DE7037850U - VALVE FOR RESERVOIR CONTAINING PRESSURIZED - Google Patents

Description

DK. IN". E. HOFFMANN · DIPL. ING. V .. EITLE · DR. REK. NAT. K. HOFFMANN PATKNTANW A I / I 'K D.8000 MÖNCHEN 81 ■ ARABELLASTRASSE 4 · TELEPHONE (0811) 911087

Neotechnic Engineering Limited, Clitheroe, Lancashire / England

VALVE FOR RESERVOIR CONTAINING PRESSURIZED MEDIA

The innovation relates to valves for aerosol containers and in particular Valves through which the container can be filled or refilled after use.

According to the present innovation, a valve for a pressure medium containing container was created, which a the rigid housing body forming the top of the container and one arranged in an opening of the housing body Has valve stem, according to the innovation, the structure of the valve was designed so that a second, rigid body

· ■ - 2 -

surrounds the valve stem on the inside of the housing body and is attached to it, that the sealing, flexible The membrane surrounding the valve stem is arranged between the housing body and the second, rigid body, wherein the membrane a seal with the valve stem and a ring seal between Qehäuseküx-pex- and the allocate, ötäx-r-öfi Body forms, and that one of the bodies near the ring seal is shaped so that under pressure between the other start the body and the diaphragm acting medium, deforming them in order to break through the ring seal or to adhere to it bypassed behind the formed part of the membrane to flow in the direction of the interior of the container.

The innovation also relates to containers provided with such a valve, the housing body of which comprises the entirety of the container or form part of the housing.

According to an expedient embodiment, the valve is according to of the present innovation designed so that a gap between the valve stem and the sides of the opening in the housing body is formed to introduce pressurized medium between the membrane and the housing body that the second, rigid body of the seal between the membrane and the housing body opposite one or more Has slots, openings and / or parts which are deformed in a direction facing away from the membrane, and that the slots, openings and / or deformed parts extend axially beyond the area of the ring seal, however are locally limited in the circumferential direction of the ring seal.

Embodiments of the present invention are under Explained with reference to the accompanying drawings.

Figure 1 of the drawings is a side sectional view of a

Valve according to the present innovation;

FIG. 2 is a partial top view taken in the direction of line 2-2 of FIG Fig. Ij

FIG. 3 is an enlarged detail view of that in FIG. 1 with III designated circle with normal position of the valve;

FIG. 4 is a view comparable to FIG. 3 and shows of parts during a filling;

FIG. 5 is a side sectional view, comparable to FIG. 1, of a further embodiment of the present invention Invention showing the parts during a filling;

Fig. 6 is a partial plan view taken in the direction of line 6-6 in Fig. 5;

Fig. 7 is a view corresponding to Fig. 6 of another embodiment; and

Figure 8 is a sectional view taken on line 8-8 in Figure 7.

The valve shown in FIGS. 1, 2 and 3 of the drawings has a cap Io serving for attachment, on which a flange 11 extends axially downward. The flange is used for attachment to a container (not shown), which is done by forging, rolling or other suitable methods. The flange forms a rigid and firm support for the other parts of the valve. On the upper part, the cap Io is provided with an opening 12 located in the middle and with an inner, annular recess 13. The middle part lh of the cap between the recess 13 and

the opening 12 has a somewhat arched shape.

Inside the cap Io is a rigid valve housing body attached; this has a cylindrical part 16 with inwardly directed plan 17 at the lower end. At the At the upper end, a flange 18 extends in the radial direction and ends at the outer circumference in an axially directed lip or edge 19. This is located within the annular recess 13 of the cap.

The valve housing body 15 is held by an inwardly directed, drop forged portion 20 of the mounting cap.

A longitudinally reciprocable valve stem extends through the valve housing body 15 and is on lower end passed through the lower puddle 17. The valve stem 21 is provided with an annular flange between its ends Mistake; the underside of the same forms a seat for one end of a helical spring 23. The lower end of the helical spring is supported on the flange 17 and presses the shaft in its uppermost position. At the lower end of the valve stem has an axial groove or slot 24 to allow To connect interior of the valve housing body 15 permanently with the interior of the container. An axial bore 25 extends downward from the upper end of the valve stem and communicates with a radial bore 26. These is located above the cap Io when the valve stem is aligned in its uppermost position.

Above the flange 18, an elastic sealing membrane 27 is enclosed between the curved central part Ik of the cap Io and the radially extending flange 18 of the valve housing body 15. The sealing membrane 27 creates a firm, sliding seal on the valve stem and is also used

in good time to guide it, as the shaft gives a little has a smaller diameter than the central opening 12 of the cap (as shown in FIG. 3 of the drawings). The purpose for this will be explained in more detail.

The radially extending flange 18 of the valve housing body is provided with three radially extending slots 28, which extend transversely to edge 19 and inwardly beyond an annular portion 29 of the cap. Of the Part 29 of the cap is deformed inward and presses the The sealing membrane locally on the flange i8. Thus forms it has a ring seal and prevents the contents of the container from escaping.

In Fig. 3 of the drawings, the valve is shown in its normal rest position when the valve stem 21 is down Pressing down until the radial bore 26 is below the sealing membrane 27 can be under pressure Liches medium flow out of the container through the bores 26 and 25 to the outside. Depression of the valve stem 21 usually looks via a push button (not shown) on the top of the shaft.

In Fig. 4 of the drawings, the operation during filling is of the container from a filling head 3o shown. A seal 31 of the filling head lies on the outer surface of the Attachment serving cap Io, namely where this forms the recess 13. The medium to be filled arrives from the filling head 3o through an annular gap 32 which runs through the sides of the opening 12 and through the valve stem 21 is formed. From there, the medium flows along the top of the elastic sealing membrane 27. Through the radially extending flange 18 located slots 28 is a local, downward deflection the sealing membrane 27 possible to pass through

of the medium along the slots 2o and via the seal ⁴ η to facilitate the container, as indicated by the arrows

interpreted path shown i-.t. That kind of stuffing can be carried out with the aid of a push button located on the top of the valve stem 21.

In Figure 5 of the drawings the innovation is in use shown on an aerosol container. The aerosol container is used to disperse measured bursts of the aerosol. To this Purpose, the structure described above was further developed or transformed; by using a sealant Disc body 4o is arranged on the underside of the cylindrical part 16 of the valve housing body 15. The disc 4o forms a seal with the valve stem and with the Splash 17 and is held in place by the helical spring 23. The length of the slot 24 is reduced. Therefore, when the valve stem is in its raised position, the groove or slot 24 connects the dimensioning space formed within the cylindrical part 16 with the interior, the container, 'while the radial bore 26 is located above the sealing membrane 27. However, if the valve stem according to Fig. of the drawings, the entire length of slot 24 is below that for sealing serving disc 4o, which is why the aerosol located within the space used for dimensioning by the Bore 26 and through the bore 25 into the outside air, instead of slots 28, the flange 18 is with openings 45 which are located opposite the deformed, annular part 29 of the cap.

The cap Io is in one position in FIG. 5 of the drawings shown on a container 42.

To fill this container, a filling head 41 is on

Valve stem 21 sealed (a push button previously on the valve stem has been removed). The valve stem is pressed down until the bore 26 is below the sealing membrane 27. Medium under pressure is consequently fed from the filling head through the bores Zo and 25 into the space used for dimensioning. Since this is sealed, the pressure of the medium in it causes it to be pressed between the sealing membrane 27 and the flange 18. In this case, the sealing membrane is pressed upwards against the curved central part 14 of the cap. This movement enables the medium to pass through the openings 45 in the flange into the container. During the flow of the medium along the path shown with arrows, leakage through the medium becomes more annular. Prevented late by the sealing effect of the sealing membrane 27 on the valve stem 21.

The flange 18 of the valve housing body 15 of the FIGS. 1 '"id 5 shown embodiment can be provided with one or more recesses 46, which are used as an alternative to the slots 28 and the openings 45 (FIGS. 7 and 8 of the drawings) or the openings 45 are effective to enable a local, downward deformation of the sealing membrane and a flow of the medium along the seal, which exists between the membrane and the cap according to the arrangement shown in FIG illustrated arrangement, the medium with respect to the seal, in addition passed. in both cases, a channel must be provided, which is by means of suitable shaping of the cap and- / or of the flange 18 _allows? to allow access to the medium in the interior of the container. in the case of the arrangement shown in Fig. 1 of the drawings, to which in particular the present further development is applicable,

For example, the leading edge may be radially notched or slotted to form a channel between the outer edge of the valve and to form the adjacent part of the cap. When applied to the construction shown in Figure 5 of the drawings can openings in the plan 16 at the radially outer Ends of the depressions may be provided.

Claims (2)

PROTECTION CLAIMS 1. Valve for pressure medium containing container with a rigid housing body, which is at least the top of the Forms container and with one in an opening of the housing body arranged valve stem, characterized in that a second, rigid body (15) the valve stem (21) on the inside of the housing body (lo) surrounds and is attached to this that a sealing, flexible membrane (27) surrounding the valve stem between the housing body (lo) and the second, rigid body (15) is arranged, wherein the membrane makes a seal with the valve stem (21) and an annular seal between the housing body (lo) and the second, rigid body (15), and that one of the Body near he ring seal is shaped so that under ** pressure The medium acting between the other rigid body and the membrane deforms the membrane in order to break through the ring seal or in order to flow in the direction of the interior of the container by passing it behind the deformed part of the membrane. 2. Valve according to claim 1, characterized in that a gap (32) between the valve stem (21) and the sides the opening (12) is formed in the housing body (lo) to allow pressurized medium between the membrane and initiate the housing body that the second, rigid body (15) of the seal between the membrane and the housing body opposite one or more slots (28), openings (45) and / or parts (46), which in from the diaphragm facing away from the direction are deformed, and that the slots (28), openings (45) and / or deformed parts (46) extend axially beyond the area of the ring seal, but locally in the circumferential direction of the ring seal are limited. -Ιοί. Valve according to claim 1 or 2, characterized ;, the outer edge area of the second, rigid body (15) is equipped with a lip (19) which extends in the direction of the housing body (lo) that the membrane (27) is provided within the lip (19) that the housing body (? o) around the outer edge of the second, rigid body and inward g (directed is deformed to the second "" L-rpsr (15) and to hold the membrane (27) in their position relative to one another, and that the second, rigid body (15) has one or more has radial slots, which extend radially inward extend over the lip (19) and * d <5Ls adjacent parts, to allow the deformation of the Meftgfrao (27), whereby the pressurized medium can deform the membrane in the slot or in the slots forcing in order to adhere to the Seal past the slots in the lip to get inside the container. Ί. Vent *] according to claim 1, characterized in that the valve stem (21) forms a sealed space with the membrane (27) and the second, clear body (15), that when the valve stem is pushed into a first position, this space passes through a first channel (25, 26) in the valve stem communicates with the outside air outside the container, but is sealed off from the inside of the container so that the valve stem (21) is resilient against d. ''. * Contact pressure can be moved into a second position in which the space is in communication with the interior of the container via a second channel (24), but is closed to the outside air outside the container; t that the second, rigid body ( 15) is equipped with one or more openings of the ring seal opposite one another, the Openings extend radially inward to a position aligned radially opposite a position is on which the surface of the housing body is axially spaced from the diaphragm, whereby under pressure in the sealed space through the first channel in the shaft cingcopeisScs medium dis Msir.br3.ri locally in the direction of the axially spaced surface of the housing body can deform, and that the membrane thereby the opening or the Covers openings and lets the pressurized medium into the interior of the container.