celui des équipements pour le mélange de produits. Plus précisément, l'invention concerne un dispositif de mélange de produits dont au moins un est liquide ou pâteux, voire semi-pâteux.The field of the invention is that of equipment for mixing products. More specifically, the invention relates to a product mixing device of which at least one is liquid or pasty, or even semi-pasty.

L'invention s'applique en particulier, mais non exclusivement, aux domaines de l'agro-alimentaire et de la cosmétique.The invention applies in particular, but not exclusively, to the fields of food processing and cosmetics.

Dans le domaine de l'invention, les dispositifs mélangeurs tels que les dispositifs mélangeurs décrits dans les demandes de brevets EP1541222 , FR 1128592 et DE 1101 918 , comprennent généralement

  • une cuve ;
  • au moins un élément rotatif entraîné par un arbre central et portant des lames (classiquement désignées par le terme « couteaux ») s'étendant radialement à l'intérieur de la cuve ;
  • un bras racleur tournant à l'intérieur de la cuve et destiné à racler la paroi interne de celle-ci.
In the field of the invention, the mixing devices such as the mixing devices described in the patent applications EP1541222 , FR 1128592 and DE 1101 918 , generally include
  • a tank ;
  • at least one rotary member driven by a central shaft and carrying blades (conventionally referred to as "knives") extending radially inside the vessel;
  • a scraper arm rotating inside the tank and intended to scrape the inner wall thereof.

L'élément rotatif est entraîné par un arbre traversant la base de la cuve et couplé à des moyens moteurs.The rotary member is driven by a shaft passing through the base of the vessel and coupled to drive means.

La vitesse de rotation de l'élément rotatif est adaptée en fonction des produits à mélanger et peut atteindre 3000 tr/min.The rotational speed of the rotary element is adapted according to the products to be mixed and can reach 3000 rpm.

Le bras racleur est quant à lui couplé à des moyens moteurs soit par le dessous de la cuve soit par le dessus de la cuve.The scraper arm is in turn coupled to motor means either from below the tank or from above the tank.

Un tel bras racleur est généralement entraîné à une vitesse de rotation d'environ 50 tr/min.Such a scraper arm is generally driven at a rotational speed of about 50 rpm.

Classiquement, les cuves des dispositifs mélangeurs sont montées orientables sur un châssis par rapport à un axe horizontal de façon à occuper différentes positions :

  • une position verticale pour le chargement des produits ;
  • une position inclinée vers le haut d'environ 30° par rapport à la verticale pendant le mélange ;
  • une position horizontale (voire inclinée vers le bas) pour le déchargement.
Conventionally, the tanks of the mixing devices are pivotably mounted on a frame with respect to a horizontal axis so as to occupy different positions:
  • a vertical position for loading products;
  • an upwardly inclined position of about 30 ° to the vertical during mixing;
  • a horizontal position (or inclined downwards) for unloading.

De tels dispositifs mélangeurs peuvent être combinés à des moyens de chauffage et/ou de refroidissement en fonction des applications et la cuve peut être mise en dépression.Such mixing devices may be combined with heating and / or cooling means depending on the applications and the tank may be depressed.

Des mélangeurs du type qui vient d'être décrit sont désormais couramment utilisés, dans diverses applications telles que :

  • dispersion d'un poudre dans une phase liquide (par exemple pour la fabrication d'une purée de pommes de terre) ;
  • émulsion en phase aqueuse (par exemple pour la fabrication d'une mayonnaise) ;
  • mélange de produits solides ou semi-pâteux avec des produits liquides ou semi-liquides (par exemple pour le mélange de soupes).
Mixers of the type just described are now commonly used, in various applications such as:
  • dispersing a powder in a liquid phase (for example for making a mashed potato);
  • emulsion in aqueous phase (for example for the manufacture of a mayonnaise);
  • mixing of solid or semi-pasty products with liquid or semi-liquid products (for example for mixing soups).

Dans la pratique, on constate que les techniques actuelles ne donnent pas entière satisfaction.In practice, it is found that current techniques are not entirely satisfactory.

Par exemple pour les mayonnaises, l'émulsion entre les ingrédients n'est pas satisfaisante et le produit final ne présente pas une bonne viscosité.For example for mayonnaise, the emulsion between the ingredients is not satisfactory and the final product does not have a good viscosity.

Dans le cas des purées, celles-ci ne sont pas assez « fines » : leur granulométrie est variable et/ou trop grossière, ce qui peut ne pas être au goût de certains consommateurs (en particulier des enfants et des personnes âgées).In the case of purees, they are not "fine" enough: their particle size is variable and / or too coarse, which may not be to the taste of some consumers (especially children and the elderly).

L'invention a notamment pour objectif de pallier ces inconvénients de l'art antérieur.The invention particularly aims to overcome these disadvantages of the prior art.

Plus précisément, l'invention a pour objectif de proposer une technique qui permette d'améliorer notablement le mélange mécanique de produits dont au moins un est liquide, pâteux ou semi-pâteux.More specifically, the object of the invention is to propose a technique which makes it possible to significantly improve the mechanical mixing of products of which at least one is liquid, pasty or semi-pasty.

L'invention a également pour objectif de proposer une telle technique qui puisse être aisément adaptée sur des matériels existants.The invention also aims to propose such a technique that can be easily adapted to existing equipment.

L'invention a aussi pour objectif de proposer une telle technique qui puisse être facilement déclinée en fonction de la nature des produits et/ou de la qualité des mélanges à obtenir.The invention also aims to provide such a technique that can be easily declined depending on the nature of the products and / or the quality of the mixtures to obtain.

Un autre objectif de l'invention est de proposer une telle technique qui soit simple de conception et facile à mettre en oeuvre.Another object of the invention is to provide such a technique which is simple in design and easy to implement.

Ces objectifs, ainsi que d'autres qui apparaîtront par la suite, sont atteints grâce à l'invention qui a pour objet un dispositif de mélange de produits dont au moins un est liquide ou pâteux ou semi-pâteux, du type comprenant au moins une cuve intégrant un élément rotatif, caractérisé en ce ledit élément rotatif présente des moyens de génération d'un flux descendant desdits produits en direction d'un réceptacle placé à la base dudit élément rotatif, ledit réceptacle comprenant au moins une paroi délimitant un périmètre et présentant une pluralité d'évidements au travers desquels lesdits produits sont destinés à passer.These objectives, as well as others which will appear later, are achieved thanks to the invention which has for object a device for mixing products of which at least one is liquid or pasty or semi-pasty, of the type comprising at least one vessel incorporating a rotary element, characterized in that said rotary element has means for generating a downward flow of said products in the direction of a receptacle placed at the base of said rotary element, said receptacle comprising at least one wall delimiting a perimeter and having a plurality of recesses through which said products are intended to pass.

Un tel dispositif permet d'améliorer notablement la qualité du mélange obtenu comparé aux solutions de l'art antérieur.Such a device can significantly improve the quality of the mixture obtained compared to the solutions of the prior art.

En effet, un tel dispositif permet de réaliser :

  • un brassage « grossier » de façon classique ;
  • un mélange « fin » grâce au réceptacle ajouré, le passage forcé des produits au travers des évidements favorisant leur mélange.
Indeed, such a device can achieve:
  • a "coarse" brewing in a conventional manner;
  • a "fine" mixture thanks to the perforated receptacle, the forced passage of the products through the recesses favoring their mixing.

On peut donc, grâce à l'invention, améliorer la qualité des émulsions et/ou la granulométrie du produit fini, en fonction des produits en mélange.It is therefore possible, by virtue of the invention, to improve the quality of the emulsions and / or the granulometry of the finished product, depending on the products in mixture.

Selon une solution avantageuse, ledit élément rotatif comprend au moins une série de lames s'étendant à partir d'un élément central en étant inclinées vers le bas.According to an advantageous solution, said rotary element comprises at least one series of blades extending from a central element by being inclined downwards.

L'élément rotatif créé ainsi, selon une technique simple à mettre en oeuvre, un premier brassage et une première réduction de taille (effet de coupe des lames) d'éventuel morceaux (légumes par exemple) tout en engendrant un flux descendant des produits en direction du réceptacle.The rotary element thus created, according to a technique that is simple to implement, a first stirring and a first reduction in size (cutting effect of the blades) of possible pieces (vegetables for example) while generating a downward flow of the products in question. direction of the receptacle.

Selon une solution préférée, le dispositif comprend un organe éjecteur rotatif s'inscrivant dans ledit périmètre délimité par ladite ou lesdites parois, et prévu pour diriger lesdits produits vers lesdits évidements.According to a preferred solution, the device comprises a rotary ejector member within said perimeter defined by said one or more walls, and provided for directing said products to said recesses.

On obtient ainsi des effets combinés de l'élément rotatif et de l'organe éjecteur : le premier créé un effet axial (flux descendant), le flux descendant étant repris par l'organe éjecteur qui engendre un flux radial centrifuge des produits, forçant ceux-ci à passer au travers des évidements.Combined effects of the rotary element and the ejector member are thus obtained: the first creates an axial effect (downward flow), the downward flow being taken up by the ejector member which generates a centrifugal radial flow of the products, forcing those to pass through the recesses.

Avantageusement, ledit organe éjecteur comprend une série de quatre pales réparties autour d'un corps central et formant entre elles des angles de 90° autour dudit élément central, lesdites pales s'étendant préférentiellement de façon excentrées par rapport à l'axe de rotation dudit organe.Advantageously, said ejector member comprises a series of four blades distributed around a central body and forming between them 90 ° angles around said central element, said blades preferably extending eccentrically with respect to the axis of rotation of said organ.

On obtient ainsi un organe éjecteur simple de conception et facile à fabriquer (comme cela va apparaître plus clairement par la suite), un tel organe ainsi conçu exerçant de plus un pouvoir optimisé d'éjection radiale des produits.Thus, a simple ejector body of design and easy to manufacture (as will appear more clearly later), such a body thus designed also having an optimized power of radial ejection products.

Dans le cas de produits ne nécessitant pas d'effet de coupe, l'invention peut fonctionner avec l'organe éjecteur seul et le réceptacle. La rotation rapide de l'éjecteur engendrant à elle seule le flux axial.In the case of products that do not require a cutting effect, the invention can operate with the ejector member alone and the receptacle. The rapid rotation of the ejector alone generating the axial flow.

Selon une première variante envisageable, ladite ou lesdites parois définissent un tronçon cylindrique.According to a first conceivable variant, said one or more walls define a cylindrical section.

Selon une deuxième variante envisageable, ladite ou lesdites parois définissent un tronc de cône.According to a second conceivable variant, said one or more walls define a truncated cone.

Selon un premier mode de réalisation, ledit réceptacle est monté fixe en rotation.According to a first embodiment, said receptacle is mounted fixed in rotation.

Selon un deuxième mode de réalisation, ledit réceptacle est monté mobile en rotation.According to a second embodiment, said receptacle is rotatably mounted.

Un tel mode de réalisation permet de faire varier les vitesses relatives de l'élément rotatif et de l'organe éjecteur par rapport au réceptacle, ce qui permet, en fonction des besoins, d'augmenter encore le pouvoir mélangeur du dispositif.Such an embodiment makes it possible to vary the relative speeds of the rotary element and of the ejector member relative to the receptacle, which makes it possible, as needed, to further increase the mixing power of the device.

Avantageusement, le dispositif comprend un bras racleur de ladite cuve montée mobile en rotation.Advantageously, the device comprises a scraper arm of said rotatably mounted tank.

Dans ce cas, ledit réceptacle est préférentiellement solidaire en rotation dudit bras racleur qui possède deux sens de rotation.In this case, said receptacle is preferably integral in rotation with said scraper arm which has two directions of rotation.

L'invention concerne également un sous-ensemble à monter dans une cuve d'un dispositif de mélange de produits dont au moins un est liquide ou pâteux ou semi-pâteux, caractérisé en ce qu'il comprend au moins un élément rotatif et au moins un réceptacle placé à la base dudit élément rotatif, ledit élément rotatif présentant des moyens de génération d'un flux descendant desdits produits en direction dudit réceptacle, ledit réceptacle comprenant au moins une paroi délimitant un périmètre et présentant une pluralité d'évidements au travers desquels lesdits produits sont destinés à passer.The invention also relates to a subassembly for mounting in a tank of a product mixing device of which at least one is liquid or pasty or semi-pasty, characterized in that it comprises at least one rotary element and at least one a receptacle placed at the base of said rotary element, said rotary element having means for generating a downward flow of said products towards said receptacle, said receptacle comprising at least one wall delimiting a perimeter and having a plurality of recesses through which said products are intended to pass.

On peut ainsi aisément adapter l'invention à des équipements existants, en montant un tel sous-ensemble dans la cuve et en le couplant aux moyens moteurs disponibles.The invention can thus easily be adapted to existing equipment, by mounting such a subassembly in the tank and by coupling it to the available motor means.

D'autres caractéristiques et avantages de l'invention apparaîtront plus clairement à la lecture de la description suivante d'un mode de réalisation préférentiel de l'invention, donné à titre d'exemple illustratif et non limitatif, et des dessins annexés parmi lesquels :

  • la figure 1 est une vue partielle en coupe d'un dispositif de mélange selon l'invention ;
  • la figure 2 est une vue en perspective d'un réceptacle destiné à équiper un dispositif de mélange selon l'invention ;
  • la figure 3 est une vue en perspective d'un organe éjecteur destiné à équiper un dispositif de mélange selon l'invention.
Other characteristics and advantages of the invention will emerge more clearly on reading the following description of a preferred embodiment of the invention, given by way of illustrative and nonlimiting example, and the appended drawings among which:
  • the figure 1 is a partial sectional view of a mixing device according to the invention;
  • the figure 2 is a perspective view of a receptacle for equipping a mixing device according to the invention;
  • the figure 3 is a perspective view of an ejector member for equipping a mixing device according to the invention.

Tel qu'indiqué précédemment, le principe de l'invention réside dans le fait de proposer une technique de mélange de produits selon laquelle on force les produits à passer dans des passages de sections réduites.As indicated above, the principle of the invention lies in the fact of proposing a product mixing technique according to which the products are forced to pass through passages of reduced cross-sections.

En référence à la figure 1, un dispositif de mélange de produits ont au moins un est liquide ou pâteux ou semi-pâteux comprend :

  • une cuve 1 délimitée par une paroi latérale 11 sensiblement cylindrique s'étendant à partir d'un fond 12 ;
  • un élément rotatif 2 prévu pour entraîner les produits vers la base de la cuve ;
  • un réceptacle 3 monté à la base de l'élément rotatif 2.
With reference to the figure 1 , a product mixing device has at least one is liquid or pasty or semi-pasty comprises:
  • a tank 1 delimited by a substantially cylindrical side wall 11 extending from a bottom 12;
  • a rotary member 2 provided to drive the products to the base of the tank;
  • a receptacle 3 mounted at the base of the rotary element 2.

Un tel réceptacle 3 est illustré par la figure 2.Such a receptacle 3 is illustrated by the figure 2 .

Tel que cela apparaît sur cette figure, le réceptacle 3 comprend un fond 31 à partir duquel s'étend une paroi 32 délimitant un périmètre. La paroi 32 présente une pluralité d'évidements 321 au travers desquels les produits à mélanger sont destinés à passer. Le fond 31 du réceptacle présente des orifices 311 permettant le passage de moyens de fixation pour solidariser le réceptacle à la cuve (le réceptacle pouvant de façon similaire être soudé à la cuve selon une variante envisageable).As shown in this figure, the receptacle 3 comprises a bottom 31 from which extends a wall 32 defining a perimeter. The wall 32 has a plurality of recesses 321 through which the products to be mixed are intended to pass. The bottom 31 of the receptacle has orifices 311 allowing the passage of fastening means for securing the receptacle to the tank (the receptacle may similarly be welded to the tank according to a possible variant).

Tel qu'illustré, les évidements 321 prennent la forme de fentes dont l'axe médian forme un angle non nul avec la verticale.As illustrated, the recesses 321 take the form of slots whose median axis forms a non-zero angle with the vertical.

On note que le nombre et la largeur des fentes peuvent être adaptés autant que de besoin, notamment en fonction de la nature des produits à mélanger et/ou des caractéristiques du mélange à obtenir.Note that the number and width of the slots can be adapted as necessary, particularly depending on the nature of the products to be mixed and / or characteristics of the mixture to be obtained.

On note également que :

  • l'inclinaison des fentes peut varier, celles-ci pouvant aussi s'étendre selon un axe médian vertical ;
  • la paroi 32 prend la forme, selon la figure 2, d'une portion cylindrique, et peut également prendre la forme d'un tronc de cône dont le diamètre le plus grand correspond au fond du réceptacle.
We also note that:
  • the inclination of the slits may vary, these too extend along a vertical median axis;
  • the wall 32 takes the form, according to the figure 2 , of a cylindrical portion, and may also take the form of a truncated cone whose largest diameter corresponds to the bottom of the receptacle.

L'élément rotatif 2 comprend une série de lames 22 s'étendant à partir d'un corps central 21 solidaire d'un arbre d'entraînement 20 traversant le fond 12 de la cuve et couplé à des moyens moteurs (non représentés).The rotary element 2 comprises a series of blades 22 extending from a central body 21 integral with a drive shaft 20 passing through the bottom 12 of the tank and coupled to drive means (not shown).

Tel que cela apparaît clairement sur la figure 1, les lames 22 s'étendent à partir de l'élément central 21 en étant inclinées vers le fond de la cuve, ceci permettant, lorsque l'élément rotatif est en rotation, de générer un flux descendant des produits. 'As it clearly appears on the figure 1 , the blades 22 extend from the central element 21 by being inclined towards the bottom of the tank, this allowing, when the rotating element is in rotation, to generate a downward flow of the products. '

On note que l'élément rotatif peut se prolonger vers le haut à l'intérieur de la cuve en vue de supporter éventuellement d'autres moyens de brassage des produits.It should be noted that the rotary element can extend upwards inside the tank in order to possibly support other means of stirring the products.

Les lames 22 sont maintenues solidaires de l'arbre 20 à l'aide de bagues et d'un élément de serrage selon l'axe longitudinal de l'arbre.The blades 22 are held integral with the shaft 20 by means of rings and a clamping element along the longitudinal axis of the shaft.

Par ailleurs, selon le présent mode de réalisation de l'invention, le dispositif comprend un organe éjecteur prévu pour favoriser l'éjection des produits présents dans le réceptacle, de l'intérieur vers l'extérieur de celui-ci.Furthermore, according to the present embodiment of the invention, the device comprises an ejector member designed to promote the ejection of the products present in the receptacle, from the inside to the outside thereof.

Un tel organe éjecteur 4 est monté dans le réceptacle 3 et s'inscrit dans le volume délimité par ce dernier. Cet organe est monté solidaire en rotation de l'élément rotatif 2.Such an ejector member 4 is mounted in the receptacle 3 and fits in the volume defined by the latter. This member is mounted integral in rotation with the rotary element 2.

On rappelle que le principe de l'invention s'applique également au cas où l'élément rotatif est réduit à l'organe éjecteur seul (c'est-à-dire en l'absence des lames 22).It is recalled that the principle of the invention also applies to the case where the rotary element is reduced to the ejector member alone (that is to say in the absence of blades 22).

En référence à la figure 3, un organe éjecteur selon le présent mode de réalisation de l'invention comprend un corps central 41 à partir duquel s'étendent des pâles 42.With reference to the figure 3 , an ejector member according to the present embodiment of the invention comprises a central body 41 from which spread pale 42.

Plus précisément, le corps central 41 présente une section de forme carrée, chaque côté de la section carrée se prolongeant pour former les pâles qui s'étendent par conséquent dans un plan excentré par rapport à l'axe de rotation de l'organe éjecteur, les pâles formant deux à deux un angle à 90°.More specifically, the central body 41 has a square-shaped section, each side of the square section extending to form the blades which consequently extend in an eccentric plane with respect to the axis of rotation of the ejector member, the pale forming two by two a 90 ° angle.

De plus, l'alésage 411 du corps central est fileté de telle sorte que l'organe d'éjection exerce une fonction d'écrou de serrage (coopérant avec une portion filetée de l'arbre 20) des lames 22 et des bagues de l'élément central 21.In addition, the bore 411 of the central body is threaded in such a way that the ejection member performs a function of a clamping nut (cooperating with a threaded portion of the shaft 20) of the blades 22 and bushings. central element 21.

Le réceptacle est monté solidaire en rotation d'un bras racleur (connu en soi, non représenté) de la face interne de la paroi de la cuve.The receptacle is mounted to rotate with a scraper arm (known per se, not shown) of the inner face of the wall of the tank.

Ainsi, on obtient un effet optimisé de mélange par le jeu de vitesses relatives de l'élément rotatif 2 (dont la vitesse va de 1000 à 3000 tr/min ou plus) et du réceptacle 3 couplé en rotation au bras racleur (tournant en sens inverse de l'élément rotatif, à une vitesse d'environ 50 tr/min).Thus, an optimized mixing effect is obtained by the relative speed play of the rotary element 2 (whose speed ranges from 1000 to 3000 rpm or more) and the receptacle 3 rotatably coupled to the scraper arm (rotating in direction reverse of the rotating element at a speed of about 50 rpm).

Par ailleurs, la paroi interne du réceptacle 3 peut être pourvue d'un relief 321 ce qui tend à créer un effet de débourrage du réceptacle lorsque l'on inverse le sens de rotation du bras racleur.Moreover, the inner wall of the receptacle 3 may be provided with a relief 321 which tends to create a cleaning effect of the receptacle when the direction of rotation of the scraper arm is reversed.

On note que l'élément rotatif 2 incluant l'organe éjecteur 4 et le réceptacle 3 peuvent être proposés sous forme d'un sous-ensemble prêt à être rapporté dans une cuve existante.Note that the rotating member 2 including the ejector member 4 and the receptacle 3 may be provided as a subassembly ready to be reported in an existing tank.

Le fonctionnement d'un dispositif selon l'invention tel que celui qui vient d'être décrit est le suivant.The operation of a device according to the invention such as that just described is as follows.

Les produits à mélanger sont introduits par la partie supérieure de la cuve 1 de façon classique.The products to be mixed are introduced through the upper part of the tank 1 in a conventional manner.

Les moyens moteurs de l'élément rotatif 2 sont actionnés et entraînent ce dernier à une vitesse comprise entre 1000 et 3000 tr/min ou supérieure.The driving means of the rotary element 2 are actuated and drive the latter at a speed of between 1000 and 3000 rpm or higher.

Les lames 22 de l'élément rotatif, de par leur position et leur inclinaison, tendent à générer un flux descendant des produits (en créant un vortex) en direction du réceptacle 3. A l'intérieur du réceptacle, l'organe éjecteur contribue également au flux descendant des produits et créé un effet centrifuge et force les produits à passer au travers des évidements 321 du réceptacle. La circulation des produits au travers de passages de section réduite tend à favoriser le rapprochement des produits tout en les pressant au travers des passages, ce qui a pour résultat l'obtention d'un mélange d'une grande qualité.The blades 22 of the rotary element, by their position and inclination, tend to generate a downward flow of the products (by creating a vortex) towards the receptacle 3. Inside the receptacle, the ejector member also contributes downward flow of the products and creates a centrifugal effect and forces the products to pass through the recesses 321 of the receptacle. The circulation of products through passages of reduced section tends to promote the approximation of the products while pressing them through the passages, which results in obtaining a mixture of high quality.

Le déchargement de la cuve s'effectue en incluant celle-ci de façon connue en soi.Unloading the vessel is carried out by including it in a manner known per se.

Claims (8)

  1. Device for mixing of products, at least one of which is liquid or pasty or semi-pasty, comprising at least one vessel (1) which incorporates a rotary element (2) and a receptacle (3) which is placed at the base of the said rotary element (2), the said rotary element (2) has means (22) for generation of a descending flow of the said products in the direction of the receptacle (3), the said receptacle (3) comprising at least one wall (32) which delimits a perimeter, and has a plurality of recesses (321) through which the said products are designed to pass, and characterised in that it comprises a scraper arm for the said vessel (1), the said receptacle (3) being integral in rotation with the said scraper arm.
  2. Device according to claim 1 for mixing of products, characterised in that it comprises a rotary ejector unit (4) which is contained in the said perimeter which is delimited by the said wall(s) (32), and is designed to guide the said products towards the said recesses (321).
  3. Device according to claim 2 for mixing of products, characterised in that the said ejector unit (4) comprises a series of four blades (42) which are distributed around a central body (41), and form between one another angles of 90 aground the said central element (41).
  4. Device according to claim 4 for mixing of products, characterised in that the said blades (42) extend eccentrically relative to the axis of rotation of the said unit (4).
  5. Device according to any one of claims 1 to 4 for mixing of products, characterised in that the said rotary element (2) comprises a series of blades (42) which extend from a central element (41), whilst being inclined downwards.
  6. Device according to any one of claims 1 to 5 for mixing of products, characterised in that the said wall(s) (32) define(s) a cylindrical section.
  7. Device according to any one of claims 1 to 5 for mixing of products, characterised in that the said wall(s) (32) define (s) a truncated cone.
  8. Sub-assembly to be fitted in a vessel in order to form a device according to at least one of the preceding claims, for mixing of products, at least one of which is liquid or pasty or semi-pasty, characterised in that it comprises at least one rotary element (2) and at least one receptacle (3) which is placed at the base of the said rotary element (2), the said rotary element (2) having means (22) for generation of a descending flow of the said products in the direction of the said receptacle (3), the said receptacle (3) comprising at least one wall (32) which delimits a perimeter, and having a plurality of recesses (321), the said receptacle (3) being integral in rotation with a scraper arm.
EP07120748A 2006-11-16 2007-11-15 Mixing device with a rotating stirrer moving the mixture toward a receptacle with holes, and corresponding parts Not-in-force EP1923129B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0610015A FR2908670B1 (en) 2006-11-16 2006-11-16 MIXER DEVICE COMPRISING A ROTATING ELEMENT DIRECTING MIXER PRODUCTS TO A RECEPTACLE WITH EVIDENCE, AND CORRESPONDING SUBASSEMBLY.

Publications (2)

Publication Number Publication Date
EP1923129A1 EP1923129A1 (en) 2008-05-21
EP1923129B1 true EP1923129B1 (en) 2009-09-16

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Application Number Title Priority Date Filing Date
EP07120748A Not-in-force EP1923129B1 (en) 2006-11-16 2007-11-15 Mixing device with a rotating stirrer moving the mixture toward a receptacle with holes, and corresponding parts

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EP (1) EP1923129B1 (en)
AT (1) ATE442897T1 (en)
DE (1) DE602007002459D1 (en)
FR (1) FR2908670B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102513008B (en) * 2011-10-20 2014-06-04 温州天富机械有限公司 Conical outer circulating emulsifying machine
EP3075441B1 (en) * 2015-04-02 2022-10-05 Spcm Sa Improved apparatus for dispersing a water-soluble polymer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1128592A (en) * 1955-04-20 1957-01-08 Improvements to mixers for tank grinding
DE1101918B (en) * 1957-08-07 1961-03-09 Beteiligungs & Patentverw Gmbh Device for mixing and / or comminuting powdery and / or liquid material
JPH0822739B2 (en) * 1986-05-22 1996-03-06 富士写真フイルム株式会社 Method and apparatus for producing silver halide grains
CH671524A5 (en) * 1986-09-04 1989-09-15 Maurer Sa Ing A Homogenising lumpy solids in liq. medium - in which rotary arms homogenise solids with liq, forced outwards though fixed ring sieves with decreasing hole size
US6000840A (en) * 1997-12-17 1999-12-14 Charles Ross & Son Company Rotors and stators for mixers and emulsifiers
NL1008622C2 (en) * 1998-03-17 1999-09-27 Marfil Machinery B V Mixing apparatus with agitator comprising impeller and variable cross section impeller cage
JP3792606B2 (en) * 2002-06-05 2006-07-05 満 中野 Stirring apparatus and dispersion apparatus using the stirring apparatus

Also Published As

Publication number Publication date
ATE442897T1 (en) 2009-10-15
FR2908670A1 (en) 2008-05-23
EP1923129A1 (en) 2008-05-21
FR2908670B1 (en) 2009-10-09
DE602007002459D1 (en) 2009-10-29

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