EP0737507B1 - Mixer with a rotating tank - Google Patents

Mixer with a rotating tank Download PDF

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Publication number
EP0737507B1
EP0737507B1 EP96420101A EP96420101A EP0737507B1 EP 0737507 B1 EP0737507 B1 EP 0737507B1 EP 96420101 A EP96420101 A EP 96420101A EP 96420101 A EP96420101 A EP 96420101A EP 0737507 B1 EP0737507 B1 EP 0737507B1
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EP
European Patent Office
Prior art keywords
tank
mixer
axis
frame
mixer according
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.)
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EP96420101A
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German (de)
French (fr)
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EP0737507A3 (en
EP0737507A2 (en
Inventor
Bernard Lemineur
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BERNARD LAZARETH Ets
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BERNARD LAZARETH Ets
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Publication of EP0737507A3 publication Critical patent/EP0737507A3/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/18—Mixing in containers to which motion is imparted to effect the mixing
    • B28C5/26—Mixing in containers to which motion is imparted to effect the mixing rotating about a vertical or steeply inclined axis during the mixing, e.g. comprising a flat bottomplate rotating about a vertical axis, co-operating with blades or stirrers
    • B28C5/32—Mixing in containers to which motion is imparted to effect the mixing rotating about a vertical or steeply inclined axis during the mixing, e.g. comprising a flat bottomplate rotating about a vertical axis, co-operating with blades or stirrers with driven stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F29/00—Mixers with rotating receptacles
    • B01F29/80—Mixers with rotating receptacles rotating about a substantially vertical axis
    • B01F29/84—Mixers with rotating receptacles rotating about a substantially vertical axis with propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F29/00—Mixers with rotating receptacles
    • B01F29/80—Mixers with rotating receptacles rotating about a substantially vertical axis
    • B01F29/85—Mixers with rotating receptacles rotating about a substantially vertical axis with helices, e.g. rotating about an inclined axis

Definitions

  • the invention relates to a rotating bowl mixer. More in particular, the invention relates to a conical mixer with screw and rotating tank. Such a mixer is intended for mixing dry products pulverulent or granular, possibly incorporating liquid for humidification or dough formation.
  • This orbital movement is obtained by a central or lateral motorization (single or double) and allows, hand, a rotational movement of the Archimedes screw around the axis of the tank along the internal circumference of the conical tank positioning the screw successively tangentially to each generator of the cone, and on the other hand, an axial rotation of the screw on itself allowing to move the powdered product from bottom to top and to realize thus mixing.
  • a first drive device provides a slow rotational movement around the axis of the conical tank;
  • a second drive device allows, generally via a pinion transmission conical implanted in the support arm of the screw, to obtain rotation axial of the coil on itself.
  • the Archimedes screw is carried by a mounted cover rotatable along the axis of the conical tank.
  • a first motor drives the cover rotating around the axis of the tank, a second motor carried by the cover rotates the screw along its axis.
  • a difficulty is to ensure the electrical supply of the motor mobile mounted on the cover. Knowing that such mixers are intended to be used for mixing powdery products, understands that the means of transmitting electrical energy must operate in an atmosphere laden with dust or powder, so that sliding contact power supplies are subjected to harsh test and present significant risks of defects, in addition to are complex and require protective devices.
  • a first object of the present invention is to provide a mixer which overcomes the disadvantages or limits of those known to the state of technique.
  • Another object of the present invention is to provide a mixer with mechanical drive characteristics of simple constitution, and therefore reliable.
  • Another object of the present invention is to provide a mixer in which a combination of different rotational movements producing a multidirectional effect applied to the entire moving mass, allowing very good homogenization and perfect dispersion of the particles of product.
  • the connecting element includes a ball crown fixed to the tank in a plane generally perpendicular to the axis of the tank, carried by a horizontal bearing integral with the chassis and on which come to bear balls of the ball crown.
  • the rotary drive means may include a toothed crown secured to the conical tank, and a second element integral with the chassis and rotated.
  • the ring gear can advantageously be a ring gear, acting both as a connecting element and as a rotational drive.
  • the invention also relates to a mixer comprising combination of the features mentioned above and described below.
  • FIG. 1 represents a conical mixer with an Archimedes screw and with rotating tank. Such a mixer is intended for mixing products dry powdery or granulated, with possible incorporation of liquid for humidification or paste formation.
  • the mixer comprises a conical tank 1 provided in its part upper part of a cover 2 and having at its lower part a drain hatch 3.
  • the cover 2 is provided with a number orifices intended for example to allow the supply of the tank with products to be mixed, when passing a sprinkler pump, when passing a or more mixing screws, when passing one or more special tools intended to improve the dispersion and homogenization of the mass to mix etc.
  • FIG. 1 a single mixing screw 4, driven in axial rotation by a first gear motor 5, and oriented tangentially to a generator of the conical tank wall 1 for stay permanently near the inside of the tank.
  • the mixer according to the invention comprises at least a first mixing screw 4 and a second mixing screw 104.
  • the first screw mixture 4, driven in axial rotation is oriented tangentially to a generator of the tank wall 1 to remain permanently at close to the inner face of tank 1, and may have a turn net having a pitch, i.e. the distance separating two turns consecutive, variable.
  • the net of the turn of the first mixing screw 4 has a number of steps of a dimension x and a number of steps of dimension y with x greater to y.
  • the second mixing screw 104 may include a turn thread having the same configuration, except that the steps of an x dimension of the first mixing screw 4 are opposite the steps of dimension y of the second mixing screw 104 and vice versa.
  • the difference in speed displacement of the powdered product caused by differences in dimension of the steps of the turns makes it possible to obtain in the product messy, multi-directional movements that speed up and improve the speed and quality of the mixture.
  • the second mixing screw 104 driven in axial rotation, is oriented obliquely and further away from the tank wall 1, placed at the heart, for stir the central part of the product to be mixed.
  • a lump-disperser tool 204 consisting of a motor driving a propeller shaft oriented vertically along the vertical axis 20 of the tank 1.
  • the mixer according to the invention comprises a first set held fixed relative to a vertical axis 20 and a second set provided with a rotational movement relative to the same vertical axis 20.
  • the first set is held fixed by attachment to a frame 6 'associated with a support 7 of the mixer.
  • This first set includes the cover 2 of the tank 1 on which are fixed the tools mixing such as the first mixing screw 4, the second mixing screw 104, the lump-disperser tool 204.
  • the first mixing screw 4 is fixed on the cover 2 so that its axis of rotation 18 is parallel to the wall of the conical tank 1 and that the free end of its whorl is flush with the drain hatch 3.
  • This characteristic is possible due to the use, in the mixer of the invention, of a valve with guillotine 14 manually or mechanically operated as a means of closing off the drain flap 3.
  • This knife gate valve 14 is fixed to the support 7 of the mixer.
  • a ball valve can also be used.
  • sealing means constituted in particular by a seal 19 inserted between the body 21 of the knife gate valve 14 and a rotating flange 15.
  • The: rotating flange 15 is integral with the tank 1, and vertically carries the central part 24 of the valve body 21 in allowing the relative rotation between the rotating flange 15 and the body 21 valve via a ring 22 of non-stick material such that polytetrafluoroethylene, in the embodiment of FIG. 3, or of a ball crown 23 in the embodiment of FIG. 4.
  • the valve body 21 is locked in rotation by the support 7 of the mixer, to which it is fixed by its offset part 25.
  • the cover 2 of the conical tank 1 and the chassis 6 are in one piece but it should be understood that such realization can be replaced by another, since the cover 2 is kept fixed relative to the vertical axis 20.
  • the second set animated by a rotational movement relative to the vertical axis 20 includes in particular the conical tank 1.
  • the rotation of the tank 1 is obtained by a first element 8 secured to the tank conical 1 and movable relative to the chassis 6, a second element 9 which is integral with the chassis 6 and which is rotated, and finally a connecting element 10 interposed between the tank 1 and the chassis 6.
  • the element link 10 is adapted to carry the tank 1 and allow its rotation along its axis 20.
  • the connecting element 10 comprises the first element 8 and elements 10a and 10b.
  • the first element 8 is a toothed crown with balls which is fixed to the tank 1 along a plane generally perpendicular to the axis 20 of the tank 1.
  • This toothed ring 8 constitutes the movable frame of a ball bearing and is carried by a horizontal track 10b integral with the chassis 6 constituting the fixed frame of the bearing and on which come to roll the balls 10a of the ring gear 8.
  • Such a connecting element 10 with a toothed crown 8 will be mainly used in small capacity mixers.
  • the ball crown 8 can be replaced by a raceway with guidance by several bearings allowing ensure rotation guidance and recovery of the vertical load.
  • the second element 9, which comes in reciprocal cooperation with the ring gear 8, comprises at least one gear wheel and / or at least one pinion having an axis of rotation 16 parallel to the axis 20 of the tank 1.
  • This second element 9, consisting of a gear system, is driven in rotation by a second geared motor 11 fixed on the chassis 6 or the support 7 of the mixer.
  • the gear system can be of the type helical, cylindrical, conical or equivalent. Alternatively, depending on the size of the mixer, we can ensure a rotational drive by sprockets, wheels and chains.
  • a seal 13 arranged all along the upper circumference of the conical tank 1.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Accessories For Mixers (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
  • Food-Manufacturing Devices (AREA)
  • Processing Of Solid Wastes (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The mixer has a conical vessel (1) with a vertical axis (20), a top cover (2) and a shuttered outlet (3) at the bottom. The mixing implement (4) can be in the form of a screw connected to a motor and redn. gear unit (5), and the vessel is contained within a frame (6) of supports (7). The vessel is supported by a coupling element (10) between it and the frame, designed to allow the vessel to rotate inside the frame about its axis when driven by a motor (11). The coupling element comprises a ball ring supported by the frame and carrying a gear (8) meshing with the motor's driving gear (9).

Description

L'invention concerne un mélangeur à cuve tournante. Plus particulièrement, l'invention concerne un mélangeur conique à vis et à cuve tournante. Un tel mélangeur est destiné au mélange de produits secs pulvérulents ou granulés, avec éventuellement incorporation de liquide pour l'humidification ou la formation de pâte.The invention relates to a rotating bowl mixer. More in particular, the invention relates to a conical mixer with screw and rotating tank. Such a mixer is intended for mixing dry products pulverulent or granular, possibly incorporating liquid for humidification or dough formation.

On connaít déjà notamment par les documents DE-A-36 38 972, DE-A-29 14 307 et DE-A-29 02 570, des mélangeurs à cuve conique et à vis d'Archimède. Ce type de mélangeur comprend une cuve conique fixe recevant le produit à mélanger (poudre ou produit pâteux). Le mélange des divers composants s'effectue par une vis d'Archimède (spire montée sur un tube support) à mouvement orbital. Ce mouvement orbital est obtenu par une motorisation centrale ou latérale (simple ou double) et permet, d'une part, un déplacement en rotation de la vis d'Archimède autour de l'axe de la cuve le long de la circonférence interne de la cuve conique positionnant la vis successivement tangentiellement à chaque génératrice du cône, et d'autre part, une rotation axiale de la vis sur elle-même permettant de déplacer le produit en poudre de bas en haut et de réaliser ainsi le mélange.We already know in particular from documents DE-A-36 38 972, DE-A-29 14 307 and DE-A-29 02 570, conical bowl and screw mixers Archimedes. This type of mixer includes a fixed conical tank receiving the product to be mixed (powder or pasty product). The mixture of diverse components is carried out by an Archimedes screw (turn mounted on a tube support) with orbital motion. This orbital movement is obtained by a central or lateral motorization (single or double) and allows, hand, a rotational movement of the Archimedes screw around the axis of the tank along the internal circumference of the conical tank positioning the screw successively tangentially to each generator of the cone, and on the other hand, an axial rotation of the screw on itself allowing to move the powdered product from bottom to top and to realize thus mixing.

La mécanique de ces entraínements est complexe : un premier dispositif d'entraínement permet d'obtenir un mouvement de rotation lente autour de l'axe de la cuve conique ; un second dispositif d'entraínement permet, généralement par l'intermédiaire d'une transmission à pignon conique implantée dans le bras support de la vis, d'obtenir la rotation axiale de la spire sur elle-même.The mechanics of these drives are complex: a first drive device provides a slow rotational movement around the axis of the conical tank; a second drive device allows, generally via a pinion transmission conical implanted in the support arm of the screw, to obtain rotation axial of the coil on itself.

Dans chacun des trois documents DE-A-36 38 972, DE-A-29 14 307 et DE-A-29 02 570, la vis d'Archimède est portée par un couvercle monté rotatif selon l'axe de la cuve conique. Un premier moteur entraíne le couvercle en rotation autour de l'axe de la cuve, un second moteur porté par le couvercle entraíne en rotation la vis selon son axe.In each of the three documents DE-A-36 38 972, DE-A-29 14 307 and DE-A-29 02 570, the Archimedes screw is carried by a mounted cover rotatable along the axis of the conical tank. A first motor drives the cover rotating around the axis of the tank, a second motor carried by the cover rotates the screw along its axis.

Une difficulté est d'assurer l'alimentation électrique du moteur mobile monté sur le couvercle. Sachant que de tels mélangeurs sont destinés à être utilisés pour mélanger des produits pulvérulents, on comprend que les moyens de transmission d'énergie électrique doivent fonctionner dans une atmosphère chargée de poussière ou de poudre, de sorte que des alimentations à contact glissant sont soumises à rude épreuve et présentent des risques importants de défauts, outre qu'elles sont complexes et nécessitent des dispositifs de protection.A difficulty is to ensure the electrical supply of the motor mobile mounted on the cover. Knowing that such mixers are intended to be used for mixing powdery products, understands that the means of transmitting electrical energy must operate in an atmosphere laden with dust or powder, so that sliding contact power supplies are subjected to harsh test and present significant risks of defects, in addition to are complex and require protective devices.

En outre, avec les mélangeurs connus, il s'avère particulièrement délicat et onéreux de multiplier les vis ou autres dispositifs de mélange, qui sont tous des dispositifs entraínés en rotation autour de l'axe de la cuve.In addition, with known mixers, it turns out particularly delicate and expensive to multiply the screws or other mixing devices, all of which are driven devices rotation around the axis of the tank.

Un premier objet de la présente invention est de proposer un mélangeur qui pallie les inconvénients ou limites de ceux connus de l'état de la technique.A first object of the present invention is to provide a mixer which overcomes the disadvantages or limits of those known to the state of technique.

Un autre objet de la présente invention est de proposer un mélangeur dont les caractéristiques mécaniques d'entraínement soient de constitution simple, et donc fiable.Another object of the present invention is to provide a mixer with mechanical drive characteristics of simple constitution, and therefore reliable.

Un autre objet, de la présente invention est de proposer un mélangeur dans lequel'on peut assurer à faible coût une combinaison de mouvements de rotation différents produisant un effet multidirectionnel appliqué à l'intégralité de la masse en mouvement, permettant ainsi une très bonne homogénéisation et une parfaite dispersion des particules de produit.Another object of the present invention is to provide a mixer in which a combination of different rotational movements producing a multidirectional effect applied to the entire moving mass, allowing very good homogenization and perfect dispersion of the particles of product.

A cet effet, l'invention propose un mélangeur comportant une cuve conique d'axe sensiblement vertical, fermée dans sa partie supérieure par un couvercle et présentant à sa partie inférieure une trappe de vidange, le couvercle portant au moins un outil de mélange tel qu'une vis de mélange et un premier motoréducteur, pour entraíner en rotation axiale la vis de mélange, le mélangeur comportant en outre un châssis associé à un support ; selon l'invention :

  • la cuve est portée par un élément de liaison interposé entre la cuve et le châssis et adapté pour autoriser la rotation de la cuve par rapport au châssis autour de son axe,
  • la cuve est entraínée en rotation par des moyens d'entraínement en rotation,
  • le couvercle et les outils de mélange qu'il porte sont montés fixes sur le châssis.
To this end, the invention provides a mixer comprising a conical tank with a substantially vertical axis, closed in its upper part by a cover and having at its lower part a drain flap, the cover carrying at least one mixing tool such as 'a mixing screw and a first gear motor, to drive the mixing screw in axial rotation, the mixer further comprising a frame associated with a support; according to the invention:
  • the tank is carried by a connecting element interposed between the tank and the chassis and adapted to allow the rotation of the tank relative to the chassis around its axis,
  • the tank is rotated by means of rotational drive,
  • the cover and the mixing tools that it carries are fixedly mounted on the chassis.

Selon un mode de réalisation avantageux, l'élément de liaison comprend une couronne à billes fixée sur la cuve selon un plan généralement perpendiculaire à l'axe de la cuve, portée par un chemin de roulement horizontal solidaire du châssis et sur lequel viennent porter des billes de la couronne à billes.According to an advantageous embodiment, the connecting element includes a ball crown fixed to the tank in a plane generally perpendicular to the axis of the tank, carried by a horizontal bearing integral with the chassis and on which come to bear balls of the ball crown.

Les moyens d'entraínement en rotation peuvent comprendre une couronne dentée solidaire de la cuve conique, et un second élément solidaire du châssis et entraíné en rotation.The rotary drive means may include a toothed crown secured to the conical tank, and a second element integral with the chassis and rotated.

Dans ce cas, la couronne dentée peut avantageusement être une couronne dentée à billes, agissant à la fois comme élément de liaison et comme moyen d'entraínement en rotation.In this case, the ring gear can advantageously be a ring gear, acting both as a connecting element and as a rotational drive.

L'invention concerne également un mélangeur comportant en combinaison les caractéristiques susmentionnées et décrites ci-après.The invention also relates to a mixer comprising combination of the features mentioned above and described below.

D'autres caractéristiques et avantages de la présente invention apparaítront clairement à la lecture de la description suivante qui se réfère aux figures annexées qui représentent des modes de réalisation préférentiels de l'invention et dans lesquelles :

  • la figure 1 est une vue schématique générale, de côté, d'un mélangeur selon un mode de réalisation conforme à l'invention ;
  • la figure 2 est une vue de face d'un mélangeur selon un autre mode de réalisation conforme à l'invention, sur lequel sont implantés plusieurs outils de brassage ;
  • la figure 3 est une vue partielle de face en coupe, illustrant un mode de réalisation des moyens de tenue de la trappe de vidange ; et
  • la figure 4 est une vue partielle de face en coupe, illustrant un autre mode de réalisation des moyens de tenue de la trappe de vidange.
Other characteristics and advantages of the present invention will become clear on reading the following description which refers to the appended figures which represent preferred embodiments of the invention and in which:
  • Figure 1 is a general schematic view, from the side, of a mixer according to an embodiment according to the invention;
  • Figure 2 is a front view of a mixer according to another embodiment according to the invention, on which are implanted several brewing tools;
  • Figure 3 is a partial front view in section, illustrating an embodiment of the holding means of the drain flap; and
  • Figure 4 is a partial front view in section, illustrating another embodiment of the holding means of the drain flap.

La figure 1 représente un mélangeur conique à vis d'Archimède et à cuve tournante. Un tel mélangeur est destiné au mélange des produits secs pulvérulents ou granulés, avec éventuellement incorporation de liquide pour l'humidification ou la formation de pâte.FIG. 1 represents a conical mixer with an Archimedes screw and with rotating tank. Such a mixer is intended for mixing products dry powdery or granulated, with possible incorporation of liquid for humidification or paste formation.

Le mélangeur comprend une cuve conique 1 munie dans sa partie supérieure d'un couvercle 2 et présentant à sa partie inférieure une trappe de vidange 3. Le couvercle 2 est muni d'un certain nombre d'orifices destinés par exemple à permettre l'alimentation de la cuve en produits à mélanger, au passage d'une pompe d'arrosage, au passage d'une ou plusieurs vis de mélange, au passage d'un ou plusieurs outils spéciaux destinés à améliorer la dispersion et l'homogénéisation de la masse à mélanger etc.The mixer comprises a conical tank 1 provided in its part upper part of a cover 2 and having at its lower part a drain hatch 3. The cover 2 is provided with a number orifices intended for example to allow the supply of the tank with products to be mixed, when passing a sprinkler pump, when passing a or more mixing screws, when passing one or more special tools intended to improve the dispersion and homogenization of the mass to mix etc.

Sur la figure 1 est représentée une seule vis de mélange 4, entraínée en rotation axiale par un premier motoréducteur 5, et orientée tangentiellement à une génératrice de la paroi de cuve conique 1 pour rester en permanence à proximité de la face intérieure de cuve. La structure particulière du mélangeur selon l'invention permet d'adapter aisément et à faible coût une pluralité d'outils de mélange ou de brassage. Par exemple, dans le mode de réalisation de la figure 2, le mélangeur selon l'invention comporte au moins une première vis de mélange 4 et une deuxième vis de mélange 104. Dans ce dernier cas, la première vis de mélange 4, entraínée en rotation axiale, est orientée tangentiellement à une génératrice de la paroi de cuve 1 pour rester en permanence à proximité de la face intérieure de cuve 1, et peut avoir un filet de spire présentant un pas, c'est-à-dire la distance séparant deux spires consécutives, variable. En d'autres termes, le filet de la spire de la première vis de mélange 4 présente un certain nombre de pas d'une dimension x et un certain nombre de pas d'une dimension y avec x supérieur à y. La deuxième vis de mélange 104 peut comporter un filet de spire présentant la même configuration, sauf que les pas d'une dimension x de la première vis de mélange 4 sont en regard des pas d'une dimension y de la deuxième vis de mélange 104 et, réciproquement. La différence de vitesse de déplacement du produit pulvérulent provoquée par les différences de dimension des pas des spires permet d'obtenir dans le produit des mouvements désordonnés et pluri-directionnels qui accélèrent et améliorent la vitesse et la qualité du mélange.In FIG. 1 is shown a single mixing screw 4, driven in axial rotation by a first gear motor 5, and oriented tangentially to a generator of the conical tank wall 1 for stay permanently near the inside of the tank. The particular structure of the mixer according to the invention makes it possible to adapt easily and inexpensively a plurality of mixing or mixing tools brewing. For example, in the embodiment of Figure 2, the mixer according to the invention comprises at least a first mixing screw 4 and a second mixing screw 104. In the latter case, the first screw mixture 4, driven in axial rotation, is oriented tangentially to a generator of the tank wall 1 to remain permanently at close to the inner face of tank 1, and may have a turn net having a pitch, i.e. the distance separating two turns consecutive, variable. In other words, the net of the turn of the first mixing screw 4 has a number of steps of a dimension x and a number of steps of dimension y with x greater to y. The second mixing screw 104 may include a turn thread having the same configuration, except that the steps of an x dimension of the first mixing screw 4 are opposite the steps of dimension y of the second mixing screw 104 and vice versa. The difference in speed displacement of the powdered product caused by differences in dimension of the steps of the turns makes it possible to obtain in the product messy, multi-directional movements that speed up and improve the speed and quality of the mixture.

Egalement, pour augmenter l'effet de brassage désordonné, la seconde vis de mélange 104, entraínée en rotation axiale, est orientée obliquement et plus écartée de la paroi de cuve 1, placée à coeur, pour brasser la partie centrale du produit à mélanger.Also, to increase the disordered stirring effect, the second mixing screw 104, driven in axial rotation, is oriented obliquely and further away from the tank wall 1, placed at the heart, for stir the central part of the product to be mixed.

Dans le mode de réalisation de la figure 2, on a également prévu un outil émotteur-disperseur 204, constitué d'un moteur entraínant un arbre à hélice orienté verticalement selon l'axe vertical 20 de la cuve 1.In the embodiment of FIG. 2, provision has also been made a lump-disperser tool 204, consisting of a motor driving a propeller shaft oriented vertically along the vertical axis 20 of the tank 1.

Le mélangeur conforme à l'invention comprend un premier ensemble maintenu fixe par rapport à un axe vertical 20 et un second ensemble pourvu d'un mouvement de rotation par rapport au même axe vertical 20.The mixer according to the invention comprises a first set held fixed relative to a vertical axis 20 and a second set provided with a rotational movement relative to the same vertical axis 20.

Le premier ensemble est maintenu fixe par solidarisation à un châssis 6 'associé à un support 7 du mélangeur. Ce premier ensemble comprend le couvercle 2 de la cuve 1 sur lequel sont fixés les outils de mélange tels que la première vis de mélange 4, la seconde vis de mélange 104, l'outil émotteur-disperseur 204. La première vis de mélange 4 est fixée sur le couvercle 2 de manière que son axe de rotation 18 soit parallèle à la paroi de la cuve conique 1 et que l'extrémité libre de sa spire affleure la trappe de vidange 3. Cette caractéristique est possible du fait de l'utilisation, dans le mélangeur de l'invention, d'une vanne à guillotine 14 à commande manuelle ou mécanisée comme moyen d'obturation de la trappe de vidange 3. Cette vanne à guillotine 14 est fixée sur le support 7 du mélangeur. Une vanne à boule peut être utilisée également.The first set is held fixed by attachment to a frame 6 'associated with a support 7 of the mixer. This first set includes the cover 2 of the tank 1 on which are fixed the tools mixing such as the first mixing screw 4, the second mixing screw 104, the lump-disperser tool 204. The first mixing screw 4 is fixed on the cover 2 so that its axis of rotation 18 is parallel to the wall of the conical tank 1 and that the free end of its whorl is flush with the drain hatch 3. This characteristic is possible due to the use, in the mixer of the invention, of a valve with guillotine 14 manually or mechanically operated as a means of closing off the drain flap 3. This knife gate valve 14 is fixed to the support 7 of the mixer. A ball valve can also be used.

Pour assurer l'étanchéité entre la base de la cuve 1 et la vanne à guillotine 14 sont prévus des moyens d'étanchéité constitués notamment par un joint 19 inséré entre le corps 21 de vanne à guillotine 14 et une bride tournante 15. La:bride tournante 15 est solidaire de la cuve 1, et porte verticalement la partie centrale 24 du corps 21 de vanne en autorisant la rotation relative entre la bride tournante 15 et le corps 21 de vanne par l'intermédiaire d'une couronne 22 de matériau antiadhésif tel que le polytétrafluoroéthylène, dans la réalisation de la figure 3, ou d'une couronne à billes 23 dans la réalisation de la figure 4. Dans les deux cas, le corps 21 de vanne est bloqué en rotation par le support 7 du mélangeur, auquel il est fixé par sa partie déportée 25.To seal between the base of tank 1 and the valve guillotine 14 are provided sealing means constituted in particular by a seal 19 inserted between the body 21 of the knife gate valve 14 and a rotating flange 15. The: rotating flange 15 is integral with the tank 1, and vertically carries the central part 24 of the valve body 21 in allowing the relative rotation between the rotating flange 15 and the body 21 valve via a ring 22 of non-stick material such that polytetrafluoroethylene, in the embodiment of FIG. 3, or of a ball crown 23 in the embodiment of FIG. 4. In the two cases, the valve body 21 is locked in rotation by the support 7 of the mixer, to which it is fixed by its offset part 25.

Sur les figures, le couvercle 2 de la cuve conique 1 et le châssis 6 sont d'un seul tenant mais il doit être entendu qu'une telle réalisation peut être remplacée par une autre, dès lors que le couvercle 2 est maintenu fixe par rapport à l'axe vertical 20.In the figures, the cover 2 of the conical tank 1 and the chassis 6 are in one piece but it should be understood that such realization can be replaced by another, since the cover 2 is kept fixed relative to the vertical axis 20.

Le second ensemble animé d'un mouvement de rotation par rapport à l'axe vertical 20 comprend notamment la cuve conique 1. La rotation de la cuve 1 est obtenue par un premier élément 8 solidaire de la cuve conique 1 et mobile par rapport au châssis 6, un second élément 9 qui est solidaire du châssis 6 et qui est entraíné en rotation, et enfin un élément de liaison 10 interposé entre la cuve 1 et le châssis 6. L'élément de liaison 10 est adapté pour porter la cuve 1 et autoriser sa rotation selon son axe 20.The second set animated by a rotational movement relative to the vertical axis 20 includes in particular the conical tank 1. The rotation of the tank 1 is obtained by a first element 8 secured to the tank conical 1 and movable relative to the chassis 6, a second element 9 which is integral with the chassis 6 and which is rotated, and finally a connecting element 10 interposed between the tank 1 and the chassis 6. The element link 10 is adapted to carry the tank 1 and allow its rotation along its axis 20.

Dans le mode de réalisation représenté sur la figure 1, l'élément de liaison 10 comprend le premier élément 8 et des éléments 10a et 10b. Le premier élément 8 est une couronne dentée à billes qui est fixée sur la cuve 1 selon un plan généralement perpendiculaire à l'axe 20 de la cuve 1. Cette couronne dentée 8 constitue l'armature mobile d'un roulement à billes et est portée par un chemin de roulement 10b horizontal solidaire du châssis 6 constituant l'armature fixe du roulement et sur lequel viennent rouler les billes 10a de la couronne dentée à billes 8.In the embodiment shown in FIG. 1, the connecting element 10 comprises the first element 8 and elements 10a and 10b. The first element 8 is a toothed crown with balls which is fixed to the tank 1 along a plane generally perpendicular to the axis 20 of the tank 1. This toothed ring 8 constitutes the movable frame of a ball bearing and is carried by a horizontal track 10b integral with the chassis 6 constituting the fixed frame of the bearing and on which come to roll the balls 10a of the ring gear 8.

Un tel élément de liaison 10 à couronne dentée à billes 8 sera utilisé surtout dans les mélangeurs à petite capacité. Pour les mélangeurs à grande capacité, la couronne à billes 8 pourra être remplacée par un chemin de roulement avec guidage par plusieurs roulements permettant d'assurer un guidage en rotation et une reprise de la charge verticale.Such a connecting element 10 with a toothed crown 8 will be mainly used in small capacity mixers. For mixers at high capacity, the ball crown 8 can be replaced by a raceway with guidance by several bearings allowing ensure rotation guidance and recovery of the vertical load.

Le second élément 9, qui vient en coopération réciproque avec la couronne dentée 8, comprend au moins une roue dentée et/ou au moins un pignon ayant un axe de rotation 16 parallèle à l'axe 20 de la cuve 1. Ce second élément 9, constitué d'un système d'engrenage, est entraíné en rotation par un deuxième motoréducteur 11 fixé sur le châssis 6 ou le support 7 du mélangeur. Le système d'engrenage peut être de type hélicoïdal, cylindrique, conique ou équivalent. En alternative, selon la taille du mélangeur, on peut assurer un entraínement en rotation par pignons, roues et chaínes.The second element 9, which comes in reciprocal cooperation with the ring gear 8, comprises at least one gear wheel and / or at least one pinion having an axis of rotation 16 parallel to the axis 20 of the tank 1. This second element 9, consisting of a gear system, is driven in rotation by a second geared motor 11 fixed on the chassis 6 or the support 7 of the mixer. The gear system can be of the type helical, cylindrical, conical or equivalent. Alternatively, depending on the size of the mixer, we can ensure a rotational drive by sprockets, wheels and chains.

De tout ce qui précède; on comprend que la rotation du motoréducteur 11 entraíne via le système d'engrenage constitué par le pignon 9 et la couronne dentée 8 à roulements à billes, la rotation de la cuve 1 conique.From all of the above; we understand that the rotation of the geared motor 11 drives via the gear system constituted by the pinion 9 and gear ring 8 with ball bearings, the rotation of the tank 1 conical.

Pour assurer l'étanchéité entre la cuve 1 conique rotative et le couvercle 2 fixe est prévu selon l'invention, un joint d'étanchéité 13 disposé tout le long de la circonférence supérieure de la cuve 1 conique.To seal between the rotating conical tank 1 and the fixed cover 2 is provided according to the invention, a seal 13 arranged all along the upper circumference of the conical tank 1.

Claims (10)

  1. Mixer including a conical tank (1) having a substantially vertical axis (20), closed at its top by a lid (2) and having an exit door (3) at its bottom, the lid (2) carrying at least one mixer screw (4) and a first motor-gearbox (5) for rotating said at least one mixer screw (4) about its axis, said mixer further including a frame (6) associated with a support (7), characterized in that:
    the tank (1) is carried by a coupling member (10) disposed between the tank (1) and the frame (6) and adapted to allow rotation of the tank (1) relative to the frame (6) about its axis (20),
    the tank (1) is adapted to be rotated by rotary drive means (8, 9, 11),
    the lid (2) and said at least one mixer screw (4) that it carries are fixedly mounted on the frame (6).
  2. Mixer according to claim 1, characterized in that the coupling member (10) comprises a ball race (8) fixed to the tank (1) in a plane generally perpendicular to the axis (20) of the tank (1), carried by a horizontal rolling path (10b) attached to the frame (6) and on which the balls (10a) of the ball race (8) run.
  3. Mixer according to claim 1 or 2, characterized in that the rotary drive means (8, 9, 11) comprise a toothed ball race (8) attached to the conical tank (1), and a second member (9) attached to the frame (6) and adapted to be rotated.
  4. Mixer according to claims 2 and 3, characterized in that the toothed ball race (8) is a toothed ball race functioning simultaneously as coupling member and as rotary drive means.
  5. Mixer according to any one of claims 1 to 4, characterized in that the second member (9) comprises at least one toothed ring and/or at least one gear having a rotation axis (16) parallel to the axis (20) of the tank (1).
  6. Mixer according to any one of claims 1 to 5, characterized in that the second member (9) is rotated by a second motor-gearbox (11) fixed to the frame (6) or the mixer support (7).
  7. Mixer according to any one of claims 1 to 6 characterized in that the exit door (3) is closed by a guillotine valve (14).
  8. Mixer according to any one of claims 1 to 7 characterized in that it comprises between the base of the tank (1) and the guillotine valve (14) sealing means including notably a seal (19) inserted between the body (21) of the guillotine valve (14) and a rotary flange (15) attached to the tank (1), the rotary flange (15) carrying vertically the central part (24) of the body (21) of the valve by means of a race (22) of non-stick material or a ball race (23), the peripheral part (25) of the body (21) of the valve being fixed to the mixer support (7).
  9. Mixer according to any one of claims 1 to 8 characterized in that it comprises a seal (13) disposed between the rotary conical tank (1) and the fixed lid (2) all around the upper circumference of the conical tank (1).
  10. Mixer according to any one of claims 1 to 9, characterized in that the lid (2) carries at least a first mixer screw (4) rotatable about its axis, oriented tangentially to a generatrix of the tank wall (1) to remain at all times near the interior face of the tank (1), a second mixer screw (104) rotatable about its axis and oriented obliquely and farther from the tank wall (1), and a crusher-disperser tool (204) oriented vertically along the axis (20) of the tank (1).
EP96420101A 1995-03-29 1996-03-28 Mixer with a rotating tank Expired - Lifetime EP0737507B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9503710A FR2732238B1 (en) 1995-03-29 1995-03-29 ROTARY TANK MIXER
FR9503710 1995-03-29

Publications (3)

Publication Number Publication Date
EP0737507A2 EP0737507A2 (en) 1996-10-16
EP0737507A3 EP0737507A3 (en) 1996-10-23
EP0737507B1 true EP0737507B1 (en) 2002-06-12

Family

ID=9477554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96420101A Expired - Lifetime EP0737507B1 (en) 1995-03-29 1996-03-28 Mixer with a rotating tank

Country Status (6)

Country Link
EP (1) EP0737507B1 (en)
AT (1) ATE218919T1 (en)
DE (1) DE69621693T2 (en)
DK (1) DK0737507T3 (en)
ES (1) ES2177749T3 (en)
FR (1) FR2732238B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2577801A (en) * 1999-12-20 2001-07-03 Gleason Works, The Compound mixer and filter for lapping machine
US7217029B2 (en) * 2004-02-26 2007-05-15 Hognon Sa Mixer with lump breaker having multiple axes of rotation
FR3000906B1 (en) * 2013-01-15 2015-03-06 Skako Concrete CONICAL CONVEYOR TANK MIXER
CN109499405A (en) * 2018-12-29 2019-03-22 重庆医药高等专科学校 The emulsification mechanism of liposome

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH637033A5 (en) * 1978-12-22 1983-07-15 Baumgartner Rolf Ag CONE SCREW MIXER.
DE2914307A1 (en) * 1979-02-28 1981-01-15 Rolf Baumgartner Conical mixer with rotating screw - having mixture outlet with full bore ball valve to allow both rapid and controlled rate emptying of mixer
DE3309041A1 (en) * 1982-05-17 1984-09-27 Heinz Eichholz MIXER FOR DIFFICULTY FLOWING SHUBLE GOODS
DE3638972A1 (en) * 1986-11-14 1988-05-26 Kate Kemper Dough-cutting and circular plaiting machine with a dough-feeding device

Also Published As

Publication number Publication date
EP0737507A3 (en) 1996-10-23
DK0737507T3 (en) 2002-10-07
DE69621693D1 (en) 2002-07-18
ES2177749T3 (en) 2002-12-16
FR2732238A1 (en) 1996-10-04
ATE218919T1 (en) 2002-06-15
EP0737507A2 (en) 1996-10-16
FR2732238B1 (en) 1997-05-09
DE69621693T2 (en) 2003-01-30

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