FR2840404A1 - The assembly for a dosed feed of plastics granules/powder has a main hopper with a secondary hopper opening into it, both using weight monitors, with the mixing action by pneumatic stirring in the main hopper - Google Patents

The assembly for a dosed feed of plastics granules/powder has a main hopper with a secondary hopper opening into it, both using weight monitors, with the mixing action by pneumatic stirring in the main hopper Download PDF

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Publication number
FR2840404A1
FR2840404A1 FR0206680A FR0206680A FR2840404A1 FR 2840404 A1 FR2840404 A1 FR 2840404A1 FR 0206680 A FR0206680 A FR 0206680A FR 0206680 A FR0206680 A FR 0206680A FR 2840404 A1 FR2840404 A1 FR 2840404A1
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France
Prior art keywords
hopper
main hopper
main
fact
additional
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Granted
Application number
FR0206680A
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French (fr)
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FR2840404B1 (en
Inventor
Alphonse Sassi
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SPIROFLUX SA
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SPIROFLUX SA
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Priority to FR0206680A priority Critical patent/FR2840404B1/en
Publication of FR2840404A1 publication Critical patent/FR2840404A1/en
Application granted granted Critical
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/22—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for apportioning materials by weighing prior to mixing them
    • G01G19/24—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for apportioning materials by weighing prior to mixing them using a single weighing apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/60—Mixing solids with solids
    • 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
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • 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
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • B01F25/53—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle in which the mixture is discharged from and reintroduced into a receptacle through a recirculation tube, into which an additional component is introduced
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
    • B01F35/881—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise by weighing, e.g. with automatic discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/892—Forming a predetermined ratio of the substances to be mixed for solid materials, e.g. using belts, vibrations, hoppers with variable outlets or hoppers with rotating elements, e.g. screws, at their outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • B29B7/24—Component parts, details or accessories; Auxiliary operations for feeding
    • B29B7/242—Component parts, details or accessories; Auxiliary operations for feeding in measured doses
    • B29B7/244—Component parts, details or accessories; Auxiliary operations for feeding in measured doses of several materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/60—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material
    • B29B7/603—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material in measured doses, e.g. proportioning of several materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • B29C31/02—Dispensing from vessels, e.g. hoppers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • B29C31/04—Feeding of the material to be moulded, e.g. into a mould cavity
    • B29C31/06—Feeding of the material to be moulded, e.g. into a mould cavity in measured doses, e.g. by weighting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
    • G01G13/02—Means for automatically loading weigh pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04—Particle-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/287—Raw material pre-treatment while feeding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/251—Particles, powder or granules

Abstract

The assembly for a dosed feed of mixtures of granules and powders, by weight, has a main hopper (1) for the major ingredient of the mixture. A secondary hopper (2) opens into the main hopper through a passage lock (8), for the other ingredient in a smaller quantity. The hoppers are both mounted at the same weight measurement monitors (3) at the frame (4). The ingredients are mixed together in the main hopper by pneumatic stirring.

Description

interrupteur arretant la remontee du plateau leste (17).switch stopping the lifting of the ballast plate (17).

s La presente invention a pour objet un dispositif de dosage ponderal et  s The present invention relates to a weight metering device and

de melange de produits granules et pulverulents.  mixing of granular and pulverulent products.

11 peut stappliquer a toutes les installations necessitant un dosage precis de plusieurs composants a melanger se presentant sous forme de pulverulents ou de granules, mais il est tout particulierement destine a l'alimentation des machines  It can be applied to all installations requiring a precise dosage of several components to be mixed in the form of pulverulants or granules, but it is particularly intended for supplying machines

d'injection, d'extrusion ou d'extrusion soufflage de matiere plastique.  injection, extrusion or extrusion blow molding of plastic material.

Les formulations employees dans ce domaine vent obtenues par le melange d'un ou de plusieurs types de materieu de base avec une serie d'additifs utilises en petites quantites, cheque composant etant en general pese separement, dans des tremies distinctes adaptees a un type de produit, puis achemine dans un melangeur. Les installations ainsi realisees vent souvent tres encombrantes; leur mise au point et leur maintenance vent rendues difficiles en raison d'equipements disparates provenant en general de plusieurs constructeurs. Les investissements et couts de  The formulations used in this field are obtained by mixing one or more types of basic material with a series of additives used in small quantities, each component being generally weighed separately, in separate hoppers adapted to a type of product, then routes it into a blender. The installations thus carried out are often very bulky; their development and maintenance wind made difficult due to disparate equipment generally coming from several manufacturers. Investments and costs of

fonctionnement de tels ensembles vent en consequence eleves.  operation of such assemblies is consequently high.

Le brevet N FR 2 746 917, depose par le demandeur, decrit un systeme comportant une double tremie de pesage montee sur un seul jeu de capteurs d'efforts et constituee d'une enceinte de volume important pour le ou les produits constituent la plus grande partie du melange final, et d'une enceinte de volume reduit pour les produits intervenant en faible quantite, ces deux enceintes etant, apres les operations de pesage effectuees sequentiellement, vidangees simultanement dans un  Patent N FR 2 746 917, filed by the applicant, describes a system comprising a double weighing hopper mounted on a single set of force sensors and consisting of a large volume enclosure for the product or products constitute the largest part of the final mixture, and a reduced volume enclosure for products operating in small quantities, these two enclosures being, after the weighing operations carried out sequentially, emptied simultaneously into a

melangeur mecanique integre.integrated mechanical mixer.

Le dispositif selon la presente invention consiste en un perfectionnement de ce systeme permettant de diminuer sensiblement le cout et I'encombrement en effectuant le melange des prod u its d irectement dans la trem ie  The device according to the present invention consists in an improvement of this system making it possible to appreciably reduce the cost and the bulk by carrying out the mixing of the products directly in the hopper.

principale, ce qui permet de supprimer le melangeur mecanique.  main, which eliminates the mechanical mixer.

11 est constitue d'une tremie principale pour le ou les produits constituent la plus grande partie du melange final, et d'une tremie secondaire pouvant se vider dans la trem ie pri ncipale pou r les prod u its i ntervenant en faible qua ntite, les deux tremies etant solidaires et montees sur un meme jeu de capteurs d'efforts, le  It is made up of a main hopper for the product or products constitute the largest part of the final mixture, and of a secondary hopper which can be emptied into the main hopper for the products which are used in low quality, the two hoppers being integral and mounted on the same set of force sensors, the

melange steffectuant dans la tremie principale par brassage pneumatique.  mixing in the main hopper by pneumatic mixing.

Sur les dessins annexes, donnes a titre d'exemple non limitatif d'une forme de realisation conforme a la presente demande: la figure 1 represente, en elevation, I'ensemble du dispositif vu du cote de la tremie secondaire, la figure 2 montre dans les memes conditions le dispositif vu du cote 1 5 oppose et la figure 3 represente une variante avec tremie secondaire au-dessus  In the accompanying drawings, given by way of nonlimiting example of an embodiment in accordance with the present application: FIG. 1 shows, in elevation, the entire device seen from the side of the secondary hopper, FIG. 2 shows under the same conditions the device seen from the side 1 5 opposite and Figure 3 represents a variant with secondary hopper above

de la tremie principale.of the main hopper.

Le dispositif, figures 1 et 2, est constitue de deux tremies solidaires: une tremie principale 1 contenant le melange final, et une tremie additionnelle 2 receva nt les prod u its entrant dans le melange en faible q uantite, tels q u'additifs ou colorants, I'ensemble etant monte sur un jeu unique de capteurs de pesee 3 fixes sur  The device, FIGS. 1 and 2, is made up of two integral hoppers: a main hopper 1 containing the final mixture, and an additional hopper 2 receives the products entering the mixture in low quantity, such as additives or dyes, the assembly being mounted on a single set of weighing sensors 3 fixed on

l'enceinte 4 contenant le dispositif.  enclosure 4 containing the device.

La tremie principale 1 constitue une enceinte etanche. Son chargement steffectue par surpression ou aspiration au moyen d'une source de vice 5 (figure 3) au travers d'un filtre primaire situe a la partie superieure de la tremie, ou externe a la tremie. L' alimentation pneumatique permet de raccorder directement la tremie  The main hopper 1 constitutes a sealed enclosure. Its loading is effected by overpressure or aspiration by means of a source of vice 5 (FIG. 3) through a primary filter located at the upper part of the hopper, or external to the hopper. Pneumatic supply allows direct connection of the hopper

principale 1 aux tremies de stockage par une ou plusieurs tubulures d'alimentation 6.  main 1 to the storage hoppers by one or more supply pipes 6.

Ces tubulures, ainsi que la tubulure d'aspiration seront desolidarisees de ['ensemble de  These pipes, as well as the suction pipe will be separated from the assembly of

pesage au moyen de soufflets 7, ou de portions tubulaires couples.  weighing by means of bellows 7, or of couples tubular portions.

La tremie additionnelle 2 est ouverte a sa partie superieure. Eile comporte en amont (figure 3) ou en aval (figure 1) un organe d'isolement 8 et debouche dans la tremie principale 1 dans laquelle elle peut etre videe. La tremie additionnelle peut etre disposee au-dessus de la tremie principale ou lateralement a celle-ci. Dans le second cas, elle comportera a sa base un conduit 9 debouchant a la partie basse de la tremie principale 1 qui est fermee par un obturateur 10 de vidange etanche actionne par un verin 11. Cet obturateur permet d'ecouler le melange final dans une  The additional hopper 2 is open at its upper part. Eile comprises upstream (Figure 3) or downstream (Figure 1) an isolation member 8 and opens into the main hopper 1 in which it can be emptied. The additional hopper can be placed above or adjacent to the main hopper. In the second case, it will have at its base a conduit 9 opening out at the lower part of the main hopper 1 which is closed by a shutter 10 for watertight draining actuated by a jack 11. This shutter allows the final mixture to flow into a

tremie d'evacuation 12 disposee au-dessous de ['ensemble de pesage.  discharge hopper 12 arranged below the weighing assembly.

Les produits a closer en faible quantite seront achemines vers la tremie additionnelle 2 par vis d'Archimede, convoyeurs a bande, couloirs vibrants ou tout autre  The products in closer quantity in small quantity will be conveyed to the additional hopper 2 by Archimedean screws, belt conveyors, vibrating lanes or any other

systeme a partir d'enceintes de stockage (non representees).  system from storage enclosures (not shown).

Le melange dans la tremie principale 1 est assure par brassage pneumatique au moyen d'un flux d'air produit par une turbine 13, ou un autre systeme pneumatique, raccorde par un tube infbrieur 14 a la base de la tremie et par un tube superieur 15 a sa partie haute, I'ecoulement dans ces tubes steffectuant de teas en haut. Le conduit 9 de vidange de la tremie additionnelle 2 pourra avantageusement etre  The mixing in the main hopper 1 is ensured by pneumatic mixing by means of an air flow produced by a turbine 13, or another pneumatic system, connected by a lower tube 14 to the base of the hopper and by an upper tube. 15 at its upper part, the flow in these tubes effecting teas at the top. The pipe 9 for emptying the additional hopper 2 can advantageously be

raccorde a la partie basse du tube inferieur 14 ou directement a la tremie principale 1.  connected to the lower part of the lower tube 14 or directly to the main hopper 1.

L'alimentation pneumatique peut etre assuree par la turbine 13, ou le  The pneumatic supply can be ensured by the turbine 13, or the

systeme assurant le brassage, grace a un systeme de vannes approprie.  system ensuring mixing, thanks to a suitable valve system.

Les composants du melange final vent peses l'un apres l'autre, sequentiellement, a ['aide d'un module electronique de pilotage raccorde aux capteurs d'efforts 3 et programme pour declencher successivement ltouverture de chaque circuit d'alimentation 6, puis sa fermeture des que le poids necessaire du produit correspondent est atteint, ainsi que la mise en route et l'arret, dans les memes  The components of the final mixture are weighed one after the other, sequentially, using an electronic control module connected to the force sensors 3 and program to trigger successively the opening of each supply circuit 6, then its closing as soon as the necessary weight of the corresponding product is reached, as well as starting and stopping, in the same

conditions, des moyens de remplissage de la tremie additionnelle 2.  conditions, means for filling the additional hopper 2.

Le positionnement des divers elements constitutifs donne a ['objet de ['invention un maximum d'effets utiles qui n'avaient pas ete, a ce jour, obtenus par des  The positioning of the various constituent elements gives the object of the invention a maximum of useful effects which had not, to date, been obtained by

dispositifs similaires.similar devices.

Claims (7)

REVENDICATIONS 1 . Dispositif de dosage et de melange de produits granules et pulverulents, destine aux installations necessitant un dosage precis de plusieurs composants a melanger se presentant sous forme de poudres ou de granules, en particulier aux installations d'alimentation des machines dtinjection ou d'extrusion de matiere plastique, comportant une tremie principale (1) pour le ou les produits constituent la plus grande partie du melange final, et une tremie additionnelle (2) pour les produits intervenant en faible quantite, ces deux tremies etant solidaires et montees sur un meme jeu de capteurs d'efforts (3), caracterise en ce que la tremie additionnelle (2) comporte un organe d'isolement (8) et debouche dans la tremie principale (1) dans laquelle elle peut etre videe, le melange des produits s'effectuant dans ladite tremie principale par brassage pneumatique. 2 . Dispositif selon la revendication 1, se caracterisant par le fait que le brassage pneumatique dans la tremie principale (1) est assure par un flux d'air produit par une turbine (13) raccordee par un tube inferieur (14) a la base de ladite tremie principale et par un tube superieur (15) a sa partie haute, I'ecoulement dans  1. Device for metering and mixing granular and pulverulent products, intended for installations requiring precise dosing of several components to be mixed in the form of powders or granules, in particular for feeding installations for injection or material extrusion machines plastic, comprising a main hopper (1) for the product (s) constituting the major part of the final mixture, and an additional hopper (2) for the products operating in small quantity, these two hoppers being integral and mounted on the same set of force sensors (3), characterized in that the additional hopper (2) comprises an isolation member (8) and opens into the main hopper (1) in which it can be emptied, the mixing of the products taking place in said main hopper by pneumatic stirring. 2. Device according to claim 1, characterized in that the pneumatic stirring in the main hopper (1) is ensured by an air flow produced by a turbine (13) connected by a lower tube (14) at the base of said main hopper and by an upper tube (15) at its upper part, the flow in lesdits tubes s'effectuant de teas en haut.  said tubes being carried out from the top. 3 . Dispositif selon la revendication 2, se caracterisant par le fait que le conduit (8) de vidange de la tremie additionnelle (2) est raccorde a la partie basse  3. Device according to claim 2, characterized in that the conduit (8) for emptying the additional hopper (2) is connected to the lower part du tube inferieur (14) raccordant la turbine (13) a la base de la tremie principale (1).  of the lower tube (14) connecting the turbine (13) to the base of the main hopper (1). 4 . Dispositif selon l'une quelconque des revendications precedentes,  4. Device according to any one of the preceding claims, se caracterisant par le fait que la tremie principale (1) constitue une enceinte etanche, son chargement s'effectuant par surpression ou aspiration permettant le remplissage grace a une ou plusieurs tubulures d'alimentation (6) raccordees aux tremies de stockage.  characterized by the fact that the main hopper (1) constitutes a sealed enclosure, its loading being effected by overpressure or suction allowing filling thanks to one or more supply pipes (6) connected to the storage hoppers. . Dispositif selon les revendications 2 et 4, se caracterisant par le fait   . Device according to claims 2 and 4, characterized in that que le remplissage de la tremie principale (1) est assure par la turbine (13), ou le  that the main hopper (1) is filled by the turbine (13), or the systeme assurant le brassage pneumatique, grace a un systeme de vannes approprie.  pneumatic stirring system, thanks to a suitable valve system. 6 . Dispositif selon l'une quelconque des revendications precedentes,  6. Device according to any one of the preceding claims, se caracterisant par le fait que la tremie principale (1) est fermee a sa base par un obturateur (10) de vidange etanche a commande automatique actionne par un verin (11) et permettant d'ecouler le melange final dans une tremie d'evacuation (12)  characterized by the fact that the main hopper (1) is closed at its base by a sealed shutter (10) with automatic control actuated by a jack (11) and allowing the final mixture to flow into an evacuation hopper (12) disposee au-dessous de ltensemble de pesage.  located below the weighing system. 7 . Dispositif selon l'une quelconque des revendications precedentes,  7. Device according to any one of the preceding claims, se caracterisant par le fait que la tremie additionnelle (2) est ouverte a sa partie superieure, les produits a closer en faible quantite etant achemines par vis d'Archimede, convoyeurs a bande, couloirs vibrants ou tout autre systeme a partir d'enceintes de stockage.  characterized by the fact that the additional hopper (2) is open at its upper part, the products in closer quantity in small quantity being conveyed by Archimedean screws, belt conveyors, vibrating corridors or any other system starting from storage. 8 . Dispositif selon l'une quelconque des revendications precedentes,  8. Device according to any one of the preceding claims, se caracterisant par le fait que la tremie additionnelle (2) est disposee lateralement a  characterized by the fact that the additional hopper (2) is disposed laterally at la tremie principale (1).the main hopper (1). 9 . Dispositif selon l'une quelconque des revendications 1 a 7, se  9. Device according to any one of claims 1 to 7, is caracterisant par le fait que la tremie additionnelle (2) est disposee audessus de la  characterized by the fact that the additional hopper (2) is arranged above the tremie principale (1).main hopper (1). . Dispositif selon l'une quelconque des revendications precedentes,   . Device according to any one of the preceding claims, se caracterisant par le fait que les composants du melange final vent peses sequentiellement a ['aide d'un mod u le electron iq ue de pilotage raccorde aux capteurs d'efforts (3) et programme pour declencher successivement l'ouverture de chaque tremie de stockage raccordee a la ou aux tubulure(s) d'alimentation (6), puis sa fermeture des que le poids necessaire du produit correspondent est atteint, ainsi que la mise en route et l'arret, dans les memes conditions, des moyens de remplissage de  characterized by the fact that the components of the final mixture are weighed sequentially using a mod u the electronic control valve connected to the force sensors (3) and program for successively triggering the opening of each hopper of storage connected to the supply tube (s) (6), then closing it as soon as the necessary weight of the corresponding product is reached, as well as starting and stopping, under the same conditions, means of filling of
FR0206680A 2002-05-31 2002-05-31 DEVICE FOR THE PONDERAL DOSING AND MIXING OF PELLETS AND PELLETS Expired - Fee Related FR2840404B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2045003A1 (en) * 2007-09-27 2009-04-08 Mann + Hummel ProTec GmbH Device for conveying and mixing bulk material
WO2014056010A1 (en) * 2012-10-11 2014-04-17 Wittmann Kunststoffgeräte Gmbh Device for metering bulk material, in particular plastics granulate

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0519193A1 (en) * 1991-06-16 1992-12-23 Maschinenfabrik Gustav Eirich Dosing balance
FR2746917A1 (en) * 1996-03-28 1997-10-03 Spiroflux Sa Powder and granule dosing system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0519193A1 (en) * 1991-06-16 1992-12-23 Maschinenfabrik Gustav Eirich Dosing balance
FR2746917A1 (en) * 1996-03-28 1997-10-03 Spiroflux Sa Powder and granule dosing system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2045003A1 (en) * 2007-09-27 2009-04-08 Mann + Hummel ProTec GmbH Device for conveying and mixing bulk material
WO2014056010A1 (en) * 2012-10-11 2014-04-17 Wittmann Kunststoffgeräte Gmbh Device for metering bulk material, in particular plastics granulate
CN104995004A (en) * 2012-10-11 2015-10-21 威特曼塑料仪器有限责任公司 Device for metering bulk material, in particular plastics granulate
US9650162B2 (en) 2012-10-11 2017-05-16 Wittmann Kunststoffgeraete Gmbh Device for metering bulk material, in particular plastics granulate
CN104995004B (en) * 2012-10-11 2017-07-04 威特曼塑料仪器有限责任公司 For the mechanism of dispensing loose unpacked material particularly plastic grain

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