EP3105170B1 - Tapping head for a beverage keg - Google Patents

Description

The invention relates to a dispensing head for a beverage keg, in particular beer keg, which has a valve head with a spring-loaded valve disc, with a housing, a connecting element for securing the housing to the valve head of the beverage keg, an inlet formed on the housing for connecting a propellant gas line, in the Housing movably mounted plunger, which contains a riser and opens by pressing into the valve head, the spring-loaded valve disc, an output for connecting a beverage line and an actuating mechanism for actuating the plunger.

Such tapping heads for tapping beverages by means of propellant gas from a keg, in particular a keg (English keg "small keg") are known (see, for example EP 0 294 095 A1 ).

A keg is a reusable barrel made of stainless steel. It has on its top a centrally located valve, the so-called keg head. On this a suitable tap head can be mounted by means of the propellant gas (eg carbon dioxide) introduced from a separate container into the barrel and thus standing under pressure from the barrel can be promoted to the tap. To quickly mount the tap head, the keg head is usually provided with a flange on which the tap head, which has a matching receptacle with undercut, is slid sideways. In the keg head an annular valve disc is arranged, which is pressed by a compression spring in the closed position of the valve. The valve disc surrounds with little play the upper end of a rising to the bottom of the beverage barrel riser, wherein the upper end of the tube is closed by a circular disc which projects radially relative to the tube and defines a circumferential sealing surface with respect to the circular disc. Near below the disc, the riser has through holes for the Flow of the pressed out by means of the propellant gas from the barrel drink. So that the propellant gas generating an overpressure can enter the barrel, the annular valve disk is pressed into the keg head against the force of the compression spring by means of a plunger displaceably mounted in the tap head. The plunger is tubular. He has at its lower, the annular valve disc facing the end of a diameter extension, the inner diameter is greater than the diameter of the circular disc, which is attached to the upper end of the riser used in the barrel. The upper end of the plunger is designed as a connection for a beverage line leading to the dispensing system. The propellant gas passes through a formed on the housing of the dispensing nozzle and a top sealed, limited by the housing and the plunger annulus to the keg head. For actuating the plunger, a hand lever is provided, which has a fork-shaped portion, with which it is pivotally mounted on the housing of the tap head (see. EP 0 294 095 A1 such as EP 0 521461 A2 ).

Furthermore, generic dispensing heads are known which are screwed onto the keg head. US 2 638 914 A discloses such a dispensing head according to the preamble of claim 1. Despite the hand lever, the applied force for actuating the plunger of a conventional tap head of the above type is high. Furthermore, known tap heads of the type mentioned above require a complicated locking of the hand lever or plunger in the depressed Zapfstellung to prevent accidental return of the plunger in its upper or retracted position by the compressed compression spring of the keg head.

The invention has for its object to provide a tap head of the type mentioned, which requires considerably less force to its operation than conventional tap heads. At the same time such a dispensing head should be inexpensive to produce.

This object is achieved by a tap head with the features specified in claim 1. Preferred and advantageous embodiments of the dispensing head according to the invention are specified in the subclaims.

The tap head according to the invention is characterized in that its actuating mechanism is designed as a rotating mechanism which has a helical gear and a handwheel connected to the plunger and the helical gear.

The tap head according to the invention can be produced inexpensively and requires for the actuation of the plunger against the spring force of the valve head only relatively little force. Due to the helical gear, the tap head according to the invention can be operated much easier than a conventional tap head with lever mechanism. In addition, the helical gear of the dispensing head according to the invention requires no additional device for locking the plunger in its lower, the spring-loaded valve disc opening position. The helical gear of the dispensing head according to the invention may preferably have a self-locking thread, for example a trapezoidal thread.

The diameter of the handwheel is preferably equal to or greater than the diameter of the valve head (keg head). A correspondingly large handwheel diameter contributes to a low expenditure of force and thus to an easy handling of the tap head. With regard to compact dimensions of the tap head and easy operability of the same, it is on the other hand favorable if the diameter of the handwheel according to a preferred embodiment is equal to or smaller than the diameter of the connectable with the keg head housing foot. The tap head according to the invention is characterized in that the liquid outlet (beverage outlet) is arranged on the housing below the hand wheel, wherein the plunger has a transverse passage opening into the riser channel, which in an upper position of the plunger is arranged sealed and offset from the liquid outlet, and in a lower position of the plunger, in which it opens the spring-loaded valve disc, is arranged in register with the liquid outlet. This embodiment allows an execution of the tap head in a compact design and an optimal position of the handwheel in terms of ergonomic accessibility and ease of use. The axis of rotation of the handwheel preferably runs parallel or coaxial to the longitudinal central axis of the plunger.

The transition of the riser channel in the transverse passage is formed rounded according to a further embodiment of the invention. The transition thus resembles a pipe bend. The rounding simplifies the mechanical cleaning of the tap head, in particular the plunger, for example by means of sponge balls, which are passed or transported for cleaning purposes by the beverage line and the tap head.

A further advantageous embodiment of the dispensing head according to the invention provides that the propellant gas inlet is provided with a valve whose movable valve body is associated with a control surface formed on the plunger, wherein the valve body in a direction of the valve head of the beverage barrel directed movement of the plunger with the control surface in contact comes and is moved from a closed position to an open position.

In this context, a further advantageous embodiment of the dispensing head according to the invention provides that the control surface is designed such that the valve body is moved from the closed position to the open position only when the transverse passage of the plunger is arranged in partial overlap with the liquid outlet. This embodiment ensures that the propellant gas inlet is always closed simultaneously when closing the liquid outlet (beverage outlet).

The housing and / or the plunger and / or the hand wheel of the dispensing head according to the invention are preferably made of plastic. As a result, the material and manufacturing costs of the dispensing head compared to conventional, made of metal dispensing heads can be significantly reduced. In addition, the weight of the dispensing head is considerably reduced by the use of plastic instead of metal, which is particularly advantageous in terms of handling and sending the dispensing head.

According to a particularly preferred embodiment of the dispensing head according to the invention whose housing and plunger are made of transparent or transparent plastic. The dispensing head designed in this way makes it possible to visually inspect (inspect) the hygiene or soiling state of the dispensing head without having to dismantle it for this purpose.

A further advantageous embodiment of the dispensing head according to the invention is characterized in that the housing between the serving to attach the housing to the valve head of the beverage keg connecting element and the propellant gas inlet serving as a predetermined breaking point constriction. By this configuration it is ensured that the tapping head mounted on the beverage barrel breaks in case of accidental breakage damage by a correspondingly strong impact action so that the plunger or its fractions are solved and thus the spring-loaded valve of the beverage keg can close automatically.

A further preferred embodiment of the dispensing head according to the invention provides that the plunger is provided on its lateral surface, below the transverse passage, with a seal which seals in the upper position of the plunger, the transverse passage with respect to the liquid outlet. As a result, a reliable seal of the liquid outlet can be achieved if the tap head must be removed from the beverage barrel head.

The helical gear of the dispensing head according to the invention comprises, according to an advantageous embodiment, a threaded sleeve having an internal thread whose internal thread is in engagement with an external thread formed in the lateral surface of the housing. This makes it possible to realize a compact and smooth-running helical gearbox. The handwheel is preferably torsionally rigid with the threaded sleeve and rotatably connected to the plunger, while the plunger is also axially fixed to the handwheel. The external thread of the tap head housing is, for example, three-flighted, preferably at least four-way.

A further advantageous embodiment of the dispensing head according to the invention is characterized in that the liquid outlet for connection of a beverage line and the propellant gas inlet for connection of a propellant gas line are arranged on the same side of the housing. As a result, a space-saving installation of beverage line and LPG is possible.

According to a further embodiment of the dispensing head according to the invention, the connection of the handwheel with the threaded sleeve and the plunger is designed so that it solves the case of a caused by mechanical impact on the handwheel breakage of the handwheel of the threaded sleeve by holding a snap ring holding portion of the handwheel tearing off the remaining part of the handwheel and / or a region of the handwheel which surrounds a flange nut bolted to the plunger breaks off from the remaining part of the handwheel, so that the plunger automatically moves from its lower position, in which it opens the spring-loaded valve disk, due to the spring action is moved to its upper closed position. As a result, a reliable self-locking of the tap head is achieved in the event of a possible, caused by mechanical abortion of the handwheel. In particular, this ensures that the propellant gas inlet is automatically closed in such a case.

Fig. 1

einen erfindungsgemäßen Zapfkopf zum Zapfen eines Getränks aus einem Fass (Keg), z.B. Bierfass, mittels Treibgas, in einer Seitenansicht;

Fig. 2

den Zapfkopf aus Fig. 1 in einer axialen Schnittansicht entlang der Schnittlinie A-A in Fig. 1;

Fig. 3

den Zapfkopf gemäß Fig. 1, wobei dessen Handrad nach unten gedreht und dementsprechend der Stößel aus dem Gehäuse nach unten vorsteht;

Fig. 4

den Zapfkopf aus Fig. 3 in einer axialen Schnittansicht entlang der Schnittlinie B-B in Fig. 3;

Fig. 5

den Zapfkopf aus Fig. 1 in Verbindung mit einem Getränkefasskopf, in einer Seitenansicht;

Fig. 6

den Zapfkopf aus Fig.1 in Verbindung mit einem Getränkefasskopf, wobei das Handrad und eine damit verbundene Gewindehülse in Seitenansicht dargestellt sind, während im Übrigen das Gehäuse und der Stößel des Zapfkopfes sowie der Getränkefasskopf in einer Axialschnittansicht gemäß Fig. 2 gezeigt sind; und

Fig. 7

den Zapfkopf mit dem Getränkefasskopf gemäß Fig. 6, wobei das Handrad nach unten gedreht und dementsprechend der Stößel in den Getränkefasskopf hineinragt.

The invention will be explained in more detail with reference to a drawing illustrating an exemplary embodiment. Show it:

Fig. 1

a dispensing head according to the invention for dispensing a beverage from a keg, eg beer keg, by means of propellant, in a side view;

Fig. 2

the tap head off Fig. 1 in an axial sectional view along the section line AA in Fig. 1 ;

Fig. 3

according to the dispensing head Fig. 1 with its handwheel turned down and correspondingly the plunger protruding downwards from the housing;

Fig. 4

the tap head off Fig. 3 in an axial sectional view along the section line BB in Fig. 3 ;

Fig. 5

the tap head off Fig. 1 in conjunction with a beverage barrel head, in a side view;

Fig. 6

the tap head off Fig.1 in conjunction with a beverage barrel head, the handwheel and an associated threaded sleeve are shown in side view, while otherwise the housing and the plunger of the dispensing head and the beverage barrel head in an axial sectional view according to Fig. 2 are shown; and

Fig. 7

the tap head with the beverage barrel head according to Fig. 6 , With the handwheel turned down and accordingly protrudes the plunger in the beverage barrel head.

The tap head 1 shown in the drawing is in a conventional manner by means of undercut over a range of about 180 ° of the housing circumference Edge 2 mounted on a beverage keg (not shown) by being pushed laterally on the flange 3 of a valve disposed on the top of the barrel valve, the so-called keg head 4 (see. Figures 5 . 6 and 7 ).

The keg head 4 is formed as a hollow cylinder. He is provided with a riser 5, which extends to the bottom of the beverage barrel, eg beer keg. The riser 5, of which in the Figures 5 . 6 and 7 only an upper portion is shown, is connected via a radial projections 5.1 having flange 5.2 detachably connected to the cylindrical socket 4.1 of the keg head. The nozzle 4.1 has for this purpose at its lower edge axially extending slots 4.2, which are widened at its upper end in the circumferential direction. The extension 4.3 of the respective slot 4.2 is longer than the slot width measured in the circumferential direction and has at its lower edge a shoulder with an axially upwardly projecting edge section 4.4. In the manner of a bayonet closure, the radial projections 5.1 of the riser flange 5.2 are fixed to the axially projecting edge sections 4.4 (cf. Figures 5 and 6 ).

The riser 5 has at its upper end a closed circular disc 5.3 (plate) which protrudes radially relative to the outer circumference of the riser pipe 5. The upper end of the riser pipe 5 is surrounded by an annular valve disk 6, which has on its inner circumference a circumferential shoulder 6.1, which rests against the underside of the radially projecting edge of the circular disk 5.3 or abuts. The inner circumference of the keg head flange 3 is opposite to the inner diameter of the cylindrical nozzle 4.1 and thus forms a peripheral stop 3.1 for the valve disc 6, which is inserted through a pressure in the neck 3, the riser 5 surrounding compression spring 7 against the radially inwardly projecting stop 3.1 is pressed.

In the connectable with the keg head 4 foot 8.1 of the tap head housing 8, an annular seal 9 is inserted, which bears in the assembled state of the tap head 1 sealingly on the upper side of the flange 3 of the keg head 4 ( Fig. 7 ). The Seal 9 is fixed by means of an annular clamping element 10 on the inside of the housing foot 8.1. For this purpose, the seal 9 has a flange or collar 9.1, which engages positively in an upper-side circumferential shoulder 10.1 of the clamping element 10. The seal 9 is dimensioned so that it protrudes slightly in the assembled state against the underside of the clamping element 10 (see. Fig. 2 ). The clamping element 10 and the housing foot 8.1 are designed in the manner of a bayonet closure. The clamping element 10 is provided on its outer circumference with projections 10.2, which are associated with the housing foot 8.1 formed recesses or window-like openings 8.2. The recesses or window-like openings 8.2 each have a section 8.21 with a substantially extending in the circumferential direction of the housing 8 extension 8.22, in which a nose-shaped portion 10.21 of the recess or opening 8.22 associated projection 10.2 after rotation of the inserted into the housing foot 8.1 clamping element 10 engages (see. Figures 1 and 2 ).

The tap head 1 has in its housing 8 a movably arranged in the axial direction plunger 11, by means of which the annular valve disc 6 of the keg head 4 can be pressed against the force of the compression spring 7 in the nozzle 4.1 of the keg head 4. The plunger 11 has at its lower end a bell-shaped extension 11.1, the inner diameter of which is greater than the diameter of the upper-side circular disc 5.3 of the riser pipe 5 held in the keg head. The bell-shaped extension 11.1 of the plunger engages upon depression of the valve disc 6, the upper end of the riser 5. The riser 5 has a circumferential shoulder 5.4, which limits the downward displacement of the valve disc 6 along the riser pipe 5 as a stop. The thickness of the valve disc 6 and the distance of paragraph 5.4 from the radially projecting lower edge of the circular disc 5.3 (closing plate) are dimensioned so that the arranged below the disc 5.3 through holes 5.5 of the riser 5 open radially into the bell-shaped extension 11.1 of the plunger 11, if the valve disc 6 pressed down on the shoulder 5.4 is applied.

Propellant gas, for example CO ₂ , which is used for tapping the drink located in the barrel flows when the plunger 11 presses the valve disc 6 to the paragraph 5.4, formed by a formed on the housing 8 of the dispensing head 1 propellant gas inlet 12 through the housing 8 and the outside of the plunger 11 limited annular space 13 in the nozzle 4.1 of the keg head 4, where the propellant gas passes through the annular gap between the outer periphery of the valve disc 6 and the inner circumference of the nozzle 4.1 and located above the riser flange 5.2 through holes 4.11 of the nozzle 4.1 for Beverage mirror arrives in order to displace this towards the drum base.

In order to optimize the sealing effect of the seal 9 used in the housing foot 8.1, this has on its inner circumference below a circumferential shoulder 9.2, against which the plunger 11 with a molded on the outer catch of its bell-shaped extension 11.1 flange 11.2 suppressed (see. Figures 2 . 5 and 6 ). Since the ram flange 11.2 would shut off the propellant gas flow into the barrel when the seal 9 is tightly engaged, the ram flange 11.2 is provided with a plurality of axial passage openings 11.3, which then also pass the propellant gas into the neck 4.1 and thus in the direction of the liquid in the barrel ensure that the plunger flange 11.2 presses the gasket 9 against the flange 3 of the keg head (valve head) 4.

For actuating the plunger 11, the tap head 1 is provided with a rotating mechanism which comprises a helical gear with a handwheel 14.

The helical gear is constructed from a male thread 8.3 arranged at the upper end of the housing 8 and a threaded sleeve 15 having an internal thread 15.1. The external thread 8.3 is executed in the illustrated embodiment four ways. But it could also be carried out five or six times. Furthermore, it can be seen that the intermeshing threads 8.3, 15.1 are designed as trapezoidal thread. The handwheel 14 is torsionally rigid with the threaded sleeve 15 and rotatably connected to the plunger 11. For this purpose, a hollow-cylindrical socket 14.1 is formed on the hand wheel 14 on the underside, the outside of the threaded sleeve 15 encloses and rotatably connected to this by a latching connection 16. The plunger 11 has at its upper end a bolt-shaped threaded head 11.4, onto which a flange nut 17 is screwed, which is positively received in a circumferential shoulder 14.21 having through hole 14.2 of the handwheel 14 with radial and axial play. The plunger 11 is thus axially fixed to the handwheel 14. In addition, the plunger 11 is secured against rotation with respect to the tubular housing 8 in the same.

Furthermore, the plunger 11 includes a riser channel 11.5, which opens at the lower end of the plunger, namely in the bell-shaped extension 11.1 and extends coaxially to the longitudinal center axis of the plunger 11. The riser channel 11.5 does not open axially at the upper end of the plunger 11, but extends to a transverse passage 11.6, which opens on one side on the lateral surface of the plunger 11. The transverse passage 11.6 of the plunger extends substantially radially and is disposed below the threaded sleeve 15 at an axial distance from the same. The riser 11.5 is rounded in the cross passage 11.6 over.

The transverse passage 11.6 of the plunger 11 is associated with a formed in the wall of the tubular housing 8 liquid or beverage outlet 8.4. The liquid outlet 8.4 is formed as a connecting piece with external thread 8.5 and preferably integrally formed on the housing 8. The liquid outlet (connecting piece) 8.4 is arranged below the hand wheel 14, below a serving as a stop for the threaded sleeve 15 Federal 8.6 of the tubular housing 8. The liquid outlet 8.4 for connecting a beverage line and the propellant gas inlet 12 for connecting a propellant gas line are on the same Side of the housing 8 is arranged.

In the upper position of the plunger 11 whose transverse passage is sealed 11.6 and offset relative to the liquid outlet 8.4 arranged (see. Figures 2 and 6 ), while the transverse passage 11.6 in the lower position of the plunger 11, in which the same spring-loaded valve disc 6 by depressing into the nozzle 4.1 the keg head 4 opens, is arranged in overlap with the liquid outlet 8.4 (see. Fig. 6 ). The plunger 11 is provided on its lateral surface, below the transverse passage 11.6, with a seal 18 which seals in the upper position of the plunger 11 the transverse passage 11.6 relative to the liquid outlet 8.4. The seal 18 has annular, axially spaced portions 18.1, 18.2, which are arranged in formed in the lateral surface of the plunger 11 annular grooves.

The propellant gas inlet 12 is designed as a connecting piece and has an external thread 12.1. In the propellant gas inlet (connecting piece) 12, a valve is integrated, whose movable valve body 19 is associated with a plunger 11 formed on the control surface 11.7. In a direction of the keg head 4 directed movement of the plunger 11 of the valve body 19 comes into contact with the control surface 11.7 and is moved from a closed position to an open position (see. Figures 5 and 6 ). The control surface 11.7 is designed such that the valve body 19 is only moved from the closed position into the open position when the transverse passage 11.6 of the plunger is in partial overlap with the liquid outlet 8.4. The valve body 19 has a hemispherical contact head 19.1. The propellant gas inlet (connecting piece) 12 has a constriction, at which the valve body 19 rests in the valve closed position with a ring seal (O-ring) 20. The valve body 19 is spring loaded. A compression spring (not shown) pushing the valve body 19 in the direction of the constriction is supported on a holder 21 defining a gas passage, which is releasably fixed in the connecting piece 12.

The housing 8, the plunger 11, the threaded sleeve 15 and the handwheel 14 are preferably made of plastic, for example polyethylene (PE), polypropylene (PP) and / or polyactides (PLA). Particularly preferred are at least the housing 8 and the plunger 11 made of transparent or transparent plastic.

The connection of the handwheel 14 with the threaded sleeve 15 and the plunger 11 is designed so that in a caused by mechanical impact on the handwheel breakage of the handwheel 14 dissolves the same of the threaded sleeve 15 by the snap ring 16 holding portion of the handwheel 14 of the remaining part of the handwheel 14 breaks off and / or a region of the handwheel 14 surrounding the flange nut 17 is torn off from the remaining part of the handwheel 14.

Furthermore, in particular in Fig. 6 to recognize that the housing 8 of the tap head 1 between serving to fasten the housing 8 on the keg head 4 connecting element (housing foot 8.1 with undercut or ring segment-shaped groove 8.7) and the propellant gas inlet 12 serving as a predetermined breaking point constriction 8.8.

The diameter of the handwheel 14 is preferably greater than the diameter of the keg-head flange 3 or the ring-segment-shaped groove 8.7 of the housing foot 8.1. On the other hand, in the illustrated embodiment, the diameter of the handwheel 14 is smaller than the diameter of the connectable with the keg head 4 housing foot 8.1.

The embodiment of the invention is not limited to the embodiment shown in the drawing. On the contrary, numerous variants are possible which make use of the invention specified in the appended claims, even if the design deviates from the embodiment shown. For example, the liquid outlet 8.4 and also on another side of the circumference of the tubular tap head housing 8 may be arranged as the propellant gas inlet 12. In particular, it is also within the scope of the invention to arrange the liquid outlet 8.4 and the propellant gas inlet 12 on opposite sides of the tap head housing 8.

Claims (12)

1. Dispenser head (1) for a beverage cask which has a valve head with a spring-loaded valve disc, comprising a housing (8), a connection element (8.1, 8.7) for fastening the housing (8) to the valve head of the beverage cask, a propellant gas inlet (12), configured on the housing (8), for connecting a propellant gas line, a ram (11) which is mounted movably in the housing (8) and contains a riser duct (11.5) and which, by pressing into the valve head, opens the spring-loaded valve disc, a liquid outlet (8.4) for connecting a beverage line and an actuating mechanism for actuating the ram (11), wherein the actuating mechanism is configured as a rotational mechanism which has a spiral gearing and a hand wheel (14) connected to the ram (11) and to the spiral gearing, characterised in that the liquid outlet (8.4) is arranged on the housing (8) below the hand wheel (14), the ram (11) having a cross passage (11.6) which runs into the riser duct (11.5) and which, in an upper position of the ram (11), is arranged such that it is sealed and offset with respect to the liquid outlet (8.4) and which, in a lower position of the ram (11) in which the ram opens the spring-loaded valve disc, is arranged such that it overlaps the liquid outlet (8.4).
2. Dispenser head according to claim 1, characterised in that the riser duct (11.5) merges in a rounded manner into the cross passage (11.6).
3. Dispenser head according to either claim 1 or claim 2, characterised in that the propellant gas inlet (12) is provided with a valve, the movable valve body (19) of which is associated with a control surface (11.7) formed on the ram (11), the valve body (19) coming into contact with the control surface (11.7) during a movement of the ram (11) directed towards the valve head of the beverage cask and being moved out of a closed position into an open position.
4. Dispenser head according to claim 3, characterised in that the control surface (11.7) is configured such that the valve body (19) is only moved out of the closed position into the open position when the cross passage (11.6) of the ram (11) is arranged such that it partly overlaps the liquid outlet (8.4).
5. Dispenser head according to any of claims 1 to 4, characterised in that the housing (8) and/or the ram (11) and/or the hand wheel (14) are produced from plastics material.
6. Dispenser head according to any of claims 1 to 5, characterised in that the housing (8) and the ram (11) are produced from transparent or clear plastics material.
7. Dispenser head according to any of claims 1 to 6, characterised in that the housing (8) has a neck (8.8) serving as a predetermined breaking point between the connection element (8.1, 8.7) used to fasten the housing to the valve head of the beverage cask and the propellant gas inlet (12).
8. Dispenser head according to any of claims 1 to 7, characterised in that the ram (11) is provided on the lateral surface thereof, below the cross passage (11.6), with a seal (18) which seals off the cross passage (11.6) from the liquid outlet (8.4) in the upper position of the ram (11).
9. Dispenser head according to any of claims 1 to 8, characterised in that the spiral gearing comprises a threaded sleeve (15) which has an inner thread (15.1) and the inner thread (15.1) of which engages with an outer thread (8.3) formed in the lateral surface of the housing (8).
10. Dispenser head according to claim 9, characterised in that the hand wheel (14) is connected in a torsionally rigid manner to the threaded sleeve (15) and is connected rotatably to the ram (11), the ram (11) being fixed axially on the hand wheel (14).
11. Dispenser head according to claim 10, characterised in that the connection of the hand wheel (14) to the threaded sleeve (15) and to the ram (11) is configured such that, in the event of the hand wheel (14) breaking due to a mechanical impact effect thereon, the hand wheel becomes detached from the threaded sleeve (15) in that a portion of the hand wheel (14) holding a snap ring (16) tears off from the remaining part of the hand wheel (14) and/or a region of the hand wheel (14), surrounding a flange nut (17) screwed together with the ram (11), tears off from the remaining part of the hand wheel (14), so that the ram (11) is automatically moved, due to the effect of the spring, out of its lower position in which the ram opens the spring-loaded valve disc, into its upper closed position.
12. Dispenser head according to any of claims 1 to 11, characterised in that the liquid outlet (8.4) for connecting a beverage line and the propellant gas inlet (12) for connecting a propellant gas line are arranged on the same side of the housing (8).

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