EP0255438A1 - Metering valve - Google Patents

Metering valve Download PDF

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Publication number
EP0255438A1
EP0255438A1 EP19870401747 EP87401747A EP0255438A1 EP 0255438 A1 EP0255438 A1 EP 0255438A1 EP 19870401747 EP19870401747 EP 19870401747 EP 87401747 A EP87401747 A EP 87401747A EP 0255438 A1 EP0255438 A1 EP 0255438A1
Authority
EP
European Patent Office
Prior art keywords
threshold
valve
cup
airlock
valve according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19870401747
Other languages
German (de)
French (fr)
Other versions
EP0255438B1 (en
Inventor
Jean-Louis Bougamont
Alain Behar
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.)
Francaise D'aerosols Et De Bouchage Te Le Ste
Original Assignee
Sofab SA
Societe Francaise dAerosols et de Bouchage
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Filing date
Publication date
Application filed by Sofab SA, Societe Francaise dAerosols et de Bouchage filed Critical Sofab SA
Priority to AT87401747T priority Critical patent/ATE63284T1/en
Publication of EP0255438A1 publication Critical patent/EP0255438A1/en
Application granted granted Critical
Publication of EP0255438B1 publication Critical patent/EP0255438B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/44—Valves specially adapted therefor; Regulating devices
    • B65D83/52—Valves specially adapted therefor; Regulating devices for metering
    • B65D83/54—Metering valves ; Metering valve assemblies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/42—Filling or charging means
    • B65D83/425—Delivery valves permitting filling or charging

Definitions

  • the subject of the invention is a valve making it possible to dispense a measured quantity of a product in a liquid medium, from a container where this product is enclosed in solution or suspension in a liquid having a high vapor pressure, which allows to drive it outside and as a general rule to spray it in the form of an aerosol.
  • valves are well known: they take the form of a double valve. They thus comprise a hollow body mainly consisting of a cylindrical casing of rigid material, closed by a cup which, as a general rule, also makes it possible to fix it on the container, and provided, on the other hand, with an orifice admission.
  • the intake port carries a intake tube if it is desired that, to expel the product, the valve, for convenience, be used in the high position, above the container; on the contrary, it is placed immediately upstream of the previous threshold if, to increase the precision, it is preferred to use it in the low position, container turned upside down.
  • control rod carries an axial discharge channel; it thus forms with the distributor a nozzle, the tube of which supplies a spray nozzle mounted on the head.
  • Each of the two seals which equip the thresholds of the chamber is generally a simple sliding seal, flat or lip, inside which the nozzle passes, made of a rigid plastic material. But for the valve to have a perfect seal at rest, it is then necessary that the seal of the external or posterior threshold is made of elastomer, the distributor carrying a shoulder which comes to bear thereon.
  • the seal of the internal or anterior threshold ordinarily plays a role only during operation, that is to say for a limited time. It therefore does not require such perfect sealing; on the other hand, it is in permanent contact with the liquid: this is why it is sometimes an integral part of the casing, despite the rigidity of the material used to manufacture it.
  • the two seals are immobilized using a waterproof sleeve made of an inexpensive semi-rigid plastic material, the thickness of which can also be varied to modify the internal volume of the chamber without affecting a complex piece.
  • valves in question are filled by intrusion or break-in, that is to say that the tube is put in place on a pump which then injects the necessary quantity of product, in the liquid state, under strong pressure: the latter then discards at least one of the seals to find a channel which allows it to fill the container.
  • intrusion or break-in that is to say that the tube is put in place on a pump which then injects the necessary quantity of product, in the liquid state, under strong pressure: the latter then discards at least one of the seals to find a channel which allows it to fill the container.
  • the above threshold advantageously forms a guide bearing for the dispenser which is thus free from undercut therefore also from any lateral seam detrimental to the seal.
  • this front threshold and the socket will be made in one piece.
  • the body of the valve of FIG. 1 consists of a casing 1 carrying a socket 2 and closed by a cup 3 enclosing a seal 4.
  • the housing is made of a rigid resin, such as a polyacetal. At its lower part, its wall narrows by a conical bearing 1 a to form without undercut an anterior chamber 1 b carrying a pick-up tube 5.
  • the sleeve is formed of a semi-polyethylene rigid. Its side wall 2 a , provided with a flange 2 b , is extended at its lower part by a conical veil 2 c carrying a flange 2 d to form the front threshold 6. It is freely adjusted in the housing and, at the tolerances, its conical web 2 c comes along the span 1 a .
  • the elastomer seal 4 acts as a rear sill.
  • the cup 3, metallic, and set at 3 a on the casing, thus immobilizes it with the socket, taken by its flange 2 b in a housing provided at the upper part of the casing, defining an airlock chamber 7; its skirt, carrying a seal 8, will be crimped again, in 3 b , on the container 9.
  • a spring 10 is mounted, then the nozzle 11, formed in turn of polyacetal.
  • This comprises a plug 12, extended through the joint 4 by a tubular rod 13, the central channel 13 a of which , in the present case, opens at its lower part by a lateral orifice 13 b outside the valve, at its axial outlet through an orifice 13 c capable of supplying the spray nozzle of the push button nozzle, not shown, which adapts to it.
  • the plug 12 carries a flange 12 a , the upper shoulder of which bears in tight seal on the seal 4. Its lower part is cylindrical, except that grooves 12 b form a passage inside the threshold 6, and that its end serves as a support for the spring 10, without there being undercuts.
  • the passage open under the posterior seal closes in the first place, restoring the container sufficient tightness; then the anterior passage opens, allowing liquid to enter the chamber under the effect of the depression thus created.
  • valve of FIG. 2 is shown assembled and during filling, placed on the nozzle of a pump 14, nozzle pressed in.
  • the main difference is that, intended to be used upside down, it has no intake tube but at least one inlet 15 placed in the chamber 1b of the spring closest to the chamber 7 of the airlock.
  • the side wall 2a of the sleeve used is thicker, so that the volume of the chamber is lower, and devoid of flange but taken over its entire height and therefore may be in two parts, while the collar 2 d is replaced by a simple oblique lip.
  • the bearing surface 1 a is formed by a number of bosses 1 c bearing on the web 2 c , but which are separated from the internal grooves; these bosses allow the lip edge to play, so that the seal is obtained without tightening.
  • the wall of the casing bears on the external face of its reinforced upper part, a groove 1 d which opens on the one hand on the side of the joint 4, by slots, on the other hand on the upper face of the joint 8 for assembly on the container.
  • the valve For filling, once the valve has been adapted, by its tube 13, on the pump 14, the latter injects the liquid there.
  • the pumping pressure then has the effect of driving the nozzle back into a position identical to the spraying position, allowing the liquid to penetrate rather by the tube than along the joint 4 in the direction of the chamber 7 but also closing the passage along the threshold seal 6.
  • the rise in pressure in the chamber does not significantly deform this threshold because the bearing web 2 c rests on the surface 1 a .
  • the liquid can hardly flow along this seal but, deforming the seal 4, infiltrates in the direction of the groove 1 d to push the seal 8 inward, which allows it to penetrate quickly , according to the arrows, in container 9.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Multiple-Way Valves (AREA)
  • Fluid-Driven Valves (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

L'invention a pour objet une valve doseuse comprenant un corps constitué d'un carter (1) cylindrique en matériau rigide fermé par une coupelle (3), où deux seuils à joints étanches créent un sas et à l'intérieur duquel se déplace un gicleur (11) doté d'un distributeur coulissant, guidé à ses extrémités, qu'un ressort de rappel (10) placé en amont renvoie vers la coupelle. Cette valve possède une douille (2) permettant de modifier le volume de la chambre (7) du sas, et un seuil antérieur (6), rapportés et constitués d'une matière plastique semi-rigide, le seuil se trouvant au voisinage immédiat d'une portée (1a) du carter, l'intrusion du liquide lors du remplissage se produisant par une voie auxiliaire (1d).The subject of the invention is a metering valve comprising a body consisting of a cylindrical casing (1) made of rigid material closed by a cup (3), where two thresholds with sealed joints create an airlock and inside which moves a nozzle (11) provided with a sliding distributor, guided at its ends, which a return spring (10) placed upstream returns towards the cup. This valve has a socket (2) for modifying the volume of the chamber (7) of the airlock, and an anterior threshold (6), attached and made of a semi-rigid plastic material, the threshold being in the immediate vicinity d 'A range (1a) of the housing, the intrusion of the liquid during filling occurs by an auxiliary channel (1d).

Description

L'invention a pour objet une valve permettant de distribuer une quantité mesurée d'un produit en milieu liquide, à partir d'un récipient ou ce produit se trouve enfermé en solution ou suspension dans un liquide possédant une tension de vapeur élevée, qui permet de le chasser à l'extérieur et en règle générale de le pulvériser sous forme d'aérosol.The subject of the invention is a valve making it possible to dispense a measured quantity of a product in a liquid medium, from a container where this product is enclosed in solution or suspension in a liquid having a high vapor pressure, which allows to drive it outside and as a general rule to spray it in the form of an aerosol.

De telles valves sont bien connues : elles revètent la forme d'un double clapet. Elles comprennent ainsi un corps creux principalement constitué d'un carter cylindrique en matériau rigide, fermé par une coupelle qui, en règle générale, permet également de le fixer sur le récipient, et muni, à l'opposé, d'un orifice d'admission.Such valves are well known: they take the form of a double valve. They thus comprise a hollow body mainly consisting of a cylindrical casing of rigid material, closed by a cup which, as a general rule, also makes it possible to fix it on the container, and provided, on the other hand, with an orifice admission.

Deux seuils à joints étanches y créent un sas à l'intérieur duquel se déplace, guidé à ses extrémités, un distributeur qu'un ressort de rappel renvoie vers la coupelle ; prolongé à travers cette coupelle par une tige de commande permettant de le déplacer à l'aide d'une tête à bouton poussoir, ce distributeur présente deux séries de canaux : les uns mettent la chambre du sas en communication avec le liquide à l'intérieur du récipient tant que la valve est en position de repos ou en tout cas dès qu'elle quitte cette position, laissant ainsi la chambre s'alimenter ; les autres l'ouvrent à l'extérieur aussitôt que le poussoir est assez enfoncé, pour libérer son contenu sous le seul effet de la pression qui règne à l'intérieur ou même avec pompage.Two thresholds with watertight joints create an airlock inside which moves, guided at its ends, a distributor which a return spring returns towards the cup; extended through this cup by a control rod allowing it to be moved using a push button head, this distributor has two series of channels: some put the airlock chamber in communication with the liquid inside of the container as long as the valve is in the rest position or in any case as soon as it leaves this position, thus allowing the chamber to feed; the others open it outside as soon as the pusher is pressed enough, to release its contents under the sole effect of the pressure that prevails inside or even with pumping.

L'orifice d'admission porte un tube de prise si l'on désire que, pour expulser le produit, la valve, par commodité, s'utilise en position haute, au-dessus du récipient ; il est au contraire placé immédiatement en amont du seuil antérieur si, pour augmenter la précision, on préfère employer celle-ci en position basse, récipient retourné.The intake port carries a intake tube if it is desired that, to expel the product, the valve, for convenience, be used in the high position, above the container; on the contrary, it is placed immediately upstream of the previous threshold if, to increase the precision, it is preferred to use it in the low position, container turned upside down.

Habituellement, la tige de commande porte un canal d'évacuation axial ; elle forme ainsi avec le distributeur un gicleur dont le tube permet d'alimenter une buse de pulvérisation montée sur la tête.Usually, the control rod carries an axial discharge channel; it thus forms with the distributor a nozzle, the tube of which supplies a spray nozzle mounted on the head.

Chacun des deux joints qui équipent les seuils de la chambre est en règle générale un simple joint coulissant, plat ou à lèvre, à l'intérieur duquel passe le gicleur, constitué d'un matériau plastique rigide. Mais pour que la valve possède une étanchéité parfaite au repos, il faut alors que le joint du seuil externe ou postérieur soit en élastomère, le distributeur portant un épaulement qui vient à ce moment s'y appuyer.Each of the two seals which equip the thresholds of the chamber is generally a simple sliding seal, flat or lip, inside which the nozzle passes, made of a rigid plastic material. But for the valve to have a perfect seal at rest, it is then necessary that the seal of the external or posterior threshold is made of elastomer, the distributor carrying a shoulder which comes to bear thereon.

Au contraire le joint du seuil interne ou antérieur ne joue ordinairement un rôle que pendant le fonctionnement, c'est-à-dire pendant un temps limité. Il ne requiert donc pas une étanchéité aussi parfaite ; par contre, il est en parmanence au contact du liquide : c'est pourquoi il fait parfois partie intégrante du carter, malgré la rigidité de la matière employée pour fabriquer celui-ci.On the contrary, the seal of the internal or anterior threshold ordinarily plays a role only during operation, that is to say for a limited time. It therefore does not require such perfect sealing; on the other hand, it is in permanent contact with the liquid: this is why it is sometimes an integral part of the casing, despite the rigidity of the material used to manufacture it.

Cependant, même faible, une fuite sur ce joint influe sur la quantité débitée ; or ces valves sont souvent utilisées pour distribuer des produits, en particulier des médicaments, dont on désire délivrer une dose très faible et cependant exacte. De plus le ressort, pièce peu précise, se place avantageusement dans une chambre d'admission, en amont du seuil en question, plutôt que dans la chambre du sas : la solution précédente devient alors couteuse car elle conduit à introduire des contre-dépouilles. Aussi adopte-t-on en règle générale un second joint démontable en élastomère, malgré son moins bon comportement chimique.However, even small, a leak on this seal influences the quantity delivered; However, these valves are often used to dispense products, in particular medicines, for which it is desired to deliver a very low and yet exact dose. In addition, the spring, an imprecise part, is advantageously placed in an intake chamber, upstream of the threshold in question, rather than in the airlock chamber: the previous solution then becomes expensive because it leads to the introduction of undercuts. As a general rule, a second removable elastomer seal is adopted, despite its less good chemical behavior.

Très fréquemment on immobilise les deux joints à l'aide d'une douille étanche constituée d'une matière plastique semi-rigide, peu coûteuse, dont on peut au surplus faire varier l'épaisseur pour modifier le volume interne de la chambre sans jouer sur une pièce complexe.Very often the two seals are immobilized using a waterproof sleeve made of an inexpensive semi-rigid plastic material, the thickness of which can also be varied to modify the internal volume of the chamber without affecting a complex piece.

En particulier, la publication de brevet FR 2 494 390, qui décrit une valve à joint antérieur de forme conique, à lèvre, précise que la douille pourrait être fabriquée d'un seul tenant avec lui, mais avec l'inconvénient d'exiger qu'elle fût constituée de la même matière coûteuse.In particular, the patent publication FR 2 494 390, which describes a valve with an anterior seal of conical shape, with lip, specifies that the sleeve could be manufactured in a single piece with it, but with the disadvantage of requiring that 'it was made of the same expensive material.

Il est exact que ceci permettrait de supprimer une pièce et de simplifier le montage au prix d'une légère augmentation du prix de l'outillage mais sans que l'avantage obtenu compense les inconvénients ci-dessous. Il faut ajouter que la précision de la valve risquerait de souffrir de l'emploi d'une douille élastique.It is true that this would make it possible to remove a part and simplify assembly at the cost of a slight increase in the price of the tool, but without the advantage obtained compensating for the disadvantages below. It should be added that the accuracy of the valve could suffer from the use of an elastic sleeve.

D'une manière générale, les valves en question sont remplies par intrusion ou effraction, c'est-à-dire que le tube est mis en place sur une pompe qui injecte alors la quantité nécessaire de produit, à l'état liquide, sous une forte pression : celui-ci écarte alors l'un au moins des joints pour trouver un chenal qui lui permet de remplir le récipient. On profite généralement d'une dissymétrie de structure du joint en question pour en faciliter l'ouverture lorsqu'il est pris à revers, sous l'effet de la forte différence de pression qu'il subit alors.In general, the valves in question are filled by intrusion or break-in, that is to say that the tube is put in place on a pump which then injects the necessary quantity of product, in the liquid state, under strong pressure: the latter then discards at least one of the seals to find a channel which allows it to fill the container. We generally take advantage of an asymmetry in the structure of the joint in question to facilitate opening when it is taken backwards, under the effect of the large pressure difference which it then undergoes.

Fréquemment, c'est donc le joint antérieur qui se trouve forcé mais, s'il n'est pas élastique, une disposition spéciale permettra au joint postérieur de jouer à sa place, à moins encore qu'on ne recoure à l'emploi d'un joint auxiliaire.Frequently, it is therefore the anterior joint which is forced but, if it is not elastic, a special arrangement will allow the posterior joint to play in its place, unless recourse is had to the use of an auxiliary joint.

Selon l'invention et contrairement aux indications de la publication précitée, il est possible d'obtenir un joint étanche en employant pour former le seuil antérieur rapporté une matière plastique semi-rigide, analogue ou mieux identique à celle de la douille elle-même, à condition bien entendu de permettre l'effraction par une autre voie, en particulier par le joint postérieur.According to the invention and contrary to the indications of the abovementioned publication, it is possible to obtain a leaktight seal by using a semi-rigid plastic material, analogous or better identical to that of the bushing itself, to form the added front threshold, provided of course to allow the break-in by another way, in particular by the posterior joint.

On évite alors les inconvénients de chacune des solutions précédentes, à condition de prévoir sur le carter, en amont de ce seuil, aussi près de lui que le permettent les tolérances de fabrication, une portée apte à lui servir d'appui jusqu'au plus près du distributeur, sans lui interdire toute déformation radiale.The drawbacks of each of the preceding solutions are then avoided, provided that on the casing, upstream of this threshold, as close to it as the manufacturing tolerances allow, a bearing capable of serving it as a support up to the most near the distributor, without preventing it from any radial deformation.

Au remplissage, la pression du liquide s'exerçant sur le seuil à revers lors de l'effraction, cette portée maintient sa déformation en dessous de la limite élastique, laissant au besoin pénétrer directement une partie du liquide mais incapable de modifier de façon permanente le volume de la chambre ; il en résulte que la précision de la valve n'est pas altérée lors du remplissage.When filling, the pressure of the liquid being exerted on the backhand threshold during the break-in, this span keeps its deformation below the elastic limit, allowing part of the liquid to penetrate directly if necessary, but incapable of permanently modifying the chamber volume; it follows that the accuracy of the valve is not altered during filling.

Le seuil ci-dessus forme avantageusement palier de guidage pour le distributeur qui se trouve ainsi exempt de contre-dépouille donc aussi de toute couture latérale nuisible à l'étanchéité.The above threshold advantageously forms a guide bearing for the dispenser which is thus free from undercut therefore also from any lateral seam detrimental to the seal.

Enfin, de préférence, on constituera d'un seul tenant ce seuil antérieur et la douille.Finally, preferably, this front threshold and the socket will be made in one piece.

La solution décrite concilie une parfaite efficacité et un bas prix de revient puisque toutes les pièces sont d'exécution facile, la plupart d'entre elles utilisant en outre un matériau peu coûteux.The solution described reconciles perfect efficiency and low cost since all the parts are easy to execute, most of them also using an inexpensive material.

D'autres caractéristiques de l'invention ressortiront de deux exemples, décrits en référence aux dessins qui montrent en coupe :

  • - figure 1 : une valve selon l'invention en position de repos,
  • - figure 2 : une valve analogue, gicleur enfoncé, lors du remplissage par effraction.
Other characteristics of the invention will emerge from two examples, described with reference to the drawings which show in section:
  • FIG. 1 : a valve according to the invention in the rest position,
  • - Figure 2 : a similar valve, nozzle inserted, during filling by break-in.

Le corps de la valve de la figure 1 est constitué d'un carter 1 porteur d'une douille 2 et fermé par une coupelle 3 enfermant un joint 4.The body of the valve of FIG. 1 consists of a casing 1 carrying a socket 2 and closed by a cup 3 enclosing a seal 4.

Le carter est constitué d'une résine rigide, tel un polyacétal. A sa partie inférieure, sa paroi se rétrécit par une portée conique 1a pour former sans contre-dépouille une chambre antérieure 1b porteuse d'un tube de prise 5.The housing is made of a rigid resin, such as a polyacetal. At its lower part, its wall narrows by a conical bearing 1 a to form without undercut an anterior chamber 1 b carrying a pick-up tube 5.

La douille, au contraire, est formée d'un polyéthylène semi-­ rigide. Sa paroi latérale 2a, munie d'une bride 2b, est prolongée à sa partie inférieure par un voile conique 2c porteur d'une collerette 2d pour former le seuil antérieur 6. Elle est ajustée librement dans le carter et, aux tolérances près, son voile conique 2c vient longer la portée 1a.The sleeve, on the contrary, is formed of a semi-polyethylene rigid. Its side wall 2 a , provided with a flange 2 b , is extended at its lower part by a conical veil 2 c carrying a flange 2 d to form the front threshold 6. It is freely adjusted in the housing and, at the tolerances, its conical web 2 c comes along the span 1 a .

Le joint en élastomère 4 joue le rôle de seuil postérieur. La coupelle 3, métallique, et sertie en 3a sur le carter, l'immobilise ainsi avec la douille, prise par sa bride 2b dans un logement prévu à la partie supérieure du carter, définissant une chambre de sas 7 ; sa jupe, porteuse d'un joint d'étanchéité 8, sera à nouveau sertie, en 3b, sur le récipient 9.The elastomer seal 4 acts as a rear sill. The cup 3, metallic, and set at 3 a on the casing, thus immobilizes it with the socket, taken by its flange 2 b in a housing provided at the upper part of the casing, defining an airlock chamber 7; its skirt, carrying a seal 8, will be crimped again, in 3 b , on the container 9.

A l'intérieur du corps, avant pose de la coupelle 3, sont montés un ressort 10 puis le gicleur 11, formé à son tour de polyacétal. Celui-ci comprend un boisseau 12, prolongé à travers le joint 4 par une tige tubulaire 13 dont le canal central 13a, dans le cas présent, débouche à sa partie inférieure par un orifice latéral 13b à l'extérieur de la valve, à sa sortie axiale par un orifice 13c apte à alimenter la buse de pulvérisation de l'embout à bouton poussoir non représenté qui s'y adapte. Le boisseau 12 porte une collerette 12a dont l'épaulement supérieur vient en appui étanche sur le joint 4. Sa partie basse est cylindrique, si ce n'est que des rainures 12b forment un passage à l'intérieur du seuil 6, et que son extrémité sert d'appui au ressort 10, sans qu'il existe de contre-dépouilles.Inside the body, before fitting the cup 3, a spring 10 is mounted, then the nozzle 11, formed in turn of polyacetal. This comprises a plug 12, extended through the joint 4 by a tubular rod 13, the central channel 13 a of which , in the present case, opens at its lower part by a lateral orifice 13 b outside the valve, at its axial outlet through an orifice 13 c capable of supplying the spray nozzle of the push button nozzle, not shown, which adapts to it. The plug 12 carries a flange 12 a , the upper shoulder of which bears in tight seal on the seal 4. Its lower part is cylindrical, except that grooves 12 b form a passage inside the threshold 6, and that its end serves as a support for the spring 10, without there being undercuts.

Le seuil 6, outre son rôle de joint, joue celui de palier pour le boisseau du distributeur ainsi constitué. Il est facile de se rendre compte que lorsqu'on appuie sur l'embout qui en constitue la tête, ce distributeur vient d'abord fermer le passage antérieur sur le seuil 6, enfermant dans la chambre 7 un volume déterminé de fluide, puis dégage l'orifice 13b, permettant à ce volume de s'échapper sous l'effet de la pression de vapeur du liquide porteur.The threshold 6, in addition to its role of seal, plays that of bearing for the valve of the distributor thus formed. It is easy to realize that when the tip which constitutes its head is pressed, this distributor first of all closes the anterior passage on the threshold 6, enclosing in the chamber 7 a determined volume of fluid, then releases the orifice 13 b , allowing this volume to escape under the effect of the vapor pressure of the carrier liquid.

Lorsque l'opérateur relâche son action sur la tête, le passage ouvert sous le joint postérieur se ferme en premier lieu, restituant au récipient une étanchéité suffisante ; puis le passage antérieur s'ouvre, permettant à du liquide de pénétrer dans la chambre sous l'effet de la dépression ainsi créée.When the operator releases his action on the head, the passage open under the posterior seal closes in the first place, restoring the container sufficient tightness; then the anterior passage opens, allowing liquid to enter the chamber under the effect of the depression thus created.

La valve de la figure 2 est représentée montée et en cours de remplissage, posée sur la buse d'une pompe 14, gicleur enfoncé.The valve of FIG. 2 is shown assembled and during filling, placed on the nozzle of a pump 14, nozzle pressed in.

Pour l'essentiel, elle est semblable à la précédente : ses pièces portent donc des repères identiques.For the most part, it is similar to the previous one: its parts therefore bear identical marks.

La principale différence est que, destinée à être employée tête en bas, elle ne possède pas de tube de prise mais au moins un orifice d'admission 15 placé dans la chambre 1b du ressort au plus près de la chambre 7 du sas. D'autre part, la paroi latérale 2a de la douille employée est plus épaisse, de sorte que le volume de la chambre est plus faible, et dépourvue de bride mais prise sur toute sa hauteur et pourrait donc être en deux parties, tandis que la collerette 2d est remplacée par une simple lèvre oblique. Pour faciliter l'accès du liquide depuis les orifices 15, la portée 1a est formée d'un certain nombre de bossages 1c en appui sur le voile 2c, mais que séparent des rainures internes ; ces bossages laissent jouer le bord de la lèvre, pour que l'étanchéité soit obtenue sans serrage.The main difference is that, intended to be used upside down, it has no intake tube but at least one inlet 15 placed in the chamber 1b of the spring closest to the chamber 7 of the airlock. On the other hand, the side wall 2a of the sleeve used is thicker, so that the volume of the chamber is lower, and devoid of flange but taken over its entire height and therefore may be in two parts, while the collar 2 d is replaced by a simple oblique lip. To facilitate access to the liquid from the orifices 15, the bearing surface 1 a is formed by a number of bosses 1 c bearing on the web 2 c , but which are separated from the internal grooves; these bosses allow the lip edge to play, so that the seal is obtained without tightening.

On notera que, dans les deux cas, la paroi du carter porte sur la face externe de sa partie supérieure, renforcée, une saignée 1d qui débouche d'une part sur le côté du joint 4, par des créneaux, d'autre part sur la face supérieure du joint 8 d'assemblage sur le récipient.It will be noted that, in both cases, the wall of the casing bears on the external face of its reinforced upper part, a groove 1 d which opens on the one hand on the side of the joint 4, by slots, on the other hand on the upper face of the joint 8 for assembly on the container.

Pour le remplissage, une fois la valve adaptée, par son tube 13, sur la pompe 14, celle-ci y injecte le liquide. En règle générale la pression de pompage a alors pour effet de refouler le gicleur dans une position identique à la position de pulvérisation, permettant au liquide de pénétrer plutôt par le tube que le long du joint 4 en direction de la chambre 7 mais aussi fermant le passage le long du joint du seuil 6. La montée de la pression dans la chambre ne déforme pas notablement ce seuil car le voile porteur 2c s'appuie sur la portée 1a.For filling, once the valve has been adapted, by its tube 13, on the pump 14, the latter injects the liquid there. As a general rule, the pumping pressure then has the effect of driving the nozzle back into a position identical to the spraying position, allowing the liquid to penetrate rather by the tube than along the joint 4 in the direction of the chamber 7 but also closing the passage along the threshold seal 6. The rise in pressure in the chamber does not significantly deform this threshold because the bearing web 2 c rests on the surface 1 a .

Dans ces conditions, le liquide peut difficilement s'écouler le long de ce joint mais, déformant le joint 4, s'infiltre en direction de la saignée 1d pour repousser le joint 8 vers l'intérieur, ce qui lui permet de pénétrer rapidement, selon les flèches, dans le récipient 9.Under these conditions, the liquid can hardly flow along this seal but, deforming the seal 4, infiltrates in the direction of the groove 1 d to push the seal 8 inward, which allows it to penetrate quickly , according to the arrows, in container 9.

Lorsque le remplissage cesse, la chambre reprend son volume initial, le gicleur revenant aussi bien entendu en position de repos ; la valve est ainsi prête à fonctionner.When the filling ceases, the chamber returns to its initial volume, the nozzle also returning of course to the rest position; the valve is thus ready to operate.

Claims (5)

1. Valve doseuse comprenant un corps constitué d'un carter (1) cylindrique en matériau rigide fermé par une coupelle (3), où deux seuils à joints étanches créent un sas et à l'intérieur duquel se déplace un gicleur (11) doté d'un distributeur coulissant, guidé à ses extrémités, qu'un ressort de rappel (10) placé en amont renvoie vers la coupelle, une douille permettant de modifier le volume de la chambre (7) du sas, caractérisée en ce que douille (2) et seuil antérieur (6), rapportés, sont constitués d'une matière plastique semi-rigide, ce dernier se trouvant au voisinage immédiat d'une portée (1a) du carter apte à lui servir d'appui jusqu'au plus près du distributeur lorsque la pression du liquide s'exerce sur lui à revers, lors du remplissage, l'intrusion de ce liquide se produisant alors par une voie auxiliaire.1. Dosing valve comprising a body consisting of a cylindrical casing (1) made of rigid material closed by a cup (3), where two seals with sealed joints create an airlock and inside which moves a nozzle (11) provided a sliding distributor, guided at its ends, which a return spring (10) placed upstream returns towards the cup, a sleeve making it possible to modify the volume of the chamber (7) of the airlock, characterized in that sleeve ( 2) and anterior threshold (6), added, are made of a semi-rigid plastic material, the latter being in the immediate vicinity of a bearing surface (1 a ) of the casing capable of serving it as a support up to the most near the dispenser when the pressure of the liquid is exerted on it from the back, during filling, the intrusion of this liquid then occurring through an auxiliary channel. 2. Valve selon la revendication 1, caractérisée en ce que le seuil antérieur est fabriqué d'un seul tenant avec la douille.2. Valve according to claim 1, characterized in that the front threshold is manufactured in one piece with the sleeve. 3. Valve selon l'une des revendications 1 et 2, caractérisée en ce que le seuil antérieur forme palier de guidage pour le boisseau (12) du distributeur, qui se trouve exempt de contre-dépouilles.3. Valve according to one of claims 1 and 2, characterized in that the anterior threshold forms a guide bearing for the valve (12) of the distributor, which is free from undercuts. 4. Valve selon la revendication 3, caractérisée en ce que la portée d'appui (1a) du seuil (6) est formée de bossages (1c) séparés par des rainures.4. Valve according to claim 3, characterized in that the bearing surface (1 a ) of the threshold (6) is formed of bosses (1 c ) separated by grooves. 5. Valve selon la revendication 1, caractérisée en ce que la face externe de la paroi du carter porte une saignée (1d) qui débouche sur le côté du joint postérieur (4) pour permettre à l'intrusion de se produire à travers ce joint puis le joint d'assemblage (8).5. Valve according to claim 1, characterized in that the outer face of the wall of the housing carries a groove (1 d ) which opens on the side of the rear seal (4) to allow the intrusion to occur through this joint then the joint of assembly (8).
EP19870401747 1986-07-30 1987-07-27 Metering valve Expired - Lifetime EP0255438B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87401747T ATE63284T1 (en) 1986-07-30 1987-07-27 DOSING VALVE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8611018A FR2602298B1 (en) 1986-07-30 1986-07-30 DOSER VALVE
FR8611018 1986-07-30

Publications (2)

Publication Number Publication Date
EP0255438A1 true EP0255438A1 (en) 1988-02-03
EP0255438B1 EP0255438B1 (en) 1991-05-08

Family

ID=9337867

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870401747 Expired - Lifetime EP0255438B1 (en) 1986-07-30 1987-07-27 Metering valve

Country Status (7)

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US (2) US4842168A (en)
EP (1) EP0255438B1 (en)
AT (1) ATE63284T1 (en)
DE (1) DE3769881D1 (en)
ES (1) ES2022403B3 (en)
FR (1) FR2602298B1 (en)
GR (1) GR3002344T3 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2620052B1 (en) * 1987-09-09 1990-04-27 Valois MANUAL PUMP TYPE PREPRESSURE VAPORIZER FOR USE WITH A PROPELLANT GAS
GB9414236D0 (en) * 1994-07-14 1994-08-31 V A R I S P A Aerosol metering valves
DE19612702A1 (en) * 1996-03-29 1997-10-02 Coster Tecnologie Speciali Spa Valve for dispensing pressurized fluids
GB2322847A (en) * 1997-11-05 1998-09-09 Bespak Plc Metering valve
GB2375098B (en) * 2001-04-30 2003-08-27 Bespak Plc Improvements in valves for pressurised dispensing containers
AU2002367277A1 (en) * 2001-12-31 2003-07-24 3M Innovative Properties Company Gasket for use in a metering valve that limits seal intrusion
CA2469312A1 (en) * 2001-12-31 2003-07-31 3M Innovative Properties Company Valve stem for use in a metering valve
GB2385315B (en) * 2002-01-15 2004-06-30 Bespak Plc Improvements in or relating to valves for dispensers
US6832704B2 (en) 2002-06-17 2004-12-21 Summit Packaging Systems, Inc. Metering valve for aerosol container
US6669390B1 (en) 2002-11-22 2003-12-30 John J. Porter Breath freshener with mouthwash atomizer
US20060022013A1 (en) * 2004-07-20 2006-02-02 Paul Gaudron Gas charge setting tool
US7959041B2 (en) * 2008-08-26 2011-06-14 S. C. Johnson & Son, Inc. Valve assembly for pressurized dispensers
US20120318827A1 (en) * 2011-06-15 2012-12-20 Steven Schennum Canister

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1292114A (en) * 1961-06-14 1962-04-27 C I M A Costruzione Impianti E Push-button metering valve for the release of liquids under pressure
BE633493A (en) * 1961-10-17 1963-12-11 Scovill Manufacturing Co
FR2065176A5 (en) * 1969-10-13 1971-07-23 Neotechnic Eng Ltd
GB2087355A (en) * 1980-11-19 1982-05-26 Valvole Aerosol Res Italia Metering valve for dispensing pressurized liquids
EP0125865A2 (en) * 1983-05-06 1984-11-21 Riker Laboratories, Inc. Valve assembly for a pressurised aerosol-dispensing container

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3178078A (en) * 1961-12-29 1965-04-13 Sterling Drug Inc Metered valve construction
US3394851A (en) * 1965-09-20 1968-07-30 Sterling Drug Inc Metered aerosol valve for use with compressed gas
US4135648A (en) * 1977-10-26 1979-01-23 Summit Packaging Systems, Inc. Metering valve for pressurized dispensing containers
US4271875A (en) * 1978-09-21 1981-06-09 Philip Meshberg Dispenser adapted for fast pressure filling

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1292114A (en) * 1961-06-14 1962-04-27 C I M A Costruzione Impianti E Push-button metering valve for the release of liquids under pressure
BE633493A (en) * 1961-10-17 1963-12-11 Scovill Manufacturing Co
FR2065176A5 (en) * 1969-10-13 1971-07-23 Neotechnic Eng Ltd
GB2087355A (en) * 1980-11-19 1982-05-26 Valvole Aerosol Res Italia Metering valve for dispensing pressurized liquids
EP0125865A2 (en) * 1983-05-06 1984-11-21 Riker Laboratories, Inc. Valve assembly for a pressurised aerosol-dispensing container

Also Published As

Publication number Publication date
FR2602298A1 (en) 1988-02-05
ATE63284T1 (en) 1991-05-15
US4842168A (en) 1989-06-27
ES2022403B3 (en) 1991-12-01
GR3002344T3 (en) 1992-12-30
USRE33552E (en) 1991-03-12
FR2602298B1 (en) 1988-09-16
EP0255438B1 (en) 1991-05-08
DE3769881D1 (en) 1991-06-13

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