EP2841350B1 - Bung for a beverage container - Google Patents

Description

The following invention relates to a closure stopper for a beverage container, in particular for a beer keg, to a dispensing device which comprises the sealing stopper and to the stoppered beverage container itself.

It is known to provide beverage containers such as beer kegs, including the so-called Partykegs with a filling volume of usually 5 or 10 liters, with a filling or outlet opening, which is tightly closed during storage of the beverage container and is then provided with a tap device, when the beverage container or barrel is put into use. These outlet openings are provided with a closure, which is usually removed and replaced with a removal device such as an outlet nozzle or a tap when the beverage is to be consumed; Alternatively, closures are also known which form a closure plug and a tap at the same time.

Such a closure is for example from the DE 21 2005 000 063 U1 There is disclosed a closure in the form of a tap or plug for a beverage container such as a beer keg, the main task of which is to reduce the adverse influence of oxygen access into the container interior. This is achieved in that the tap has at least one plastic injection molded part, which is doped with a scavenger. The tap there may be formed with at least two relatively movable parts, by means of which a dispensing opening is closable, wherein at least one of the parts is the scavenger-doped plastic part.

While this closure has the task of keeping oxygen out of the beverage in the vessel, the in DE 10 2007 029 450 A1 revealed stop-fen the task of an overpressure protection: There is also referred to party kegs, which are constructed as three-piece Falzverschlussdosen, with a hull with welded longitudinal seam and bottom and topsoil, which are connected by a fold with the trunk. Against an increase in pressure by CO ₂ development beyond a certain limit beyond an overpressure protection is provided, can escape through the pressure in an unforeseen pressure increase from the container to the outside, before it can come to overuse of the hinge connection or bursting of the container. Therefore, there is disclosed a plug which can be inserted sealingly into an opening of the container and which has a passage which is sealed by a film which forms a seal which yields when a certain pressure is exceeded and releases the passage opening.

Basically, but the further task arises when such plugs are used in a filling opening to protect the edge of the filling opening from corrosion, since such beverage containers are just like the partykegs just usually made of sheet metal - as stated above - and in contact with begin to corrode the drink. On the one hand, this is disadvantageous in terms of taste and, on the other hand, it impairs the secure seating of the closure in the opening.

Other sealing plugs are off DE1233321B and GB775309A known, according to DE1233321B a sleeve forms a circumferential projection of the plug and GB775309A shows a spreader, which is rotated by a book to the outside.

Based on this prior art, the present invention is based on the object to provide an improved sealing plug, which can avoid corrosion at the edge of a filling opening made of corrosive material.

This object is achieved by a closure plug having the features of independent claim 1.

Another object is to provide an improved dispensing assembly which is also corrosion resistant at a fill port edge of a beverage container is more secure.

This object is achieved by the dispensing arrangement having the features of independent claim 10.

Another object, namely the provision of a corrosion-protected beverage container, in particular a beer keg, such as a party keg, is achieved by the beverage container having the features of independent claim 12.

An inventive closure stopper for a beverage container has at least one outer part with an annular flange, which extends into a sleeve, wherein below the annular flange, the sleeve is deformed circumferentially to a bulge. Further, the closure plug has a spreader ring having an annular flange from which extends a plurality of spaced apart L-shaped members downwardly, having a pivot point at the angle of the "L" and whose free ends are formed as hooks. Further, a socket and a rotary cover is provided with a cover plate from which radially inwardly offset a sleeve extends downwardly. Now, in a non-use arrangement of the sealing plug in which the same is not yet inserted into a filling opening of the beverage container, the spreader ring in the outer part pre-positioned and the sleeve protrudes a little way into the spreader ring, the hook pointing radially inward.

By pressing the rotary lid, but without rotating it, an advantageous closure arrangement can now be produced. As a result, the rotary cover, the spreader and the socket are so far absorbed in the outer part, that the hooks of the spreader ring are rotated outwards. Since these have a pivot point at the angle of the "L", they are rotatable or pivotable outwardly, so therefore in the use arrangement, the closure arrangement in which the vessel is merely closed is, or a tap assembly in which the closure plug forms part of a dispensing device may be, the free ends of the hooks facing outward. This is advantageous because the hooks engage in the bulge, which presents itself on the outside as a nose or circumferential projection, which is then pressed in the direction of the underside of the annular flange and also radially deformed, and thus in the gap between the nose and annular flange of the outer part introduced vessel Füllöffnungsrand safely include and can clamp fluid-tight. Thus, after the locking of the plug, the contact of filled medium (beverage) with metal is avoided: Thus, the drink is protected from rust, which otherwise forms in party kegs made of sheet metal.

Preferred embodiments of the sealing plug according to the invention are as follows.

The deformation of the nose to achieve its sealing purpose succeeds particularly well when the outer part is made of plastic, preferably of a thermoplastic elastomer; optionally made of rubber.

In order to easily insert the sealing plug into the filling opening of a vessel, the sleeve of the outer part tapers conically downward with respect to its outer periphery.

Suitably, the closure stopper comprises a device which closes it: For this purpose, a stopper is placed from below, ie in the use arrangement, which has a cover plate from which extends centrally a core, which is spaced from a sleeve by a gap is. This can now be plugged from the bottom of the outer part, and when the rotary cover is removed, it can be easily pressed into the beverage container inside. He sits sealingly and form-fitting on the outer part.

For this purpose, in a further development of the core and the sleeve and the gap are arranged to each other so that the plug on the side facing away from the annular flange of the outer part on the outer part form-fitting sealing can be placed.

Furthermore, the core and the sleeve and the gap are arranged relative to one another in such a way that the core also bears in a form-fitting manner in the sleeve of the rotary cover when it is arranged in the closure plug; In this case, a cross-sectional shape of the core and an inner cross-sectional shape of the sleeve are preferably formed so that they can be brought into rotatable engagement with each other.

It can be provided an elongated or oval cross-sectional shape or another cross-sectional shape of the core, which corresponds to the sleeve of the rotary lid and can be brought into engagement.

The plug may further include side radial vent holes. Corresponding ventilation holes are in this embodiment in the outer part, so that when turning the plug by means of the rotary cover for ventilation purposes, the otherwise offset holes are brought together to coincide and allow the air inlet for the purpose of pressure equalization during tenon.

The bushing is advantageously longer than the spreader ring and has, on the outside, a groove which engages around an inner lower edge of the hook in the closure arrangement. Thus, the spreader ring can be secured and held in position, even if the rotating lid is removed.

Advantageously, the bush for producing the groove be chamfered down the outside. Also at its upper edge, the socket can be chamfered. This embodiment facilitates, for example, the insertion of the sword. The bushing is advantageously made of a solid material such as a non-elastic plastic so as not to be deformed when the rotary cover is released.

In a suitable exemplary embodiment of the sealing plug, the annular flange has on its inner side a innenumfängliche stage through which in a lying below the plane of the Ringflanschoberfläche first level a bearing surface and below in a second plane results in a bearing surface, on each of which the flanges of the rotary cover and of the spreader ring lying below each other, so that a flush, smooth plug surface is created, the outside of the barrel can be seen.

For example, it may be desirable to remove the rotating lid when, after providing the closure assembly while maintaining the disposition of the expansion ring in the remaining cylindrical opening formed by the sleeve, a sword of a dispensing device is to be inserted.

Therefore, in a dispensing arrangement according to the invention, the closure plug according to an embodiment of the invention and further comprising a dispensing device with a sword which extends through the closure plug and at least rests in the socket. Advantageously, in a development of the dispensing arrangement, the sword is fluid-tightly enclosed in the outer part of the sealing plug by an inner circumferential bead of the outer part.

Finally, a beverage container according to the invention with a filling opening which has an edge, the closure plug according to the invention on: The filling opening is closed by this and the edge is fluid-tight from the bulge formed by the bulge of the outer part, the peripheral projection in the direction of the underside of the annular flange of the outer part pressed, framed so that it is protected against corrosion.

Fig. 1

eine perspektivische Ansicht eines Partyfässchens mit im Oberboden vorgesehener Füllöffnung,

Fig. 2

eine Seitenschnittansicht eines erfindungsgemäßen Verschlussstopfens, eingesetzt in eine Füllöffnung,

Fig. 3

eine Seitenschnittansicht eines erfindungsgemäßen Verschlussstopfens, mit herausgezogenem Drehdeckel,

Fig. 4

eine Seitenschnittansicht eines erfindungsgemäßen Verschlussstopfens, mit eingedrücktem Drehdeckel,

Fig. 5

eine perspektivische Seitenschnitt-Explosionsansicht eines erfindungsgemäßen Verschlussstopfens,

Fig. 6

eine perspektivische Explosionsansicht eines erfindungsgemäßen Verschlussstopfens,

Fig. 7a

eine erste perspektivische Schnittansicht des Spreizrings,

Fig. 7b

eine weitere perspektivische Schnittansicht des Spreizrings,

Fig. 8

eine weitere Seitenschnittansicht des erfindungsgemäßen Verschlussstopfens, mit vorpositioniertem Drehdeckel.

These and other advantages are set forth by the following description with reference to the accompanying figures. The reference to the figures in the description is to support the description and the facilitated understanding of the subject. Articles or parts of objects which are substantially the same or similar may be given the same reference numerals. The figures are merely schematic representations of embodiments of the invention. It shows:

Fig. 1

a perspective view of a party cask with provided in the topsoil filling opening,

Fig. 2

a side sectional view of a sealing plug according to the invention, inserted into a filling opening,

Fig. 3

a side sectional view of a sealing plug according to the invention, with pulled out rotary cover,

Fig. 4

a side sectional view of a sealing plug according to the invention, with depressed rotary lid,

Fig. 5

FIG. 2 a perspective side-section exploded view of a sealing plug according to the invention, FIG.

Fig. 6

an exploded perspective view of a sealing plug according to the invention,

Fig. 7a

a first perspective sectional view of the spreader,

Fig. 7b

another perspective sectional view of the expansion ring,

Fig. 8

a further side sectional view of the sealing plug according to the invention, with prepositioned rotary cover.

This in Fig. 1 The beverage container shown is a beer keg 100 or party keg 100 with a filling volume of a few liters. It has in its topsoil a filling opening into which the sealing plug 1 according to the invention can be inserted.

Fig. 2 to 6 show embodiments of the sealing plug according to the invention: As from Fig. 3 can be seen, a closure plug 1 according to the invention from the outside inwards first on an outer part 4, which - in relation to its positioning in the use in the beer barrel 100 - on its upper side has an annular flange 41 which extends into a sleeve 42 which tapers conically downward with respect to its outer periphery. The sleeve 42 is also in the Figures 5 and 6 good to see. The annular flange 41 has on its inner side on a innenumfängliche step, through which in a lying below the plane of the Ringflanschoberfläche first level a bearing surface 41 'and below in a second plane a bearing surface 41 "results.

Below the annular flange 41, the sleeve 42 is deformed circumferentially to a supernatant, where it forms a quasi nose 43, the shoulder 43 'points in the direction of the underside of the annular flange 41. Thus, a groove is formed between the shoulder 43 ', the nose 43 and the underside of the annular flange 41, which is just dimensioned so that they the edge of a beverage container opening, such as the edge 102 to the filling opening 101 of the Partykegs 100 in Fig. 4 , intervenes. As if by hand Fig. 4 is further explained, the nose 43 is formed so that the groove edge 102 of the filling opening 101 of the Partykegs 100 (shown only in the neck) at the cutting edge so bordered that the edge 102 is protected from corrosion.

Especially with vessels made of sheet metal, an unprotected and thus corrosion-prone sheet edge is created by the introduction of the filling opening 101, which is now sealingly received by the closure plug 1 and the nose 43 and thus advantageously preserved from corrosive beverage contact.

• In dem Außenteil 4, das aus einem Kunststoff gefertigt ist um entsprechend deformierbar zu sein, bevorzugt aus einem thermoplastischen Elastomer wie aus Gummi, ist der Spreizring 3 positioniert, siehe Fig. 3 . Dieser hat einen Ringflansch 31, von dem aus sich eine Vielzahl näherungsweise L-förmiger Elemente 32 nach unten erstreckt, deren freie Enden als radial nach innen weisende Haken 33 ausgebildet sind. Die L-förmigen Elemente 32 sind etwas voneinander beabstandet und verjüngen sich von oben nach unten bis zu den Haken 33 hin in der Breite. Die L-förmigen Elemente 32 sind so beschaffen, dass sie einen Drehpunkt D im Winkel der "L" ausbilden, siehe Figuren 7a und 7b, und so nach außen drehbar bzw. schwenkbar sind, so dass in der Benutzungsanordnung, die eine Verschlussanordnung oder eine Zapfanordnung sein kann, die freien Enden der Haken 33 nach außen weisen.

This is achieved by the following design of the sealing plug 1:

• In the outer part 4, which is made of a plastic to be correspondingly deformable, preferably made of a thermoplastic elastomer such as rubber, the spreader ring 3 is positioned, see Fig. 3 , This has an annular flange 31 from which extends a plurality of approximately L-shaped elements 32 down, the free ends are formed as radially inwardly facing hooks 33. The L-shaped elements 32 are something spaced from each other and taper from top to bottom to the hook 33 in the width. The L-shaped members 32 are adapted to form a pivot point D at an angle of "L", see Figs. 7a and 7b, and are thus rotatable outwardly, so that in the assembly of use, a closure assembly or a Zapfanordnung may be the free ends of the hooks 33 facing outward.

The design of the expansion ring is off Fig. 7a and 7b clearly: There, the Spreizring 3 is shown in the non-use arrangement, ie without his function in the closure plug 1 exercises. Only when pressure is exerted from the inside of the spreader 3, the hooks 33 are pivoted outwardly and then form the outwardly facing projections, which in the transfer to the user assembly (as described below), see, for example. Fig. 4 , inside are brought into engagement with the sleeve 42 in the region of the nose 43. Then, the hooks 33 engage underneath the circumferential nose 43 and push it radially outwards, whereby it is applied as fluid-tight as possible around the opening edge 102 of the filling opening 101 of the beer keg 100. In the region of the nose 43, therefore, the sleeve 42 is formed on the inside so that a "Spreizkäfig" is formed inside, see also Fig. 8 , which receives the Spreizring 3.

The annular flange 31 has a width which corresponds precisely to the depth of the support surface 41 "in the second plane of the outer part 4, on which it comes into abutment in the user equipment, that the spreader 3 does not slip down and is held in its desired position ,

Next comes within the Spreizringes 3 a socket 2, see Fig. 2 , To lie, which is made of solid material, such as a hard plastic, and the bottom is circumferentially chamfered on the outside and top inside. The upper chamfer serves to facilitate the insertion of a sword when the dispensing assembly is made.

The sleeve 2 has a groove 22 slightly above the lower chamfer 23 so that the groove 22 and the chamfer 24 also form a nose 25. In the use arrangement, the bushing 2, which is longer than the spreader ring 3, can thus stabilize it on the inside, ensure it and ensure uniform application of force to the L-shaped elements 32 during the transfer from non-use to the use arrangement. Suitably, the sleeve 2 is just so much longer than the height of the spreader 3, that at the aligned upper edges of the two components 2.3, the nose 25 engages under the hooks 33 pivoted outwardly.

In order to transfer the closure plug 1 from its non-use into a user arrangement in which it reliably closes the beer keg 100, the sealing plug 1 is first introduced into the filling opening 101 (also called a bunghole) of the beer keg 100, with the soft lug 43 below the annular flange 41 offers the greatest insertion resistance and therefore the diameter of the outer part 4 around the nose 43 is only slightly larger (in the mm range, approximately 0.5 to 2.2 mm, more preferably 0.8 to 2.0 mm) than the diameter the filling opening 101. Thus, the sealing plug 1 can be introduced comparatively easily and without tools into the filling opening 101. The material of the outer part 4 may suitably have a Shore hardness in the range of 55 to 90, preferably by 70, in order to be sufficiently soft for the desired deformation.

• der Buchse 2, die in den Spreizring 3 eingeführt ist, ohne jedoch die Haken 33 nach außen zu schwenken, und
• dem Spreizring 3, der die Buchse 2 umgibt und der seinerseits von dem
• Außenteil 4 umgeben wird, ohne dass bereits innenseitig Druck auf die Nase 43 ausgeübt wird,

vorpositioniert vor.The rotary cover 5 is in the arrangement consisting of

• the sleeve 2, which is inserted into the spreader 3, but without the hooks 33 to pivot outwards, and
• the spreader ring 3, which surrounds the sleeve 2 and in turn of the
• Outer part 4 is surrounded, without already on the inside pressure on the nose 43 is applied,

pre-positioned before.

When inserting the sealing plug with a rotating lid for the purpose of closing the vessel 100 (locking), the sealing plug initially goes into the filling opening 101 easily and only when the interventions between the expanding ring 3, bushing 2 and outer part 4, an increased force required. The sealing plug further comprises the plug 6, which is described below.

In the above arrangement, therefore, the outer part 4 is the longest component that receives the bush 2 and the spreader 3 completely in itself.

The rotary cover 5 consists of a cover plate 54, from which radially inward offset a sleeve 51 extends downwardly. Suitably, the outer circumference of the sleeve 2 is matched to the spreader ring 3 and therefore so large that the sleeve 2 displaces the first still inwardly facing hook 33 and pivots outwards; In this case, the sleeve 2 slips down so that the groove 22 of the sleeve 2 engages around the inner lower edge of the now outwardly turned hook 33. The outwardly turned hooks 33 press against the inner wall of the sleeve 42 of the outer part 4 in the region of the nose 43 and displace the plastic material, which is preferably a chemically inert to the drink, food-compatible rubber, as soft as possible, and thus press the nose 43 at and around the edge 102 of the filling opening 101. Thus, the edge 102 of the usually made of sheet metal and thus at beverage contact corrosion endangered beverage container or beer keg 100, which is strong in standard barrels by 0.6 mm, embraced by the nose 43 and so against corrosion protected.

When the rotary lid 5 is fully inserted, its cover plate 54 is located, as can be seen Fig. 4 , with its edge on the support surface 41 'of the outer part 4. The rotary cover has a step here on its sleeve 51 (not fundamentally necessary, another embodiment is also possible), which is tailored to the shape of the plug 6: The rotary cover 5, as he is in about Fig. 4 . 5 and 6 can be suitably made of the illustrated cover plate 62, from which extends a central, presently solid core 63 away, which is surrounded by a gap 61 spaced by a sleeve. Core 63, sleeve 61 and gap are formed so that the plug 6 from below, so arranged on the barrel side, are plugged onto the sealing plug 1 and this form-fitting and thus tightly seals. In this case, the plug 6 is preferably seated so that when the vessel is not to be ventilated, the bore 61 'is present in the sleeve 61 with the bore present in the outer part 4, the offset may be 90 °, but may also be chosen differently ; depending on the arrangement and number of the respective holes. The core 63 comes to lie with its outer wall positively with play on the inner wall of the sleeve 51 of the rotary cover 5, so that the plug can be rotated.

The core 63 of the plug 6, as shown here by way of example, may have a deviating from a circular shape, for example elliptical, elliptical flattened or bifilar cross-section, which is adapted to the shape of the inner cross section of the rotary cover 5 in the lower portion 52, so that the rotary cover 5 when pressing with the core 63 forms the positive connection.

In principle, other geometries are possible than the said elliptical, elliptical flattened or biface-like cross-sectional shape, as long as they allow the rotary cover 5 can be pressed to the required depth, in which the spreader 3, the nose 43 in the desired manner sealingly the edge 102 of the beer barrel 100 brings to the plant.

Fig. 8 shows the arrangement of the components which form the closure plug 1, moreover, in a "non-use" or "Vorpositionierungsanordnung": Here, the rotary cover is not yet pressed, but so in the Bush 2 pre-positioned that he is prepared for it. He is doing right at the core 63 of the plug 6, which is inserted from below onto the outer part 4. The sleeve 2 already protrudes a little way into the spreader ring, but does not yet cause the hooks 33 to rotate outwards; These still point radially inwards. Incidentally, these hooks 33 can also be formed differently, provided they fulfill the described function. The spreader 3 is so far in the outer part 4 also pre-positioned before. The annular flange 31 of the Spreizrings 3 rests on the lower step 41 "of the annular flange 41 and is held by this.

Turning the rotary lid 5 for ventilation can be done with a handle, which is pivotally provided here and inserted into the groove 53 in the lid plane. Instead of the handle, other possibilities known to those skilled in the art may be provided for the user to be able to grasp and turn the rotary cover 5. For example, a differently shaped groove could be provided, which could be engaged with a coin for turning.

After arranging the sealing plug 1 in the filling opening 101 of the drum, the rotary cover 5 can be pulled out of the sealing plug arrangement again, without impairing its sealing function, which is exerted by the nose 43 on the edge 102 of the beverage container 100. When the rotary lid 5 is removed, a dagger 110 may be inserted into the remaining cylindrical opening formed by the sleeve 2 as part of a tap assembly or a tap (not figuratively); see for example Fig. 2 ,

On the other hand represents Fig. 4 Incidentally, a "closure arrangement" of the sealing plug 1, in which the beer keg 100 or another beverage container is securely closed, Fig. 3 and 2 show "Zapfanordnungen" in which the sealing plug 1 in a sealing manner in the filling opening 101 of the beer barrel 100 without rotating lid 5 and instead with inserted sword 110 is shown.

It should be noted that the closure plug 1 does not necessarily have to be such that he can take a sword 110: Since the known Partykegs may optionally have a classic tap, which is used on the barrel circumference, the stopper 1 in this case be provided to close only the filling opening 101. Then, the stopper 1 of the ventilation can be used when the rotary lid 5, the stopper 6 is positioned during rotation so that its holes 61 over the holes 4 (not shown figuratively) come to rest.

When the plug 1 is part of the dispensing arrangement, it may, as Fig. 2 It can also be seen that the outer part 4 has an inside circumferential bead 44 - not necessarily required for all embodiments of the invention), the inner circumference of which just corresponds to the outer periphery of the sword 110, that this is covered in a sealing manner.

When the sword 110 is inserted into the stopper 1, the stopper 6, which is also made of food grade material and chemically inert with respect to the beverage, is forced into the interior of the vessel 100.

The stopper 1 forms insofar as the rotating lid 5 has been removed, with the sword 110 and the corresponding handling device for conveying the beverage, the dispensing device.

Claims (12)

1. Closing plug (1) for a beverage container (100), comprising:

   - an outer part (4) including an annular flange (41) which extends in a sleeve (42) which is circumferentially deformed below the annular flange (41) to obtain a bulge (43),

   - a spreader ring (3) including an annular flange (31) starting from which a plurality of L-shaped elements (32) extend in downward direction, said L-shaped elements (32) being spaced apart from each other and having a pivot point (D) at the angle of the "L", and the freed ends of said L-shaped elements (32) being designed as hooks (33),

   - a bushing (2),

   - a rotary cover (5) which includes a cover plate (54) starting from which a sleeve (51) extends in downward direction in such a manner that it is offset in a radially inward direction,

   wherein
   when the closing plug (1) is in an arrangement of non-use, the spreader ring (3) is prepositioned in the outer part (4), the bushing (2) partially projects into the spreader ring (3), the rotary cover (5) is prepositioned in the bushing (2), and the hooks (3) are arranged in a radially inward direction, and
   wherein
   a closing arrangement can be provided by the rotary cover (5), in which the rotary cover (5), the spreader ring (3) and the bushing (2) are received by the outer part (4) to such an extent that the hooks (33) of the spreader ring (3) are turned outwards and engage the bulge (43), whereby a circumferential projection that is formed by the bulge (43) is provided such that it is pressed in the direction towards a bottom side of the annular flange (41).
2. The closing plug (1) according to Claim 1,
   characterised in that
   the outer part (4) consists of a plastic material, preferably of rubber, more preferably of thermoplastic elastomer.
3. The closing plug (1) according to Claim 1 or 2,
   characterised in that
   the closing plug comprises a plug (6) which includes a cover plate (62) starting from which a core (63) extends centrally, said core (63) being surrounded by a sleeve (61) spaced apart therefrom by a gap.
4. The closing plug (1) according to at least any one of the preceding claims, characterised in that
   the sleeve (42) of the outer part (4) is conically tapered in downward direction with respect to its outside circumference.
5. The closing plug (1) according to Claim 3 or 4,
   characterised in that
   the closing plug comprises on its sleeve (61) at least one hole (61') which can be made congruent with at least one hole provided on the sleeve (42) of the outer part (4).
6. The closing plug (1) according to Claim 4 or 5,
   characterised in that
   the core (63) and the sleeve (61) and the gap are arranged in relation to each other such that the plug (6) can be put onto the outer part (4) on the side facing away from the annular flange (41) of the outer part (4) such that it is sealing in a form-locking manner.
7. The closing plug (1) according to any one of Claims 3 to 6,
   characterised in that
   the core (63) and the sleeve (61) and the gap are arranged in relation to each other such that the plug (6) can be put onto the outer part (4) on the side facing away from the annular flange (41) of the outer part (4) such that it is sealing in a form-locking manner and that the core (63) rests in the sleeve (51) of the rotary cover (5) in a form-locking manner, wherein preferably
   a cross-sectional shape of the core (63) and an inner cross-sectional shape of the sleeve (51) are formed, preferably linearly or ovally, in such a manner that they can be brought into rotary engagement with each other.
8. The closing plug (1) according to any one of Claims 1 to 7,
   characterised in that
   the bushing (2) is longer than the spreader ring (3) and includes a groove (22) on its outer circumference, the groove (22) engaging around an inner lower edge of the hooks (33), when being in the closing arrangement.
9. The closing plug (1) according to any one of the preceding claims,
   characterised in that
   the rotary cover (5) can be removed from the closing plug (1) after the closing arrangement has been provided while the arrangement of the spreader ring (3) is maintained and that, in particular, a rapier (110) of a tapping device can be introduced into the remaining cylindrical opening that is formed by the bushing (2).
10. A tapping arrangement, comprising a closing plug (1) according to any one of Claims 1 to 9 and a tapping device with a rapier (110),
    wherein the rapier (110) extends through the closing plug (1)..
11. The tapping arrangement according to Claim 10,
    characterised in that
    the rapier (110) is comprised in the outer part (4) of the closing plug (1) by a bead (44) of the outer part (4) on the latter's inner circumference in a fluid-tight manner.
12. A beverage container (100) having a filling opening (101) which includes an edge (102),
    characterised in that
    the filling opening is closed by a closing plug (1) according to at least any one of Claims 1 to 9, wherein the edge (102) is enclosed in a fluid-tight manner by the circumferential projection that is formed by the bulge (43) of the outer part (4) and is provided such that it is pressed in the direction towards the bottom side of the annular flange (41) of the outer part (4).

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