EP3668802A1 - Soupapes pour matériaux solides pour récipients sous pression - Google Patents

Soupapes pour matériaux solides pour récipients sous pression

Info

Publication number
EP3668802A1
EP3668802A1 EP18765560.0A EP18765560A EP3668802A1 EP 3668802 A1 EP3668802 A1 EP 3668802A1 EP 18765560 A EP18765560 A EP 18765560A EP 3668802 A1 EP3668802 A1 EP 3668802A1
Authority
EP
European Patent Office
Prior art keywords
star
valve body
valve
circumferential
solid
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
EP18765560.0A
Other languages
German (de)
English (en)
Other versions
EP3668802B1 (fr
Inventor
Mihály RIDEG
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.)
FAZEKAS, GABOR
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to PL18765560T priority Critical patent/PL3668802T3/pl
Publication of EP3668802A1 publication Critical patent/EP3668802A1/fr
Application granted granted Critical
Publication of EP3668802B1 publication Critical patent/EP3668802B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
    • B65D83/38—Details of the container body
    • 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 for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
    • B65D83/44—Valves specially adapted for the discharge of contents; Regulating devices
    • B65D83/48—Lift valves, e.g. operated by push action

Definitions

  • the invention relates to a solid valve for pressure cans, in particular for the application of mounting foams, with a valve plate, a valve body arranged in the valve body, mounted in a central recess of the valve body Stem with at least one releasable by actuation of the star inlet opening for the Pressure-dose content, at least one outlet opening, a channel connecting the inlet opening with the outlet opening, at least one acting between the valve body and the stem sealing element, and a spring element.
  • Solid valves can be used in particular for the application of assembly and sealing foams from aerosol cans, but are basically suitable for all forms of aerosol cans from which materials are applied with a solids content, for example, for the application of paint, adhesive, sealants and cleaning agents.
  • Mounting foams in particular polyurethane foams, have found a wide field of application in the art. In the construction sector, they are used to fasten elements such as window frames, door frames and other prefabricated parts, to close openings and to fill cavities and pockets. They are often used for thermal and acoustic insulation. Furthermore, they are suitable in cavities filled with them to avoid the formation of condensation with subsequent corrosion.
  • prepolymers are used, which often harden by the action of moisture, in particular humidity. After release of the mixture of blowing agent and foaming agent, a reaction takes place between the prepolymer and the air humidity contained in the air. This leads to the formation of a permanent foam. Depending on the moisture content of the air curing takes place in more or less short time. At high humidity curing only takes a few minutes.
  • Two-component foams additionally contain a separate crosslinker component in the pressure cell.
  • valves that release by tilting or pushing the path of the foam.
  • they must ensure a secure seal during transport and storage. If the seal is insufficient, moisture will diffuse into the valve mechanism which causes the prepolymers to harden in the valve, which interferes with its proper functioning. In extreme cases, the valve is completely blocked by polymer formed therein.
  • Disc valves are known in which the valve closure element is connected via a coil spring with a holding part as an abutment. The holding part protrudes freely into the inner part of the pressure vessel. The spring is inserted between the holding part and valve closure element and ensures its tight fit on the valve disk.
  • a problem with the use of coil springs is that they can be impaired or blocked by deposits in their function.
  • Another problem of conventional poppet valves is the sealing in the area of the star. The star is movably disposed within the valve body, the tightness is mostly caused by sealing lips. Again, it can lead to deposits that affect the proper sealing function.
  • the object of the invention is therefore to provide a valve which avoids the disadvantages of conventional valves described above. It is intended to protect against the ingress of moisture into the valve area located in the pressure vessel. At the same time, however, application aids such as spray guns must be able to be connected. It should be simple and ensure high reliability. In particular, such a valve should also have a less prone spring mechanism.
  • the invention proposes, starting from a valve of the type mentioned above, the star in two parts, the upper part having at least one outlet opening and is integrally connected via a circumferential elastic membrane with the valve body and the lower part of the at least one Having inlet opening, wherein the lower and upper part of the star are positively and / or non-positively connected to each other.
  • can side and "valve side” as used in the specification and claims, in an orientation along the central axis of a can, denote the can end of a part (on the can side) and the can out of the can Direction of the valve end of a part (valve side).
  • the solid valve according to the invention for pressure cans has a conventional valve plate, which has a circular central recess.
  • the valve plate usually has a between the recess and the outer edge trough-shaped profile with a raised inner edge on which the valve body is fixed.
  • valve body itself may be molded onto the valve disk in a manner known per se, i. the raised inner edge of the valve disk is located inside the valve body.
  • valve body is adapted to the shape of the valve disk, having a rising edge which engages with an outwardly facing projection on the inner edge of the valve disk.
  • the valve body is pressed into the valve disk from the bottom.
  • the valve body has an outwardly facing region, which receives the can-side contour of the valve disk and closely conforms to it.
  • the outwardly facing and over the inner edge of the valve plate cross-projection secures the valve body on the valve plate.
  • the internal pressure of the pressure cell ensures a high contact pressure and tightness in this area.
  • valve body in the contact area may be equipped with the valve disk with concentrically encircling sealing lips, which bring about an additional sealing.
  • the valve body has a central recess in which the star of the valve is mounted vertically movable.
  • the star On the can side, the star has at least one inlet opening for the can contents, on the valve side at least one outlet opening through which the can contents can emerge after actuation of the valve.
  • the star is divided into an upper and a lower part. Both parts are positively and / or non-positively connected.
  • the lower, can-side part of the star has the inlet opening, the upper, Valve-side part of the outlet opening, wherein the openings are connected by a channel.
  • the upper part of the stem is integrally connected to the valve body via a membrane.
  • Integrally connected means that the valve body and the upper part of the stem are integrally formed, wherein a concentric membrane produces the connection between the two parts.
  • Such a construction is easily produced by injection molding. This ensures that the located between the valve body and star narrow gap, which ensures the mobility of the Stems, is closed on the valve side; An outlet of can contents with open or closed valve is not possible in this way.
  • the elastic membrane extends along the valve side edge of the lower part of the stem.
  • the membrane may be formed stepwise, i. be designed in waves. This creates an area reserve that allows the movement of the stem without causing excessive stress on the membrane.
  • Between the upper edge of the valve body and the elastic membrane runs a concentric circumferential recess, which contributes to the elasticity and area reserve of the membrane. In addition, this prevents the movement of the stem from directly transferring to the upper edge of the valve body, which is important for the determination and sealing of the valve body. Geometry and thickness of the membrane cause the elasticity.
  • the star When the valve is actuated, the star is pushed in vertically to apply the contents of the can - usually via a dispensing aid or a spray gun - with the star moving along the membrane during its downward movement. This leads to a change in the contour, which exerts a certain tension and is absorbed by the elasticity. If the diaphragm is stepped, this movement and tension is absorbed in the area of the steps.
  • the two parts of the star are positively and / or non-positively connected. This means that they function in unity and are firmly connected. The two parts have centrally a channel for applying the contents of the can.
  • the channel of the lower part of the star in the valve-side region has a central receptacle into which the can-side end of the upper part of the star is fitted.
  • a circumferential extension can be arranged in the region of the receptacle of the lower part, in which an outer circumferential bead of the upper part engages positively.
  • a sealing element Between the valve body and the lower part of the star is a sealing element.
  • this is a doseside on the valve body circumferential sealing lip, which cooperates with a circumferential projection of the lower part of the star. When the valve is closed, this sealing lip reliably closes against the projection, but releases a passage for the contents of the can as soon as the star is triggered downwards.
  • the solids valve according to the invention needs a spring element for a perfect closing function.
  • the valve body preferably on the can side an extension which surrounds the lower part of the star and serves as a holding element for the spring element.
  • This extension which concentrically surrounds the lower part of the star, also increases the stability and rigidity of the valve body.
  • the spring element may consist of a conventional coil spring, which is mounted in a spring cage, which in turn is arranged on the extension of the valve body.
  • the spring element is a spring clip, which is fixed by holding arms on the valve body. These support arms engage in recesses of the extension of the valve body, either by curved in the direction of the valve body ends of the arms or through notched retaining tongues, which engage in the recesses and at the same time exert a spring action in addition to the Sperr-.
  • the spring clip itself is preferably arched in the direction of the valve and has centrally in the region of the concavity on a dent or recess into which engages a projection of the lower part of the stem. This measure serves to center the stem, which is held in this way in the middle of the interior of the valve body.
  • the upper part of the stem has a sealing collar made of an elastic material, for example a thermoplastic elastomer, suitable for making the sealing seat a VerDumpistole.
  • This sealing spout is valve-side limited by a fixing ring, which in contrast is made of a hard material, such as a polyoxymethylene, and serves as an abutment of the trigger of the VerDumpistole.
  • fixing ring and sealing sleeve are positively connected to each other, for example, such that the fixing ring on the can side has a circumferential groove into which engages a circumferential projection of the sealing sleeve.
  • fixing ring and / or sealing collar are fitted in a recess in the upper part of the stem, so that there is a firm connection.
  • the fixing ring can be fixed via a press fit on the valve-side end of the upper part of the stem.
  • the valve body is made in the usual way of a thermoplastic material, for example of a polyalkylene, in particular polyethylene or polypropylene.
  • a thermoplastic material for example of a polyalkylene, in particular polyethylene or polypropylene.
  • Fig. 2 a sectional view of the combination of upper part of the star and valve body
  • Fig. 3 The lower part of the star in section
  • Fig. 4 The upper part of the star with sealing collar and fixing ring;
  • Fig. 5 The spring element.
  • valve disk 1 shows in section an embodiment of a solids valve according to the invention, introduced into a valve disk 1.
  • the solids valve is clamped over the valve disk 1 on the dome of the box, wherein the valve disk engages with its Krimprand 15 above and around the upper edge of the can dome.
  • the valve disk 1 itself has a central recess around which a gutter or trough-shaped central part 1 1 rotates. On the inside of the valve plate 1 is limited by the rising edge 12, outside the tub rises to the Crimea 15.
  • valve body 2 Within the valve disk 1 is the valve body 2, in the central round recess of the Ventilstem 3 is guided.
  • the valve body 1 is fixed via a rising edge 24 with outwardly projecting projection 25 on the rising inner edge 12 of the valve disk 1; an outwardly facing round surface 26 nestles against the underside of the trough 1 1 of the valve disk 1 at.
  • the shape of the valve body 1 is stabilized by the outer peripheral edge 26 surrounding the can.
  • the valve body 2 has the necessary sealing means to ensure the tightness of the valve with respect to the valve disk 1 around the star 3. These are optionally sealing lips, which are arranged against the rounded portion of the valve disk 1 in the transition from the trough 1 1 to the rising edge 12.
  • the sealing lip 23 On the can side, ie on the side of the valve body 2 facing the can interior, there is at least one circumferential sealing lip 23, which runs essentially parallel to the course of the central recess 21 and acts against the foot 31 of the star.
  • the foot 31 serves as a sealing seat and is a concentric extension of the star 3 with slightly curved course. In the rest or closure position of the star 3 shown here, the sealing lip 23 acts against the foot 31 and prevents the entry of can contents into the inlet opening 33 of the star.
  • the star In the central recess 21 of the valve body 2, the star is guided, which has a central channel 34 which serves as an outlet channel for the can contents.
  • the star On the can side, the star has at least one lateral opening 33, which serves as an inlet opening for the can contents. In the illustrated rest position, this inlet opening 33 is closed by the sealing action of the lip 23 of the valve body 2 against the sealing seat 31 of the star. When the star is pressed in, the lip loses its sealing effect, and can contents can pass into the channel 34 via the inlet opening 33 and exit.
  • the star has in its lower part 3b inlet openings 33 which are distributed uniformly over the circumference.
  • the star 3 of the solid valve is divided into two parts in an upper part 3a and a lower part 3b.
  • the upper part 3a encloses the larger part of the channel 34 and is connected via a membrane 22 with the valve body 2.
  • Valve body 2 and upper part 3a of the star 3 are made in one piece by injection molding and are preferably made of the same material.
  • the lower part 3b of the star cooperates with the sealing lip 23, which acts against the foot 31 of the lower part 3b. There may be several sealing lips.
  • the upper part 3a comprises the outlet opening of the valve according to the invention and the lower part 3b the inlet openings 33 for the can contents.
  • the membrane 22, which connects the upper part 3a of the star to the valve body 2, is arranged concentrically around the star and has a substantially stepped course along the outside of the lower part 3b of the star.
  • the membrane 22 is sufficiently elastic and absorb the movement of the star 3 in the release of the pressure box.
  • the step-shaped course gives an area reserve which compensates for the elongation of the membrane when triggered by the displacement of the star 3.
  • This is also a circumferential recess 27 in the valve body 2, which leaves a gap between the upper end 24 of the valve body 2 and the membrane 22.
  • the membrane 22 starts on the inside of the valve body 2, follows the course of its inner wall in the can-side region and then continues in stages to the outer wall of the upper part 3a of the star.
  • the lower part 3b of the star has, in addition to its foot, a can-side extension 35, which serves as an abutment for the spring element 40. Shown is only the central part of the spring element 40.
  • the spring element 40 is moved doseneinafter upon actuation of the star and thus releases the path between the sealing lip 23 and the foot 31 at the lower part 3b of the star.
  • the valve body has in the socket-protruding part 26 two recesses 29 which engage in the retaining arms of the spring element.
  • the upper part 3a and the lower part 3b of the star are positively connected with each other.
  • the upper part 3a of the star has a encircling bead 28 at its can end, which protrudes into an appropriate extension of the channel 34 in the region of the lower part 3b of the Stem.
  • the upper part 3a of the stem has a collar which serves to seal a dispensing aid, such as a foaming gun.
  • a sealing collar is made of a thermoplastic elastomer which provides the required sealing properties.
  • the upper part 3a of the stem is closed by a fixing ring 43 made of a relatively hard material, which protrudes into the receptacle of a VerDumungspistole and forwards the pressure of the trigger on the star. Sealing collar 42 and fixing ring 43 are firmly connected.
  • the fixing ring on an annular recess 44 into which protrudes a projection 45 of the sealing sleeve.
  • the sealing collar 42 is at the same time secured to a recess 46 in the upper part 3a of the stem.
  • 2 shows the combination of upper part 3a of the stem and valve body 2.
  • the upper part of the stem 3a is connected via the membrane 22 to the valve body 2, wherein the membrane 22 takes a step-shaped course.
  • the stepped course guarantees the area reserve and at the same time the elasticity of the membrane and thus the flexible integration of the upper part 3a of the stem in the valve body.
  • the outer protrusion projection 25 of the valve body is used for fixing on the inner edge of the valve disk, wherein the circumferential groove 27 provides the necessary elasticity for insertion of the valve body 2 in the valve disk 1.
  • the can-side widening 26 of the valve body 2 results in a tight fit on the underside of the trough 11 of the valve disk 1 and, on the other hand, provides the recesses 29 for fixing the spring element 40.
  • the can-side part of the stem part 3a has a circumferential extension 28 which fits snugly into a corresponding extension of the channel 34 in the region of the lower part 3b of the star, see Fig. 3. Shown are the inlet openings 33 for the can contents upon actuation of the valve and the foot 31, which acts as a sealing seat against the valve body 2.
  • a can-side extension 35 of the lower part 3b of the star 3 interacts with the spring element 40 and simultaneously serves to guide and support the valve 3.
  • Fig. 4 shows the channel 34 of the star with arranged thereon sealing collar 42 for the connection of a Ausbring Anlagen, such as a gun.
  • a Ausbring kau such as a gun.
  • the fixing ring 43 which is made of a hard material and absorbs the pressure of the Ausbring Anlagen upon actuation of the valve.
  • sealing collar 42 and the fixing ring 43 are shown in section, the upper part 3a of the star, however, in plan view. It can be seen that sealing collar 42 and fixing ring 43 are secured together in a type of toothing and the sealing collar 42 is secured to a recess of the stem part 3a. Cuff and fixing ring are connected together in a kind of press fit.
  • Fig. 5 shows the spring clip 40, which has two inwardly notched teeth 47, which serve to fix the spring clip 40 in the recesses 29 of the valve body 2.
  • the teeth 47 cause a very elastic seat and engage in the recesses 29, they serve as retaining arms of the spring clip.
  • the spring clip 40 has in its central lower region a dent 48, which projects into the socket.
  • the dimple 48 lies close to the extension 35 of the lower part 3b of the star and absorbs the pressure exerted by the Ausbring Vietnamese on the star on. Under pressure, the spring clip 40 bends canonward and causes the provision of the star in the closed position after completion of a Ausbringvorgangs.

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)
  • Closures For Containers (AREA)
  • Nozzles (AREA)

Abstract

L'invention concerne une soupape pour matériaux solides pour récipients sous pression, en particulier pour l'application de mousses de montage, comprenant une tête de soupape (1), un corps de soupape (2) disposé dans la tête de soupape (1), une étoile (3) montée dans un évidement central (21) du corps de soupape (2), comprenant au moins une ouverture d'entrée (33) pour le contenu de récipients sous pression pouvant être libérée par l'actionnement de l'étoile m(3), au moins une ouverture de sortie, un canal connectant l'ouverture d'entrée (33) à l'ouverture de sortie, au moins un élément d'étanchéité (23) agissant entre le corps de soupape (2) et l'étoile (3), ainsi qu'un élément de ressort dans lequel l'étoile (3) est formée de deux parties, la partie supérieure (3a) étant liée à la partie inférieure (3b) par complémentarité de forme ou par coopération de force, une membrane élastique périphérique (22) liant intégralement le corps de soupape (2) à la partie supérieure (3a) de l'étoile (3) et les deux parties de l'étoile (3) formant une unité fonctionnelle qui reçoit le canal (34).
EP18765560.0A 2017-08-16 2018-08-16 Soupape en matériaux solides pour récipients sous pression Active EP3668802B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL18765560T PL3668802T3 (pl) 2017-08-16 2018-08-16 Zawór do substancji stałych dla puszek ciśnieniowych

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017118704.9A DE102017118704A1 (de) 2017-08-16 2017-08-16 Feststoffventile für Druckdosen
PCT/EP2018/072224 WO2019034733A1 (fr) 2017-08-16 2018-08-16 Soupapes pour matériaux solides pour récipients sous pression

Publications (2)

Publication Number Publication Date
EP3668802A1 true EP3668802A1 (fr) 2020-06-24
EP3668802B1 EP3668802B1 (fr) 2021-09-29

Family

ID=63517833

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18765560.0A Active EP3668802B1 (fr) 2017-08-16 2018-08-16 Soupape en matériaux solides pour récipients sous pression

Country Status (6)

Country Link
US (1) US11214432B2 (fr)
EP (1) EP3668802B1 (fr)
DE (1) DE102017118704A1 (fr)
PL (1) PL3668802T3 (fr)
RU (1) RU2768415C2 (fr)
WO (1) WO2019034733A1 (fr)

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Also Published As

Publication number Publication date
US11214432B2 (en) 2022-01-04
RU2020110520A (ru) 2021-09-16
DE102017118704A1 (de) 2019-02-21
PL3668802T3 (pl) 2022-01-31
WO2019034733A1 (fr) 2019-02-21
RU2768415C2 (ru) 2022-03-24
US20200369457A1 (en) 2020-11-26
RU2020110520A3 (fr) 2021-09-16
EP3668802B1 (fr) 2021-09-29

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