FR3123231A1 - DISTRIBUTION VALVE FOR A LIQUID OR PASTY PRODUCT - Google Patents
DISTRIBUTION VALVE FOR A LIQUID OR PASTY PRODUCT Download PDFInfo
- Publication number
- FR3123231A1 FR3123231A1 FR2105644A FR2105644A FR3123231A1 FR 3123231 A1 FR3123231 A1 FR 3123231A1 FR 2105644 A FR2105644 A FR 2105644A FR 2105644 A FR2105644 A FR 2105644A FR 3123231 A1 FR3123231 A1 FR 3123231A1
- Authority
- FR
- France
- Prior art keywords
- valve
- annular
- axial
- downstream
- cavity
- 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
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 7
- 230000000717 retained effect Effects 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 6
- 235000011837 pasties Nutrition 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 25
- 238000011144 upstream manufacturing Methods 0.000 claims description 16
- 230000000295 complement effect Effects 0.000 claims description 10
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 229920001169 thermoplastic Polymers 0.000 claims description 2
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 239000006071 cream Substances 0.000 description 4
- 230000037452 priming Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 229940127557 pharmaceutical product Drugs 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/0005—Components or details
- B05B11/0008—Sealing or attachment arrangements between sprayer and container
- B05B11/0013—Attachment arrangements comprising means cooperating with the inner surface of the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/0005—Components or details
- B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
- B05B11/007—Outlet valves actuated by the pressure of the fluid to be sprayed being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/0005—Components or details
- B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
- B05B11/0072—A valve member forming part of an outlet opening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1028—Pumps having a pumping chamber with a deformable wall
- B05B11/1035—Pumps having a pumping chamber with a deformable wall the pumping chamber being a bellow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/1066—Pump inlet valves
- B05B11/1067—Pump inlet valves actuated by pressure
- B05B11/1069—Pump inlet valves actuated by pressure the valve being made of a resiliently deformable material or being urged in a closed position by a spring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/1073—Springs
- B05B11/1077—Springs characterised by a particular shape or material
-
- 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
- B65D47/00—Closures with filling and discharging, or with discharging, devices
- B65D47/04—Closures with discharging devices other than pumps
- B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
- B65D47/24—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat
- B65D47/241—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat the valve being opened or closed by actuating a cap-like element
- B65D47/243—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat the valve being opened or closed by actuating a cap-like element moving linearly, i.e. without rotational motion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
- F16K15/145—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery the closure elements being shaped as a solids of revolution, e.g. cylindrical or conical
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K25/00—Details relating to contact between valve members and seat
- F16K25/005—Particular materials for seats or closure elements
Abstract
Valve (20) de distribution d’un produit liquide ou pâteux comportant un embout rigide (22), une tige centrale (26) logée dans l’embout, et un clapet (32) annulaire d’obturation qui est réalisé en une seule pièce en matériau déformable élastiquement, qui est monté sur la tige centrale (26) par emboîtement élastique et qui est retenu axialement par rapport à cette tige centrale (26). Figure pour l'abrégé : 4Valve (20) for dispensing a liquid or pasty product comprising a rigid endpiece (22), a central rod (26) housed in the endpiece, and an annular shutter valve (32) which is made in a single piece made of elastically deformable material, which is mounted on the central rod (26) by elastic interlocking and which is retained axially with respect to this central rod (26). Figure for abstract: 4
Description
Domaine technique de l’inventionTechnical field of the invention
La présente invention concerne une valve de distribution d’un produit.The present invention relates to a valve for dispensing a product.
Il peut s'agir de produits pharmaceutiques ou de produits cosmétiques tels que des crèmes de soins, de consistance fluide, c'est-à-dire des produits liquides ou pâteux.They may be pharmaceutical products or cosmetic products such as care creams, of fluid consistency, that is to say liquid or pasty products.
L’invention concerne notamment une valve d'un système de distribution sans air aussi appelé "airless", c'est-à-dire sans reprise d'air, assemblé sur un conteneur dans lequel est conditionné un produit liquide ou pâteux à distribuer.The invention relates in particular to a valve of an airless dispensing system also called "airless", that is to say without air intake, assembled on a container in which is packaged a liquid or pasty product to be dispensed.
Arrière-plan techniqueTechnical background
Dans un système ou dispositif de distribution sans air, le produit fluide est conditionné dans un conteneur dont, à tout moment de l'utilisation, le volume correspond précisément à la quantité résiduelle du produit qu'il contient.In an airless dispensing system or device, the fluid product is packaged in a container whose volume, at any time of use, corresponds precisely to the residual quantity of the product that it contains.
Avant sa distribution, le produit n'est jamais en contact avec l'air à l'intérieur du conteneur.Before its distribution, the product is never in contact with the air inside the container.
Un dispositif de distribution sans air est constitué d’une pompe montée sur un conteneur à volume rétractable, l’actionnement de la pompe par l’utilisateur provoquant le prélèvement d’une dose de produit, notamment d’une crème, dans le conteneur et la distribution de la dose de crème via un orifice de sortie qui peut être équipé d’une valve d’obturation.An airless dispensing device consists of a pump mounted on a container with a retractable volume, the actuation of the pump by the user causing the removal of a dose of product, in particular of a cream, from the container and dispensing the dose of cream via an outlet orifice which can be equipped with a shut-off valve.
Le dosage précis de la quantité de produit distribué lors de chaque utilisation est assuré au moyen de la pompe intégrée dans le système.The precise dosage of the quantity of product dispensed during each use is ensured by means of the pump integrated into the system.
Le document WO-A1-2017051127 décrit et représente une valve de distribution d’un produit liquide ou pâteux qui s’étend axialement selon le sens d’écoulement d’amont vers l’aval du produit dans un au moins un canal reliant une portion amont de la valve à un orifice aval de sortie du produit, la valve comportant :The document WO-A1-2017051127 describes and represents a valve for dispensing a liquid or pasty product which extends axially in the direction of flow from upstream to downstream of the product in at least one channel connecting a portion upstream of the valve to a downstream product outlet orifice, the valve comprising:
- une tige centrale qui s’étend axialement et qui comporte un siège de valve avec une surface d’étanchéité et ;
- un clapet annulaire d’obturation de l’orifice aval de sortie qui est réalisé en une seule pièce en matériau déformable élastiquement et qui comporte :
(i) un corps tubulaire de clapet qui entoure la tige centrale ;
(ii) une tête annulaire de clapet qui est percée en son centre pour former l’orifice aval de sortie de la valve et qui comporte une surface interne d’étanchéité qui est montée mobile entre :
* une position fermée vers laquelle elle est rappelée élastiquement et dans laquelle sa surface interne d’étanchéité coopère avec la surface d’étanchéité du siège de valve contre laquelle elle est maintenue en appui élastique étanche à l’air ;
* et une position ouverte dans laquelle les deux surfaces d’étanchéité sont espacées l’une de l’autre pour ouvrir un passage d’accès à l’orifice aval de sortie,
et dans laquelle la tête annulaire de clapet est rappelée élastiquement vers sa position fermée.- a central stem which extends axially and which comprises a valve seat with a sealing surface and;
- an annular shutter valve for the downstream outlet orifice which is made in a single piece of elastically deformable material and which comprises:
(i) a tubular valve body that surrounds the central stem;
(ii) an annular valve head which is pierced in its center to form the downstream outlet orifice of the valve and which comprises an internal sealing surface which is mounted movable between:
* a closed position towards which it is elastically biased and in which its internal sealing surface cooperates with the sealing surface of the valve seat against which it is held in elastic support airtight;
* and an open position in which the two sealing surfaces are spaced apart to open an access passage to the downstream outlet orifice,
and in which the annular valve head is elastically biased towards its closed position.
Cette conception présente l’avantage d’une grande simplicité de mise en œuvre au regard des dispositifs antérieurs complexes. Cette conception répond aussi de manière adéquate aux exigences nouvelles en matière de recyclage après utilisation, tandis que les valves barrières à l’air de l’art antérieur combinaient le plus souvent métal et plastique dans leur conception en interdisant ainsi de pouvoir les recycler.This design has the advantage of a great simplicity of implementation with regard to the complex previous devices. This design also responds adequately to the new requirements in terms of recycling after use, while the air barrier valves of the prior art most often combined metal and plastic in their design, thus preventing them from being able to be recycled.
Une telle valve doit satisfaire aux exigences d’étanchéité et de stabilité requises lorsque le seuil de déclenchement du clapet de la valve est très bas.Such a valve must meet the tightness and stability requirements required when the triggering threshold of the valve flap is very low.
Lorsqu’une telle valve de distribution est utilisée pour obturer l’orifice de sortie d’un dispositif de distribution qui permet de distribuer des doses de très petit volume, il est impératif que le seuil de déclenchement de la valve de distribution soit très bas pour permettre l’amorçage du dispositif de distribution.When such a dispensing valve is used to close the outlet orifice of a dispensing device which makes it possible to dispense doses of very small volume, it is imperative that the triggering threshold of the dispensing valve be very low to allow priming of the dispensing device.
En effet, lorsque le volume unitaire à doser et à distribuer est très faible, par exemple de l’ordre de 0,15 ml, la variation de pression induite dans le dispositif lors de la phase d’amorçage peut être insuffisante pour produire la force nécessaire au déclenchement du clapet de la valve d’obturation.Indeed, when the unit volume to be dosed and dispensed is very low, for example of the order of 0.15 ml, the pressure variation induced in the device during the priming phase may be insufficient to produce the force required to trigger the shut-off valve flap.
Dans un tel cas, le dispositif de distribution ne peut pas être amorcé. En effet, le dispositif constitue alors un volume fermé dans lequel l’air se comprime et se détend successivement sans s’évacuer lorsqu’on actionne la pompe, et sans transfert associé de la crème du conteneur vers la pompe.In such a case, the dispensing device cannot be primed. Indeed, the device then constitutes a closed volume in which the air successively compresses and expands without being evacuated when the pump is activated, and without any associated transfer of the cream from the container to the pump.
A titre d’exemple, pour permettre l’amorçage du dispositif de distribution, le seuil de déclenchement de la valve de distribution doit être inférieur à 200 millibars lorsque le volume unitaire à doser, et donc la variation de volume dans le corps de pompe, est égal à 0,15 ml.For example, to allow priming of the dispensing device, the triggering threshold of the dispensing valve must be less than 200 millibars when the unit volume to be dosed, and therefore the volume variation in the pump body, is equal to 0.15 ml.
Lorsque le clapet de la valve de distribution est constitué d’une paroi souple en appui sur une paroi rigide, la contrainte liée au seuil de déclenchement entre en conflit avec la contrainte liée à l’étanchéité de la valve de distribution.When the distribution valve poppet consists of a flexible wall resting on a rigid wall, the stress related to the trigger threshold conflicts with the stress related to the tightness of the distribution valve.
En effet, l’appui élastique de la paroi souple du clapet sur la paroi rigide de la tige centrale de la valve de distribution pour permettre le déclenchement du dispositif peut être trop faible pour garantir le contact de la paroi souple sur la paroi rigide de la tige sur la totalité du périmètre de l’orifice de sortie. Pour garantir ce contact, le clapet doit être positionné avec une précision extrême sur la tige d’appui dans l’axe longitudinal de la tige.Indeed, the elastic support of the flexible wall of the valve on the rigid wall of the central stem of the dispensing valve to allow the triggering of the device may be too weak to guarantee the contact of the flexible wall on the rigid wall of the valve. rod around the entire perimeter of the exit hole. To guarantee this contact, the plug must be positioned with extreme precision on the support rod in the longitudinal axis of the rod.
Dans le document WO-A1-2017051127, la valve d’obturation ne garantit pas suffisamment la précision du positionnement axial du clapet d’obturation par rapport à la tige centrale lorsque le seuil de déclenchement du clapet est très bas.In document WO-A1-2017051127, the shutter valve does not sufficiently guarantee the precision of the axial positioning of the shutter valve relative to the central rod when the valve trigger threshold is very low.
L’agencement pour l’immobilisation axiale du corps tubulaire du clapet y est réalisé obligatoirement par contre dépouille dans la cavité de l’embout et il ne permet pas de garantir la stabilité de ce positionnement axial lors de l’utilisation de la pompe, par exemple lorsque l’utilisateur enfonce brutalement le bouton poussoir.The arrangement for the axial immobilization of the tubular body of the valve is necessarily made there by undercut in the cavity of the end piece and it does not make it possible to guarantee the stability of this axial positioning when using the pump, for example when the user suddenly presses the push button.
Ainsi, un déplacement d’un dixième de millimètre de la position axiale du clapet d’obturation par rapport à la tige centrale peut provoquer une perte d’étanchéité de la valve de distribution en position de repos.Thus, a displacement of a tenth of a millimeter of the axial position of the shutter valve relative to the central rod can cause a loss of tightness of the dispensing valve in the rest position.
L’invention propose une valve de distribution d’un produit liquide ou pâteux qui s’étend axialement selon le sens d’écoulement d’amont vers l’aval du produit dans au moins un canal reliant une portion amont de la valve à un orifice aval de sortie du produit, la valve comportant :
a) - un embout rigide qui comporte une cavité axiale qui débouche à une extrémité aval de l’embout rigide ;
b) - une tige centrale qui :
-- s’étend axialement ;
-- est logée dans la cavité axiale de l’embout rigide ;
-- est fixée sur l’embout rigide par emmanchement axial dans ladite cavité axiale ;
-- et comporte un siège de valve avec une surface d’étanchéité ;
c) - et un clapet annulaire d’obturation de l’orifice aval de sortie qui est réalisé en une seule pièce en matériau déformable élastiquement et qui comporte :
- c1) un corps tubulaire de clapet qui entoure la tige centrale ;
- c2) une tête annulaire de clapet qui est percée en son centre pour former l’orifice aval de sortie de la valve et qui comporte une surface d’étanchéité qui est montée mobile entre :
* une position fermée vers laquelle elle est rappelée élastiquement et dans laquelle sa surface d’étanchéité coopère avec la surface d’étanchéité du siège de valve contre laquelle elle est maintenue en appui élastique étanche à l’air ;
* et une position ouverte dans laquelle lesdites deux surfaces d’étanchéité sont espacées l’une de l’autre pour ouvrir un passage d’accès à l’orifice aval de sortie ;
- c3) une portion annulaire intermédiaire qui relie la tête annulaire de clapet au corps tubulaire de clapet, qui s’étend selon une extension radiale entre la tête annulaire de clapet et le corps tubulaire de clapet, qui est déformable élastiquement, et qui applique à la tête annulaire de clapet un effort de rappel élastique vers sa position fermée,
et dans laquelle :
- le clapet annulaire d’obturation est monté et est retenu axialement selon la direction axiale sur la tige centrale par emboîtement élastique du corps tubulaire de clapet sur la tige centrale ;
- la tête annulaire de clapet est délimitée axialement par une face amont ;
- le clapet annulaire d’obturation est délimité par une face aval ;
- la plus grande épaisseur axiale de la tête annulaire de clapet correspond à la distance axiale maximale séparant ladite face amont de ladite face aval;
- la portion annulaire intermédiaire est une portion dont l’épaisseur axiale est inférieure à ladite plus grande épaisseur axiale de la tête annulaire de clapet.The invention proposes a valve for dispensing a liquid or pasty product which extends axially according to the direction of flow from upstream to downstream of the product in at least one channel connecting an upstream portion of the valve to an orifice downstream of the product outlet, the valve comprising:
a) - a rigid endpiece which comprises an axial cavity which opens out at a downstream end of the rigid endpiece;
b) - a central rod which:
-- extends axially;
-- Is housed in the axial cavity of the rigid end piece;
-- Is fixed to the rigid end piece by axial fitting in said axial cavity;
-- and comprises a valve seat with a sealing surface;
c) - and an annular shutter valve for the downstream outlet orifice which is made in a single piece of elastically deformable material and which comprises:
- c1) a tubular valve body which surrounds the central rod;
- c2) an annular valve head which is pierced in its center to form the downstream outlet orifice of the valve and which comprises a sealing surface which is movably mounted between:
* a closed position towards which it is elastically biased and in which its sealing surface cooperates with the sealing surface of the valve seat against which it is held in elastic support airtight;
* and an open position in which said two sealing surfaces are spaced from each other to open an access passage to the downstream outlet port;
- c3) an intermediate annular portion which connects the annular valve head to the tubular valve body, which extends along a radial extension between the annular valve head and the tubular valve body, which is elastically deformable, and which applies to the annular valve head an elastic return force towards its closed position,
and in which:
- the annular closure valve is mounted and is retained axially in the axial direction on the central rod by elastic fitting of the tubular valve body on the central rod;
- the annular valve head is delimited axially by an upstream face;
- the annular shutter valve is delimited by a downstream face;
- the greatest axial thickness of the annular valve head corresponds to the maximum axial distance separating said upstream face from said downstream face;
- the intermediate annular portion is a portion whose axial thickness is less than said greatest axial thickness of the annular valve head.
Selon d’autres caractéristiques de l’invention :
- ladite face aval du clapet annulaire d’obturation est sensiblement plane ou est sensiblement en forme d’un tronc de sphère convexe ;
- la plus grande épaisseur axiale de la tête annulaire de clapet est supérieure de plus de cinquante pourcent à l’épaisseur de ladite portion annulaire intermédiaire ;
- - la surface d’étanchéité du siège de valve est une surface tronconique axiale convexe d’étanchéité, et la surface d’étanchéité de la tête annulaire de clapet est une surface tronconique axiale concave d’étanchéité qui est complémentaire de la surface tronconique axiale convexe d’étanchéité du siège de valve ;
- le corps tubulaire de clapet est retenu axialement par rapport à la tige centrale par une paire de surfaces annulaires opposées de butée dont l’une orientée vers l’aval est formée dans le clapet annulaire d’obturation et dont l’autre orientée vers l’amont est formée sur la tige centrale ;
- la tige centrale comporte une nervure annulaire radiale en saillie qui est logée dans une gorge radiale complémentaire du clapet annulaire d’obturation, la surface de butée est formée sur ladite nervure, et l’autre surface de butée appartient à ladite gorge ;
- les deux surfaces annulaires opposées de butée sont en appui élastique l’une contre l’autre ;
- une extrémité amont de la tige centrale est en appui axial contre une portion en vis-à-vis d’un fond de la cavité, et une nervure annulaire radiale en saillie de la tige centrale est fixée par emboîtement élastique et est retenue axialement dans une gorge complémentaire de la cavité ;
- la nervure annulaire radiale en saillie coopère de manière étanche avec la gorge radiale complémentaire de la cavité ;
- une face latérale extérieure convexe du corps tubulaire de clapet coopère de manière étanche avec une portion interne complémentaire concave de la paroi latérale interne de la cavité ;
- ledit au moins un canal s’étend dans la tige centrale depuis la portion amont de la valve jusqu’à l’orifice aval de sortie du produit ;
- le clapet annulaire d’obturation est réalisé en une seule pièce dans un matériau, élastomère thermoplastique ou vulcanisable, dont la dureté Shore A est inférieure ou égale à 70, de préférence inférieure ou égale à 50.According to other characteristics of the invention:
- Said downstream face of the annular shutter valve is substantially planar or is substantially in the shape of a truncated convex sphere;
- the greatest axial thickness of the annular valve head is more than fifty percent greater than the thickness of said intermediate annular portion;
- - the sealing surface of the valve seat is a convex axial tapered sealing surface, and the sealing surface of the annular valve head is a concave axial tapered sealing surface which is complementary to the axial tapered surface convex valve seat sealing;
- the tubular valve body is retained axially with respect to the central stem by a pair of opposed annular abutment surfaces, one of which is oriented downstream and is formed in the annular shutter valve and the other of which is oriented towards the upstream is formed on the central rod;
- the central rod comprises a projecting radial annular rib which is housed in a complementary radial groove of the annular shutter valve, the abutment surface is formed on said rib, and the other abutment surface belongs to said groove;
- the two opposite annular abutment surfaces are in elastic support against each other;
- an upstream end of the central rod bears axially against a portion facing a bottom of the cavity, and a radial annular rib projecting from the central rod is fixed by elastic fitting and is retained axially in a groove complementary to the cavity;
- The projecting radial annular rib cooperates in a leaktight manner with the complementary radial groove of the cavity;
- A convex outer side face of the tubular valve body cooperates in a sealed manner with a complementary concave inner portion of the inner side wall of the cavity;
- Said at least one channel extends in the central stem from the upstream portion of the valve to the downstream product outlet orifice;
- the annular closure valve is made in one piece from a material, thermoplastic or vulcanizable elastomer, whose Shore A hardness is less than or equal to 70, preferably less than or equal to 50.
Brève descriptions des figuresBrief descriptions of figures
D'autres caractéristiques et avantages de l'invention apparaitront au cours de la lecture de la description détaillée qui va suivre pour la compréhension de laquelle on se reportera aux dessins annexés dans lesquels :Other characteristics and advantages of the invention will appear during the reading of the detailed description which will follow for the understanding of which reference will be made to the appended drawings in which:
Claims (12)
a) - un embout rigide (22) qui comporte une cavité axiale (24) qui débouche à une extrémité aval de l’embout rigide (22) ;
b) - une tige centrale (26) qui :
-- s’étend axialement (X) ;
-- est logée dans la cavité axiale (22) de l’embout rigide (22) ;
-- est fixée sur l’embout rigide (22) par emmanchement axial dans ladite cavité axiale ;
-- et comporte un siège de valve (30) avec une surface (31) d’étanchéité ;
c) - et un clapet (32) annulaire d’obturation de l’orifice aval de sortie qui est réalisé en une seule pièce en matériau déformable élastiquement et qui comporte :
- c1) un corps tubulaire (34) de clapet qui entoure la tige centrale (26) ;
- c2) une tête (36) annulaire de clapet qui est percée en son centre pour former l’orifice aval de sortie de la valve et qui comporte une surface (37) d’étanchéité qui est montée mobile entre :
* une position fermée vers laquelle elle est rappelée élastiquement et dans laquelle sa surface (37) d’étanchéité coopère avec la surface (31) d’étanchéité du siège (30) de valve contre laquelle elle est maintenue en appui élastique étanche à l’air ;
* et une position ouverte dans laquelle lesdites deux surfaces d’étanchéité (31, 37) sont espacées l’une de l’autre pour ouvrir un passage d’accès à l’orifice aval de sortie ;
- c3) une portion annulaire (38) intermédiaire qui relie la tête (36) annulaire de clapet au corps tubulaire (34) de clapet, qui s’étend selon une extension radiale (L38) entre la tête (36) annulaire de clapet et le corps tubulaire (34) de clapet, qui est déformable élastiquement, et qui applique à la tête annulaire (36) de clapet un effort de rappel élastique vers sa position fermée,
et dans laquelle :
- le clapet (32) annulaire d’obturation est monté et est retenu axialement selon la direction axiale (X) sur la tige centrale (26) par emboîtement élastique du corps tubulaire (34) de clapet sur la tige centrale (26) ;
- la tête (36) annulaire de clapet est délimitée axialement par une face amont (52) ;
- le clapet (32) annulaire d’obturation est délimité par une face aval (39) ;
- la plus grande épaisseur axiale (e36) de la tête (36) annulaire de clapet correspond à la distance axiale maximale séparant ladite face amont (52) de ladite face aval (39);
- la portion annulaire intermédiaire (38) est une portion dont l’épaisseur axiale (e38) est inférieure à ladite plus grande épaisseur axiale (e36) de la tête (36) annulaire de clapet.Valve (20) for dispensing a liquid or pasty product which extends axially (X) in the direction of flow from upstream to downstream of the product in at least one channel (44) connecting an upstream portion of the valve (20) to a downstream product outlet orifice, the valve comprising:
a) - a rigid end piece (22) which has an axial cavity (24) which opens out at a downstream end of the rigid end piece (22);
b) - a central rod (26) which:
-- extends axially (X);
-- Is housed in the axial cavity (22) of the rigid endpiece (22);
-- Is fixed to the rigid endpiece (22) by axial fitting in said axial cavity;
-- and comprises a valve seat (30) with a sealing surface (31);
c) - and an annular valve (32) for closing the downstream outlet orifice which is made in a single piece of elastically deformable material and which comprises:
- c1) a tubular valve body (34) which surrounds the central stem (26);
- c2) an annular valve head (36) which is pierced in its center to form the downstream outlet orifice of the valve and which comprises a sealing surface (37) which is movably mounted between:
* a closed position towards which it is elastically biased and in which its sealing surface (37) cooperates with the sealing surface (31) of the valve seat (30) against which it is held in elastic support sealed against the air ;
* and an open position in which said two sealing surfaces (31, 37) are spaced from each other to open an access passage to the downstream outlet port;
- c3) an intermediate annular portion (38) which connects the annular valve head (36) to the tubular valve body (34), which extends along a radial extension (L38) between the annular valve head (36) and the tubular valve body (34), which is elastically deformable, and which applies to the annular valve head (36) an elastic return force towards its closed position,
and in which:
- the valve (32) annular closure is mounted and is retained axially in the axial direction (X) on the central rod (26) by elastic fitting of the tubular body (34) of the valve on the central rod (26);
- the annular valve head (36) is delimited axially by an upstream face (52);
- The valve (32) annular closure is delimited by a downstream face (39);
- the greatest axial thickness (e36) of the annular valve head (36) corresponds to the maximum axial distance separating said upstream face (52) from said downstream face (39);
- the intermediate annular portion (38) is a portion whose axial thickness (e38) is less than said greatest axial thickness (e36) of the annular valve head (36).
- la surface d’étanchéité du siège (30) de valve est une surface tronconique axiale convexe (31) d’étanchéité ;
- la surface d’étanchéité (37) de la tête annulaire (36) de clapet est une surface tronconique axiale concave (37) d’étanchéité qui est complémentaire de la surface tronconique axiale convexe (31) d’étanchéité du siège (30) de valve.Valve (20) according to Claim 1, characterized in that:
- The sealing surface of the valve seat (30) is a convex axial frustoconical surface (31) for sealing;
- the sealing surface (37) of the annular valve head (36) is a concave axial frustoconical surface (37) for sealing which is complementary to the convex axial frustoconical surface (31) for sealing the seat (30) valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2105644A FR3123231B1 (en) | 2021-05-31 | 2021-05-31 | VALVE FOR DISTRIBUTING A LIQUID OR PASTY PRODUCT |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2105644 | 2021-05-31 | ||
| FR2105644A FR3123231B1 (en) | 2021-05-31 | 2021-05-31 | VALVE FOR DISTRIBUTING A LIQUID OR PASTY PRODUCT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR3123231A1 true FR3123231A1 (en) | 2022-12-02 |
| FR3123231B1 FR3123231B1 (en) | 2023-09-08 |
Family
ID=76375338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR2105644A Active FR3123231B1 (en) | 2021-05-31 | 2021-05-31 | VALVE FOR DISTRIBUTING A LIQUID OR PASTY PRODUCT |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR3123231B1 (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0700353A1 (en) * | 1993-06-04 | 1996-03-13 | Billy Nilson | A self-closing arrangement |
| WO1997047531A1 (en) * | 1996-06-13 | 1997-12-18 | Gabriel Bouzaglo | Container stopper with shut-off valve |
| FR2785222A1 (en) * | 1998-11-02 | 2000-05-05 | Valois Sa | METHOD FOR MANUFACTURING A SHUTTER, PUSH-BUTTON AND DISPENSING HEAD INCORPORATING SUCH A SHUTTER |
| JP2002002755A (en) * | 2000-06-22 | 2002-01-09 | Kitano Seisaku Kk | Back flow preventing container |
| US20120305566A1 (en) * | 2010-02-24 | 2012-12-06 | Gaplast Gmbh | Packaging |
| WO2017051127A1 (en) | 2015-09-22 | 2017-03-30 | Cep Tubes | Valve for an end piece having a shut-off means |
| US20170234446A1 (en) * | 2014-04-04 | 2017-08-17 | Is/\Mi Vision Inc. | Valve closures |
| EP3772470A1 (en) * | 2019-08-09 | 2021-02-10 | Techniplast | Device for dispensing a liquid product with improved performance |
-
2021
- 2021-05-31 FR FR2105644A patent/FR3123231B1/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0700353A1 (en) * | 1993-06-04 | 1996-03-13 | Billy Nilson | A self-closing arrangement |
| WO1997047531A1 (en) * | 1996-06-13 | 1997-12-18 | Gabriel Bouzaglo | Container stopper with shut-off valve |
| FR2785222A1 (en) * | 1998-11-02 | 2000-05-05 | Valois Sa | METHOD FOR MANUFACTURING A SHUTTER, PUSH-BUTTON AND DISPENSING HEAD INCORPORATING SUCH A SHUTTER |
| JP2002002755A (en) * | 2000-06-22 | 2002-01-09 | Kitano Seisaku Kk | Back flow preventing container |
| US20120305566A1 (en) * | 2010-02-24 | 2012-12-06 | Gaplast Gmbh | Packaging |
| US20170234446A1 (en) * | 2014-04-04 | 2017-08-17 | Is/\Mi Vision Inc. | Valve closures |
| WO2017051127A1 (en) | 2015-09-22 | 2017-03-30 | Cep Tubes | Valve for an end piece having a shut-off means |
| EP3772470A1 (en) * | 2019-08-09 | 2021-02-10 | Techniplast | Device for dispensing a liquid product with improved performance |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3123231B1 (en) | 2023-09-08 |
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