EP3552788B1 - Mixing apparatus for wet or dry materials, in particular components for manufacturing concrete - Google Patents

Mixing apparatus for wet or dry materials, in particular components for manufacturing concrete Download PDF

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Publication number
EP3552788B1
EP3552788B1 EP19165308.8A EP19165308A EP3552788B1 EP 3552788 B1 EP3552788 B1 EP 3552788B1 EP 19165308 A EP19165308 A EP 19165308A EP 3552788 B1 EP3552788 B1 EP 3552788B1
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EP
European Patent Office
Prior art keywords
mixing
train
diameter
tank
drive shaft
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EP19165308.8A
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German (de)
French (fr)
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EP3552788A1 (en
Inventor
Jens AALBORG NIELSEN
Eric Brunquet
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Skako Concrete AS
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Skako Concrete AS
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    • 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
    • B28C5/10—Mixing in containers not actuated to effect the mixing
    • B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
    • B28C5/16—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a vertical or steeply inclined axis
    • B28C5/166—Pan-type mixers
    • B28C5/168—Pan-type mixers with stirrers having planetary motion
    • 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
    • B01F27/95—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis
    • 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
    • B28C5/0806—Details; Accessories
    • B28C5/0818—Charging or discharging gates or chutes; Sealing means

Definitions

  • the present invention relates to an apparatus for mixing wet or dry materials, in particular components for the manufacture of concrete.
  • the field of the invention is that of devices for mixing wet or dry materials, and in particular of the various components used during the manufacture of concrete, and more particularly on concrete production sites, known under the name of concrete factories. concrete.
  • such an apparatus generally comprises a tank, the size of which may be up to several m 3 .
  • Said tank receives the various materials to be mixed, such as for example the various components of concrete, such as cement, water, sand, aggregates and various additives, which are mixed and mixed so as to form a homogeneous pasty mixture which can then be used on any type of site.
  • Mixing blades driven in rotation with respect to the tank are used in order to achieve the mixing and mixing of the raw concrete materials.
  • the invention relates more particularly to the field of mixers with a fixed tank and an epicyclic train for which the mixing blades are driven along epicyclic paths.
  • a fixed-tank mixing apparatus comprising a fixed tank into which the various components to be mixed are introduced, a mixing train comprising blades driven in an epicyclic movement by a motor member.
  • the mixing train drive device comprises a motor member, fixed, driving a rotary plate via a ring integral with the outer diameter of the plate.
  • the rotating plate serves as a support for the mixing train, said mixing train being articulated in rotation on the plate.
  • the mixing train has, on its drive shaft, a receiving pinion which meshes around a fixed ring gear so as to be rotated relative to the rotary plate.
  • the rotary plate and the fixed crown are coaxial and leave a large central clearance in their center.
  • a central, fixed supply duct crosses this central clearance and allows wide access to the center of the tank, in particular allowing the loading of materials.
  • a mixing train generally comprises at least one arm, at each end of which is fixed a blade, said arm extending perpendicular to the drive shaft of the mixing train, and conventionally centered on said shaft. training.
  • the drive shafts of the various mixing trains are designed to be rotated by a single drive ring gear, and conventionally by means of identical pinions.
  • these different drive shafts will have angular drive speeds relative to the same tank, the angular speed of rotation of each mixing train relative to its drive shaft depending on the ratio between the number of teeth. of its receiving pinion and that of the fixed wheel.
  • the mixing blades fixed to the two ends of the arm of each mixing train, will have a linear speed, which will vary continuously, which allows the mixing by differential stretching of the mixture of the different materials.
  • the mixing trains are driven in rotation about their axis, in the same direction of rotation as the turntable, which makes it possible to maximize the maximum linear speed of said blade.
  • the linear speed of each blade must be such that it does not exceed a certain value, so as not to cause a degradation of the efficiency of the mixture, by segregation and projection, as well as accelerated wear, and that it is not less than a certain value, which would also affect its effectiveness.
  • the dimension of the arms supporting the mixing blades must be such that at least the blades of a mixing train pass through the center of the tank and through the peripheral zone of the tank, which receives the majority of the mixture, without the blades of the various mixing trains coming into collision, during the operation of said mixing apparatus. For this purpose, mixing trains with arms of different lengths can be provided.
  • Such a mixer 1 ' is shown schematically in the figure 1 of the present application.
  • a single mixing train 3 ' has its blades 34'. passing through the center A 'of the tank 2' and that the other mixing trains 4 'have their blades 44' passing at the level of the periphery 21 'of the tank 2'.
  • two pinions 45 ', 46' are interposed between said circular crown 6 'and said drive pinion 42' of the offset mixing trains 4 ', not passing through the center A' of the tank 2 '.
  • the blades 44 of the offset mixing trains 4 ' travel a circular path T4' of diameter D4 ', less than the diameter D3' of the circular path T3 'traveled by the blades 34 of the first mixing train 3.
  • the angular drive speeds of the different mixing trains 3 ', 4' remain identical if their drive pinions 32 ', 42' are, which is the case in the device described in the document WO 9 511 120 A .
  • the maximum linear speed of the blades 34 of the first mixing train 3 is 3.71 m / s
  • the maximum linear speed of the blades 44 of each of the second mixing trains 4 is 3.59 m / s.
  • the average maximum linear speed of the blades is also 3.63 m / s.
  • said ring being intended to be optionally disposed around a supply duct of the tank, provision will have to be made to also reduce the diameter of said duct, which can prove to be problematic for ensuring the supply of the tank. optimally.
  • the maximum linear speed of the blades of the mixing trains in the offset position is limited by this design. Such a limitation affects the general mixing performance, in particular when there are a number of mixing trains in the offset position (ie two, three) and their mixing action thus becomes predominant.
  • the document DE 10 2014 008 067 A1 discloses an apparatus for mixing wet and dry materials according to the preamble of claim 1.
  • the invention proposes to overcome these drawbacks by providing an apparatus for mixing wet or dry materials, in particular components for the manufacture of concrete making it possible to ensure a homogeneous mixture of materials, of simple design and of reduced production cost, and in particular in the case where said mixing apparatus is provided for mixing a large quantity of materials.
  • the invention also makes it possible to use a feed duct centered on the axis of the fixed tank, of dimensions such as to allow optimum feeding of said tank.
  • the pinion fixed on the drive shaft of the first mixing train engages with the first circular ring gear
  • the pinion fixed on the drive shaft of at least one second mixing train engages with the second circular crown
  • the mixing apparatus 1 will be considered in the normal operating position, that is to say placed on the ground. Spatial references, such as “above”, “below”, are considered in such a position, unless specified.
  • the at least one second mixing train 4 can be located in a position offset from the first mixing train 3, without using intermediate gears, which simplifies the design of said device. mixing 1 and reduces its cost price.
  • the angular drive speed of the drive shaft 41 of the at least one second mixing train 4 will be greater than the angular speed of drive of the drive shaft 31 of the first mixing train 3, while their respective pinions 32, 42 may remain identical.
  • the linear speeds at each of the at least one blade 34, 44 of each of the mixing trains 3, 4 are such that the mixing of the materials is optimal so as to obtain a homogeneous concrete.
  • the maximum linear speeds of the blades 34, 44 can be substantially identical, or similar, which allows optimal mixing of the materials in the tank 2.
  • the maximum linear speed of the at least one blade 44 of each second mixing train 4 may be greater than the maximum linear speed of the at least one blade of the first mixing train 3, which is particularly advantageous, in that the mixing action of said second mixing trains is preponderant.
  • the maximum linear speed of each of the blades 44 of the second mixing trains is around 3.8 m / s while the maximum linear speed of the blades 34 of the first mixing train 3 is around 3.5 m / s. .
  • the average maximum linear speed is then 3.72 m / s.
  • the rotary plate 5 is driven in rotation by means of a plurality of geared motors 51, distributed evenly around the rotary plate, each comprising for example a pinion 52 mounted on their drive shaft, said pinion 52 coming into mesh with a circular toothed ring 53 fixed to the turntable 5.
  • geared motors 51 distributed evenly around the rotary plate, each comprising for example a pinion 52 mounted on their drive shaft, said pinion 52 coming into mesh with a circular toothed ring 53 fixed to the turntable 5.
  • all or part of the blades 34, 44 of the mixing trains 3, 4 can be replaced by other rotating elements involved in the mixing of the concrete, such as for example a concrete propeller or also a rapid dispersive effect tool 48, also known under the name of Wirbler in English or Wirbel in German.
  • such a rapid tool with a dispersive effect 48 can advantageously be positioned at the level of a second mixing train 4, sized so as to be propelled at a linear speed of between 5 and 10 m / s, depending on the size of the particles present in tank 2 and the viscosity of the materials.
  • a dispersive effect tool 48 has a crushing effect by impact on the materials present in the tank 2, which combined with the differential stretching effected by the blades 34, 44 of the mixing trains 3, 4, makes it possible to optimize the mixing of materials in the tank 2.
  • this rapid dispersive effect tool 48 at the level of a second mixing train 4, the pinion 42 of which engages with the second circular ring 7 advantageously makes it possible to act on the particles of the materials in the tank 2 near the periphery 22 of said tank 2, which will end up wedged against the periphery 22 of the tank 2 by such a rapid tool with a dispersive effect 48, which can thus break the nodules of fine particles of materials.
  • the mixing apparatus 1 comprises a supply duct 21 arranged above the tank 2, centered on the axis A of the tank 2.
  • the first ring 6 and the second ring 7 are positioned around the supply duct 21 and their respective diameter D6, D7 is strictly greater than the diameter D21 of said supply duct 21, so as not to obstruct the passage through through the supply duct 21, which can thus retain a dimension such as to allow optimum supply of said fixed tank 2.
  • the rotary plate 5 may have a central bore 51, of diameter strictly greater than the diameter D21 of the supply duct.
  • the first mixing train 3 comprises an arm 33 of length L33, arranged perpendicular to the drive shaft 32, centered on said drive shaft 32, two blades 34 being fixed at each end.
  • the second mixing train 4 comprises an arm 43 of length L43, arranged perpendicular to the drive shaft 42, centered on said drive shaft 42, two blades 44 being fixed at each end of the arm 43.
  • the blades 34, 44 are connected to the arms 33, 43 of the mixing trains 3, 4 by means of connecting rods 37, 47.
  • the length L33 of the arm 33 of the first mixing train 3 is strictly greater than the length L43 of the arm 43 of at least one second mixing train 4.
  • the at least one second mixing train 4 meshing with the second ring 7 of larger diameter will be located closer to the periphery 22 of the fixed tank 2.
  • the length of its arm 43 must be reduced compared to that of the arm 33 of the first mixing train 3, so that its blades 34 do not collide with the periphery 22 of said tank 2.
  • the diameter D3 of the path T3 traversed by the at least one blade 34 of the first mixing train 3 is such that said at least one blade 34 passes through the axis A of the tank 2.
  • the diameter D4 of the path T4 traversed by the at least one blade 44 of the at least one second mixing train 4 is such that said at least one blade 44 passes close to the periphery 22 of the tank 2 .
  • the entire surface of the bottom of the fixed tank 2 will be swept by the blades 34, 44 of the first 3 or of at least one second 4 mixing train, which guarantees a homogeneous mixture of materials in the tank 2 during the mixing process. operation of the mixing device 1.
  • the diameter D4 of the path T4 traveled by the at least one blade 44 of the at least one second mixing train 4 is strictly less than the diameter D3 of the path T3 traveled by the at least one blade 34 of the first mixing train 3.
  • the difference between the diameter D3 and the diameter D4 can be greater than or equal to the difference between the diameter D6 of the first ring 6 and the diameter D7 of the second ring 7.
  • the drive shafts 31 of the first 3 and of at least one second 4 mixing train being arranged on the rotary plate 5 so that the blades 34, 44 of each of the mixing trains 3, 4 n ' do not collide during the rotation of the mixing trains 3, 4.
  • the entire surface of the bottom of the fixed tank 2 will be swept by the blades 34, 44 of the first 3 or of at least one second 4 mixing train during the operation of the mixing device 1, which allows that all of the materials present in the tank 2 are mixed simultaneously.
  • a homogeneous mixture of materials is guaranteed, without the blades 34, 44 of the first and at least one second mixing train 3, 4 colliding with each other during their respective paths in the fixed tank 2 .
  • the first ring gear 6 has teeth 61 on its outer periphery 62 or on its inner periphery 63, with which the pinion 32 of the first mixing train 3 engages.
  • the second ring gear 7 has teeth 71 on its outer periphery 72 or on its inner periphery 73, with which the pinion 42 of at least one second mixing train 4 engages.
  • the volume of the tank 2 is greater than or equal to 3 m 3 .
  • the mixing apparatus 1 is particularly suitable for ensuring the mixing of a large quantity of materials, in that it makes it possible to provide a plurality of mixing trains 3, 4, and in particular of second trains. mixing 4, so that all the materials in the fixed tank 2 are mixed simultaneously, which makes it possible to obtain a homogeneous mixture.
  • said mixing apparatus 1 comprises at least two second mixing trains 4.
  • the kneading apparatus 1 thus comprises at least three kneading trains 3, 4, which are distributed substantially regularly around the axis A of the tank 2, so that all the materials in the tank 2 are mixed simultaneously, during the operation of said mixing device 1.
  • a first mixing train 3 and at least four second mixing trains 4. Therefore, so that all of the materials located in the fixed tank 2 are mixed simultaneously, during the operation of said mixing device 1, there can be advantageously provided a third toothed circular ring (not shown in the figures) with a diameter strictly greater than the diameter D6 of the first ring 6 and the diameter D7 of the second ring gear 7, with which at least one pinion of a second mixing train 4 engages.
  • the various mixing trains are dimensioned so that their blades do not collide during the operation of the mixing apparatus 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Description

La présente invention concerne un appareil de malaxage de matériaux humides ou secs, notamment de composants pour la fabrication de béton.The present invention relates to an apparatus for mixing wet or dry materials, in particular components for the manufacture of concrete.

Le domaine de l'invention est celui des appareils de malaxage de matériaux humides ou secs, et notamment des différents composants employés lors de la fabrication du béton, et plus particulièrement sur les sites de fabrication du béton, connus sous le nom d'usines à béton.The field of the invention is that of devices for mixing wet or dry materials, and in particular of the various components used during the manufacture of concrete, and more particularly on concrete production sites, known under the name of concrete factories. concrete.

De façon bien connue, un tel appareil comporte généralement une cuve, dont la taille peut aller jusqu'à plusieurs m3. Ladite cuve reçoit les différents matériaux à malaxer, comme par exemple les différents composants du béton, comme le ciment, l'eau, le sable, les granulats et différents adjuvants, lesquels sont mélangés et malaxés de sorte à former un mélange pâteux homogène qui peut ensuite être employé sur tout type de chantier.In a well-known manner, such an apparatus generally comprises a tank, the size of which may be up to several m 3 . Said tank receives the various materials to be mixed, such as for example the various components of concrete, such as cement, water, sand, aggregates and various additives, which are mixed and mixed so as to form a homogeneous pasty mixture which can then be used on any type of site.

Des pales de malaxage entraînées en rotation par rapport à la cuve sont employées afin de réaliser le mélange et le malaxage des matériaux bruts du béton.Mixing blades driven in rotation with respect to the tank are used in order to achieve the mixing and mixing of the raw concrete materials.

L'invention concerne plus particulièrement le domaine des malaxeurs à cuve fixe et à train épicycloïdal pour lesquels les pales de malaxage sont entrainées suivant des trajectoires épicycloïdales. Ainsi, on connaît par exemple du document FR2 527 939 A un appareil de malaxage à cuve fixe comprenant une cuve fixe dans laquelle sont introduits les différents composants à malaxer, un train de malaxage comprenant des pales entraînées dans un mouvement épicycloïdal par un organe moteur. Le dispositif d'entraînement du train de malaxage comprend un organe moteur, fixe, entrainant un plateau rotatif via une couronne solidaire du diamètre externe du plateau. Le plateau rotatif sert de support au train de malaxage, ledit train de malaxage étant articulé en rotation sur le plateau. Le train de malaxage présente, sur son arbre d'entraînement, un pignon récepteur qui vient s'engrener autour d'une couronne fixe afin d'être mis en rotation par rapport au plateau rotatif.The invention relates more particularly to the field of mixers with a fixed tank and an epicyclic train for which the mixing blades are driven along epicyclic paths. Thus, we know for example from the document FR2 527 939 A a fixed-tank mixing apparatus comprising a fixed tank into which the various components to be mixed are introduced, a mixing train comprising blades driven in an epicyclic movement by a motor member. The mixing train drive device comprises a motor member, fixed, driving a rotary plate via a ring integral with the outer diameter of the plate. The rotating plate serves as a support for the mixing train, said mixing train being articulated in rotation on the plate. The mixing train has, on its drive shaft, a receiving pinion which meshes around a fixed ring gear so as to be rotated relative to the rotary plate.

De manière notable, le plateau rotatif et la couronne fixe sont coaxiaux et laissent en leur centre un large dégagement central. Un conduit d'alimentation central, fixe, traverse ce dégagement central et autorise un large accès au centre de la cuve, permettant en particulier le chargement des matières.Notably, the rotary plate and the fixed crown are coaxial and leave a large central clearance in their center. A central, fixed supply duct crosses this central clearance and allows wide access to the center of the tank, in particular allowing the loading of materials.

Un train de malaxage comporte généralement au moins un bras, au niveau de chaque extrémité duquel est fixée une pale, ledit bras s'étendant perpendiculairement à l'arbre d'entraînement du train de malaxage, et de manière classique centré sur ledit arbre d'entraînement.A mixing train generally comprises at least one arm, at each end of which is fixed a blade, said arm extending perpendicular to the drive shaft of the mixing train, and conventionally centered on said shaft. training.

De façon bien connue, et en particulier pour des cuves de large capacité et de diamètre important, on peut prévoir d'employer une pluralité de trains de malaxage afin de couvrir l'intégralité du volume de la cuve, de sorte à effectuer simultanément le malaxage de l'ensemble des matériaux se trouvant dans la cuve et assurer leur mélange homogène. Selon l'état de la technique connu, les arbres d'entraînement des différents trains de malaxage sont prévus pour être mis en rotation par une même couronne d'entraînement, et classiquement par l'intermédiaire de pignons identiques. De ce fait, ces différents arbres d'entrainement auront des vitesses angulaires d'entraînement par rapport à la cuve identique, la vitesse angulaire de rotation de chaque train de malaxage par rapport à son arbre d'entraînement dépendant du rapport entre le nombre de dents de son pignon récepteur et celui de la roue fixe.As is well known, and in particular for tanks of large capacity and large diameter, it is possible to provide for the use of a plurality of mixing trains in order to cover the entire volume of the tank, so as to simultaneously perform the mixing. of all the materials in the tank and ensure their homogeneous mixing. According to the known state of the art, the drive shafts of the various mixing trains are designed to be rotated by a single drive ring gear, and conventionally by means of identical pinions. As a result, these different drive shafts will have angular drive speeds relative to the same tank, the angular speed of rotation of each mixing train relative to its drive shaft depending on the ratio between the number of teeth. of its receiving pinion and that of the fixed wheel.

De plus, les pales de malaxage, fixées aux deux extrémités du bras de chaque train de malaxage, vont avoir une vitesse linéaire, qui va varier en continu, ce qui permet d'effectuer le malaxage par étirement différentiel du mélange des différents matériaux. De manière classique, les trains de malaxage sont entraînés en rotation autour de leur axe, dans le même sens de rotation que le plateau tournant, ce qui permet de maximiser la vitesse linéaire maximale de ladite pale.In addition, the mixing blades, fixed to the two ends of the arm of each mixing train, will have a linear speed, which will vary continuously, which allows the mixing by differential stretching of the mixture of the different materials. Conventionally, the mixing trains are driven in rotation about their axis, in the same direction of rotation as the turntable, which makes it possible to maximize the maximum linear speed of said blade.

Cependant, la vitesse linéaire de chaque pale doit être telle qu'elle ne dépasse pas une certaine valeur, pour ne pas entraîner une dégradation de l'efficacité du mélange, par ségrégation et projection, ainsi qu'une usure accélérée, et qu'elle ne soit pas inférieure à une certaine valeur, ce qui nuirait également à son efficacité. Par ailleurs, la dimension des bras supportant les pales de malaxage doit être telle qu'au moins les pales d'un train de malaxage passent par le centre de la cuve et par la zone périphérique de la cuve, laquelle reçoit la majorité du mélange, sans que les pales des différents trains de malaxage ne viennent à entrer en collision, lors du fonctionnement dudit appareil de malaxage. A cet effet, il peut être prévu des trains de malaxage avec des bras de longueurs différentes.However, the linear speed of each blade must be such that it does not exceed a certain value, so as not to cause a degradation of the efficiency of the mixture, by segregation and projection, as well as accelerated wear, and that it is not less than a certain value, which would also affect its effectiveness. Furthermore, the dimension of the arms supporting the mixing blades must be such that at least the blades of a mixing train pass through the center of the tank and through the peripheral zone of the tank, which receives the majority of the mixture, without the blades of the various mixing trains coming into collision, during the operation of said mixing apparatus. For this purpose, mixing trains with arms of different lengths can be provided.

Dans le cas de cuves de grands volumes (par exemple de volume supérieur ou égal à 3 m3), il est préférable d'employer au moins trois trains de malaxage pour s'assurer que l'ensemble des matériaux présents dans la cuve soient malaxés simultanément, de sorte à obtenir un mélange homogène.In the case of large volume tanks (for example with a volume greater than or equal to 3 m 3 ), it is preferable to use at least three mixing trains to ensure that all the materials present in the tank are mixed. simultaneously, so as to obtain a homogeneous mixture.

On connaît ainsi du document WO 9 511 120 A , un malaxeur pour béton comprenant une cuve et trois trains de malaxage.We thus know from the document WO 9 511 120 A , a concrete mixer comprising a tank and three mixing trains.

Un tel malaxeur 1', selon cette conception antérieure, est représenté schématiquement sur la figure 1 de la présente demande.Such a mixer 1 ', according to this prior design, is shown schematically in the figure 1 of the present application.

Afin de pouvoir couvrir l'intégralité du volume de la cuve 2' simultanément par les différents trains de malaxage 3', 4', il est prévu dans un tel malaxeur 1' qu'un seul train de malaxage 3' ait ses pales 34' passant par le centre A' de la cuve 2' et que les autres trains de malaxage 4' aient leur pales 44' passant au niveau de la périphérie 21' de la cuve 2'.In order to be able to cover the entire volume of the tank 2 'simultaneously by the various mixing trains 3', 4 ', it is provided in such a mixer 1' that a single mixing train 3 'has its blades 34'. passing through the center A 'of the tank 2' and that the other mixing trains 4 'have their blades 44' passing at the level of the periphery 21 'of the tank 2'.

De ce fait, afin que les pales 34', 44' des différents trains de malaxage 3', 4' ne viennent pas entrer en collision au cours du fonctionnement de l'appareil de malaxage 1', il est également prévu que l'arbre d'entraînement 41' des trains de malaxage 4' ayant des pales 34', 44' ne passant pas par le centre A' de la cuve 2' soit déporté par rapport à la couronne circulaire 6' sur laquelle le pignon d'entraînement 32' monté sur l'arbre d'entraînement 31' du train de malaxage 3' dont les pales 34' passent par le centre A' de cuve 2'.Therefore, so that the blades 34 ', 44' of the various mixing trains 3 ', 4' do not come into collision during the operation of the mixing apparatus 1 ', it is also expected that the shaft drive 41 'of the mixing trains 4' having blades 34 ', 44' not passing through the center A 'of the tank 2' is offset relative to the circular ring 6 'on which the drive pinion 32 'mounted on the drive shaft 31' of the mixing train 3 ', the blades 34' of which pass through the center A 'of the tank 2'.

A cet effet, et afin de garantir que les trains de malaxage 3', 4' soient entraînés en rotation dans le même sens, deux pignons 45', 46' sont intercalés entre ladite couronne circulaire 6' et ledit pignon d'entraînement 42' des trains de malaxage 4' déportés, ne passant pas par le centre A' de la cuve 2'.To this end, and in order to ensure that the mixing trains 3 ', 4' are rotated in the same direction, two pinions 45 ', 46' are interposed between said circular crown 6 'and said drive pinion 42' of the offset mixing trains 4 ', not passing through the center A' of the tank 2 '.

De ce fait, les pales 44 des trains de malaxage 4' déportés parcourent une trajectoire circulaire T4' de diamètre D4', inférieur au diamètre D3' de la trajectoire circulaire T3' parcourue par les pales 34 du premier train de malaxage 3. Cependant, les vitesses angulaires d'entraînement des différents trains de malaxage 3', 4' demeurent identiques si leurs pignons d'entraînement 32', 42' le sont, ce qui est le cas dans le dispositif décrit dans le document WO 9 511 120 A .Therefore, the blades 44 of the offset mixing trains 4 'travel a circular path T4' of diameter D4 ', less than the diameter D3' of the circular path T3 'traveled by the blades 34 of the first mixing train 3. However, the angular drive speeds of the different mixing trains 3 ', 4' remain identical if their drive pinions 32 ', 42' are, which is the case in the device described in the document WO 9 511 120 A .

Par exemple, sur l'exemple de réalisation de la figure 1, les dimensions sont les suivantes :

  • Le diamètre D6' de la couronne circulaire 6' est de 1262 mm,
  • Le diamètre des pignons d'entrainement 32', 42' est de 250 mm
  • Le diamètre D3' de la trajectoire circulaire T3' est de 1620 mm,
  • Le diamètre D4' de la trajectoire circulaire T4' est de 1340 mm.
For example, on the embodiment of the figure 1 , the dimensions are as follows:
  • The diameter D6 'of the circular crown 6' is 1262 mm,
  • The diameter of the 32 ', 42' drive sprockets is 250 mm
  • The diameter D3 'of the circular path T3' is 1620 mm,
  • The diameter D4 'of the circular path T4' is 1340 mm.

Ainsi, la vitesse linéaire maximale des pales 34 du premier train de malaxage 3 est de 3,71 m/s, tandis que la vitesse linéaire maximale des pales 44 de chacun des deuxièmes trains de malaxage 4 est de 3,59 m/s.Thus, the maximum linear speed of the blades 34 of the first mixing train 3 is 3.71 m / s, while the maximum linear speed of the blades 44 of each of the second mixing trains 4 is 3.59 m / s.

La vitesse linéaire maximale moyenne des pales est par ailleurs de 3,63 m/s.The average maximum linear speed of the blades is also 3.63 m / s.

Or, selon les constations de l'inventeur, il est souhaitable d'obtenir que les vitesses linéaires restent importantes pour les pales des différents trains de malaxage, afin d'obtenir un mélange homogène des différents matériaux, par étirement différentiel. Il faudrait pour cela que la vitesse angulaire d'entraînement des trains de malaxage ayant les bras les plus courts soit supérieure à celle des trains de malaxage ayant les bras les plus longs pour compenser la différence de diamètre des trajectoires parcourues par les pales des différents trains de malaxage.However, according to the findings of the inventor, it is desirable to obtain that the linear speeds remain high for the blades of the various mixing trains, in order to obtain a homogeneous mixture of the various materials, by differential stretching. This would require that the angular speed of drive of the mixing trains with the shortest arms is greater than that of the mixing trains with the longest arms to compensate for the difference in diameter of the paths traveled by the blades of the different trains. mixing.

Selon les constations de l'inventeur, il faudrait donc envisager d'employer un pignon avec un nombre de dents et un diamètre augmenté pour le train de malaxage ayant le bras le plus long, car le pignon du train de malaxage ayant le bras le plus court est le train de malaxage déporté, et est généralement déjà de dimensions minimales, notamment en termes de résistance mécanique et de couple transmissible. Le positionnement sur le plateau rotatif des arbres d'entraînement entraînant les trains de malaxage en rotation autour de l'axe de la cuve, restant identique, il faudra de ce fait prévoir une couronne circulaire de diamètre réduit.
Cela risque ainsi de complexifier la conception d'un tel appareil de malaxage.
En outre, ladite couronne étant prévue pour être éventuellement disposée autour d'un conduit d'alimentation de la cuve, il faudra prévoir de diminuer également le diamètre dudit conduit, ce qui peut s'avérer problématique pour assurer l'alimentation de la cuve de façon optimale.
Pour ces raisons et selon les constations de l'inventeur, la vitesse linéaire maximale des pales des trains de malaxage en position déportée (à bras court) est limitée par cette conception. Une telle limitation affecte les performances générales de malaxage, en particulier lorsque les trains de malaxage en position déportée sont en nombre (i.e deux, trois) et que leur action de malaxage devient ainsi prépondérante. Le document DE 10 2014 008 067 A1 divulgue un appareil de malaxage de matériaux humides et secs selon le préambule de la revendication 1.According to the findings of the inventor, it would therefore be necessary to consider using a pinion with a number of teeth and an increased diameter for the train of mixing having the longest arm, because the pinion of the mixing train with the shortest arm is the offset mixing train, and is generally already of minimum dimensions, in particular in terms of mechanical resistance and transmissible torque. As the positioning of the drive shafts on the rotary plate causing the mixing trains to rotate around the axis of the tank, remaining identical, it will therefore be necessary to provide a circular ring of reduced diameter.
This thus risks complicating the design of such a mixing device.
In addition, said ring being intended to be optionally disposed around a supply duct of the tank, provision will have to be made to also reduce the diameter of said duct, which can prove to be problematic for ensuring the supply of the tank. optimally.
For these reasons and according to the findings of the inventor, the maximum linear speed of the blades of the mixing trains in the offset position (with a short arm) is limited by this design. Such a limitation affects the general mixing performance, in particular when there are a number of mixing trains in the offset position (ie two, three) and their mixing action thus becomes predominant. The document DE 10 2014 008 067 A1 discloses an apparatus for mixing wet and dry materials according to the preamble of claim 1.

L'invention propose de pallier à ces inconvénients en fournissant un appareil de malaxage de matériaux humides ou secs, notamment de composants pour la fabrication de béton permettant d'assurer un mélange homogène des matériaux, de conception simple et de coût de revient réduit, et notamment dans le cas où ledit appareil de malaxage est prévu pour mélanger une quantité importante de matériaux.
L'invention permet également d'employer un conduit d'alimentation centré sur l'axe de la cuve fixe, de dimensions telles à permettre une alimentation optimale de ladite cuve.
D'autres buts et avantages de l'invention apparaîtront au cours de la description qui va suivre, qui n'est donnée qu'à titre indicatif.The invention proposes to overcome these drawbacks by providing an apparatus for mixing wet or dry materials, in particular components for the manufacture of concrete making it possible to ensure a homogeneous mixture of materials, of simple design and of reduced production cost, and in particular in the case where said mixing apparatus is provided for mixing a large quantity of materials.
The invention also makes it possible to use a feed duct centered on the axis of the fixed tank, of dimensions such as to allow optimum feeding of said tank.
Other objects and advantages of the invention will become apparent from the description which follows, which is given only as an indication.

Ainsi l'invention concerne un appareil de malaxage de matériaux humides ou secs, notamment de composants pour la fabrication de béton, comprenant :

  • une cuve fixe de forme cylindrique d'axe A,
  • un premier train de malaxage comprenant un arbre d'entraînement d'axe B, muni d'un pignon fixé centré sur l'axe B de l'arbre d'entraînement, et au moins une pale de malaxage, ladite pale parcourant autour de l'axe B de l'arbre d'entraînement une trajectoire circulaire de diamètre D3,
  • au moins un deuxième train de malaxage comprenant un arbre d'entraînement d'axe C, muni d'un pignon fixé centré sur l'axe C de l'arbre d'entraînement, et au moins une pale de malaxage, ladite pale parcourant autour de l'axe C de l'arbre d'entrainement une trajectoire circulaire de de diamètre D4,
  • un plateau rotatif centré sur l'axe A de la cuve, entraîné en rotation autour de l'axe A de la cuve, le plateau rotatif recevant l'arbre d'entraînement de chacun du premier et du au moins un deuxième train de malaxage.
Thus the invention relates to an apparatus for mixing wet or dry materials, in particular components for the manufacture of concrete, comprising:
  • a fixed cylindrical tank with axis A,
  • a first mixing train comprising a drive shaft of axis B, provided with a pinion fixed centered on the axis B of the drive shaft, and at least one mixing blade, said blade traveling around the 'axis B of the drive shaft a circular path of diameter D3,
  • at least one second mixing train comprising a drive shaft of axis C, provided with a pinion fixed centered on the axis C of the drive shaft, and at least one mixing blade, said blade traveling around of the axis C of the drive shaft a circular path of diameter D4,
  • a rotary plate centered on the axis A of the tank, driven in rotation around the axis A of the tank, the rotary plate receiving the drive shaft of each of the first and at least one second mixing train.

Selon l'invention, ledit appareil de malaxage comporte en outre :

  • une première couronne circulaire dentée de diamètre D6, centrée sur l'axe A de la cuve et immobile par rapport à la cuve, et
  • une deuxième couronne circulaire dentée de diamètre D7, centrée sur l'axe A de la cuve et immobile par rapport à la cuve,
telles que le diamètre D7 est strictement supérieur au diamètre D6.According to the invention, said mixing apparatus further comprises:
  • a first toothed circular ring of diameter D6, centered on the axis A of the tank and stationary with respect to the tank, and
  • a second circular ring gear of diameter D7, centered on the axis A of the tank and stationary with respect to the tank,
such that the diameter D7 is strictly greater than the diameter D6.

Selon l'invention, le pignon fixé sur l'arbre d'entraînement du premier train de malaxage vient engrener avec la première couronne circulaire, et le pignon fixé sur l'arbre d'entraînement du au moins un deuxième train de malaxage vient engrener avec la deuxième couronne circulaire.According to the invention, the pinion fixed on the drive shaft of the first mixing train engages with the first circular ring gear, and the pinion fixed on the drive shaft of at least one second mixing train engages with the second circular crown.

Selon des caractéristiques optionnelles prises seules ou en combinaison :

  • l'appareil de malaxage comprend un conduit d'alimentation disposé au-dessus de la cuve, centré sur l'axe a de la cuve,
  • le premier train de malaxage comporte un bras de longueur L33, disposé perpendiculairement à l'arbre d'entraînement, centré sur ledit arbre d'entraînement, deux pales étant fixées au niveau de chaque extrémité du bras et le deuxième train de malaxage comporte un bras de longueur L43, disposé perpendiculairement à l'arbre d'entraînement, centré sur ledit arbre d'entraînement, deux pales étant fixées au niveau de chaque extrémité du bras,
  • le diamètre D3 de la trajectoire parcourue par la au moins une pale du premier train de malaxage est tel que ladite au moins une pale passe par l'axe A de la cuve,
  • le diamètre D4 de la trajectoire parcourue par la au moins une pale du premier train de malaxage est tel que ladite au moins une pale passe à proximité de la périphérie de la cuve,
  • la longueur L33 du bras du premier train de malaxage est telle que les pales montées au niveau de chacune de ses extrémités vont parcourir une trajectoire passant par l'axe A de la cuve,
  • la longueur L43 du bras de chacun du au moins un deuxième train de malaxage est telle que les pales montées au niveau de chacune de ses extrémités vont parcourir une trajectoire passant à proximité de la périphérie de la cuve,
  • le diamètre D4 de la trajectoire parcourue par la au moins une pale du au moins un deuxième train de malaxage est strictement inférieur au diamètre D3 de la trajectoire parcourue par la au moins une pale du premier train de malaxage, et la différence entre le diamètre D3 et le diamètre D4 est supérieure ou égale à la différence entre le diamètre D6 de la première couronne et le diamètre D7 de la deuxième couronne, les arbres d'entraînement du premier et du au moins un deuxième train de malaxage étant disposés sur le plateau rotatif de sorte que les pales de chacun des trains de malaxage n'entrent pas en collision au cours de la rotation des trains de malaxage,
  • la première couronne comporte des dentures sur sa périphérie extérieure ou sur sa périphérie intérieure, sur lesquelles vient engrener le pignon du premier train de malaxage,
  • la deuxième couronne comporte des dentures sur sa périphérie extérieure ou sur sa périphérie intérieure, sur lesquelles vient engrener le pignon du au moins un deuxième train de malaxage,
  • le volume de la cuve est supérieur ou égale à 3 m3,
  • l'appareil de malaxage comprend au moins deux deuxièmes trains de malaxage.
According to optional characteristics taken alone or in combination:
  • the mixing apparatus comprises a supply duct arranged above the tank, centered on the axis a of the tank,
  • the first mixing train comprises an arm of length L33, arranged perpendicular to the drive shaft, centered on said drive shaft, two blades being fixed at each end of the arm and the second mixing train comprises an arm of length L43, arranged perpendicular to the drive shaft, centered on said drive shaft, two blades being fixed at each end of the arm,
  • the diameter D3 of the path traveled by the at least one blade of the first mixing train is such that said at least one blade passes through the axis A of the vessel,
  • the diameter D4 of the path traveled by the at least one blade of the first mixing train is such that said at least one blade passes close to the periphery of the vessel,
  • the length L33 of the arm of the first mixing train is such that the blades mounted at each of its ends will travel a path passing through the axis A of the tank,
  • the length L43 of the arm of each of the at least one second mixing train is such that the blades mounted at each of its ends will travel a path passing close to the periphery of the tank,
  • the diameter D4 of the path traveled by the at least one blade of the at least one second mixing train is strictly less than the diameter D3 of the path traveled by the at least one blade of the first mixing train, and the difference between the diameter D3 and the diameter D4 is greater than or equal to the difference between the diameter D6 of the first ring gear and the diameter D7 of the second ring gear, the drive shafts of the first and of the at least one second mixing train being arranged on the rotary plate so that the blades of each of the mixing trains do not collide during the rotation of the mixing trains,
  • the first ring gear has teeth on its outer periphery or on its inner periphery, with which the pinion of the first mixing train engages,
  • the second ring gear has teeth on its outer periphery or on its inner periphery, with which the pinion of at least one second mixing train engages,
  • the volume of the tank is greater than or equal to 3 m 3 ,
  • the kneading apparatus comprises at least two second kneading trains.

L'invention sera mieux comprise à la lecture de la description suivante accompagnée des figures en annexe, parmi lesquelles :

  • La figure 1 est une vue de dessus d'un appareil de malaxage de l'état de la technique,
  • La figure 2 est une vue de dessus d'un appareil de malaxage conforme à un mode de réalisation de l'invention,
  • La figure 3 est une vue en perspective en coupe d'un appareil de malaxage conforme à un mode de réalisation de l'invention,
  • La figure 4 est une vue de détail en coupe d'un appareil de malaxage conforme à un autre mode de réalisation de l'invention.
The invention will be better understood on reading the following description accompanied by the appended figures, among which:
  • The figure 1 is a top view of a mixing apparatus of the state of the art,
  • The figure 2 is a top view of a mixing apparatus according to one embodiment of the invention,
  • The figure 3 is a perspective sectional view of a mixing apparatus according to one embodiment of the invention,
  • The figure 4 is a detailed sectional view of a mixing apparatus according to another embodiment of the invention.

Dans toute la suite de la description, on considérera l'appareil de malaxage 1 en position normale de fonctionnement, c'est-à-dire posé sur le sol. Les références spatiales, telles que « au-dessus », « en-dessous », sont considérées dans une telle position, sauf si précise.Throughout the remainder of the description, the mixing apparatus 1 will be considered in the normal operating position, that is to say placed on the ground. Spatial references, such as "above", "below", are considered in such a position, unless specified.

L'invention concerne un appareil de malaxage 1 de matériaux humides ou secs, notamment de composants pour la fabrication de béton, comprenant :

  • une cuve 2 fixe de forme cylindrique d'axe A,
  • un premier train de malaxage 3 comprenant un arbre d'entraînement 31 d'axe B, muni d'un pignon 32 fixé centré sur l'axe B de l'arbre d'entraînement 31, et au moins une pale 34 de malaxage, ladite pale 34 parcourant autour de l'axe B de l'arbre d'entraînement 31 une trajectoire T3 circulaire de diamètre D3,
  • au moins un deuxième train de malaxage 4 comprenant un arbre d'entraînement 41 d'axe C, muni d'un pignon 42 fixé centré sur l'axe C de l'arbre d'entraînement 41, et au moins une pale 44 de malaxage, ladite pale 44 parcourant autour de l'axe C de l'arbre d'entrainement 41 une trajectoire T4 circulaire de diamètre D4,
  • un plateau rotatif 5 centré sur l'axe A de la cuve 2, entraîné en rotation autour de l'axe A de la cuve 2, le plateau rotatif 5 recevant l'arbre d'entraînement 31, 41 de chacun du premier 3 et du au moins un deuxième 4 train de malaxage.
The invention relates to an apparatus 1 for mixing wet or dry materials, in particular components for the production of concrete, comprising:
  • a fixed tank 2 of cylindrical shape with axis A,
  • a first mixing train 3 comprising a drive shaft 31 of axis B, provided with a pinion 32 fixed centered on the axis B of the drive shaft 31, and at least one mixing blade 34, said blade 34 traversing around the axis B of the drive shaft 31 a circular path T3 of diameter D3,
  • at least one second mixing train 4 comprising a drive shaft 41 of axis C, provided with a pinion 42 fixed centered on the axis C of the drive shaft 41, and at least one mixing blade 44 , said blade 44 traversing around the axis C of the drive shaft 41 a circular path T4 of diameter D4,
  • a rotary plate 5 centered on the axis A of the tank 2, driven in rotation around the axis A of the tank 2, the rotary plate 5 receiving the drive shaft 31, 41 of each of the first 3 and of the at least a second 4 mixing train.

Selon l'invention, ledit appareil de malaxage comporte en outre :

  • une première couronne 6 circulaire dentée de diamètre D6, centrée sur l'axe A de la cuve 2 et immobile par rapport à la cuve 2, et
  • une deuxième couronne 7 circulaire dentée de diamètre D7, centrée sur l'axe A de la cuve 2 et immobile par rapport à la cuve 2,
    lesdites couronnes 6, 7 étant telles que le diamètre D7 est strictement supérieur au diamètre D6.
According to the invention, said mixing apparatus further comprises:
  • a first circular toothed ring gear 6 of diameter D6, centered on the axis A of the tank 2 and stationary relative to the tank 2, and
  • a second circular ring gear 7 of diameter D7, centered on the axis A of the tank 2 and stationary relative to the tank 2,
    said rings 6, 7 being such that the diameter D7 is strictly greater than the diameter D6.

Selon l'invention, le pignon fixé 32 sur l'arbre d'entraînement 31 du premier train de malaxage 3 venant engrener avec la première couronne circulaire 6, et le pignon 42 fixé sur l'arbre d'entraînement 41 du au moins un deuxième train de malaxage 4 venant engrener avec la deuxième couronne circulaire 7.According to the invention, the pinion fixed 32 on the drive shaft 31 of the first mixing train 3 coming into mesh with the first circular ring gear 6, and the pinion 42 fixed on the drive shaft 41 of the at least a second mixing train 4 meshing with the second circular ring gear 7.

Ainsi, grâce à cette disposition avantageuse de l'invention, le au moins un deuxième train de malaxage 4 peut se trouver dans une position déportée par rapport au premier train de malaxage 3, sans employer de pignons intermédiaires, ce qui simplifie la conception dudit appareil de malaxage 1 et réduit son coût de revient.Thus, thanks to this advantageous arrangement of the invention, the at least one second mixing train 4 can be located in a position offset from the first mixing train 3, without using intermediate gears, which simplifies the design of said device. mixing 1 and reduces its cost price.

De plus, dans le cas où les pignons 32, 42 de chacun des trains de malaxage 3, 4 sont identiques, la vitesse angulaire d'entraînement de l'arbre d'entraînement 41 du au moins un deuxième train de malaxage 4 sera supérieure à la vitesse angulaire d'entraînement de l'arbre d'entraînement 31 du premier train de malaxage 3, alors que leurs pignons respectifs 32, 42 peuvent demeurer identiques.In addition, in the case where the pinions 32, 42 of each of the mixing trains 3, 4 are identical, the angular drive speed of the drive shaft 41 of the at least one second mixing train 4 will be greater than the angular speed of drive of the drive shaft 31 of the first mixing train 3, while their respective pinions 32, 42 may remain identical.

De ce fait, les vitesses linéaires au niveau de chacune de la au moins une pale 34, 44 de chacun des trains de malaxage 3, 4 sont telles que le malaxage des matériaux est optimal de sorte à obtenir un béton homogène. Notamment, selon le diamètre D3, D4 de la trajectoire circulaire T3, T4 parcourue par le premier 3 et le au moins un deuxième train de malaxage 4, les vitesses linéaires maximales des pales 34, 44 peuvent être sensiblement identiques, ou voisines, ce qui permet un mélange optimal des matériaux se trouvant dans la cuve 2.As a result, the linear speeds at each of the at least one blade 34, 44 of each of the mixing trains 3, 4 are such that the mixing of the materials is optimal so as to obtain a homogeneous concrete. In particular, according to the diameter D3, D4 of the circular path T3, T4 traveled by the first 3 and the at least one second mixing train 4, the maximum linear speeds of the blades 34, 44 can be substantially identical, or similar, which allows optimal mixing of the materials in the tank 2.

Dans le cas où il est prévu une pluralité de deuxièmes trains de malaxage 4, par exemple trois, comme sur l'exemple de réalisation de la figure 2, notamment pour une cuve 2 de grandes dimensions i.e. supérieure à 3 m3, la vitesse linéaire maximale de la au moins une pale 44 de chaque deuxième train de malaxage 4 peut être supérieure à la vitesse linaire maximale de la au moins une pale du premier train de malaxage 3, ce qui est particulièrement avantageux, en ce que l'action de malaxage desdits deuxièmes trains de malaxage est prépondérante.In the case where a plurality of second mixing trains 4 are provided, for example three, as in the exemplary embodiment of the figure 2 , in particular for a tank 2 of large dimensions, ie greater than 3 m 3 , the maximum linear speed of the at least one blade 44 of each second mixing train 4 may be greater than the maximum linear speed of the at least one blade of the first mixing train 3, which is particularly advantageous, in that the mixing action of said second mixing trains is preponderant.

Par exemple :

  • le diamètre D6 peut être de 1416 mm,
  • le diamètre D7 peut être de 2130 mm,
  • le diamètre D3 de la trajectoire circulaire T3 parcourue par les pales 34 du premier train de malaxage 3 peut être de 1360 mm,
  • le diamètre D4 de la trajectoire circulaire T4 parcourue par les pales 44 du au moins un deuxième train de malaxage 4 peut être de 1700 mm,
  • Le diamètre du pignon 32 du premier train est de 250mm,
  • Le diamètre du pignon 42 du deuxième train est de 278mm.
For example :
  • the diameter D6 can be 1416 mm,
  • the diameter D7 can be 2130 mm,
  • the diameter D3 of the circular path T3 traversed by the blades 34 of the first mixing train 3 can be 1360 mm,
  • the diameter D4 of the circular path T4 traversed by the blades 44 of the at least one second mixing train 4 can be 1700 mm,
  • The diameter of the pinion 32 of the first train is 250mm,
  • The diameter of the pinion 42 of the second train is 278mm.

Avec de telles dimensions, la vitesse linéaire maximale de chacune des pales 44 des deuxièmes trains de malaxage vaut environs 3,8 m/s tandis que la vitesse linéaire maximale des pales 34 du premier train de malaxage 3 vaut environs 3,5 m/s.With such dimensions, the maximum linear speed of each of the blades 44 of the second mixing trains is around 3.8 m / s while the maximum linear speed of the blades 34 of the first mixing train 3 is around 3.5 m / s. .

La vitesse linéaire maximale moyenne est alors de 3,72 m/s.The average maximum linear speed is then 3.72 m / s.

De façon classique et comme visible sur l'exemple de réalisation de la figure 3, le plateau rotatif 5 est entraîné en rotation par l'intermédiaire d'une pluralité de motoréducteurs 51, répartis de façon régulière autour du plateau rotatif, comprenant par exemple chacun un pignon 52 monté sur leur arbre d'entraînement, ledit pignon 52 venant engrener avec une couronne dentée circulaire 53 fixée au plateau rotatif 5.In a classic way and as visible on the example of realization of the figure 3 , the rotary plate 5 is driven in rotation by means of a plurality of geared motors 51, distributed evenly around the rotary plate, each comprising for example a pinion 52 mounted on their drive shaft, said pinion 52 coming into mesh with a circular toothed ring 53 fixed to the turntable 5.

Alternativement, sans sortir du cadre de la présente invention, tout ou partie des pales 34, 44 des trains de malaxage 3, 4 peuvent être remplacées par d'autres éléments rotatifs intervenant dans le malaxage du béton, comme par exemple une hélice à béton ou encore un outil rapide à effet dispersif 48, connu également sous le nom de Wirbler en langue anglaise ou de Wirbel en langue allemande.Alternatively, without departing from the scope of the present invention, all or part of the blades 34, 44 of the mixing trains 3, 4 can be replaced by other rotating elements involved in the mixing of the concrete, such as for example a concrete propeller or also a rapid dispersive effect tool 48, also known under the name of Wirbler in English or Wirbel in German.

Comme visible sur l'exemple de réalisation de la figure 4, un tel outil rapide à effet dispersif 48 peut avantageusement être positionné au niveau d'un deuxième train de malaxage 4, dimensionné de sorte à se retrouver propulsé à une vitesse linéaire comprise entre 5 et 10 m/s, selon la taille des particules présentes dans la cuve 2 et la viscosité des matériaux. Un tel outil à effet dispersif 48 a un effet de broyage par choc sur les matériaux présents dans la cuve 2, qui combiné à l'étirement différentiel effectué par les pales 34, 44 des trains de malaxage 3, 4, permet d'optimiser le mélange des matériaux dans la cuve 2.As can be seen on the example of the figure 4 , such a rapid tool with a dispersive effect 48 can advantageously be positioned at the level of a second mixing train 4, sized so as to be propelled at a linear speed of between 5 and 10 m / s, depending on the size of the particles present in tank 2 and the viscosity of the materials. Such a dispersive effect tool 48 has a crushing effect by impact on the materials present in the tank 2, which combined with the differential stretching effected by the blades 34, 44 of the mixing trains 3, 4, makes it possible to optimize the mixing of materials in the tank 2.

La disposition de cet outil rapide à effet dispersif 48 au niveau d'un deuxième train de malaxage 4 dont le pignon 42 vient engrener avec la deuxième couronne circulaire 7 permet avantageusement d'agir sur les particules des matériaux dans la cuve 2 à proximité de la périphérie 22 de ladite cuve 2, qui vont se retrouver coincés contre la périphérie 22 de la cuve 2 par un tel outil rapide à effet dispersif 48, lequel peut ainsi briser les nodules de particules fines de matériaux.The arrangement of this rapid dispersive effect tool 48 at the level of a second mixing train 4, the pinion 42 of which engages with the second circular ring 7 advantageously makes it possible to act on the particles of the materials in the tank 2 near the periphery 22 of said tank 2, which will end up wedged against the periphery 22 of the tank 2 by such a rapid tool with a dispersive effect 48, which can thus break the nodules of fine particles of materials.

Selon un mode de réalisation, l'appareil de malaxage 1 comprend un conduit d'alimentation 21 disposé au-dessus de la cuve 2, centré sur l'axe A de la cuve 2.According to one embodiment, the mixing apparatus 1 comprises a supply duct 21 arranged above the tank 2, centered on the axis A of the tank 2.

Grâce à cette disposition avantageuse de l'invention, il est possible d'alimenter la cuve fixe 2 par au-dessus, ce qui permet notamment d'alimenter ledit appareil de malaxage 1 en fonctionnement, c'est-à-dire, lorsque les trains de malaxage 3, 4 sont entraînés en rotation pour effectuer le malaxage des matériaux dans la cuve fixe 2.Thanks to this advantageous arrangement of the invention, it is possible to feed the fixed tank 2 from above, which makes it possible in particular to feed said mixing device 1 in operation, that is to say, when the mixing trains 3, 4 are driven in rotation to perform the mixing of the materials in the fixed tank 2.

Avantageusement, la première couronne 6 et la deuxième couronne 7 sont positionnées autour du conduit d'alimentation 21 et leur diamètre respectif D6, D7 est strictement supérieur au diamètre D21 dudit conduit d'alimentation 21, de sorte à ne pas venir obstruer le passage à travers le conduit d'alimentation 21, lequel peut ainsi conserver une dimension telle à permettre une alimentation optimale de ladite cuve fixe 2.Advantageously, the first ring 6 and the second ring 7 are positioned around the supply duct 21 and their respective diameter D6, D7 is strictly greater than the diameter D21 of said supply duct 21, so as not to obstruct the passage through through the supply duct 21, which can thus retain a dimension such as to allow optimum supply of said fixed tank 2.

Avantageusement, afin également de ne pas obstruer le passage à travers le conduit d'alimentation 21, le plateau rotatif 5, peut comporter un perçage central 51, de diamètre strictement supérieur au diamètre D21 du conduit d'alimentation.Advantageously, also in order not to obstruct the passage through the supply duct 21, the rotary plate 5 may have a central bore 51, of diameter strictly greater than the diameter D21 of the supply duct.

Selon un mode de réalisation, le premier train de malaxage 3 comporte un bras 33 de longueur L33, disposé perpendiculairement à l'arbre d'entraînement 32, centré sur ledit arbre d'entraînement 32, deux pales 34 étant fixées au niveau de chaque extrémité du bras 33 et le deuxième train de malaxage 4 comporte un bras 43 de longueur L43, disposé perpendiculairement à l'arbre d'entraînement 42, centré sur ledit arbre d'entraînement 42, deux pales 44 étant fixées au niveau de chaque extrémité du bras 43.According to one embodiment, the first mixing train 3 comprises an arm 33 of length L33, arranged perpendicular to the drive shaft 32, centered on said drive shaft 32, two blades 34 being fixed at each end. of the arm 33 and the second mixing train 4 comprises an arm 43 of length L43, arranged perpendicular to the drive shaft 42, centered on said drive shaft 42, two blades 44 being fixed at each end of the arm 43.

Avantageusement, comme visible sur l'exemple de réalisation de la figure 3, les pales 34, 44 sont reliées aux bras 33, 43 des trains de malaxage 3, 4 par l'intermédiaire de tiges de liaison 37, 47.Advantageously, as can be seen in the embodiment of the figure 3 , the blades 34, 44 are connected to the arms 33, 43 of the mixing trains 3, 4 by means of connecting rods 37, 47.

Selon un mode de réalisation, la longueur L33 du bras 33 du premier train de malaxage 3 est strictement supérieure à la longueur L43 du bras 43 du au moins un deuxième train de malaxage 4.According to one embodiment, the length L33 of the arm 33 of the first mixing train 3 is strictly greater than the length L43 of the arm 43 of at least one second mixing train 4.

En effet, le au moins un deuxième train de malaxage 4 engrenant sur la deuxième couronne 7 de plus grand diamètre, celui-ci va se trouver plus proche de la périphérie 22 de la cuve fixe 2. Ainsi, la longueur de son bras 43 doit être réduite par rapport à celle du bras 33 du premier train de malaxage 3, afin que ses pales 34 n'entrent pas en collision avec la périphérie 22 de ladite cuve 2.Indeed, the at least one second mixing train 4 meshing with the second ring 7 of larger diameter, the latter will be located closer to the periphery 22 of the fixed tank 2. Thus, the length of its arm 43 must be reduced compared to that of the arm 33 of the first mixing train 3, so that its blades 34 do not collide with the periphery 22 of said tank 2.

Selon un mode de réalisation, le diamètre D3 de la trajectoire T3 parcourue par la au moins une pale 34 du premier train de malaxage 3 est tel que ladite au moins une pale 34 passe par l'axe A de la cuve 2.According to one embodiment, the diameter D3 of the path T3 traversed by the at least one blade 34 of the first mixing train 3 is such that said at least one blade 34 passes through the axis A of the tank 2.

Selon un mode de réalisation, le diamètre D4 de la trajectoire T4 parcourue par la au moins une pale 44 du au moins un deuxième train de malaxage 4 est tel que ladite au moins une pale 44 passe à proximité de la périphérie 22 de la cuve 2.According to one embodiment, the diameter D4 of the path T4 traversed by the at least one blade 44 of the at least one second mixing train 4 is such that said at least one blade 44 passes close to the periphery 22 of the tank 2 .

Ainsi, comme visible sur l'exemple de réalisation de la figure 2, l'ensemble de la surface du fond de la cuve fixe 2 sera balayé par les pales 34, 44 du premier 3 ou du au moins un deuxième 4 train de malaxage, ce qui garantit un mélange homogène des matériaux dans la cuve 2 lors du fonctionnement de l'appareil de malaxage 1.Thus, as visible on the example of the realization of the figure 2 , the entire surface of the bottom of the fixed tank 2 will be swept by the blades 34, 44 of the first 3 or of at least one second 4 mixing train, which guarantees a homogeneous mixture of materials in the tank 2 during the mixing process. operation of the mixing device 1.

Selon un mode de réalisation, le diamètre D4 de la trajectoire T4 parcourue par la au moins une pale 44 du au moins un deuxième train de malaxage 4 est strictement inférieur au diamètre D3 de la trajectoire T3 parcourue par la au moins une pale 34 du premier train de malaxage 3.According to one embodiment, the diameter D4 of the path T4 traveled by the at least one blade 44 of the at least one second mixing train 4 is strictly less than the diameter D3 of the path T3 traveled by the at least one blade 34 of the first mixing train 3.

Le différence entre le diamètre D3 et le diamètre D4 peut être supérieure ou égale à la différence entre le diamètre D6 de la première couronne 6 et le diamètre D7 de la deuxième couronne 7. Les arbres d'entraînement 31 du premier 3 et du au moins un deuxième 4 train de malaxage étant disposés sur le plateau rotatif 5 de sorte que les pales 34, 44 de chacun des trains de malaxage 3, 4 n'entrent pas en collision au cours de la rotation des trains de malaxage 3, 4.The difference between the diameter D3 and the diameter D4 can be greater than or equal to the difference between the diameter D6 of the first ring 6 and the diameter D7 of the second ring 7. The drive shafts 31 of the first 3 and of at least one second 4 mixing train being arranged on the rotary plate 5 so that the blades 34, 44 of each of the mixing trains 3, 4 n ' do not collide during the rotation of the mixing trains 3, 4.

Ainsi, comme visible sur l'exemple de réalisation de la figure 2, l'ensemble de la surface du fond de la cuve fixe 2 sera balayé par les pales 34, 44 du premier 3 ou du au moins un deuxième 4 train de malaxage lors du fonctionnement de l'appareil de malaxage 1, ce qui permet que l'ensemble des matériaux présents dans la cuve 2 soient malaxés simultanément. On garantit un mélange homogène des matériaux, sans que les pales 34, 44 du premier et du au moins un deuxième train de malaxage 3, 4 n'entrent en collision les unes avec les autres au cours de leurs parcours respectifs dans la cuve fixe 2.Thus, as visible on the example of the realization of the figure 2 , the entire surface of the bottom of the fixed tank 2 will be swept by the blades 34, 44 of the first 3 or of at least one second 4 mixing train during the operation of the mixing device 1, which allows that all of the materials present in the tank 2 are mixed simultaneously. A homogeneous mixture of materials is guaranteed, without the blades 34, 44 of the first and at least one second mixing train 3, 4 colliding with each other during their respective paths in the fixed tank 2 .

Selon un mode de réalisation, la première couronne 6 comporte des dentures 61 sur sa périphérie extérieure 62 ou sur sa périphérie intérieure 63, sur lesquelles vient engrener le pignon 32 du premier train de malaxage 3.According to one embodiment, the first ring gear 6 has teeth 61 on its outer periphery 62 or on its inner periphery 63, with which the pinion 32 of the first mixing train 3 engages.

Selon un mode de réalisation, la deuxième couronne 7 comporte des dentures 71 sur sa périphérie extérieure 72 ou sur sa périphérie intérieure 73, sur lesquelles vient engrener le pignon 42 du au moins un deuxième train de malaxage 4.According to one embodiment, the second ring gear 7 has teeth 71 on its outer periphery 72 or on its inner periphery 73, with which the pinion 42 of at least one second mixing train 4 engages.

Selon un mode de réalisation, le volume de la cuve 2 est supérieur ou égale à 3 m3.According to one embodiment, the volume of the tank 2 is greater than or equal to 3 m 3 .

En effet, l'appareil de malaxage 1 selon l'invention convient particulièrement pour assurer le mélange d'une quantité importante de matériaux, en ce qu'il permet de prévoir une pluralité de trains de malaxage 3, 4, et notamment de deuxièmes trains de malaxage 4, afin que l'ensemble des matériaux se trouvant dans la cuve fixe 2 soient malaxés simultanément, ce qui permet d'obtenir un mélange homogène.Indeed, the mixing apparatus 1 according to the invention is particularly suitable for ensuring the mixing of a large quantity of materials, in that it makes it possible to provide a plurality of mixing trains 3, 4, and in particular of second trains. mixing 4, so that all the materials in the fixed tank 2 are mixed simultaneously, which makes it possible to obtain a homogeneous mixture.

Selon un mode de réalisation, ledit appareil de malaxage 1 comprend au moins deux deuxièmes trains de malaxage 4.According to one embodiment, said mixing apparatus 1 comprises at least two second mixing trains 4.

Avantageusement, et comme visible sur l'exemple de réalisation de la figure 2, l'appareil de malaxe 1 comporte ainsi au moins trois trains de malaxage 3, 4, lesquels sont répartis sensiblement régulièrement autour de l'axe A de la cuve 2, de telle sorte que l'ensemble des matériaux se trouvant dans la cuve 2 soient malaxés simultanément, lors du fonctionnement dudit appareil de malaxage 1.Advantageously, and as visible on the example of the embodiment of figure 2 , the kneading apparatus 1 thus comprises at least three kneading trains 3, 4, which are distributed substantially regularly around the axis A of the tank 2, so that all the materials in the tank 2 are mixed simultaneously, during the operation of said mixing device 1.

Lorsque la cuve 2 est particulièrement volumineuse, par exemple de volume supérieur à 4 m3, il peut par exemple être prévu un premier train de malaxage 3 et au moins quatre deuxième trains de malaxage 4. De ce fait, afin que l'ensemble des matériaux se trouvant dans la cuve fixe 2 soient malaxés simultanément, lors du fonctionnement dudit appareil de malaxage 1, il peut être avantageusement prévu une troisième couronne circulaire dentée (non représentée sur les figures) avec un diamètre strictement supérieur au diamètre D6 de la première couronne 6 et au diamètre D7 de la deuxième couronne 7, sur laquelle vient engrener au moins un pignon d'un deuxième train de malaxage 4.When the tank 2 is particularly bulky, for example with a volume greater than 4 m 3 , there may for example be provided a first mixing train 3 and at least four second mixing trains 4. Therefore, so that all of the materials located in the fixed tank 2 are mixed simultaneously, during the operation of said mixing device 1, there can be advantageously provided a third toothed circular ring (not shown in the figures) with a diameter strictly greater than the diameter D6 of the first ring 6 and the diameter D7 of the second ring gear 7, with which at least one pinion of a second mixing train 4 engages.

Les différents trains de malaxage sont dimensionnés de telle sorte que leurs pales n'entrent pas en collision au cours du fonctionnement de l'appareil de malaxage 1.The various mixing trains are dimensioned so that their blades do not collide during the operation of the mixing apparatus 1.

Naturellement, d'autres modes de réalisation auraient pu être envisagés par l'Homme du métier sans pour autant sortir du cadre de l'invention définie par les revendications ci-après.Naturally, other embodiments could have been envisaged by a person skilled in the art without departing from the scope of the invention defined by the claims below.

NOMENCLATURENOMENCLATURE Appareil de malaxage selon l'état de la technique (figure 1)Mixing device according to the state of the art (figure 1)

1'.1 '.
Appareil de malaxageMixing device
2'.2 '.
CuveTank
A'.AT'.
AxeAxis
3'.3 '.
Premier train de malaxageFirst mixing train
T3'.T3 '.
TrajectoirePath
D3'.D3 '.
DiamètreDiameter
B'.B '.
AxeAxis
31'.31 '.
Arbre d'entraînementDrive shaft
32'.32 '.
PignonPinion
33'.33 '.
BrasArms
34'.34 '.
PaleBlade
4'.4 '.
Deuxième train de malaxageSecond mixing train
T4'.T4 '.
TrajectoirePath
D4'.D4 '.
DiamètreDiameter
C'.VS'.
AxeAxis
41'.41 '.
Arbre d'entraînementDrive shaft
42'.42 '.
PignonPinion
43'.43 '.
BrasArms
44'.44 '.
PaleBlade
45', 46'.45 ', 46'.
Pignon intermédiaireIntermediate gear
6'.6 '.
CouronneCrowned
D6'.D6 '.
DiamètreDiameter
Appareil de malaxage selon l'invention (figures 2 et 3)Mixing apparatus according to the invention (Figures 2 and 3)

1.1.
Appareil de malaxageMixing device
2.2.
Cuve fixeFixed tank
A.AT.
AxeAxis
21.21.
Conduit d'alimentationSupply duct
22.22.
PériphériePeriphery
3.3.
Premier train de malaxageFirst mixing train
B.B.
AxeAxis
T3.T3.
TrajectoirePath
D3.D3.
DiamètreDiameter
31.31.
Arbre d'entraînementDrive shaft
32.32.
PignonPinion
33.33.
BrasArms
L33.L33.
Longueur du brasArm length
34.34.
PaleBlade
37.37.
Tige de liaisonLink rod
4.4.
Deuxième train de malaxageSecond mixing train
T4.T4.
TrajectoirePath
D4.D4.
DiamètreDiameter
C.vs.
AxeAxis
41.41.
Arbre d'entraînementDrive shaft
42.42.
PignonPinion
43.43.
BrasArms
L43.L43.
Longueur du brasArm length
44.44.
PaleBlade
47.47.
Tige de liaisonLink rod
48.48.
Outil rapide à effet dispersifQuick dispersive effect tool
5.5.
Plateau rotatifTurntable
51.51.
MotoréducteurGear motor
52.52.
PignonPinion
53.53.
Couronne circulaire dentéeToothed circular crown
6.6.
Première couronneFirst crown
D6.D6.
DiamètreDiameter
61.61.
DenturesTeeth
62.62.
Périphérie extérieureExternal periphery
63.63.
Périphérie intérieureInner periphery
7.7.
Deuxième couronneSecond crown
D7.D7.
DiamètreDiameter
71.71.
DenturesTeeth
72.72.
Périphérie extérieureExternal periphery
73.73.
Périphérie intérieureInner periphery

Claims (11)

  1. A mixing apparatus (1) for wet or dry materials, in particular components for manufacturing concrete, comprising:
    - a stationary cylindrical tank (2) of axis (A)
    - a first mixing train (3) comprising a drive shaft (31) of axis (B), provided with a fixed pinion (32) centered on the axis (B) of the drive shaft (32), and at least one mixing blade (34), said blade (34) traveling around the axis (B) of the drive shaft (31) along a circular path (T3) of diameter (D3),
    - at least one second mixing train (4) comprising a drive shaft (41) of axis (C), provided with a fixed pinion (42) centered on the axis (C) of the drive shaft (41), and at least one mixing blade (44), said blade (44) traveling around the axis (C) of the drive shaft (41) along a circular path (T4) of of diameter (D4),
    - a rotary plate (5) centered on the axis (A) of the tank (2), driven in rotation about the axis (A) of the tank (2), the rotary plate (5) receiving the drive shaft (31, 41) of each of the first (3) and of the at least one second (4) mixing train, said mixing apparatus further comprising:
    - a first circular toothed ring gear (6) of diameter (D6), centered on the axis (A) of the tank (2) and immobile with respect to the tank (2), and
    - a second circular toothed ring gear (7) of diameter (D7), centered on the axis (A) of the tank (2), such that the diameter (D7) is strictly greater than the diameter (D6),
    the fixed pinion (33) on the drive shaft (31) of the first mixing train (3) meshing with the first circular ring gear (6), and the fixed pinion (43) on the drive shaft (41) of the at least one second mixing train (4) meshing with the second circular ring gear (7), characterized in that the second circular toothed ring gear (7) is immobile with respect to the tank (2).
  2. The mixing apparatus (1) according to claim 1, comprising a supply duct (21) arranged above the tank (2), centered on the axis (A) of the tank.
  3. The mixing apparatus (1) according to claim 1 or 2, wherein the first mixing train (3) comprises an arm (33) of length (L33), arranged perpendicularly to the drive shaft (32), centered on said drive shaft (32), two blades (34) being attached at each end of the arm (33) and the second mixing train (4) comprises an arm (43) of length (L43), arranged perpendicularly to the drive shaft (42), centered on said drive shaft (42), two blades (44) of the at least one second mixing train (4) being attached at each end of the arm (43).
  4. The mixing apparatus (1) according to claim 3, wherein the length (L33) of the arm (33) of the first mixing train (3) is strictly greater than the length (L43) of the arm (43) of the at least one second mixing train (4).
  5. The mixing apparatus (1) according to one of claims 1 to 4, wherein the diameter (D3) of the path (T3) traveled by the at least one blade (34) of the first mixing train (3) is such that said at least one blade (34) passes through the axis (A) of the tank (2).
  6. The mixing apparatus (1) according to one of claims 1 to 5, wherein the diameter (D4) of the path (T4) traveled by the at least one blade (44) of the at least one second mixing train (4) is such that said at least one blade (44) passes close to the periphery (22) of the tank (2).
  7. The mixing apparatus (1) according to one of claims 1 to 6, wherein the diameter (D4) of the path (T4) traveled by the at least one blade (44) of the at least one second mixing train (4) is strictly less than the diameter (D3) of the path (T3) traveled by the at least one blade (34) of the first mixing train (3), and the difference between the diameter (D3) and the diameter (D4) is greater than or equal to the difference between the diameter (D6) of the first ring gear (6) and the diameter (D7) of the second ring gear (7), the drive shafts (31, 41) of the first (3) and of the at least one second (4) mixing train being arranged on the rotary plate (5) in such a way that the blades (34, 44) of each of the mixing trains (3, 4) do not collide during the rotation of the mixing trains (3, 4).
  8. The mixing apparatus (1) according to one of claims 1 to 7, wherein the first ring gear (6) comprises teeth (61) on its outer periphery (62) or on its inner periphery (63), on which the pinion (32) of the first mixing train (3) meshes.
  9. The mixing apparatus (1) according to one of claims 1 to 8, wherein the second ring gear (7) comprises teeth (71) on its outer periphery (72) or on its inner periphery (73), on which the pinion (42) of the at least one second mixing arm (4) meshes.
  10. The mixing apparatus (1) according to one of claims 1 to 9, wherein the volume of the tank (2) is greater than or equal to 3 m3.
  11. The mixing apparatus (1) according to one of claims 1 to 10, comprising at least two second mixing trains (4).
EP19165308.8A 2018-04-09 2019-03-26 Mixing apparatus for wet or dry materials, in particular components for manufacturing concrete Active EP3552788B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1853058A FR3079770B1 (en) 2018-04-09 2018-04-09 MIXING APPARATUS FOR WET OR DRY MATERIALS, PARTICULARLY COMPONENTS FOR THE MANUFACTURE OF CONCRETE

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Publication Number Publication Date
EP3552788A1 EP3552788A1 (en) 2019-10-16
EP3552788B1 true EP3552788B1 (en) 2020-08-19

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EP19165308.8A Active EP3552788B1 (en) 2018-04-09 2019-03-26 Mixing apparatus for wet or dry materials, in particular components for manufacturing concrete

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EP (1) EP3552788B1 (en)
FR (1) FR3079770B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115431409B (en) * 2022-09-02 2023-12-15 黄淮学院 Automatic mortar stirring equipment
CN116351289B (en) * 2023-05-29 2023-08-18 无锡氟士德防腐科技有限公司 Chemical material stirring storage tank

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2527939B1 (en) * 1982-06-04 1985-12-06 Couvrot Laine Cie FIXED TANK MIXER
DK118393D0 (en) 1993-10-21 1993-10-21 Skako As MIXERS
DE102008033644A1 (en) * 2008-07-17 2010-01-21 Elba-Werk Maschinen-Gesellschaft Mbh Concrete mixer i.e. planetary counter-flow mixer, has drive arrangement arranged such that angular speed of rotation movement of mixer and angular speed of circulating movement of mixer are adjusted independent of each other
DE102014008067A1 (en) * 2014-05-27 2015-12-03 Ammann Elba Beton GmbH Device for mixing concrete

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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Publication number Publication date
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FR3079770B1 (en) 2020-03-27
FR3079770A1 (en) 2019-10-11

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