EP3323775A1 - Valve insert and container - Google Patents

Abstract

The present invention provides a valve insert (1) for a container (2) and a container (2) with such a valve insert (1) ready, wherein the valve insert (1) has a plug body (10) with two axial bores for flow paths in and from the container (2). Each flow path can be opened and closed by means of a valve. A first axial bore is not centrally located and has between a upper bore portion (15) and a lower bore portion (17) a shoulder (17b) and a diameter-reduced portion (17a), wherein at the upper bore portion (15) has an enlarged diameter receiving bore (13) connects. The plug body (10) has two axially spaced radial bores (14, 16) which open into the receiving bore (13) and into the lower bore portion (15). The valve core (1) has a cooperating valve combination comprising a first valve having a first valve seat (15a) located in the upper bore portion (15) and a second valve having a second valve seat (17b) defined by the shoulder (17b). a first flow path (a) from the first radial bore (14) through the receiving bore (13) over the upper bore portion (15) into the second radial bore (16) and a second flow path (b) from the lower bore portion (17) through the reduced diameter portion (17a) via the upper bore portion (15) into the second radial bore (16).

Description

The invention relates to a valve insert for placement in a container opening, for example in an opening of a drum, and a valve insert assembly comprising the valve insert according to the invention with a fastening device, and also to a corresponding container, which is equipped with such a valve core or even with the valve core assembly.

It is known from the prior art to provide containers, such as single- or reusable drums, also called kegs, with a valve insert ("fitting") which provides flow paths for media into and out of the container, each of which can be opened and closed by means of a valve are.

In DE 101 38 365 A1 Referring to a disposable keg, there is shown a fitting having two coaxially centered flow paths. In this case, a spring-loaded hollow cylinder tube is arranged in an opening which extends through the fitting. Through the hollow cylinder tube extends a first flow path, which is closed by a spring-loaded spherical body. The second flow path runs coaxially around the hollow cylinder tube, which as a valve body for closing the second flow path also has a spring-loaded outer peripheral annular disc.

A valve insert for a container such as a keg that is in EP 1 773 709 B1 which is actually related to a nozzle adapter, has flow paths each closed with a spring loaded valve, with a first flow path for the product centered in the valve core while the second and third flow paths leading to gas flow into or are provided from the container, are radially spaced therefrom.

Out US 4,756,347 A is a valve assembly for permanent arrangement in the opening of a container known to fill the container can. To tap beer, the valve assembly is supplemented by an adapter with a plug body having an axial bore with an upper and an enlarged diameter lower portion in which the valve housing of the valve assembly is received. The valve housing has an axial bore in which a valve body is movably arranged. The axial bore is aligned with the bore in the plug body, in the upper portion thereof a port valve body movably disposed at its lower end in sealing engagement with the valve body of the valve assembly. Through the port valve body and the valve body extends a central bore which communicates with radial openings between two flanges at the upper end of the port valve body and at the lower end of the valve body. A spring, which is supported on a siphon part to which the valve housing is connected at the lower end, pushes the valve body and the connection valve body upwardly into a closed position in which the flanges surrounding the radial openings sealingly against the inner surface of the upper bore portion or the bore in the valve housing. Through the plug body, two axially spaced radial threaded bores extend into the upper bore portion, wherein the upper threaded bore for connecting a tap and the lower threaded bore for connection of a compressed gas source are provided. In the end face of the plug body is an opening through which a pin can be inserted to transfer the connection valve body together with the valve body against the restoring force of the spring in an open position in which two flow paths are released through the valve assembly with the adapter. Through the plug body, two axially spaced radial threaded bores extend into the upper bore portion. The upper threaded hole is provided for connecting a tap and the lower threaded hole for connecting a compressed gas source. A first flow path in the opening position of the valve assembly extends from the container through the siphon part, through the central bore in the valve bodies from the radial openings at the upper end of the connection valve body into the upper threaded bore to the tap. A second flow path extends (from the pressurized gas source) through the lower one Tapped hole, through the upper bore portion in the plug body, through an annular gap between the valve bodies and the valve housing to radial holes in the valve housing, which communicate with the container interior. A disadvantage of this valve assembly with the adapter is formed in the closed position of the valve assembly, another flow path from the compressed gas source through the lower threaded hole, through the upper bore portion in the plug body in the upper threaded bore to the tap, which must therefore always be carefully closed when the valve is unconfirmed , otherwise the compressed gas escapes through the tap.

In all previously known valve inserts for such containers, which are intended for filling with a carbonated beverage, especially beer, there is, as soon as a corresponding dispensing unit was arranged and put into operation, the problem the dripping after a successful tapping, with a certain residual amount of the tapped beverage, resp. Biers, which is present in the outlet pipe of the dispensing nozzle after closing the dispensing valve, slowly trickles out of this and thereby leads to contamination of the dispensing station.

This problem is indeed in the US 3 556 143 A addressed, but there is a beer tap disclosed, which is not connected to a container, but on a line and thus only one flow path, namely those from the line, provides The disclosed tap is based on a tubular body through which a through hole extends from the adjacent to the connection opening a discharge pipe inclined obliquely downward and branch off on the upper side of a connection portion to a receiving platform for a solenoid. On the underside there are two openings, with a port close to the connection connecting the through-hole with the output tube, and communicates the remote port with the environment. In the through-bore, a valve piston is movably guided, which has a Ventilkopf-, shaft and cylinder section. The valve head section faces the connection opening, the actuating cylinder section lies in the region of the connection section or the openings. The cylinder portion has a slot into which a pin is guided for actuation of the valve piston, which is moved through the connection portion by the switching magnet in a circular path. Further, the cylinder portion on the bottom has a longitudinal groove which extends in the closed position of the piston over both openings at the bottom of the through hole, so that an air flow from the environment is made possible in the dispensing tube, which allows the outflow of beer residues from the through hole. However, this tap is not suitable as a fitting to a container such as a keg, which is to be acted upon by a compressed gas through the same valve, to which these fittings must have a second flow path communicating with the container interior.

Based on this prior art, it is an object of the present invention to provide an improved valve insert for a container such as a keg, which provides at least two flow paths in and out of the container and prevents dripping after a successful tapping operation.

This object is achieved by a valve insert with the features of claim 1.

A further object, in order to be able to ideally arrange a valve insert which is improved with respect to the dripping, in an opening of a container is achieved by the valve arrangement having the features of the independent claim 9.

The further object of providing a container with a valve insert, which can be operated without dripping during tapping, is achieved by the container having the features of independent claim 10.

Further developments of the devices are set forth in the subclaims.

A valve insert according to the invention, which is provided for arrangement in the opening of a container, in particular a disposable or reusable keg, such as a keg, has a plug body with at least two axial bores. In this case, "axial" is understood to mean not only with respect to the axis of symmetry of the rotationally symmetrical shape of the plug body, but also "axially parallel" bores are to be included, with respect to any longitudinal axes through the plug body, which are parallel to the axis of symmetry. The axial bores, when the valve core is disposed in its intended function in the opening of a container, provide flow paths into and out of the container. In the holes operable spring-loaded valves are arranged with which each flow path can be opened and closed.

A first embodiment of the valve insert according to the invention, with the above object is achieved, provides that a first of the axial bores is not arranged centrally and has a diameter-narrowed portion between an upper bore portion and a lower bore portion aligned therewith. Further, the upper bore portion opens into an enlarged diameter receiving bore which extends to an end face of the plug body, which faces away from the container when the valve insert is arranged in the opening of the container as intended. Further, the plug body has a first radial bore, which opens into the receiving bore, and axially spaced therefrom a second radial bore, which opens into the upper bore portion. Here, the valve core on a cooperating valve combination of two valves: This includes a first valve with a first valve seat, which is in the upper bore portion between the receiving bore and the mouth of the second radial bore, and a second valve having a second valve seat, which is formed by the diameter-reduced portion.

• ein erster Strömungsweg von der ersten radialen Bohrung durch die Aufnahmebohrung über den oberen Bohrungsabschnitt in die zweite radiale Bohrung und
• ein zweiter Strömungsweg von dem unteren Bohrungsabschnitt durch den durchmesserverengten Abschnitt über den oberen Bohrungsabschnitt in die zweite radiale Bohrung erstrecken.

In this way, with the cooperating valve combination two flow paths can be closed together or alternately, wherein

• a first flow path from the first radial bore through the receiving bore via the upper bore portion into the second radial bore and
• a second flow path extending from the lower bore portion through the diameter-reduced portion via the upper bore portion in the second radial bore.

The second flow path is used by opening the second valve ("bleed valve") for tapping a product (drink, beer) from a container, wherein it may be provided that adjoins the second radial bore a dispensing spout, for example, a pipe or a Can be line and the part of a tap here unspecified can be.

The first flow path through the valve insert, however, does not result in the use of the valve insert in a container opening in or out of the container, but allows, when the first valve ("vent valve") is opened, a ventilation of the dispensing spout, the second radial bore is connected. The cooperating valve combination prevents both valves from being opened at the same time, so that the second radial bore or the dispensing spout can only be vented if not tapped. By venting the dispensing spout after the pin, however, ensures that after the pin in the dispensing spout no product remains that trickle slowly in fittings and fittings of the prior art from the dispensing spout, since now with the valve insert according to the invention when closing the dispensing nozzle no negative pressure Zapfauslauf more arises, and there when closing the nozzle still existing product residues can leak completely with the product flow.

The first radial bore can also be referred to below as a ventilation bore and the second radial bore as a nozzle connection bore.

A cooperating valve combination of another embodiment of a valve core according to the invention may provide that the first valve (vent valve) is formed by a valve portion of an actuating pin which is axially movably disposed in the receiving bore and upper bore portion having the first valve seat. The valve portion is disposed between an actuator head on the container side remote and a plunger portion on the other side of the actuating pin. The second valve (dispensing valve) is formed by a separate from the actuating pin, but operatively engageable with the tappet portion dispensing valve member having a sealing seat portion disposed axially movable in the lower bore portion and the reduced-diameter portion forming the second valve seat.

• in einer ersten, oberen Betätigungsstellung, die die Ausgangsstellung des unbetätigten Betätigungsstifts ist und bei der der Ventilabschnitt in der Aufnahmebohrung vorliegt und der Stößelabschnitt von dem Zapfventiiteif beabstandet ist, der erste Strömungsweg (Belüftung) freigegeben und der zweite Strömungsweg (Zapfen) verschlossen ist, und
• in einer zweiten, mittleren Betätigungsstellung, bei der der Ventilabschnitt in dem ersten Ventilsitz in dessen oberen Bereich vorliegt und der Stößelabschnitt das Zapfventilteil berührt, aber noch nicht bewegt hat, beide Strömungswege verschlossen sind, und
• in einer dritten, unteren Betätigungsstellung, bei der der Ventilabschnitt in dem ersten Ventilsitz in dessen unteren Bereich vorliegt und das Zapfventilteil durch die Zusammenwirkung mit dem Stößelabschnitt von dem zweiten Ventilsitz beabstandet vorliegt, der erste Strömungsweg verschlossen und der zweiten Strömungsweg freigegeben ist.

To actuate this cooperating valve combination for common or alternate closing of the two flow paths, the actuating pin can be moved between three operating positions, wherein

• in a first, upper actuating position, which is the starting position of the unactuated actuating pin and wherein the valve portion is present in the receiving bore and the plunger portion is spaced from the Zapfventiiteif, the first flow path (vent) released and the second flow path (pin) is closed, and
• in a second, middle actuating position, in which the valve portion is present in the first valve seat in its upper region and the tappet portion touches the dispensing valve part, but has not yet moved, both flow paths are closed, and
• in a third, lower actuating position, wherein the valve portion is present in the first valve seat in the lower region and the nozzle part is present by the interaction with the plunger portion of the second valve seat, the first flow path closed and the second flow path is released.

For the interaction of the valves of the valve combination, the axial lengths of the valve portion and tappet portion, the length of the upper bore portion and the position of the nozzle seat and the dimensions of the nozzle part are coordinated so that the nozzle member can only be moved to open when the vent valve is closed is.

In order to be able to supply an optionally required clamping or dispensing gas through the valve insert in its use arrangement in the container, the plug body may have a further axial, also not centrally arranged bore for providing a further flow path, wherein in a lower bore portion a spring-loaded ( Rückschlag-) valve is arranged axially movable.

For the return springs of the first and second valve of the valve combination is provided in a further embodiment of the valve insert, that is arranged around the valve portion, a return spring which is supported on a rear side of the head portion and on a shoulder of the receiving bore, which between the upper bore portion and the enlarged diameter receiving bore is formed. To guide the return spring, a ring wall is formed concentrically around the opening of the upper bore portion on the shoulder in the receiving bore, which not only serves the positioned arrangement of the return spring, but also extends the first valve seat in the upper bore portion. In addition, the annular wall can provide a stop for the head portion of the actuating pin in the third operating position.

For sealing the piston-like valve portion in the valve seat of the cylindrical upper bore portion for closing the ventilation valve, the valve portion of the actuating pin may have an annular groove with a sliding seal disposed therein.

To secure the return springs of the valves (nozzle and CO ₂ valve) in the lower bore portions of the valve core may have a container side arranged plug with pin portions which are arranged projecting into the lower bore portions. At the end faces of the pin sections, the return springs are supported, ie, the pin sections provide a stop for return springs of the nozzle part and the check valve ready. In order that the flow paths provided by the lower bore sections are not interrupted in and out of the container, corresponding bores extend through the plug and through the pin sections which continue the respective flow path.

In this case, in one of the bores, which extends through the journal section which is assigned to the lower bore section leading to the nozzle part, a riser tube tuned to a length of the container can be arranged.

For a reliable and guided cooperation of the two valves, the plunger section may be formed at its end facing the nozzle part as a reduced diameter pin portion which is received in a corresponding receiving bore in the sealing seat portion of the nozzle part. The distance between the end of the pin portion and the nozzle portion and the bottom of the receiving bore may be selected so that the end of the pin portion even in the first, upper position of the actuating pin protrudes into the receiving bore in the sealing seat portion, so that in the further operation in the second or third position of the actuating pin a secure engagement is ensured and an axial offset is reliably prevented. In the second position then the pin portion contacted with its end the bottom of the receiving bore in the sealing seat portion, so that in the further actuation of the actuating pin in the third position, the nozzle part is pressed out of its valve seat.

Furthermore, the invention relates to a valve core assembly comprising the valve insert according to the invention for placement in an opening of a container and a fastening device for fastening the valve core in the opening of the container. The fastening device enables secure, non-destructive releasable and sealed attachment of the valve insert according to the invention in the opening of the container. It is envisaged that reduces the diameter of the plug body of the valve core from an upper, container-facing portion to form a radial step below the radial bore to a lower container facing portion. In this lower container facing portion also a außenumfängliche groove is introduced. The fastening device has an annular flange with a sleeve which extends axially from a flange collar and has a circumferential inwardly pointing curvature, and a locking ring, in which an annular disc in the axial direction from the inner circumference radially inwardly facing locking hooks and in the region Extending the outer circumference in the same axial direction a ringwall. For attachment, the sleeve is arranged around the lower container-facing portion of the plug body and the annular disc of the locking ring is arranged between the flange collar and the radial step of the plug body, so that the annular wall encloses the flange collar and the locking hooks are pressed by the curvature of the sleeve in the outer circumferential groove , or the valve insert spreads the locking hook against the curvature of the sleeve.

Another object of the invention is a container having a valve insert according to the invention in an opening. The valve insert provides at least two flow paths openable and closable by means of an actuatable, spring-loaded valve into and out of the container.

Preferably, the valve core, which is arranged in the container according to the invention, such a valve insert according to the invention, which is part of a valve core assembly having a fastening device for fastening the valve core in this opening next to the valve core for placement in an opening of a container. The valve insert is arranged by means of an annular flange with a circumferential, inwardly curved sleeve and sealed by a locking ring in the container opening, wherein the valve insert spreads the locking hooks of the locking ring against the curvature of the sleeve.

Further embodiments of the devices, as well as some of the advantages associated with these and other embodiments, will become more clearly and better understood from the following detailed description with reference to the accompanying drawings. Items or parts thereof that are substantially the same or similar may be provided with the same reference numerals. The figures are merely a schematic representation of an embodiment of the invention.

Fig. 1

eine Seitenschnittansicht des Ventileinsatzes,

Fig. 2

eine Seitenschnittansicht des in einer Behälteröffnung abgedichtet angeordneten Ventileinsatzes mit montierter Schutzkappe,

Fig. 3

eine Seitenschnittansicht entsprechend Fig. 2 mit abgehobener Schutzkappe und mit dem Betätigungsstift in der oberen, ersten Betätigungsstellung,

Fig. 4

eine Seitenschnittansicht entsprechend Fig. 2 mit geöffnetem CO₂-Rückschlagventil,

Fig. 5

eine Seitenschnittansicht entsprechend Fig. 2 mit dem Betätigungsstift in der mittleren, zweiten Betätigungsstellung,

Fig. 6

eine Seitenschnittansicht entsprechend Fig. 2 mit dem Betätigungsstift in der unteren, dritten Betätigungsstellung,

Fig. 7

a bis c Seitenschnittansichten des Ventileinsatzes in den drei Betätigungsstellungen mit Strömungswegen.

Showing:

Fig. 1

a side sectional view of the valve core,

Fig. 2

a side sectional view of the sealed sealed in a container opening valve insert with mounted protective cap,

Fig. 3

a side sectional view accordingly Fig. 2 with lifted protective cap and with the actuating pin in the upper, first operating position,

Fig. 4

a side sectional view accordingly Fig. 2 with open CO ₂ check valve,

Fig. 5

a side sectional view accordingly Fig. 2 with the actuating pin in the middle, second operating position,

Fig. 6

a side sectional view accordingly Fig. 2 with the actuating pin in the lower, third operating position,

Fig. 7

a to c are side sectional views of the valve core in the three operating positions with flow paths.

The device according to the invention relates to a valve core 1, as exemplified in the Fig. 1 to 7a . b, c for use in the opening 2 'of a container or barrel 2 is shown. The barrel 2 is not shown as a whole, but only the portion that includes the opening 2 '.

Fig. 1 shows a valve core 1 which is sealed by means of a fastening device of an annular flange 4 and a locking ring 3 in the opening 2 'of a container 2 is arranged. A sealed sealing arrangement similar in principle but with a sealing plug instead of a valve core is shown in FIG DE 10 2012 007 642 B4 to which reference is hereby incorporated by reference.

For fastening the valve core 1 in the opening 2 'of the container 2 with the fastening device, it is provided that the diameter of the plug body 10 in the lower container-facing portion 10a, which projects into the container 2 through the container opening 2', is less than that of the upper one , container facing away portion 10 b, in which the receiving bores 11, 13 and the radial bores 14, 16 are present. Between both plug body portions 10a, 10b, a circumferential step is formed. Furthermore, the lower container-facing portion 10a has an outer peripheral groove 10c. In this groove 10c engage locking hooks 3a of a locking ring 3, which is arranged between the plug body 10 and the annular flange 4. In this case, the annular flange 4 presses with the sleeve 4b, which extends axially from a flange collar 4a and has a circumferential, inwardly directed curvature and surrounds the lower portion 10a, the locking hooks 3a of the locking ring 3 into the groove 10c of the plug body 10. More specifically this pressure is achieved by a radially inwardly directed curvature of the sleeve 4b when it is pressed into the container opening 2 '. The latching ring 3, in which the latching hooks 3a extend radially inward from the annular disk 3b from the inner circumference, has in the area of the outer circumference also a ringwall 3c which encloses the flange collar 4a, while the annular disk 3b is located between the flange collar 4a and the radial step of the plug body 10 is arranged.

The plug body 10 of the valve core 1 has on the end face 10 ', which faces away from the container 2, two non-central receiving bores 11, 13. In the left-hand mounting bore 11 in the illustration, a retaining ring 24 for a sealing ring, not shown, is arranged for connecting a CO ₂ connection line, not shown, or a connecting pipe. This is inserted before the arrangement of the retaining ring 24 in the formed under the retaining ring 24 annular groove of the receiving bore 11. The receiving bore 11 tapers stepwise to a chamfered bottom, where after a narrowed transition, a cylindrical axial, not centric lower bore portion 12 connects. The shape of the transition from the receiving bore 11 to the lower bore portion 12 with the chamfered bottom ensures, when a gas connection device (for example a carbonic acid backing) is arranged in the receiving bore 11, that the transition lying at the edge of the bottom of the receiving bore 11 is not closed , An obliquely guided receiving bore from the end face 10 'to the lower bore portion 12 is indeed conceivable, but technically much more complicated to implement. The diameter of the plug body 10 in the lower portion 10a depends on the size of the lower bore portions 12, 17 extending there. For space reasons, the axes of the receiving bore 11 and the lower bore portion 12 are offset in the example shown so that the transition therebetween at the edge of the bottom of the receiving bore 11 is present - with different dimensions of the plug body 10 but is also possible that the receiving bore 11 and the lower Bore portion 12 are aligned.

In this lower bore portion 12, a check valve 18 is arranged, which is pressed by a spring 21 against a shoulder which is formed at the transition of the lower bore portion 12 to the narrowed transition. For holding the spring 21, the check valve 18 on the container side facing a diameter-reduced pin portion 18a, which projects into the spring 21, which acts on the paragraph thus formed between the journal portion 18a and piston portion 18b. In the present example, the piston section 18b of the check valve, which can be manufactured as an injection-molded part, has a recess in order to avoid sink marks during the injection molding of the plastic part. At the other end, the spring is supported on the annular end face 25c of a spigot portion 25b of the plug 25 disposed with the spigot portion 25b in the lower bore portion 12, the bore 25a extending through the plug 25 and through the spigot portion 25b extends through the receiving bore 11 and the lower bore portion 12 extending Flow path for CO ₂ in the container 2 continues. The communicating with the lower bore portion 12 bore 25a widens in the example shown from top to bottom, as this way, the plug 15 can be easily removed from the mold during its manufacture.

The return spring 21 of the nozzle part 20 is supported on the corresponding pin portion 25b of the plug 25, but in the example shown in the journal portion 25b a remote from the passage bore 25 receiving bore is provided so that the spring 21 is supported on the shoulder 25c.

According to the differences in diameter of the two lower bore portions 12, 17 and the pin portions 25b of the plug 25 are formed with corresponding different diameters, so that an accidental incorrect installation is not possible. In addition, a riser 26 is arranged in the through hole 25a, which passes through the tap portion 25b, which is arranged in the leading to the nozzle 20 lower bore portion 17, a riser 26, which is in the use of the valve 1 according to the length of the container 2 to just above the bottom of the container 2 extends.

The dispensing valve member 20 is urged against the shoulder 17b forming the dispensing valve seat and the diameter-tapered portion 17a between the upper bore portion 15 and the lower bore portion 17 by the spring 21 received in a container-facing recess provided by the sleeve portion 20b. In the illustrated example, the diameter-reduced portion 17a tapers from bottom to top, so that the sealing seat portion 20a of the nozzle part 20 has a corresponding conical shape. The conical shape allows better flow control when opening the dispensing valve.

If the dispensing valve member 20 down against the spring force from the valve seat 17b, which can with gas (eg. B. CO ₂₎ strung product from the container 2 through the riser 26, the lower bore portion 17, the reduced diameter portion 17a in the upper bore section 15 and from there into the radial bore 16 (Zapfanschlussbohrung) get to the pin a corresponding discharge pipe or pipe (not shown) will be connected.

For the interaction with the actuating pin 19, the dispensing valve part 20 in the sealing seat portion 20 a has a recess which is formed corresponding to a pin portion 19 d at the end of the plunger portion 19 c of the actuating pin 19.

The actuating pin 19 extends from the actuating head 19a, whose surface in the first, upper position or starting position, in Fig. 1 is shown, in the plane of the end face 10 'of the plug body 10 is located, with the adjoining the actuating head 19a piston-like valve portion 19b in the enlarged with respect to the upper bore portion 15 receiving bore 13. The adjoining the valve portion 19b ram portion 19c extends through the upper bore portion 15, wherein the pin portion 19 d protrudes into the recess in the sealing seat portion 20 a of the nozzle part 20. The upper part of the upper bore portion extending axially between the radial bleed port bore 16 and the receiving bore 13 provides the valve seat 15a for the valve portion 19b of the actuating pin 19 for closing the venting valve. In the in Fig. 1 shown initial position is a ventilation of the radial Zapfanschlussbohrung 16 (and the connected outlet pipe / pipe) through the upper radial vent hole 14 via the receiving bore 13 and the upper bore portion 15 instead (flow path a, see. Fig. 7 ), whereby according to the invention the dripping during the pin is prevented. When tapping (flow path b in Fig. 7 ) With the actuating pin 19 in the third position, so that the dispensing valve member 20 is pressed out of the valve seat 17a due to the interaction with the actuating pin 19 is ensured by this interaction that the vent valve is closed, since in this case the valve portion 19b of the actuating pin 19 in the lower Area of the valve seat 15a is located. The second, middle position of the actuating pin 19 with the valve portion 19b in the upper region of the valve seat 15a, in which both flow paths a, b are closed, ensures that the vent valve is closed before the dispensing valve is opened.

For sealing the cylinder-piston-shaped valve portion 19b in the cylindrically shaped valve seat 15a of the upper bore portion 15, a circumferential annular groove is provided in the valve portion 19b, in which a sliding seal 22 is received, which allows the axial movement in the valve seat 15a, but still reliably seals. By means of return spring 21 of the actuating pin 19 is held in the first, upper actuating position, or initial position in which the vent valve is open. The Return spring 21, which is arranged around the valve portion 19b, is supported for this purpose on the rear side of the actuating head 19a and at the bottom of the receiving bore 13, namely around the annular wall 13b formed there, in order to avoid deflection of the spring 21 under load. At the front opening of the receiving bore 13 there is a widened shoulder 13a, in which a radially einkragender retaining ring 23 is arranged, which holds the actuating head 19a and thus the actuating pin 19 in the receiving bore 13.

In Fig. 2 is the invention used in the opening 2 'of a container 2 valve insert 1 shown in the delivery state, in which a protective cap 5 is arranged to protect against dust and contamination of the valve core 1 and as tamper evidence. The protective cap 5 can, if necessary, be designed in such a way that it can not be removed without destruction in order to ensure for the customer that no previous opening has taken place. For this purpose, for example, a tab provided by means of perforations on the jacket wall of the cap can be provided, which must be torn open to open the cap.

In Fig. 3 the protective cap 5 is shown away from the valve core 1, so that a tap fitting, not shown, can be connected to the valve core 1. A suitable for the valve insert dispensing device has correspondingly arranged elements such as gas or CO ₂ connection, outlet pipe and actuator and is designed so that the ventilation hole 14 can communicate with the ambient air. The elements of the tap fitting are designed so that they can be connected to the respective receiving bores 11, 13 and can enter into operative connection with the actuating pin 19, the in Fig. 3 is still in the starting position, the first, upper actuating position, is arranged, in which the vent valve is open and flow path a through the vent hole 4, receiving bore 13, upper bore portion 15 and the Zapfanschlussbohrung 16 is released in an unillustrated outlet pipe of a tap fitting. Dispensing valve and CO ₂ check valve are closed.

With the connection of the valve core 1 to a compressed gas or CO ₂ source via the connection bore 11 and the possibly required opening of a closure of the compressed gas or CO ₂ source, pressurized gas flows through the connection bore 11 and ensures that Opening the check valve 18, as in Fig. 4 shown is, so that the compressed gas (CO ₂ ) flows into the container 2, until there the desired, predetermined pressure is reached and the check valve 18 closes again. Meanwhile, the actuating pin 19 is still released in its initial position in the flow path a (ventilation of the - not shown - outlet pipe) and flow path b (pin) is closed.

After the container 2 has been covered and the check valve 18 is closed, as in Fig. 5 can be seen, the actuating pin 19 is actuated so that it assumes the middle, second operating position in which both the vent valve and the nozzle are closed. Here, the actuating pin 19 is moved only so far down that the valve portion 19b with the Gleitdichtring 22 in the valve seat 15a, that is disposed in an upper region of the valve seat 15a, and the plunger portion 19c of the actuating pin 19 with the pin portion 19d completely into the recess in Dichtsitzabschnitt 20 a of the nozzle part 20 is immersed, but not yet acts.

This ensures that when the actuating pin 19, as in Fig. 6 The valve portion 19b is located with the Gleitdichtring 22 in a lower region of the valve seat 15a, when the nozzle member 20 by the action of the actuating pin 19, which engages with its pin portion 19 d in the recess in the sealing seat portion 20 a, is pushed out of its valve seat 17 a, and so flow path b from the container 2 through the riser 26, the lower bore portion 17, the narrowed portion of the valve seat 17 a through the lower portion of the upper bore portion 15 in the radial Zapfanschlussbohrung 16 and the outlet pipe connected there (not shown). This in Fig. 6 closed check valve 18 opens when needed to allow further pressure gas (CO ₂ ) to flow into the container 2 at pressure drop in the container 2, which is formed during the pin.

When the tapping operation is completed, the actuation of the actuating pin 19 is released, so that it is closed again via the middle position in the flow path b by the nozzle member 20 is pressed back into the valve seat 17 a due to the restoring force of the spring 21 acting thereon, in the upper initial position by the restoring force of the force acting on the actuating pin 19 spring 21 returns, so that the Flow path a is opened for ventilation of the radial Zapfanschlussbohrung 16 and the adjoining outlet pipe, whereby the product residues in the outlet pipe immediately after the tapping can leak and does not dribble slowly from the outlet pipe.

The valve insert according to the invention and the container equipped therewith are not limited to the embodiment illustrated by way of example with reference to the figures. Modifications and modifications of the illustrated embodiment within the scope of the claims defined by the claims are obvious to the person skilled in the art.

LIST OF REFERENCE NUMBERS

1

valve core

10

plug body

10a

lower section

10b

upper section

10c

outer circumferential groove

10 '

container facing away from the front side

11

Mounting hole for CO ₂ connection pipe / pipe

12

Cylinder bore for CO ₂ valve

12a

Valve seat CO ₂ valve

13

Mounting hole for actuating pin

13a

expanded heel for locking ring

13b

rampart

14

ventilation opening

15

Upper hole section for actuating pin

15a

Ventilation valve seat

16

Zapfanschlussbohrung for discharge pipe / pipe

17

lower bore section for nozzle

17a

diameter-tapered section

17b

Paragraph, dispensing valve seat

18

Check valve CO ₂

18a

journal section

18b

piston section

19

Actuator Pin - Ventilation Valve Part

19a

Actuator head / rear spring system

19b

Belüftungsventiiabschnitt

19c

tappet section

19d

journal section

20

Nozzle part

20a

Sealing seat section

20b

Bushing section for spring

21

(Screw) spring

22

Sliding sealing ring

23

retaining ring

24

retaining ring

25

container-side plug

25a

drilling

25b

journal section

25c

spring stop

26

riser

2

container

3

Snap ring for lid connection

3a

Locking ring hook

3b

washer

3c

rampart

4

annular flange

4a

flange collar

4b

domed sleeve

5

protective cap

Claims (11)

Valve insert (1) for placement in an opening (2 ') of a container (2), said valve insert (1) having a plug body (10) with at least two axial bores for providing flow paths into and out of the container (2), wherein each flow path can be opened and closed by means of an actuatable spring-loaded valve,
in which
a first of the axial bores is not centrally disposed and between an upper bore portion (15) and an aligned lower bore portion (17) has a reduced diameter portion (17 a) and the lower bore portion (17) limiting shoulder (17 b), wherein at the upper bore portion (15) is followed by an enlarged diameter receiving bore (13) which extends to an end face (10 ') of the plug body (10),
said plug body (10) having a first radial bore (14) opening into said receiving bore (13) and axially spaced therefrom a second radial bore (16) opening into said upper bore portion (15), and
wherein the valve core (1) comprises a cooperating valve combination of a first valve having a first valve seat (15a) located in the upper bore portion (15) between the receiving bore (13) and the second radial bore (16) and a second one Valve having a second valve seat, which is formed by the shoulder (17b) to the reduced-diameter portion (17a), wherein by means of the cooperating valve combination two flow paths (a, b) are common or alternately closed, wherein - A first flow path (a) from the first radial bore (14) through the receiving bore (13) via the upper bore portion (15) in the second radial bore (16) and a second flow path (b) from the lower bore portion (17) through the diameter-reduced portion (17a) via the upper bore portion (15) into the second radial bore (16) extend. Valve insert (1) according to claim 1,
characterized in that
the first valve is formed by an actuating pin (19) having an actuating head (19a), a valve portion (19b) and a tappet portion (19c) axially movable in the receiving bore (13) and upper bore portion (15) of the first one Valve seat (15 a), is arranged, and
the second valve is formed by a dispensing valve member (20) separate from the actuating pin (19) but engageable with the plunger portion (19c), having a sealing seat portion (20a) axially movable in the lower bore portion (17) and the reduced diameter portion (17a) forming the second valve seat (17b) is arranged
wherein the actuating pin (19) is movable between three actuating positions, wherein - In a first, upper actuating position, wherein the valve portion (19b) in the receiving bore (13) is present and the plunger portion (19c) of the nozzle part (20) spaced, the first flow path (a) released and the second flow path (b ) is closed, and - In a second, central operating position, in which the valve portion (19b) in the first valve seat (15a) is present and the plunger portion (19c) touches the nozzle part (20), the first flow path (a) and the second flow path (b) closed are and - In a third, lower actuating position, wherein the valve portion (19b) is present in the first valve seat (15a) and the dispensing valve member (20) by the interaction with the plunger portion (19c) of the second valve seat (17b) is present, the first Flow path (a) closed and the second flow path (b) is released. Valve insert (1) according to claim 1 or 2,
characterized in that
the stopper body (10) has a further axial bore (11, 12) not centrally arranged for providing a further flow path, wherein in a lower bore section (12) of this further bore (11, 12) a valve (18) extends axially is movably arranged. Valve insert (1) according to at least one of claims 1 to 3,
characterized in that
a return spring (21) is arranged around the valve portion (19b), which is arranged on a rear side of the head portion (19a) and on a shoulder formed between the upper bore portion (15) and the enlarged diameter receiving bore (13) and around a ring wall (13b). supported, which is concentrically formed on the shoulder in the receiving bore (13), and / or the valve portion (19b) has an annular groove with a sliding seal disposed therein (22). Valve insert (1) according to claim 4,
characterized in that
the annular wall (13b) provides a stop for the head portion (19a) in the third operating position. Valve insert (1) according to at least one of claims 3 to 5,
characterized in that
the valve core (1) has a tank-side plug (25) with spigot portions (25b) projecting into the lower bore portions (12, 17), the spine portions (25b) including a stop (25c) for return springs (21) of the spool valve portion (20) and the check valve (18), and wherein bores (25a) through the plug (25) and through the pin portions (25b) continue the flow paths provided by the lower bore portions (12, 17). Valve insert (1) according to claim 6,
characterized in that
in one of the bores (25a) extending through the spigot portion (25b) associated with the lower bore portion (17) leading to the spigot valve member (20), a riser pipe (26) is disposed. Valve insert (1) according to at least one of claims 2 to 6,
characterized in that
the tappet portion (19c) is formed at its end facing the dispensing valve part (20) as a reduced-diameter journal portion (19d), and the sealing seat portion (20a) has a receiving bore corresponding to the journal portion (19d). Valve insert assembly (1) having a valve core (1) for placement in an opening (2 ') of a container (2) and a fastening device for securing the valve core (1) in an opening (2') of the vessel,
the valve core (1) comprising a plug body (10) having at least two axial bores for providing flow paths into and out of the container (2), each flow path being openable and closable by means of an actuatable spring loaded valve, characterized in that Valve insert (1) is a valve core (1) according to at least one of claims 1 to 8, wherein a diameter of the plug body (10) from an upper, container facing away portion (10b) to form a radial step below the radial bore (16) a lower container-facing portion (10a) reduced, in which an outer circumferential groove (10c) is introduced,
and
the fastening device comprises an annular flange (4) with a sleeve (4b) extending axially from a flange collar (4a) and having a circumferential, inwardly directed curvature,
and a latching ring (3), in which an annular wall (3c) extends radially inwardly from the inner circumference of an annular disk (3b) in the axial direction and a ring wall (3c) in the region of the outer circumference,
wherein the sleeve (4b) is arranged around the lower container-facing portion (10a) of the plug body (10) and between the flange collar (4a) and the radial step of the plug body (10), the annular disc (3b) of the locking ring (3) is arranged, and wherein the annular wall (3c) engages the flange collar (4a) and the locking hooks (3a) engage under the bulge of the sleeve (4b) in the outer circumferential groove (10c). Container (2) having a valve insert arranged in an opening (2 ') of the container (2) and providing at least two flow paths which can be opened and closed by means of an actuatable spring-loaded valve into and out of the container (2),
characterized in that
the valve core is a valve core (1) according to at least one of claims 1 to 8. Container (2) according to claim 10,
characterized in that
the valve core (1) is part of a valve core assembly (1) according to claim 9.

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