[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

EP0507737B1 - Method and dynamic mixing device - Google Patents

Method and dynamic mixing device Download PDF

Info

Publication number
EP0507737B1
EP0507737B1 EP92810227A EP92810227A EP0507737B1 EP 0507737 B1 EP0507737 B1 EP 0507737B1 EP 92810227 A EP92810227 A EP 92810227A EP 92810227 A EP92810227 A EP 92810227A EP 0507737 B1 EP0507737 B1 EP 0507737B1
Authority
EP
European Patent Office
Prior art keywords
components
orifices
introduction
cartridge
detachable
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.)
Expired - Lifetime
Application number
EP92810227A
Other languages
German (de)
French (fr)
Other versions
EP0507737A1 (en
Inventor
Christian Krumm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Octal Technologies CH Krumm
Original Assignee
Octal Technologies CH Krumm
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Octal Technologies CH Krumm filed Critical Octal Technologies CH Krumm
Publication of EP0507737A1 publication Critical patent/EP0507737A1/en
Application granted granted Critical
Publication of EP0507737B1 publication Critical patent/EP0507737B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/88—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with a separate receptacle-stirrer unit that is adapted to be coupled to a drive mechanism
    • 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
    • B01F35/50—Mixing receptacles

Definitions

  • the present invention relates to a method of mixing the various components of a product and to a device comprising a detachable cartridge used for this purpose.
  • a mixer which can be either a static mixer or a dynamic mixer.
  • a static mixer used mainly for relatively fluid products
  • the various components are pressed together through a set of baffles in order to be intimately mixed.
  • a dynamic mixer generally used for more viscous products, the various components are introduced into a mixing chamber where a blade, driven by a stirring movement, is responsible for mixing.
  • the major drawback of the dynamic mixers of the prior art lies in the fact that after extraction of the mixed product from said mixing chamber, a certain amount of said mixed product remains in the chamber and, after a while, changes state under the effect of the chemical reaction.
  • the time required for this change can be very variable, depending on the components used as well as the surrounding conditions; this duration can thus be less than a minute or more than an hour. Therefore, each time the device is stopped for a time greater than the time necessary for the initiation or the completion of the chemical reaction, either because of the shutdown of the production machine arranged downstream , or due to a temporary absence of the operator, it is necessary to dismantle the dynamic mixer and completely clean the mixing chamber as well as the extraction orifice, in order to remove all the particles of mixed product that have hardened. This cleaning operation can be long and dangerous due to the use of the products or solvents necessary for this purpose.
  • US-A-4,951,843 describes a mixing device comprising a portion of a removable mixing chamber; a drawback of this device lies in the fact that the mixing blade is independent of the chamber, thereby necessitating separate cleaning of the mixing blade, of the removable portion of the chamber as well as of the non-removable bottom portion of the mixing device. Another drawback of this device is that the components to be mixed are introduced longitudinally through the non-removable bottom portion at a place where the mixing paddle has little effectiveness, thus creating an area where the components mix poorly.
  • a first object of the invention is to propose a method making it possible to facilitate or even eliminate this cleaning operation, this object being obtained by a method corresponding to the characteristics of claim 1.
  • Another object of the invention is to propose a method allowing, by judiciously arranging the component inlet holes in the mixing chamber, to obtain efficient mixing without creating a dead zone; this object is obtained, according to several construction variants, by the characteristics of claims 2 to 6.
  • Yet another object of the invention is to provide a dynamic mixing device capable of carrying out the mixing method according to the invention, which meets the characteristics of claims 7 and 8, while a detachable cartridge intended to be used by the device above, comprises, for several variant embodiments, the characteristics of claims 9 to 12.
  • An installation for mixing 1 of two components A and B of a product can consist, for example, as seen in FIG. 1, of a reservoir 10 of a first component A, the outlet of which is connected to a volumetric doser 11, as well as to a reservoir 12 of a second component B, the outlet orifice of which is connected to another volumetric doser 13, as well as to a dynamic mixer 2, each of which two orifices d input 20A and 20B is connected to an outlet orifice of a volumetric metering device 11, respectively 13, by pipes, preferably flexible.
  • the component tanks 10 and 12 as well as the volumetric dosers 11 and 13 forming part of the state of the technique are not further described here; one can only indicate that they are responsible for supplying the dynamic mixer 2, by its supply orifices 20A and 20B, by component A, respectively B, continuously, intermittently or on demand, being controlled by a device automatic control also part of the prior art and not shown in the figure.
  • the metering devices are of the volumetric type as indicated, they are more generally product distributors known in the art, for example of the volumetric type as shown or of the timed type or even of another known type; on the other hand, each of said product distributors can be made up of a single element, grouping together the product reservoir and the metering device. Likewise the dynamic mixer as well as the product distributors can also be made up in a single element, thus eliminating the flexible connecting pipes. Finally, said installation can be intended to mix more than two components, thereby requiring more than two product distributors.
  • the dynamic mixer 2 comprises a portion of fixing body, preferably consisting of a first fixed body portion 21B, and a second movable body portion 21A, the two body portions being connected by a hinge 22 and can therefore be opened, as shown in the figure, or closed as indicated by the arrow.
  • a locking device 23, of known execution, is arranged on the faces of the two portions opposite to those comprising the hinge 22, in order to ensure closing and locking the two body portions 21A and 21B.
  • the body portion 21A and the body portion 21B each comprise a housing, preferably of semi-cylindrical shape 24A, respectively 24B which, when the two portions 21A and 21B are folded over one another, face each other so to compose a housing preferably cylindrical, extending over the entire height of the two said portions.
  • the upper face of each of the portions 21A and 21B comprises a recess 25A, respectively 25B, the usefulness of which will be explained below.
  • Each of the portions 21A and 21B further comprises a pipe 26A, respectively 26B, connected on one side to the inlet orifices 20A, respectively 20B and each opening by a nozzle 27A, respectively 27B in the side wall of the semi-cylindrical housing 24A , respectively 24B.
  • the mixing chamber of the dynamic mixing device consists of a detachable cartridge 3, consisting of a hollow envelope body 30, preferably of cylindrical shape, but which can be of any other suitable shape and the dimensions of which outer correspond to the dimensions of the housing disposed in the fixing portion, respectively whose outer diameter corresponds to the inner diameter of the cylindrical housing formed by the two semi-cylindrical housings 24A and 24B and whose height corresponds approximately to that of said cylindrical housing.
  • the hollow casing body 30 has its open upper end, a flange 31, of any cross section but not circular, extending transversely out of the upper end of the hollow casing body 30.
  • the shape of the flange 31 is adapted to that of the hollows 25A and 25B, so that said hollow casing body is firmly held inside the cylindrical housing when the two portions 21A and 21B are closed, and that said hollow envelope body can easily be inserted into, or extracted from, said cylindrical housing when the two portions 21A and 21B are open.
  • Two orifices 32A and 32B (better visible in FIG. 2), corresponding to the nozzles 27A and 27B, are adjusted to the dimensions of said nozzles and put them in connection with the internal part of said hollow casing body.
  • the lower end of the hollow casing body 30 is closed for the most part, leaving just an outlet orifice 33 also formed in the nozzle.
  • a stirring device 34 consisting of a body with a cylindrical axis 35, of diameter slightly less than the inside diameter of the hollow envelope body 30, surmounted by a drive head 36, which may for example be of cylindrical shape, of larger diameter, so that a portion of the crown formed by the outer part of the lower surface of said drive head can rest on the upper face of the flange 31.
  • a diametrical slot 37 is provided on the upper face of the drive head 36, in order to rotate said stirring device, as indicated below.
  • One or more mixing blades 38 are fixed to the lower part of the body of cylindrical axis 35, so as to best use the mixing space located in the lower part of the hollow casing body 30.
  • annular seal 39 fixed close to the lower part of the body of cylindrical axis 35, is intended to seal between the mixing space and the portion of casing body disposed above said mixing space; the annular seal 39 must also allow the body of the cylindrical axis 35 to rotate inside the hollow casing body 30.
  • the detachable cartridge 3 is made of a material resistant to the components to be mixed as well as to the finished product; since it is generally disposable after use, as will be seen below, it can be made of a cheaper material, possibly only resistant for a limited period to the products mentioned above.
  • the dimensions of the stirring space must be adapted to the quantity of product required, this quantity possibly being as small as a few hundredths of a milliliter.
  • the dynamic mixer 2 is completed with a drive part 4, visible in FIG. 1, comprising a motor 40, driving an axis 41 by means, for example, of a set of pulleys and belt 42.
  • the lower part of the axis 41 is provided with a drive end 43, comprising a tongue 44 capable of engaging in the diametrical slot 37 of the drive head 36.
  • This drive part 4 is relatively conventional, this is why it is not described more precisely here; the motor 40 is preferably an electric motor controlled by the automatic control device mentioned above.
  • the portion of the fixing body may be made up of a single portion, the detachable cartridge 3 being introduced for example by the upper end of a housing arranged inside said single portion; in this case, the drive part 4 is pivoting or sliding relative to said single portion in order to leave the space necessary for the introduction of the detachable cartridge.
  • the axes of the pipes 26A and 26B, respectively the nozzles 27A and 27B introduce radially components inside the brewing space; moreover they are not aligned face to face but the nozzle 27A is located opposite and above the nozzle 27B.
  • the upper part of the brewing space the region where brewing is not as good, is occupied by only one of the components of the mixture, thus avoiding a risk of chemical transformation at this place which could clog up the seal 39 and prevent rotation of the stirring device 34.
  • the component introduced by the upper nozzle will be that present in greater proportion in the mixture or else the base resin of said product, while the lower nozzle will introduce the component intervening in smaller proportion or the hardener for example.
  • the feed device, the volumetric dosers 11 and 13 respectively, as well as the motor 40 are started by the automatic control device, in order to inject into the mixing space a determined quantity of components A and B and of mix these two components using the stirring paddle (s) 38.
  • the volumetric dosers 11 and 13 will inject a new quantity of the components A and B, this which will eject the mixed product through the outlet port 33, for use in the rest of the process.
  • the automatic control device is programmed so that the mixed product leaves the outlet orifice 33 as required, either drop by drop at a determined rate, or in a continuous stream, or then on demand.
  • the detachable cartridge comprising the hollow casing body and the stirring body is designed so that it can be produced in quantity at low cost; thus the cleaning operation is directly eliminated, the detachable cartridge being thrown away when it is dirty.
  • one of the products introduced into the brewing space is not a component directly involved in the composition of the finished product, but is for example a diluent, a solvent or any product loaded with to delay the onset of the chemical reaction or to rinse the mixing space before or after use; in this case the automatic process control device will control the introduction of said product whatever independently of the introduction of the components necessary for the manufacture of the finished product.
  • the mixing device has been described with an inlet nozzle opening out from the fixed body portion and another inlet nozzle opening out from the movable body portion; it is obvious that it is also possible to unblock the inlet nozzles from the same body portion, whether it is the fixed body portion or the movable body portion.
  • the inlet orifices of the components in the cartridge may not be necessary for the inlet orifices of the components in the cartridge to be arranged in successive planes; in this case they could be arranged side by side in the same plane.
  • the radial entry of the components can sometimes prove to be unsuitable for proper control of the process; in this case, the orifices can be designed so that the components do not penetrate radially but obliquely, preferably directed towards the bottom of the mixing chamber.
  • Another variant of the device described comprises an improvement making it easier to introduce the tongue 44 of the drive end 43 into the slot 37 of the drive head 36, by providing that said drive end is sliding on the axis 41.
  • the method, the mixing device and the cartridge according to the invention therefore make it possible to facilitate the use of products with several components in avoiding the operation of cleaning the mixing chamber of the mixer after a shutdown for a certain period, thus leading to an increase in the production rate, respectively a reduction in production costs.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Accessories For Mixers (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Description

La présente invention concerne un procédé de mélange des divers composants d'un produit ainsi qu'un dispositif comportant une cartouche détachable utilisé à cet effet.The present invention relates to a method of mixing the various components of a product and to a device comprising a detachable cartridge used for this purpose.

L'industrie utilise très souvent des produits se présentant sous la forme de deux ou plusieurs composants qu'il s'agit de mélanger juste avant utilisation; on peut citer à titre d'exemple des colles dont les deux composants sont à réunir et mélanger juste avant application. Généralement le conditionnement dudit produit en plusieurs composants est nécessité par le fait que leur réunion engendre un processus chimique de polymérisation, de durcissement ou plus généralement un changement d'état.Industry very often uses products in the form of two or more components which must be mixed just before use; By way of example, mention may be made of adhesives, the two components of which are to be combined and mixed just before application. Generally, the packaging of said product into several components is necessary because their union generates a chemical process of polymerization, hardening or more generally a change of state.

Le mélange des composants d'un produit de cette sorte se fait généralement dans un mélangeur pouvant être soit un mélangeur statique, soit un mélangeur dynamique. Dans un mélangeur statique, utilisé principalement pour des produits relativement fluides, les divers composants sont pressés ensemble à travers un jeu de chicanes afin d'être mélangés intimement. Dans un mélangeur dynamique, utilisé généralement pour des produits plus visqueux, les divers composants sont introduits dans une chambre de mélange où une pale, animée d'un mouvement de brassage, est chargée de réaliser le mélange.The mixing of the components of a product of this kind is generally done in a mixer which can be either a static mixer or a dynamic mixer. In a static mixer, used mainly for relatively fluid products, the various components are pressed together through a set of baffles in order to be intimately mixed. In a dynamic mixer, generally used for more viscous products, the various components are introduced into a mixing chamber where a blade, driven by a stirring movement, is responsible for mixing.

L'inconvénient majeur des mélangeurs dynamiques de l'art antérieur réside dans le fait qu'après extraction du produit mélangé hors de ladite chambre de mélange, une certaine quantité dudit produit mélangé subsiste dans la chambre et, au bout de quelques temps, change d'état sous l'effet de la réaction chimique. La durée nécessaire pour ce changement peut être très variable, dépendant des composants utilisés ainsi que des conditions environnantes; cette durée peut ainsi être inférieure à la minute ou supérieure à l'heure. De ce fait, chaque fois que le dispositif est arrêté durant un temps supérieur à la durée nécessaire à l'amorce ou à l'accomplissement de la réaction chimique, que ce soit à cause de l'arrêt de la machine de production disposée en aval, ou à cause d'une absence momentanée de l'opérateur, il est nécessaire de démonter le mélangeur dynamique et de nettoyer complètement la chambre de mélange ainsi que l'orifice d'extraction, afin d'en retirer toutes les particules de produit mélangé qui ont durci. Cette opération de nettoyage peut être longue et dangereuse de par l'emploi des produits ou solvants nécessaires à cet effet.The major drawback of the dynamic mixers of the prior art lies in the fact that after extraction of the mixed product from said mixing chamber, a certain amount of said mixed product remains in the chamber and, after a while, changes state under the effect of the chemical reaction. The time required for this change can be very variable, depending on the components used as well as the surrounding conditions; this duration can thus be less than a minute or more than an hour. Therefore, each time the device is stopped for a time greater than the time necessary for the initiation or the completion of the chemical reaction, either because of the shutdown of the production machine arranged downstream , or due to a temporary absence of the operator, it is necessary to dismantle the dynamic mixer and completely clean the mixing chamber as well as the extraction orifice, in order to remove all the particles of mixed product that have hardened. This cleaning operation can be long and dangerous due to the use of the products or solvents necessary for this purpose.

Le brevet US-A-4 951 843 décrit un dispositif mélangeur comportant une portion de chambre de mélange amovible; un inconvénient de ce dispositif réside dans le fait que la pale de brassage est indépendante de la chambre, nécessitant de ce fait un nettoyage séparé de la pale de brassage, de la portion amovible de la chambre ainsi que de la portion de fond non amovible du dispositif mélangeur. Un autre inconvénient de ce dispositif est que les composants à mélanger sont introduits longitudinalement par la portion de fond non amovible en un endroit où la pale de brassage a peu d'efficacité, créant ainsi une zone où les composants se mélangent mal.US-A-4,951,843 describes a mixing device comprising a portion of a removable mixing chamber; a drawback of this device lies in the fact that the mixing blade is independent of the chamber, thereby necessitating separate cleaning of the mixing blade, of the removable portion of the chamber as well as of the non-removable bottom portion of the mixing device. Another drawback of this device is that the components to be mixed are introduced longitudinally through the non-removable bottom portion at a place where the mixing paddle has little effectiveness, thus creating an area where the components mix poorly.

Un premier but de l'invention est de proposer un procédé permettant de faciliter ou même de supprimer cette opération de nettoyage, ce but étant obtenu par un procédé répondant aux caractéristiques de la revendication 1.A first object of the invention is to propose a method making it possible to facilitate or even eliminate this cleaning operation, this object being obtained by a method corresponding to the characteristics of claim 1.

Un autre but de l'invention est de proposer un procédé permettant, en disposant judicieusement les orifices d'entrée des composants dans la chambre de mélange, d'obtenir un brassage efficace sans créer de zone morte; ce but est obtenu, selon plusieurs variantes de construction, par les caractéristiques des revendications 2 à 6.Another object of the invention is to propose a method allowing, by judiciously arranging the component inlet holes in the mixing chamber, to obtain efficient mixing without creating a dead zone; this object is obtained, according to several construction variants, by the characteristics of claims 2 to 6.

Encore un autre but de l'invention est de proposer un dispositif mélangeur dynamique apte à réaliser le procédé de mélange selon l'invention, qui répond aux caractéristiques des revendications 7 et 8, alors qu'une cartouche détachable destinée à être utilisée par le dispositif ci-dessus, comporte, pour plusieurs variantes d'exécution, les caractéristiques des revendications 9 à 12.Yet another object of the invention is to provide a dynamic mixing device capable of carrying out the mixing method according to the invention, which meets the characteristics of claims 7 and 8, while a detachable cartridge intended to be used by the device above, comprises, for several variant embodiments, the characteristics of claims 9 to 12.

Pour mieux comprendre l'invention, on peut se référer au dessin en annexe avec les figures où:

  • la figure 1 représente en perspective, une vue générale d'une installation de mélange d'un produit à deux composants, comportant un dispositif mélangeur dynamique selon l'invention, et
  • la figure 2 représente une partie du dispositif mélangeur selon une forme préférentielle de l'invention à échelle agrandie.
To better understand the invention, reference can be made to the accompanying drawing with the figures where:
  • FIG. 1 shows in perspective, a general view of an installation for mixing a product with two components, comprising a dynamic mixing device according to the invention, and
  • FIG. 2 represents a part of the mixing device according to a preferred form of the invention on an enlarged scale.

Une installation de mélange 1 de deux composants A et B d'un produit peut être constituée par exemple, comme on le voit à la figure 1, d'un réservoir 10 d'un premier composant A, dont l'orifice de sortie est relié à un doseur volumétrique 11, ainsi que d'un réservoir 12 d'un second composant B, dont l'orifice de sortie est relié à un autre doseur volumétrique 13, ainsi que d'un mélangeur dynamique 2, dont chacun des deux orifices d'entrée 20A et 20B est relié à un orifice de sortie d'un doseur volumétrique 11, respectivement 13, par des canalisations, souples de préférence. Les réservoirs de composants 10 et 12 ainsi que les doseurs volumétriques 11 et 13 faisant partie de l'état de la technique ne sont pas décrits plus précisément ici; on peut seulement indiquer qu'ils sont chargés d'alimenter le mélangeur dynamique 2, par ses orifices d'alimentation 20A et 20B, en composant A, respectivement B, en continu, de manière intermittente ou à la demande, étant commandés par un dispositif de commande automatique faisant lui aussi partie de l'art antérieur et non représenté sur la figure.An installation for mixing 1 of two components A and B of a product can consist, for example, as seen in FIG. 1, of a reservoir 10 of a first component A, the outlet of which is connected to a volumetric doser 11, as well as to a reservoir 12 of a second component B, the outlet orifice of which is connected to another volumetric doser 13, as well as to a dynamic mixer 2, each of which two orifices d input 20A and 20B is connected to an outlet orifice of a volumetric metering device 11, respectively 13, by pipes, preferably flexible. The component tanks 10 and 12 as well as the volumetric dosers 11 and 13 forming part of the state of the technique are not further described here; one can only indicate that they are responsible for supplying the dynamic mixer 2, by its supply orifices 20A and 20B, by component A, respectively B, continuously, intermittently or on demand, being controlled by a device automatic control also part of the prior art and not shown in the figure.

Diverses variantes peuvent être considérées concernant la constitution de l'installation de mélange 1; en particulier il n'est pas indispensable que les doseurs soient de type volumétrique comme indiqué, il s'agit plus généralement de distributeurs de produit connus de la technique, par exemple de type volumétrique comme représenté ou de type temporisé ou encore d'un autre type connu; d'autre part, chacun desdits distributeurs de produit peut être constitué en un seul élément, regroupant le réservoir de produit et le doseur. De même le mélangeur dynamique ainsi que les distributeurs de produit peuvent aussi être constitués en un seul élément, éliminant ainsi les canalisations souples de liaison. Enfin, ladite installation peut être destinée à mélanger plus de deux composants, nécessitant de ce fait plus de deux distributeurs de produit.Various variants can be considered concerning the constitution of the mixing installation 1; in particular it is not essential that the metering devices be of the volumetric type as indicated, they are more generally product distributors known in the art, for example of the volumetric type as shown or of the timed type or even of another known type; on the other hand, each of said product distributors can be made up of a single element, grouping together the product reservoir and the metering device. Likewise the dynamic mixer as well as the product distributors can also be made up in a single element, thus eliminating the flexible connecting pipes. Finally, said installation can be intended to mix more than two components, thereby requiring more than two product distributors.

Le mélangeur dynamique 2 selon l'invention comprend une portion de corps de fixation, constitué de manière préférentielle d'une première portion de corps fixe 21B, et d'une seconde portion de corps mobile 21A, les deux portions de corps étant reliées par une charnière 22 et pouvant donc être ouvertes, comme représenté sur la figure, ou fermées comme indiqué par la flèche. Un dispositif de verrouillage 23, d'exécution connue, est disposé sur les faces des deux portions opposées à celles comprenant la charnière 22, afin d'assurer la fermeture et le verrouillage des deux portions de corps 21A et 21B. La portion de corps 21A et la portion de corps 21B comprennent chacune un logement, de préférence de forme semi-cylindrique 24A, respectivement 24B qui, lorsque les deux portions 21A et 21B sont rabattues l'une sur l'autre, se font face afin de composer un logement de préférence cylindrique, s'étendant sur toute la hauteur des deux dites portions. De plus, la face supérieure de chacune des portions 21A et 21B comprend une creusure 25A, respectivement 25B, dont l'utilité sera expliquée plus bas. Chacune des portions 21A et 21B comprend en outre une canalisation 26A, respectivement 26B, reliée d'un côté aux orifices d'entrée 20A, respectivement 20B et débouchant chacune par un ajutage 27A, respectivement 27B dans la paroi latérale du logement semi-cylindrique 24A, respectivement 24B.The dynamic mixer 2 according to the invention comprises a portion of fixing body, preferably consisting of a first fixed body portion 21B, and a second movable body portion 21A, the two body portions being connected by a hinge 22 and can therefore be opened, as shown in the figure, or closed as indicated by the arrow. A locking device 23, of known execution, is arranged on the faces of the two portions opposite to those comprising the hinge 22, in order to ensure closing and locking the two body portions 21A and 21B. The body portion 21A and the body portion 21B each comprise a housing, preferably of semi-cylindrical shape 24A, respectively 24B which, when the two portions 21A and 21B are folded over one another, face each other so to compose a housing preferably cylindrical, extending over the entire height of the two said portions. In addition, the upper face of each of the portions 21A and 21B comprises a recess 25A, respectively 25B, the usefulness of which will be explained below. Each of the portions 21A and 21B further comprises a pipe 26A, respectively 26B, connected on one side to the inlet orifices 20A, respectively 20B and each opening by a nozzle 27A, respectively 27B in the side wall of the semi-cylindrical housing 24A , respectively 24B.

La chambre de mélange du dispositif mélangeur dynamique selon l'invention est constituée d'une cartouche détachable 3, constituée d'un corps d'enveloppe creux 30, de préférence de forme cylindrique, mais pouvant être de toute autre forme adéquate et dont les dimensions extérieures correspondent aux dimensions du logement disposé dans la portion de fixation, respectivement dont le diamètre extérieur correspond au diamètre intérieur du logement cylindrique constitué par les deux logements semi-cylindriques 24A et 24B et dont la hauteur correspond environ à celle dudit logement cylindrique. Le corps d'enveloppe creux 30 a son extrémité supérieure ouverte, une flasque 31, de section quelconque mais non circulaire, s'étendant transversalement hors de l'extrémité supérieure du corps d'enveloppe creux 30. La forme de la flasque 31 est adaptée à celle des creusures 25A et 25B, de façon à ce que ledit corps d'enveloppe creux soit fermement maintenu à l'intérieur du logement cylindrique lorsque les deux portions 21A et 21B sont fermées, et que ledit corps d'enveloppe creux puisse facilement être introduit dans, ou extrait dudit logement cylindrique lorsque les deux portions 21A et 21B sont ouvertes. Deux orifices 32A et 32B (mieux visibles sur la figure 2), correspondant aux ajutages 27A et 27B, sont ajustés aux dimensions desdits ajutages et les mettent en liaison avec la partie intérieure dudit corps d'enveloppe creux. L'extrémité inférieure du corps d'enveloppe creux 30 est fermée sur sa plus grande partie, laissant juste un orifice de sortie 33 formé lui aussi en ajutage. A l'intérieur du corps d'enveloppe creux 30, on trouve un dispositif de brassage 34, constitué d'un corps d'axe cylindrique 35, de diamètre légèrement inférieur au diamètre intérieur du corps d'enveloppe creux 30, surmonté d'une tête d'entraînement 36, pouvant être par exemple de forme cylindrique, de diamètre plus grand, de manière à ce qu'une portion de la couronne formée par la partie extérieure de la surface inférieure de ladite tête d'entraînement puisse s'appuyer sur la face supérieure de la flasque 31. Une fente diamétrale 37 est aménagée sur la face supérieure de la tête d'entraînement 36, afin d'entraîner en rotation ledit dispositif de brassage, comme indiqué plus loin. Une ou plusieurs pales de mélange 38 sont fixées à la partie inférieure du corps d'axe cylindrique 35, de manière à utiliser au mieux l'espace de mélange situé dans la partie inférieure du corps d'enveloppe creux 30. Un joint annulaire 39, fixé à proximité de la partie inférieure du corps d'axe cylindrique 35, est destiné à assurer l'étanchéité entre l'espace de mélange et la portion de corps d'enveloppe disposée au-dessus dudit espace de mélange; le joint annulaire 39 doit aussi permettre la rotation du corps d'axe cylindrique 35 à l'intérieur du corps d'enveloppe creux 30.The mixing chamber of the dynamic mixing device according to the invention consists of a detachable cartridge 3, consisting of a hollow envelope body 30, preferably of cylindrical shape, but which can be of any other suitable shape and the dimensions of which outer correspond to the dimensions of the housing disposed in the fixing portion, respectively whose outer diameter corresponds to the inner diameter of the cylindrical housing formed by the two semi-cylindrical housings 24A and 24B and whose height corresponds approximately to that of said cylindrical housing. The hollow casing body 30 has its open upper end, a flange 31, of any cross section but not circular, extending transversely out of the upper end of the hollow casing body 30. The shape of the flange 31 is adapted to that of the hollows 25A and 25B, so that said hollow casing body is firmly held inside the cylindrical housing when the two portions 21A and 21B are closed, and that said hollow envelope body can easily be inserted into, or extracted from, said cylindrical housing when the two portions 21A and 21B are open. Two orifices 32A and 32B (better visible in FIG. 2), corresponding to the nozzles 27A and 27B, are adjusted to the dimensions of said nozzles and put them in connection with the internal part of said hollow casing body. The lower end of the hollow casing body 30 is closed for the most part, leaving just an outlet orifice 33 also formed in the nozzle. Inside the hollow envelope body 30, there is a stirring device 34, consisting of a body with a cylindrical axis 35, of diameter slightly less than the inside diameter of the hollow envelope body 30, surmounted by a drive head 36, which may for example be of cylindrical shape, of larger diameter, so that a portion of the crown formed by the outer part of the lower surface of said drive head can rest on the upper face of the flange 31. A diametrical slot 37 is provided on the upper face of the drive head 36, in order to rotate said stirring device, as indicated below. One or more mixing blades 38 are fixed to the lower part of the body of cylindrical axis 35, so as to best use the mixing space located in the lower part of the hollow casing body 30. An annular seal 39, fixed close to the lower part of the body of cylindrical axis 35, is intended to seal between the mixing space and the portion of casing body disposed above said mixing space; the annular seal 39 must also allow the body of the cylindrical axis 35 to rotate inside the hollow casing body 30.

La cartouche détachable 3 est constituée en un matériau résistant aux composants à mélanger ainsi qu'au produit terminé; vu qu'elle est généralement jetable après usage, comme on le verra plus loin, elle peut être constituée en un matériau meilleur marché, ne résistant éventuellement que pour une durée limitée aux produits mentionnés ci-dessus. Les dimensions de l'espace de brassage sont à adapter à la quantité de produit nécessaire, cette quantité pouvant être aussi faible que quelques centièmes de millilitre.The detachable cartridge 3 is made of a material resistant to the components to be mixed as well as to the finished product; since it is generally disposable after use, as will be seen below, it can be made of a cheaper material, possibly only resistant for a limited period to the products mentioned above. The dimensions of the stirring space must be adapted to the quantity of product required, this quantity possibly being as small as a few hundredths of a milliliter.

Le mélangeur dynamique 2 est complété d'une partie d'entraînement 4, visible sur la figure 1, comprenant un moteur 40, entraînant un axe 41 par l'intermédiaire, par exemple, d'un jeu de poulies et de courroie 42. La partie inférieure de l'axe 41 est munie d'un embout d'entraînement 43, comprenant une languette 44 susceptible de s'engager dans la fente diamétrale 37 de la tête d'entraînement 36. Cette partie d'entraînement 4 est relativement classique, c'est pourquoi elle n'est pas décrite plus précisément ici; le moteur 40 est de préférence un moteur électrique commandé par le dispositif de commande automatique mentionné précédemment.The dynamic mixer 2 is completed with a drive part 4, visible in FIG. 1, comprising a motor 40, driving an axis 41 by means, for example, of a set of pulleys and belt 42. The lower part of the axis 41 is provided with a drive end 43, comprising a tongue 44 capable of engaging in the diametrical slot 37 of the drive head 36. This drive part 4 is relatively conventional, this is why it is not described more precisely here; the motor 40 is preferably an electric motor controlled by the automatic control device mentioned above.

En variante, la portion de corps de fixation peut être constitué en une seule portion, la cartouche détachable 3 étant introduite par exemple par l'extrémité supérieure d'un logement aménagé à l'intérieur de ladite portion unique; dans ce cas, la partie d'entraînement 4 est pivotante ou coulissante par rapport à ladite portion unique afin de laisser la place nécessaire à l'introduction de la cartouche détachable.As a variant, the portion of the fixing body may be made up of a single portion, the detachable cartridge 3 being introduced for example by the upper end of a housing arranged inside said single portion; in this case, the drive part 4 is pivoting or sliding relative to said single portion in order to leave the space necessary for the introduction of the detachable cartridge.

On remarque en outre sur la forme d'exécution préférentielle de la cartouche détachable de la figure 2, que les axes des canalisations 26A et 26B, respectivement les ajutages 27A et 27B introduisent radialement les composants à l'intérieur de l'espace de brassage; de plus ils ne sont pas alignés face à face mais l'ajutage 27A est situé à l'opposé et au-dessus de l'ajutage 27B. De cette manière, la partie supérieure de l'espace de brassage, région où le brassage se fait le moins bien, n'est occupée que par un seul des composants du mélange, évitant ainsi un risque de transformation chimique à cet endroit qui pourrait colmater le joint 39 et empêcher la rotation du dispositif de brassage 34. De préférence, le composant introduit par l'ajutage supérieur sera celui présent en plus grande proportion dans le mélange ou alors la résine de base dudit produit, alors que l'ajutage inférieur introduira le composant intervenant en plus faible proportion ou alors le durcisseur par exemple.It is further noted on the preferred embodiment of the detachable cartridge of FIG. 2, that the axes of the pipes 26A and 26B, respectively the nozzles 27A and 27B introduce radially components inside the brewing space; moreover they are not aligned face to face but the nozzle 27A is located opposite and above the nozzle 27B. In this way, the upper part of the brewing space, the region where brewing is not as good, is occupied by only one of the components of the mixture, thus avoiding a risk of chemical transformation at this place which could clog up the seal 39 and prevent rotation of the stirring device 34. Preferably, the component introduced by the upper nozzle will be that present in greater proportion in the mixture or else the base resin of said product, while the lower nozzle will introduce the component intervening in smaller proportion or the hardener for example.

Il est maintenant possible de décrire le fonctionnement du dispositif mélangeur dynamique 2 selon l'invention en se référant à la figure 1. Lorsque le dispositif d'alimentation en composants A et B est arrêté et que les deux portions 21A et 21B sont ouvertes, il est possible d'introduire une cartouche détachable 3, constituée du corps d'enveloppe creux 30 contenant le dispositif de brassage 34 à l'intérieur du logement semi-cylindrique 24B, en veillant à ce que la flasque 31 soit bien introduite dans la creusure 25B, que l'ajutage 27B soit bien introduit dans l'orifice d'entrèe 32B et que la languette 44 soit engagée dans la fente diamétrale 37 de la tête d'entraînement 36. Il est alors maintenant possible de rabattre la portion mobile 21A sur la portion fixe 21B, le logement semi-cylindrique 24A venant entourer ainsi complètement le corps d'enveloppe creux 30, la creusure 25A venant compléter l'appui offert à la flasque 31, alors que l'ajutage 27A s'introduit dans l'orifice d'entrée 32A. Les deux portions 21A et 21B sont alors verrouillées à l'aide du dispositif 23.It is now possible to describe the operation of the dynamic mixing device 2 according to the invention with reference to FIG. 1. When the device for supplying components A and B is stopped and the two portions 21A and 21B are open, it it is possible to introduce a detachable cartridge 3, consisting of the hollow casing body 30 containing the stirring device 34 inside the semi-cylindrical housing 24B, ensuring that the flange 31 is properly inserted into the recess 25B , that the nozzle 27B is properly introduced into the inlet orifice 32B and that the tongue 44 is engaged in the diametrical slot 37 of the drive head 36. It is then now possible to fold the movable portion 21A onto the fixed portion 21B, the semi-cylindrical housing 24A thus completely surrounding the hollow casing body 30, the recess 25A coming to complement the support offered to the flange 31, while the nozzle 27A is introduced into inlet 32A. The two portions 21A and 21B are then locked at using device 23.

Le dispositif d'alimentation, respectivement les doseurs volumétriques 11 et 13, ainsi que le moteur 40 sont mis en marche par le dispositif de commande automatique, afin d'injecter dans l'espace de mélange une quantité déterminée des composants A et B et de mélanger ces deux composants à l'aide de la ou des pales de brassage 38. Lorsque les composants A et B auront été suffisamment mélangés et constitueront un produit homogène, les doseurs volumétriques 11 et 13 injecteront une nouvelle quantité des composants A et B, ce qui fera éjecter le produit mélangé par l'orifice de sortie 33, pour son utilisation dans la suite du processus. Comme indiqué précédemment, le dispositif de commande automatique est programmé afin que le produit mélangé sorte de l'orifice de sortie 33 selon les besoins, soit goutte à goutte selon un rythme déterminé, soit en un filet continu, soit alors à la demande.The feed device, the volumetric dosers 11 and 13 respectively, as well as the motor 40 are started by the automatic control device, in order to inject into the mixing space a determined quantity of components A and B and of mix these two components using the stirring paddle (s) 38. When the components A and B have been sufficiently mixed and constitute a homogeneous product, the volumetric dosers 11 and 13 will inject a new quantity of the components A and B, this which will eject the mixed product through the outlet port 33, for use in the rest of the process. As indicated above, the automatic control device is programmed so that the mixed product leaves the outlet orifice 33 as required, either drop by drop at a determined rate, or in a continuous stream, or then on demand.

En cas d'arrêt de la distribution du produit pour quelque cause que ce soit, pour une durée supérieure à celle nécessaire aux composants réunis dans l'espace de brassage pour amorcer ou accomplir leur transformation chimique, il n'est généralement pas possible de faire démarrer directement les pales de brassage vu que l'espace de brassage est rempli de matière figée. C'est à ce moment que l'on s'aperçoit de l'avantage du dispositif selon l'invention par rapport à l'art antérieur; si dans un mélangeur selon l'art antérieur il est nécessaire à ce stade de démonter le mélangeur et de nettoyer l'espace de mélange, le dispositif de brassage, ainsi que les orifices d'entrée et de sortie, opération qui peut être longue, bloquant ainsi toute la chaîne de production située en aval, et nécessiter des produits dissolvants dangereux à utiliser, il n'en est plus de même avec le dispositif mélangeur selon l'invention où il suffit d'ouvrir la portion de corps mobile 21A et de retirer la cartouche détachable 3 usagée de la portion de corps fixe 21B, pour y placer une nouvelle cartouche détachable 3, neuve et propre, de la manière décrite plus haut. Ainsi un démarrage de la chaîne de production après un arrêt d'une durée suffisante pour amorcer ou accomplir la transformation chimique des composants est beaucoup plus rapide et ne nécessite pas l'emploi de produits dangereux sur la place de production.If the distribution of the product is stopped for any reason whatsoever, for a period longer than that necessary for the components assembled in the brewing space to initiate or complete their chemical transformation, it is generally not possible to do start the stirring blades directly since the stirring space is filled with frozen material. It is at this time that one realizes the advantage of the device according to the invention compared to the prior art; if in a mixer according to the prior art it is necessary at this stage to dismantle the mixer and to clean the mixing space, the stirring device, as well as the inlet and outlet ports, an operation which can be long, thus blocking the entire production chain located downstream, and requiring dangerous solvents to use, it is no longer the same with the mixing device according to the invention where it suffices to open the movable body portion 21A and to remove the used detachable cartridge 3 from the fixed body portion 21B, to place there a new detachable cartridge 3, new and clean, as described above . Thus a start of the production chain after a stop of sufficient time to initiate or complete the chemical transformation of the components is much faster and does not require the use of dangerous products on the place of production.

De préférence la cartouche détachable, comprenant le corps d'enveloppe creux et le corps de brassage est conçue de manière à pouvoir être produite en quantité à bon marché; ainsi l'opération de nettoyage est directement supprimée, la cartouche détachable étant jetée lorsqu'elle est encrassée. En variante, et selon les produits utilisés, il est possible de récupérer la cartouche détachable, complètement ou seulement une de ses parties, en la nettoyant d'une manière appropriée, indépendamment du cycle de production.Preferably the detachable cartridge comprising the hollow casing body and the stirring body is designed so that it can be produced in quantity at low cost; thus the cleaning operation is directly eliminated, the detachable cartridge being thrown away when it is dirty. As a variant, and depending on the products used, it is possible to recover the detachable cartridge, completely or only one of its parts, by cleaning it in an appropriate manner, independently of the production cycle.

La description ci-dessus ainsi que les figures décrivent un dispositif mélangeur de deux composants; il est bien entendu que le procédé ainsi que le dispositif selon l'invention s'appliquent tout aussi bien à des mélanges de plus de deux composants, le nombre de canalisations ainsi que d'ajutages d'entrée correspondant étant à prévoir dans les portions de corps du mélangeur de même que le corps d'enveloppe creux de la cartouche détachable sera muni du nombre correspondant d'orifices d'entrée.The above description as well as the figures describe a device for mixing two components; it is understood that the method and the device according to the invention apply equally well to mixtures of more than two components, the number of pipes as well as corresponding inlet nozzles being to be provided in the portions of mixer body as well as the hollow casing body of the detachable cartridge will be provided with the corresponding number of inlet ports.

Il est tout aussi possible que l'un des produits introduit dans l'espace de brassage ne soit pas un composant intervenant directement dans la composition du produit terminé, mais soit par exemple un diluant, un solvant ou un produit quelconque chargé éven tuellement de retarder l'apparition de la réaction chimique ou alors de rincer l'espace de brassage avant ou après utilisation; dans ce cas le dispositif de commande automatique de processus commandera l'introduction dudit produit quelconque indépendamment de l'introduction des composants nécessaires à la fabrication du produit terminé.It is also possible that one of the products introduced into the brewing space is not a component directly involved in the composition of the finished product, but is for example a diluent, a solvent or any product loaded with to delay the onset of the chemical reaction or to rinse the mixing space before or after use; in this case the automatic process control device will control the introduction of said product whatever independently of the introduction of the components necessary for the manufacture of the finished product.

De même, le dispositif mélangeur a été décrit avec un ajutage d'entrée débouchant depuis la portion de corps fixe et un autre ajutage d'entrée débouchant depuis la portion de corps mobile; il est évident qu'il est aussi possible de faire déboucher les ajutages d'entrée depuis la même portion de corps, que ce soit la portion de corps fixe ou la portion de corps mobile.Likewise, the mixing device has been described with an inlet nozzle opening out from the fixed body portion and another inlet nozzle opening out from the movable body portion; it is obvious that it is also possible to unblock the inlet nozzles from the same body portion, whether it is the fixed body portion or the movable body portion.

En variante, et pour certains types de composants à mélanger, il peut ne pas être nécessaire que les orifices d'entrée des composants dans la cartouche soient disposés dans des plans successifs; dans ce cas ils pourraient être disposés côte à côte dans un même plan. De même, l'entrée radiale des composants peut s'avérer parfois impropre à une bonne conduite du procédé; dans ce cas, les orifices peuvent être conçus pour que les composants ne pénètrent pas radialement mais obliquement, de préférence dirigés vers le bas de la chambre de mélange.As a variant, and for certain types of components to be mixed, it may not be necessary for the inlet orifices of the components in the cartridge to be arranged in successive planes; in this case they could be arranged side by side in the same plane. Likewise, the radial entry of the components can sometimes prove to be unsuitable for proper control of the process; in this case, the orifices can be designed so that the components do not penetrate radially but obliquely, preferably directed towards the bottom of the mixing chamber.

Une autre variante du dispositif décrit comprend un perfectionnement permettant d'introduire plus facilement la languette 44 de l'embout d'entraînement 43 dans la fente 37 de la tête d'entraînement 36, en prévoyant que ledit embout d'entraînement est coulissant sur l'axe 41.Another variant of the device described comprises an improvement making it easier to introduce the tongue 44 of the drive end 43 into the slot 37 of the drive head 36, by providing that said drive end is sliding on the axis 41.

Le procédé, le dispositif mélangeur et la cartouche selon l'invention permettent donc de faciliter l'utilisation de produits à plusieurs composants en évitant l'opération de nettoyage de la chambre de mélange du mélangeur après un arrêt d'une certaine durée, amenant ainsi à une augmentation de la cadence de production, respectivement une diminution des coûts de production.The method, the mixing device and the cartridge according to the invention therefore make it possible to facilitate the use of products with several components in avoiding the operation of cleaning the mixing chamber of the mixer after a shutdown for a certain period, thus leading to an increase in the production rate, respectively a reduction in production costs.

Claims (12)

  1. Method of mixing a plurality of components (A, B) of a product, the said mixture being made inside a detachable portion (3) of a dynamic mixer (2), characterized in that the diverse components to be mixed of the said product are introduced in the said detachable portion through the orifices (32A, 32B) disposed on at least one lateral face of the said detachable portion, the mixture being made by an own stirring device (34, 38) of the said detachable portion.
  2. Method according to claim 1, characterized in that the components to be mixed are introduced radially in the detachable portion.
  3. Method according to claim 1, characterized in that the components to be mixed are introduced obliquely in the detachable portion.
  4. Method according to one of the claims 1 to 3, characterized in that the orifices of introduction of the components (32A, 32B) are disposed in successive transverse planes along the longitudinal axis of the said detachable portion.
  5. Method according to claim 4, characterized in that the component (A) corresponding to the resin or to the basic component of the product is introduced through the first (32A) of the said orifices, respectively the orifice placed in upper position or upstream.
  6. Method according to claim 4, characterized in that the intervening component of highest proportion in the said product is introduced through the first (32A) of the said orifices, respectively the orifice placed in upper position or upstream.
  7. Dynamic mixing device of a plurality of components of a product for carrying out the method according to one of the preceding claims, characterized in that it comprises:
    - a portion of the fixing element (21A; 21B),
    - means for driving in rotation (4, 43),
    - a detachable element portion arranged in the mixing chamber and made up of a detachable cartridge (3) according to any one of the claims 9 to 12, disposed in a housing (24A, 24B) situated on the inside of the said portion of the fixing element, the stirring device (36, 38) of the said cartridge (3) is driven in rotation by the said means of driving in rotation (4, 43), and the orifices of introduction of components (32A, 32B) of the said cartridge (3) are connected to pipes (26A, 26B) disposed in the portion of the fixing element.
  8. Device according to claim 7, characterized in that the portion of the fixing element is made up of
    - a first fixed portion (21B) of the element,
    - a second portion (21A) of the element, which portion is mobile with respect to the said first portion of the element,
    - means of clamping (23) the mobile portion (21A) of the element against the fixed portion (21B) of the element.
  9. Detachable cartridge (3) for use in the device of claim 7, characterized in that it comprises:
    - a hollow cover element (30) whose one first end includes an outlet orifice (33),
    - a mixing device (34) disposed inside the said hollow cover element and whose one part situated on the side of the said first end includes a mixing blade (38) while a part situated on the opposite side of the said first end includes means (36, 37) of connection to means of driving in rotation,
    - a plurality of orifices of introduction of components (32A, 32B) disposed on at least one lateral face of the said cartridge.
  10. Cartridge according to claim 9, characterized in that the orifices of introduction are arranged for introduction of the components to take place radially.
  11. Cartridge according to claim 9, characterized in that the orifices of introduction are arranged for introduction of the components to take place obliquely.
  12. Cartridge according to one of the claims 9 to 11, characterized in that the orifices of introduction are disposed on successive transverse planes along the longitudinal axis of the said hollow cover element.
EP92810227A 1991-03-28 1992-03-27 Method and dynamic mixing device Expired - Lifetime EP0507737B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH953/91 1991-03-28
CH95391 1991-03-28

Publications (2)

Publication Number Publication Date
EP0507737A1 EP0507737A1 (en) 1992-10-07
EP0507737B1 true EP0507737B1 (en) 1995-08-09

Family

ID=4199019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810227A Expired - Lifetime EP0507737B1 (en) 1991-03-28 1992-03-27 Method and dynamic mixing device

Country Status (2)

Country Link
EP (1) EP0507737B1 (en)
DE (1) DE69203912T2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10235142A1 (en) 2002-08-01 2004-02-19 Shw Casting Technologies Gmbh Roller for thermally pressure treating strip-like media, such as paper or fleece, in a multiple roller calender comprises a base body made from tempered forged steel or alloyed cast iron

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1457182C3 (en) * 1965-07-26 1975-04-24 Wacker Chemie Gmbh Device for continuous mixing
BE756660A (en) * 1969-09-27 1971-03-01 Bayer Ag MIXING HEAD FOR MIXING CHEMICAL COMPONENTS RAPIDLY REACTING WITH ONE ANOTHER
US4889432A (en) * 1989-02-07 1989-12-26 Roosevelt Patterson Dental mixer apparatus
FR2648390B1 (en) * 1989-06-14 1991-12-13 Salomon Sa MIXER DEVICE FOR THE PREPARATION OF INJECTION PRODUCTS FOR THE PRODUCTION OF ANATOMIC PADDING IN A SHOE
US4951843A (en) * 1989-08-16 1990-08-28 Sealant Equipment & Engineering, Inc. Disposable mixing chamber liner and paddle for a dynamic mixing and dispensing gun

Also Published As

Publication number Publication date
DE69203912T2 (en) 1996-04-04
DE69203912D1 (en) 1995-09-14
EP0507737A1 (en) 1992-10-07

Similar Documents

Publication Publication Date Title
EP0512470B1 (en) Method of producing beverages using sealed cartridges and apparatus for carrying out this method
WO2006114496A1 (en) Method for mixing dental impression pastes, mixer and bowl for mixing
EP1353591B1 (en) Device for injecting water into an apparatus for preparing a beverage from a capsule
FR2511889A1 (en)
FR2471331A1 (en) APPARATUS FOR DISTRIBUTING PASTA WITH MULTIPLE COMPONENTS
FR2754474A1 (en) DEVICE FOR THE DEPOSIT OF A VISCOUS OR PASTE ON A SUBSTRATE THROUGH THE OPENINGS OF A STENCIL
LU86512A1 (en) PISTOL FOR MIXING AND DISPENSING REACTIVE CHEMICALS
CH639009A5 (en) DEVICE FOR DISPENSING HOT-MELTING ADHESIVE FOAM.
FR2566680A1 (en) NOZZLE OF MIXING AND DISTRIBUTION
EP2943284A1 (en) Disposable assembly for preparing and working paint or for spraying a product resulting from mixing at least two components, to be used as a bucket on a spraying tool
EP0561683A1 (en) Screw-type kneading machine, in particular for foundry moulds
EP0507737B1 (en) Method and dynamic mixing device
FR2787311A1 (en) Multi-function food processor, has working vessel having rounded corners with blade following the rounded curvature of the vessel
WO1994016753A1 (en) Syringe for administering a given number of injections
EP0465980B1 (en) Dosing device for granular or powdered products and mixing method of raw rubber using the same
FR2528706A1 (en) IMPROVED DOUBLE-COMPARTMENT SYRINGE
EP3463633B1 (en) Mixing paddle for appliance for preparing animal feed, and method for preparing animal feed
CA2137740A1 (en) Air tight apparatus for preparing a cosmetic paste
FR2497176A1 (en) ADHESIVE DISPENSING DEVICE WITH TIP, DISPENSER AND DEVICE LATCHING SYSTEM
EP3960283A1 (en) Mixing device for multiple components and associated method
EP1348364A1 (en) Apparatus and procedure for automatically preparing and distributing soluble drinks
FR2771383A1 (en) DEVICE FOR THE EXTEMPORANEOUS MIXING OF TWO PRODUCTS
EP1169116A2 (en) Mixer for liquid or solid substances
EP3463006B1 (en) Ground coffee dispenser for a coffee machine provided with a turbine with curved blades
WO2017203152A1 (en) Apparatus for preparing feed for animals

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE FR GB IT LI

17P Request for examination filed

Effective date: 19930122

17Q First examination report despatched

Effective date: 19940613

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE FR GB IT LI

REF Corresponds to:

Ref document number: 69203912

Country of ref document: DE

Date of ref document: 19950914

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19951020

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19970210

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970220

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19970224

Year of fee payment: 6

REG Reference to a national code

Ref country code: CH

Ref legal event code: PLI

Owner name: OCTAL TECHNOLOGIES CH. KRUMM TRANSFER- HORMEC TECH

Ref country code: CH

Ref legal event code: PFA

Free format text: OCTAL TECHNOLOGIES CH KRUMM,9, CHEMINS DES BARQUES,2503 BIEL/BIENNE (CH) TRANSFER- OCTAL TECHNOLOGIES CH. KRUMM,LE QUART 9,2607 CORTEBERT (CH)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19980225

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19980310

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980327

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19980331

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Free format text: OCTAL TECHNOLOGIES CH. KRUMM,LE QUART 9,2607 CORTEBERT (CH) TRANSFER- OCTAL TECHNOLOGIES CH KRUMM,LE QUART 6,2607 CORTEBERT (CH)

BERE Be: lapsed

Owner name: OCTAL TECHNOLOGIES CH KRUMM

Effective date: 19980331

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980327

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990331

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050327