EP0307318A1 - Device, especially for uniformly distributing solid particles and/or liquids, and unit having such a device - Google Patents
Device, especially for uniformly distributing solid particles and/or liquids, and unit having such a device Download PDFInfo
- Publication number
- EP0307318A1 EP0307318A1 EP88402268A EP88402268A EP0307318A1 EP 0307318 A1 EP0307318 A1 EP 0307318A1 EP 88402268 A EP88402268 A EP 88402268A EP 88402268 A EP88402268 A EP 88402268A EP 0307318 A1 EP0307318 A1 EP 0307318A1
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- EP
- European Patent Office
- Prior art keywords
- primary
- shaft
- center
- crown
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 239000002245 particle Substances 0.000 title claims abstract description 13
- 239000007787 solid Substances 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 title claims abstract description 9
- 239000012263 liquid product Substances 0.000 claims abstract description 6
- 239000012265 solid product Substances 0.000 claims abstract description 3
- 239000000047 product Substances 0.000 claims description 28
- 238000005507 spraying Methods 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 4
- 210000003462 vein Anatomy 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 239000003595 mist Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 208000002991 Ring chromosome 4 syndrome Diseases 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 230000014616 translation Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/70—Spray-mixers, e.g. for mixing intersecting sheets of material
- B01F25/74—Spray-mixers, e.g. for mixing intersecting sheets of material with rotating parts, e.g. discs
-
- 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
- B01F27/40—Mixers with rotor-rotor system, e.g. with intermeshing teeth
- B01F27/41—Mixers with rotor-rotor system, e.g. with intermeshing teeth with the mutually rotating surfaces facing each other
- B01F27/411—Mixers with rotor-rotor system, e.g. with intermeshing teeth with the mutually rotating surfaces facing each other provided with intermeshing elements
Definitions
- the present invention relates to a device in particular for uniformly distributing solid and / or liquid particles in order to deposit regular, precise and uniform layers of pulverulent products, or to make mixtures of pulverulent products, of liquid products or of pulverulent products in liquid products.
- the invention also relates to an assembly comprising such a device.
- a device for bringing fluid bodies and / or solid bodies into mutual contact, which comprises a turntable, on different surfaces of which two veins of fluid bodies and / or solid bodies are accelerated and repressed, under the effect of centrifugal force, on the periphery of the plate so as to come into contact with each other. It is preferable to use the opposite surfaces of the same tray.
- one of the veins is constituted by a solid body in the form of powder, which is brought, by a downward movement, onto the upper surface of a tray with horizontal centrifugal pallets, while the other vein is formed by a gas and directed towards the lower face of the plate whose diameter is much greater than that of the supply conduits of each vein.
- the gas stream rises around the periphery of the plate, taking with it, towards a fluidizing section located at the top of the device, the powder leaving the upper surface of the plate at this periphery.
- One of the aims of the present invention is therefore to provide a device in particular for uniformly distributing solid and / or liquid particles which can also simultaneously make it possible to produce homogeneous mixtures and / or to reduce the size of the particles.
- Another object of the invention is to provide such an apparatus which is energy efficient and easy to maintain.
- a device in particular for uniformly distributing solid and / or liquid particles which is characterized, according to the present invention, by the fact that it comprises, on the one hand, a primary shaft, vertical and hollow, which is rotated and whose lower end comprises a substantially horizontal primary crown whose lower face is provided with vertical teeth arranged in concentric circles, and, on the other hand, a secondary shaft, vertical and hollow, inside which is coaxially disposed said primary shaft, which is rotated in a direction opposite to the direction of rotation of said primary shaft, and the lower end of which comprises a cylindrical cage constituted by a secondary crown, integral with said lower end and of greater width than said primary crown and by a disc connected to the underside of said secondary crown by at least three bars, said disc comprising at its upper face, which is opposite the lower face of said secondary crown, on the one hand, vertical teeth arranged concentrically and staggered with respect to those which comprises said primary crown which is located inside laughing of said cylindrical cage, and,
- this device also comprises a removable tube arranged coaxially inside said primary shaft of which it is integral in rotation and the circular anvil has a diameter at least equal to that of said removable tube.
- the removable tube has a screw over its entire height which is rotated.
- the removable tube is arranged inside the primary shaft of which it is integral in rotation, and its lower end describes a crown above the circular anvil, the diameter of which is at least equal to the diameter outside of the crown thus described.
- This device can be mounted on a horizontal plate which it crosses and to the lower face of which is fixed a cylindrical-conical skirt which widens towards the cylindrical cage and the lower edge of which is substantially lower than the disk of said cage.
- this skirt has in its cylindrical part a zone of large openings, and the secondary shaft in a zone situated under this zone of large openings, comprises a propeller made up of at least two blades rotating in the space delimited by this secondary shaft and the cylindrical part of this skirt.
- a means for stopping the particles is located on the underside of the horizontal plate; it consists of a set of square frames of the same axis as the secondary shaft, on each of which are hung hanging screens whose surface is proportional to the distribution on the ground of solid particles.
- these screens are arranged symmetrically with respect to the diagonals of all the frames and to the perpendicular bisectors on each side of these frames.
- this set consists of five frames, numbered from 1 to 5 from the center, the width of the half-screen located at the corner of the fifth frame being defined by an angle at the center of ⁇ / 72, that of the screen located on the fourth frame by an angle at the center of ⁇ / 45, that of the screen located on the third frame by an angle at the center of ⁇ / 60, that of the screen located on the second frame by an angle at the center of ⁇ / 90, that of the screen located on the first frame being defined by an angle of ⁇ / 180 and that of the half-screen located on the fifth frame being defined by an angle at the center of ⁇ / 72, all these angles at the center being contiguous, this pattern thus defined being repeated twice without discontinuity.
- the disc of the cylindrical cage has a central opening and the circular anvil is arranged on fins determining between them passages for the flow of the product sucked through the central opening.
- the present invention also relates to an assembly which is constituted by a truncated-pyramidal enclosure the upper face of which is constituted by the horizontal plate provided with the device described above comprising a cylindro-conical skirt and a propeller, and the underside of which is open above a means for collecting the treated product.
- the device comprises, on the one hand, a primary shaft 1, vertical and hollow and on the other hand, a secondary shaft 2 vertical and hollow in which is disposed coaxially the primary shaft 1.
- a primary shaft 1 vertical and hollow
- a secondary shaft 2 vertical and hollow in which is disposed coaxially the primary shaft 1.
- the primary shaft 1 has at its lower end a substantially horizontal primary ring 4 whose lower face is provided with vertical teeth 5. These are arranged in concentric circles. This primary shaft 1 is rotated by a first motor 6 thanks to a belt 7 cooperating with a pulley 8 secured to the upper end of the primary shaft 1.
- the secondary shaft 2 has at its lower part a cylindrical cage 10 enclosing the primary crown 4.
- This cylindrical cage 10 is constituted by a secondary crown 11 secured to the lower end of the secondary shaft 2 and of greater width than the primary crown 4, and by a disc 12 connected to the underside of the secondary crown 11 by four bars 13 in the present exemplary embodiment.
- This disc 12 has on its upper face, that is to say facing the lower face of the secondary crown 11, vertical teeth 14 which are arranged concentrically and staggered with respect to the teeth 5 of the primary crown 4: during the rotation in the opposite direction of the two primary 1 and secondary 2 shafts, the teeth of a crown describe circles arranged between those described by the teeth of the other crown.
- the disc 12 has at its center a circular anvil 15 of the same axis as it: this anvil 15 is located at the top of a rod 16.
- the secondary shaft 2 is rotated, but in the opposite direction to that of the primary shaft 1, by a second motor 17 by means of a belt 18 cooperating with a pulley 19 located at the end of the secondary shaft 2 .
- This upper end is located below the pulley 8 carried by the primary shaft 1.
- the two motors 6 and 17 can form only one: it suffices that the single motor has two output shafts rotating at different speeds to drive each primary 1 and secondary 2 shaft separately.
- the device also comprises a removable tube 20 which is arranged coaxially inside the primary shaft 1 of which it is integral in rotation.
- the lower end of this removable tube 20 opens out above the circular anvil 15, the diameter of which is barely greater than that of the removable tube 20.
- the removable tube 20 includes a funnel 21 located under the lower opening 22 of a frustoconical hopper 23 containing the product or products to be treated. These are introduced into this hopper 23 by one or more feed troughs 24.
- the opening 22 is open, the pulverulent products fall into the removable tube 20 which is in rotation just like the primary 1 and secondary 2 shafts : thanks to the suction created by this rotation, the descent of the products is facilitated.
- the funnel 21 and / or the hopper 23 have an air inlet.
- this removable tube 20 is not essential, the same result would be obtained by using the primary shaft 1 as a tube, but because of its removable nature, the removable tube 20 allows greater flexibility of use, as well as the will have easily understood the skilled person.
- a cylindrical screw 25 which is rotated by a third motor 26 located on the hopper 23, in this example of rotation.
- the cylindrical screw 25 also passes through the frustoconical hopper 23.
- FIG. 2 This figure also relates to an alternative embodiment for the removable tube 20.
- the latter is constituted by a coaxial obviouslye20 party and a lower portion 20 b vertical and with an axis parallel to the axis of the primary shaft 1. Consequently, during its rotation, the lower part 20 b describes a cylinder: therefore the product falls according to a crown 46 on the circular anvil 15.
- cylindrical-conical skirt 27 which is fixed to a horizontal plate 28 through which the device passes.
- This plate 28 can be the upper wall of an enclosure 47, the lower part of which is open above a device 48 for collecting the treated product.
- the cylindrical-conical skirt 27 widens towards the cylindrical cage 10 and its lower edge is situated in a plane slightly lower than that of the disc 12.
- the device comprises a propeller 29 whose blades are fixed on the secondary shaft 2 and outside.
- the cylindrical part 27 a of the cylindrical-conical skirt has large openings in its zone situated above the propeller 29 so as to allow gas circulation as shown in FIG. 3.
- the tronco-pyramidal enclosure 47 has a square cross-section and in fact constitutes a relaxation chamber.
- This mist is deposited by gravity on a means 48 intended to collect the products thus treated.
- This means 48, on which the products are therefore perfectly spread and in a determined quantity, is generally a conveyor belt.
- an assembly 30 consisting of metal frames in a plane slightly greater than that of the secondary crown 11.
- this assembly consists of five frames 31 to 35, on which are hung screens 36 whose length increases from the inner frame, or first frame 31, to the outer frame or fifth frame 35. These screens make it possible to stop the particles expelled from the cylindrical cage 10 and have a surface proportional to the distribution surface on the ground, constituted by the means 48 for collecting the treated product.
- the five frames 31 to 35 are square and have as axis of symmetry the axis of rotation of the device. They are suspended under the horizontal plate 28 by known means, the latter being part of the enclosure 47 already described.
- the screens are arranged symmetrically with respect to the diagonals and the perpendicular bisectors on each side of these frames. On a half-side, the following pattern is repeated twice continuously: a half-side therefore has three patterns.
- the width of the first half-screen 37 located at the corner of the fifth frame 35 is defined by an angle at the center of ⁇ / 72; that of the screen 38 located on the fourth frame 34 is defined by an angle at the center of ⁇ / 45; that of the screen 39 located on the third frame 33 is defined by an angle at the center of ⁇ / 60; that of the screen 40 located on the second frame 32 is defined by an angle at the center of ⁇ / 90; that of the screen 41 located on the first frame 31 is defined by an angle at the center of ⁇ / 180; and that of the second half-screen 42 located on the fifth frame 35 is defined by an angle at the center of ⁇ / 72.
- FIG 6 there is shown a cylindrical cage 10 more particularly suitable for mixing liquids or liquids and solids.
- the disc 12 has a central opening 43 externally limited by a cylindrical wall 44.
- the circular anvil 15 is mounted on fins 45 determining between them passages for the flow of the fluid sucked through the opening 43.
- the device according to the present invention can be used for mixing, homogenizing, grinding, rubbing, spraying and / or spreading solid and / or liquid products. Therefore it can be used in a large number of technical fields.
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- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Manufacturing Of Micro-Capsules (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Crushing And Pulverization Processes (AREA)
- Crushing And Grinding (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Auxiliary Methods And Devices For Loading And Unloading (AREA)
- Lubricants (AREA)
- Detergent Compositions (AREA)
- Fertilizers (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
La présente invention est relative à un dispositif notamment pour répartir uniformément des particules solides et/ou liquides afin de déposer des couches régulières, précises et uniformes de produits pulvérulents, ou de réaliser des mélanges de produits pulvérulents, de produits liquides ou de produits pulvérulents dans des produits liquides. L'invention concerne également un ensemble comportant un tel dispositif.The present invention relates to a device in particular for uniformly distributing solid and / or liquid particles in order to deposit regular, precise and uniform layers of pulverulent products, or to make mixtures of pulverulent products, of liquid products or of pulverulent products in liquid products. The invention also relates to an assembly comprising such a device.
D'après le document FR-A-1.311.922, il est connu un dispositif pour mettre en contact réciproque les corps fluides et/ou des corps solides, qui comprend un plateau tournant, sur différentes surfaces duquel deux veines de corps fluides et/ou de corps solides sont accélérées et refoulées, sous l'effet de la force centrifuge, à la périphérie du plateau de manière à entrer au contact l'une avec l'autre. Il est préférable d'utiliser les surfaces opposées d'un même plateau. Selon un mode de réalisation, l'une des veines est constituée par un corps solide en forme de poudre, qui est amené, par un mouvement descendant, sur la surface supérieure d'un plateau à palettes centrifuges horizontales, cependant que l'autre veine est constituée par un gaz et dirigée vers la face inférieure du plateau dont le diamètre est très supérieur à celui des conduits d'amenée de chaque veine. Le courant de gaz monte autour de la périphérie du plateau en emportant avec lui, vers une section fluidifiante située au sommet du dispositif, la poudre quittant la surface supérieure du plateau à cette périphérie. Un tel dispositif ne permet que la seule mise en contact continue d'un corps fluide avec un corps solide.From document FR-A-1.311.922, a device is known for bringing fluid bodies and / or solid bodies into mutual contact, which comprises a turntable, on different surfaces of which two veins of fluid bodies and / or solid bodies are accelerated and repressed, under the effect of centrifugal force, on the periphery of the plate so as to come into contact with each other. It is preferable to use the opposite surfaces of the same tray. According to one embodiment, one of the veins is constituted by a solid body in the form of powder, which is brought, by a downward movement, onto the upper surface of a tray with horizontal centrifugal pallets, while the other vein is formed by a gas and directed towards the lower face of the plate whose diameter is much greater than that of the supply conduits of each vein. The gas stream rises around the periphery of the plate, taking with it, towards a fluidizing section located at the top of the device, the powder leaving the upper surface of the plate at this periphery. Such a device allows only the sole continuous contact of a fluid body with a solid body.
On connaît également le dispositif décrit dans le document FR-A-950.579 destiné à pulvériser et atomiser des produits liquides et même pâteux. Ce dispositif comporte deux ensembles rotatifs tournant en sens inverse, chacun comportant un ou plusieurs plateaux de forme conique sur lesquels vient s'écouler et s'étirer la masse à pulvériser. Un tel dispositif ne permet pas de réaliser des mélanges, mais seulement de réduire la taille des particules.Also known is the device described in document FR-A-950.579 intended for spraying and atomizing liquid and even pasty products. This device comprises two rotary assemblies rotating in opposite directions, each comprising one or more plates of conical shape on which comes to flow and stretch the mass to be sprayed. Such a device does not make it possible to make mixtures, but only to reduce the size of the particles.
Il est également connu des épandeurs classiques pour produits pulvérulents permettant de couvrir une surface déterminée : ceux-ci nécessitent le déplacement en transla tion d'une bande étroite, ce qui a notamment pour inconvénient une irrégularité dans la répartition et dans l'épaisseur de la couche, et de rendre impossible la répartition d'une faible quantité de produits pulvérulents sur une grande surface.It is also known from conventional spreaders for pulverulent products which make it possible to cover a determined surface: these require movement in transla tion of a narrow strip, which has the particular disadvantage of an irregularity in the distribution and in the thickness of the layer, and making it impossible to distribute a small quantity of powdered products over a large area.
Quant aux mélangeurs classiques, ils nécessitent un temps de fonctionnement qui est directement en rapport avec le degré d'homogénéisation souhaité : ceci entraîne d'importants frais énergétiques et de maintenance.As for conventional mixers, they require an operating time which is directly related to the degree of homogenization desired: this involves significant energy and maintenance costs.
Aussi un des buts de la présente invention est-il de fournir un dispositif notamment pour répartir uniformément des particules solides et/ou liquides qui peut, également, simultanément permettre de réaliser des mélanges homogènes et/ou de réduire la taille des particules.One of the aims of the present invention is therefore to provide a device in particular for uniformly distributing solid and / or liquid particles which can also simultaneously make it possible to produce homogeneous mixtures and / or to reduce the size of the particles.
Un autre but de l'invention est de fournir un tel appareil qui est économe sur le plan énergétique et d'un entretien aisé.Another object of the invention is to provide such an apparatus which is energy efficient and easy to maintain.
Ces buts, ainsi que d'autres qui apparaîtront par la suite, sont atteints par un dispositif notamment pour répartir uniformément des particules solides et/ou liquides, qui est caractérisé, selon la présente invention, par le fait qu'il comprend, d'une part, un arbre primaire, vertical et creux, qui est entraîné en rotation et dont l'extrémité inférieure comporte une couronne primaire sensiblement horizontale dont la face inférieure est munie de dents verticales disposées selon des cercles concentriques, et, d'autre part, un arbre secondaire, vertical et creux, à l'intérieur duquel est coaxialement disposé ledit arbre primaire, qui est entraîné en rotation dans un sens contraire au sens de rotation dudit arbre primaire, et dont l'extrémité inférieure comporte une cage cylindrique constituée par une couronne secondaire, solidaire de ladite extrémité inférieure et de plus grande largeur que ladite couronne primaire et par un disque relié à la face inférieure de ladite couronne secondaire par au moins trois barreaux, ledit disque comportant à sa face supérieure, qui est en regard de la face inférieure de ladite couronne secondaire, d'une part, des dents verticales disposées concentriquement et en quinconce par rapport à celles que comporte ladite couronne primaire qui est située à l'inté rieur de ladite cage cylindrique, et, d'autre part, en son centre une enclume circulaire de même axe que lui et dont le diamètre est au moins égal à celui dudit arbre primaire.These aims, as well as others which will appear subsequently, are achieved by a device in particular for uniformly distributing solid and / or liquid particles, which is characterized, according to the present invention, by the fact that it comprises, on the one hand, a primary shaft, vertical and hollow, which is rotated and whose lower end comprises a substantially horizontal primary crown whose lower face is provided with vertical teeth arranged in concentric circles, and, on the other hand, a secondary shaft, vertical and hollow, inside which is coaxially disposed said primary shaft, which is rotated in a direction opposite to the direction of rotation of said primary shaft, and the lower end of which comprises a cylindrical cage constituted by a secondary crown, integral with said lower end and of greater width than said primary crown and by a disc connected to the underside of said secondary crown by at least three bars, said disc comprising at its upper face, which is opposite the lower face of said secondary crown, on the one hand, vertical teeth arranged concentrically and staggered with respect to those which comprises said primary crown which is located inside laughing of said cylindrical cage, and, on the other hand, in its center a circular anvil of the same axis as it and whose diameter is at least equal to that of said primary shaft.
Selon un mode de réalisation préféré de l'invention, ce dispositif comprend également un tube amovible disposé coaxialement à l'intérieur dudit arbre primaire dont il est solidaire en rotation et l'enclume circulaire a un diamètre au moins égal à celui dudit tube amovible.According to a preferred embodiment of the invention, this device also comprises a removable tube arranged coaxially inside said primary shaft of which it is integral in rotation and the circular anvil has a diameter at least equal to that of said removable tube.
Avantageusement, le tube amovible comporte une vis sur toute sa hauteur qui est entraînée en rotation.Advantageously, the removable tube has a screw over its entire height which is rotated.
Selon un variante, le tube amovible est disposé à l'intérieur de l'arbre primaire dont il est solidaire en rotation, et son extrémité inférieure décrit une couronne au-dessus de l'enclume circulaire, dont le diamètre est au moins égal au diamètre extérieur de la couronne ainsi décrite.According to a variant, the removable tube is arranged inside the primary shaft of which it is integral in rotation, and its lower end describes a crown above the circular anvil, the diameter of which is at least equal to the diameter outside of the crown thus described.
Ce dispositif peut être monté sur une plaque horizontale qu'il traverse et à la face inférieure de laquelle est fixée une jupe cylindro-conique s'évasant vers la cage cylindrique et dont le bord inférieur est sensiblement plus bas que le disque de ladite cage.This device can be mounted on a horizontal plate which it crosses and to the lower face of which is fixed a cylindrical-conical skirt which widens towards the cylindrical cage and the lower edge of which is substantially lower than the disk of said cage.
Selon une variante de réalisation, cette jupe comporte dans sa partie cylindrique une zone de larges ouvertures, et l' arbre secondaire dans une zone située sous cette zone de larges ouvertures, comporte une hélice constituée d'au moins deux pales tournant dans l'expace délimité par cet arbre secondaire et la partie cylindrique de cette jupe.According to an alternative embodiment, this skirt has in its cylindrical part a zone of large openings, and the secondary shaft in a zone situated under this zone of large openings, comprises a propeller made up of at least two blades rotating in the space delimited by this secondary shaft and the cylindrical part of this skirt.
Avantageusement, un moyen d'arrêt des particules est situé à la face inférieure de la plaque horizontale; il est constitué d'un ensemble de cadres carrés de même axe que l'arbre secondaire, sur chacun desquels sont montés des écrans pendants dont la surface est proportionnelle à la répartition au sol des particules solides.Advantageously, a means for stopping the particles is located on the underside of the horizontal plate; it consists of a set of square frames of the same axis as the secondary shaft, on each of which are hung hanging screens whose surface is proportional to the distribution on the ground of solid particles.
Selon un mode de réalisation préféré, ces écrans sont disposées symétriquement par rapport aux diagonales de l'ensemble des cadres et aux médiatrices de chaque côté de ces cadres. Dans le cas où cet ensemble est constitué par cinq cadres, numérotés de 1 à 5 à partir du centre, la largeur du demi-écran situé au coin du cinquième cadre étant défini par un angle au centre de π/72, celle de l'écran situé sur le quatrième cadre par un angle au centre de π/45, celle de l'écran situé sur le troisième cadre par un angle au centre de π/60, celle de l'écran situé sur le deuxième cadre par un angle au centre de π/90, celle de l'écran situé sur le premier cadre étant défini par un angle de π/180 et celle du demi-écran situé sur le cinquième cadre étant définie par un angle au centre de π/72, tous ces angles au centre étant contigus, ce motif ainsi défini étant répété deux fois sans discontinuité.According to a preferred embodiment, these screens are arranged symmetrically with respect to the diagonals of all the frames and to the perpendicular bisectors on each side of these frames. In the case where this set consists of five frames, numbered from 1 to 5 from the center, the width of the half-screen located at the corner of the fifth frame being defined by an angle at the center of π / 72, that of the screen located on the fourth frame by an angle at the center of π / 45, that of the screen located on the third frame by an angle at the center of π / 60, that of the screen located on the second frame by an angle at the center of π / 90, that of the screen located on the first frame being defined by an angle of π / 180 and that of the half-screen located on the fifth frame being defined by an angle at the center of π / 72, all these angles at the center being contiguous, this pattern thus defined being repeated twice without discontinuity.
Selon un mode de réalisation particulier, le disque de la cage cylindrique comporte une ouverture centrale et l'enclume circulaire est disposée sur des ailettes déterminant entre elles des passages pour l'écoulement du produit aspiré par l'ouverture centrale.According to a particular embodiment, the disc of the cylindrical cage has a central opening and the circular anvil is arranged on fins determining between them passages for the flow of the product sucked through the central opening.
Ainsi qu'il a été dit précédemment, la présente inventtion concerne également un ensemble qui est constitué par une enceinte tronco-pyramidale dont la face supérieure est constitué par la plaque horizontale munie du dispositif décrit ci-avant comportant une jupe cylindro - conique et une hélice, et dont la face inférieure est ouverte au-dessus d'un moyen pour recueillir le produit traité.As has been said previously, the present invention also relates to an assembly which is constituted by a truncated-pyramidal enclosure the upper face of which is constituted by the horizontal plate provided with the device described above comprising a cylindro-conical skirt and a propeller, and the underside of which is open above a means for collecting the treated product.
La description qui va suivre et qui ne présente aucun caractére limitatif, doit être lue en regard des figures annexées, parmi lesquelles :
- - la figure 1 représente en coupe longitudinale un ensemble comportant un dispositif selon la présente invention,
- - la figure 2 représente en coupe longitudinale un ensemble comportant une variante de réalisation de ce même dispositif,
- - la figure 3 correspond à la figure 1 et montre l'ensemble dans son entier lors d'une utilisation du dispositif comme pulvérisateur et épandeur de produits pulvérulents ou liquides,
- - la figure 4 est une vue schématique en coupe longitudinale de la partie inférieure du dispositif selon un autre mode de réalisation,
- - la figure 5 est une demi-vue en coupe selon la ligne V-V de la figure 4, et
- - la figure 6 est une vue en coupe longitudinale d'une variante de réalisation de la partie inférieure du dispositif.
- FIG. 1 shows in longitudinal section an assembly comprising a device according to the present invention,
- FIG. 2 represents in longitudinal section an assembly comprising an alternative embodiment of this same device,
- FIG. 3 corresponds to FIG. 1 and shows the whole as a whole when the device is used as a sprayer and spreader of pulverulent or liquid products,
- FIG. 4 is a schematic view in longitudinal section of the lower part of the device according to another embodiment,
- FIG. 5 is a half-view in section along the line VV of FIG. 4, and
- - Figure 6 is a longitudinal sectional view of an alternative embodiment of the lower part of the device.
Selon la présente invention, le dispositif comprend, d'une part, un arbre primaire 1, vertical et creux et d'autre part, un arbre secondaire 2 vertical et creux dans lequel est disposé coaxialement l'arbre primaire 1. Ces deux arbres sont maintenus en position de façon connue dans un bâti 3 qui ne sera pas décrit plus avant.According to the present invention, the device comprises, on the one hand, a
L'arbre primaire 1 comporte à son extrémité inférieure une couronne primaire 4 sensiblement horizontale dont la face inférieure est munie de dents verticales 5. Celles-ci sont disposées selon des cercles concentriques. Cet arbre primaire 1 est entraîné en rotation par un premier moteur 6 grâce à une courroie 7 coopérant avec une poulie 8 solidaire de l'extrémité supérieure l'arbre primaire 1.The
L'arbre secondaire 2 comporte à sa partie inférieure une cage cylindrique 10 renfermant la couronne primaire 4. Cette cage cylindrique 10 est constituée par une couronne secondaire 11 solidaire de l'extrémité inférieure de l'arbre secondaire 2 et de plus grande largeur que la couronne primaire 4, et par un disque 12 relié à la face inférieure de la couronne secondaire 11 par quatre barreaux 13 dans le présent exemple de réalisation. Ce disque 12 comporte sur sa face supérieure, c'est-à-dire en regard de la face inférieure de la couronne secondaire 11, des dents verticales 14 qui sont disposées concentriquement et en quinconce par rapport aux dents 5 de la couronne primaire 4 : lors de la rotation en sens inverse des deux arbres primaire 1 et secondaire 2, les dents d'une couronne décrivent des cercles disposés entre ceux décrits par les dents de l'autre couronne. De plus, le disque 12 comporte en son centre une enclume circulaire 15 de même axe que lui : cette enclume 15 est située au sommet d'une tige 16.The
L'arbre secondaire 2 est entraîné en rotation, mais dans un sens inverse à celui de l'arbre primaire 1, par un second moteur 17 grâce à une courroie 18 coopérant avec une poulie 19 située à l'extrémité de l'arbre secondaire 2. Cette extrémité supérieure est située au-dessous de la poulie 8 portée par l'arbre primaire 1. Pour des raisons d'encombrement notamment, les deux moteurs 6 et 17 peuvent n'en former qu 'un : il suffit que le moteur unique possède deux arbres de sortie tournant à des vitesses différentes afin d'entraîner séparement chaque arbre primaire 1 et secondaire 2.The
Selon le présent exemple de réalisation, le dispositif comprend également un tube amovible 20 qui est disposé coaxialement à l'intérieur de l'arbre primaire 1 dont il est solidaire en rotation. L'extrémité inférieure de ce tube amovible 20 débouche au-dessus de l'enclume circulaire 15 dont le diamètre est à peine supérieur à celui du tube amovible 20.According to the present embodiment, the device also comprises a
A sa partie supérieure, le tube amovible 20 comporte un entonnoir 21 situé sous l'ouverture inférieure 22 d'une trémie tronconique 23 renfermant le ou les produits à traiter. Ceux-ci sont introduits dans cette trémie 23 par un ou plusieurs augets d'alimentation 24. Lorsque l'ouverture 22 est ouverte, les produits pulvérulents tombent dans le tube amovible 20 qui est en rotation de même que les arbres primaire 1 et secondaire 2 : grâce à l'aspiration créée par cette rotation, la descente des produits est facilitée. L'entonnoir 21 et/ou la trémie 23 comportent une entrée d'air.At its upper part, the
Du fait de la rotation du tube amovible 20, les produits ont tendance à se rassembler sur sa paroi interne et donc de tomber sur l'enclume 15 en formant sensiblement une couronne 46.Due to the rotation of the
Certes, ce tube amovible 20 n'est pas indispensable, le même résultat serait obtenu en utilisant l'arbre primaire 1 comme tube, mais du fait de son amovibilité, le tube amovible 20 permet une plus grande souplesse d'emploi, ainsi que l'aura aisément compris l'homme du métier.Admittedly, this
Les produits une fois sur l'enclume circulaire 15 sont expulsés sous l'action de la force centrifuge hors de la cage cylindrique 10 et éventuellement fragmentés par les dents 5 et 14 en rotation. Cette expulsion est ainsi freinée par l'ensemble des dents qui réalisent un freinage artificiel . Ce freinage et la fragmentation ou le cisaillement répétitifs du produit par les dents verticales 5 et 14 améliorent encore la répartition du produit à la périphérie de la cage cylindrique 10.The products once on the
Pour certains produits, il peut être nécessaire de disposer à l'intérieur du tube amovible 20, une vis cylindrique 25 qui est entraînée en rotation par un troisième moteur 26 situé sur la trémie 23, dans cet exemple de rotation. La vis cylindrique 25 traverse également, dans ce cas, la trémie tronconique 23.For certain products, it may be necessary to have inside the
Mais comme représenté sur la figure 2, on peut aussi alimenter directement l'entonnoir 21. Cette figure est également relative à une variante de réalisation concernant le tube amovible 20. Ce dernier est constitué par une partie supérieure20a coaxiale et par une partie inférieure 20b verticale et d'axe parallèle à l'axe de l'arbre primaire 1. En conséquence, lors de sa rotation, la partie inférieure 20b décrit un cylindre : de ce fait le produit tombe selon une couronne 46 sur l'enclume circulaire 15.But as shown in Figure 2, one can also directly supply the
Pour certains produits et/ou certaines applications, il peut être nécessaire d'entourer la partie inférieure du dispositif par une jupe 27 cylindro-conique qui est fixée sur une plaque horizontale 28 traversée par le dispositif. Cette plaque 28 peut être la paroi supérieure d'une enceinte 47 dont la partie inférieure est ouverte au-dessus d'un dispositif 48 pour recueillir le produit traité. La jupe cylindro-conique 27 s'évase vers la cage cylindrique 10 et son bord inférieur est situé dans un plan légèrement inférieur à celui du disque 12.For certain products and / or certain applications, it may be necessary to surround the lower part of the device with a cylindrical-
Afin d'améliorer le mélange de produits et leur épandage, le dispositif comporte une hélice 29 dont les pales sont fixées sur l'arbre secondaire 2 et à l'extérieur. Dans ce cas, la partie cylindrique 27a de la jupe cylindro-conique comporte de larges ouvertures dans sa zone située au-dessus de l'hélice 29 de façon à permettre une circulation gazeuse comme représentée sur la figure 3.In order to improve the mixture of products and their spreading, the device comprises a
L'enceinte 47 tronco-pyramidale a pour section transversale un carré et constitue en fait une chambre de détente. La circulation d'air créée par l'hélice 29, qui est matérialisée sur la figure 3 par des flèches, entraîne une dispersion parfaite dans un plan horizontal des produits issus de la cage cylindrique 10 : on obtient ainsi une répartition parfaite et homogène, tel un brouillard, de ces produits dans l'enceinte 47. Ce brouillard se dépose par gravité sur un moyen 48 destiné à recueillir les produits ainsi traités. Ce moyen 48, sur lequel les produits sont donc parfaitement épandus et en quantité déterminée, est en général une bande transporteuse.The tronco-
Selon un autre mode de réalisation représenté sur les figures 4 et 5, on dispose un ensemble 30 constitué par des cadres métalliques dans un plan légèrement supérieur à celui de la couronne secondaire 11. Dans le présent exemple de réalisation cet ensemble est constitué par cinq cadres 31 à 35, sur lesquels sont accrochés des écrans 36 dont la longueur augmente du cadre intérieur, ou premier cadre 31, au cadre extérieur ou cinquième cadre 35. Ces écrans permettent d'arrêter les particules expulsées de la cage cylindrique 10 et ont une surface proprotionnelle à la surface de répartition au sol, constitué par le moyen 48 pour recueillir le produit traité.According to another embodiment shown in Figures 4 and 5, there is an
Les cinq cadres 31 à 35 sont carrés et ont pour axe de symétrie l'axe de rotation du dispositif. Ils sont suspendus sous la plaque horizontale 28 par des moyens connus, cette dernière faisant partie de l'enceinte 47 déjà décrite. Les écrans sont disposés de façon symétrique par rapport aux diagonales et aux médiatrices de chaque côté de ces cadres. Sur un demi-côté, le motif ci-après est répété deux fois continûment : un demi-côté comporte donc trois motifs.The five
La largeur du premier demi-écran 37 situé au coin du cinquième cadre 35 est défini par un angle au centre de π/72; celle de l'écran 38 situé sur le quatrième cadre 34 est définie par un angle au centre de π/45; celle de l'écran 39 située sur le troisième cadre 33 est définie par un angle au centre de π/60; celle de l'écran 40 situé sur le deuxième cadre 32 est définie par un angle au centre de π/90; celle de l'écran 41 situé sur le premier cadre 31 est défini par un angle au centre de π/180; et celle du second demi-écran 42 situé sur le cinquième cadre 35 est défini par un angle au centre de π/72.The width of the first half-
Sur la figure 6, on a représenté une cage cylindrique 10 plus particulièrement adaptée au mélange de liquides ou de liquides et de solides. Dans ce cas le disque 12 comporte une ouverture centrale 43 limitée extérieurement par une paroi cylindrique 44. L'enclume circulaire 15 est montée sur des ailettes 45 déterminant entre elles des passages pour l'écoulement du fluide aspiré au travers de l'ouverture 43.In Figure 6, there is shown a
Ainsi qu'on aura pu le comprendre, le dispositif selon la présente invention peut être utilisé pour mélanger, homogénéiser, broyer, émotter, pulvériser et/ou épandre des produits solides et/ou liquides. De ce fait il peut être utilisé dans un grand nombre de domaines techniques.As will have been understood, the device according to the present invention can be used for mixing, homogenizing, grinding, rubbing, spraying and / or spreading solid and / or liquid products. Therefore it can be used in a large number of technical fields.
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88402268T ATE93744T1 (en) | 1987-09-08 | 1988-09-08 | DEVICE, IN PARTICULAR FOR UNIFORM DISTRIBUTION OF SOLID PARTICLES OR/AND LIQUIDS, AND APPARATUS WITH SUCH DEVICE. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8712441 | 1987-09-08 | ||
FR8712441A FR2620044B1 (en) | 1987-09-08 | 1987-09-08 | PROCESS AND DEVICE FOR SPREADING OR MIXING POWDERS BY DEPOSITION OF AIR-SUSPENDED PARTICLES |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0307318A1 true EP0307318A1 (en) | 1989-03-15 |
EP0307318B1 EP0307318B1 (en) | 1993-09-01 |
Family
ID=9354703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88402268A Expired - Lifetime EP0307318B1 (en) | 1987-09-08 | 1988-09-08 | Device, especially for uniformly distributing solid particles and/or liquids, and unit having such a device |
Country Status (16)
Country | Link |
---|---|
US (1) | US4883363A (en) |
EP (1) | EP0307318B1 (en) |
JP (1) | JPH01159044A (en) |
AT (1) | ATE93744T1 (en) |
AU (1) | AU619757B2 (en) |
CA (1) | CA1327885C (en) |
DE (1) | DE3883669T2 (en) |
DK (1) | DK496288A (en) |
ES (1) | ES2046321T3 (en) |
FI (1) | FI96493C (en) |
FR (1) | FR2620044B1 (en) |
IE (1) | IE62264B1 (en) |
MC (1) | MC1979A1 (en) |
NO (1) | NO174137C (en) |
PT (1) | PT88428B (en) |
ZA (1) | ZA886673B (en) |
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WO2007113220A1 (en) * | 2006-03-29 | 2007-10-11 | Hebold Mixing & More Gmbh | Homogenizer |
CN104549106A (en) * | 2015-01-04 | 2015-04-29 | 安徽新中远化工科技有限公司 | Synthesis tower |
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CN104549106A (en) * | 2015-01-04 | 2015-04-29 | 安徽新中远化工科技有限公司 | Synthesis tower |
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Also Published As
Publication number | Publication date |
---|---|
FR2620044A1 (en) | 1989-03-10 |
FR2620044B1 (en) | 1989-12-22 |
AU619757B2 (en) | 1992-02-06 |
EP0307318B1 (en) | 1993-09-01 |
FI884118A0 (en) | 1988-09-07 |
CA1327885C (en) | 1994-03-22 |
PT88428B (en) | 1994-03-31 |
DK496288D0 (en) | 1988-09-06 |
ZA886673B (en) | 1989-06-28 |
NO174137C (en) | 1994-03-23 |
JPH01159044A (en) | 1989-06-22 |
NO883975L (en) | 1989-03-09 |
AU2202888A (en) | 1989-03-09 |
US4883363A (en) | 1989-11-28 |
DE3883669T2 (en) | 1994-03-31 |
DK496288A (en) | 1989-03-09 |
NO883975D0 (en) | 1988-09-07 |
PT88428A (en) | 1989-07-31 |
FI96493C (en) | 1996-07-10 |
ES2046321T3 (en) | 1994-02-01 |
IE62264B1 (en) | 1995-01-11 |
DE3883669D1 (en) | 1993-10-07 |
NO174137B (en) | 1993-12-13 |
FI884118A (en) | 1989-03-09 |
ATE93744T1 (en) | 1993-09-15 |
IE882705L (en) | 1989-03-08 |
MC1979A1 (en) | 1989-11-23 |
FI96493B (en) | 1996-03-29 |
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