JP5993170B2 - Beer extraction cock - Google Patents

Description

  The present invention relates to an improvement of an extraction cock attached to a dispenser such as beer, and relates to a beer extraction cock having a valve structure capable of generating finer foam.

  Conventionally, a lever that is attached to a beer dispenser (beer server) and swingably supported on the cock body is operated. For example, when the lever is tilted forward, the beer is poured out from the beverage spout and the lever is tilted backward. A beer extraction cock is known in which beer bubbles are poured out from a foam extraction port to a mug or the like.

  For example, each of those disclosed in Patent Documents 1 to 3 can be separately provided with two types of extraction ports, a beer extraction port and a foam extraction port, and after pouring beer into a mug, fine bubbles can be poured back. I am doing so. This is because, when the conventional extraction port is a single extraction cock, if beer or foam remains on the inner wall of the extraction port, a large amount of foam is likely to occur when beer is poured next time. This is because the quality deteriorates. Moreover, it is because moderately foamed beer has good throat passage when drinking, and has a role of preventing leakage of carbon dioxide from the beer by the foam covering. In recent years, it is good that the traces of bubbles called angel rings remain in the mug, and there is a demand for pouring finer bubbles.

  The conventional foam extraction will be described. For example, in Patent Document 1, as shown in FIGS. 6 and 7 of the publication (numbers are based on the publication), when the lever 18 is tilted backward, the slider 20 is moved to beer. The supply path 12 is moved forward in the left direction. At this time, the position of the valve rod 34 does not change, but the second valve seat 38 provided on the slider 20 is separated from the second valve body 42 fixed to the valve rod 34, and is opened in the second valve body 42. The pores 36 are opened, and beer tends to flow out of the pores 36 through the through holes 31 penetrating the first valve body 30 and the liquid passage 32 of the valve rod 34. At this time, since the pores 36 are set to a sufficiently small inner diameter, the beer becomes a fine foam here. And this foam enters the foam extraction nozzle 16 through the through-hole 22 opened in the sleeve 24, and is poured back into the mug of beer.

  Moreover, in patent document 2, it is the structure substantially the same (a number is based on the same gazette), and provided the valve mechanism w for foam extraction in the terminal part of the foam flow path 6, and this is inclined by tilting a handle lever back. The valve is opened, and bubbles are discharged from the small-diameter opening 60 and poured into the mug from the bubble extraction tube 45.

  Furthermore, in patent document 3, the valve structure for foam discharge is different (the number is based on the same publication), and the slide valve 13 contacts the outlet of the foam passage 30 to close the outlet, and the valve face portion. A bar-like protrusion 41 protruding from 39 and inserted into the bubble passage 30 is provided, and a gap 42 is interposed between the rod-like protrusion 41 and the inner surface of the bubble passage 30. When the lever 11 is tilted rearward, the slide valve 13 moves away from the outlet of the foam passage 30, and the sparkling beverage passes through the gap 42 between the rod-like protrusion 41 and the inner surface of the foam passage 30. Released from the outlet. At this time, the sparkling beverage is ejected vigorously from the outlet of the foam passage 30 and collides with the valve face portion 39, thereby generating fine foam.

Japanese Patent Laid-Open No. 2001-192098 Japanese Patent Laid-Open No. 2002-2886 JP 2006-206157 A

  However, in recent years, the quality of beer has been improved, and the manner in which foam is generated changes depending on its temperature, pressure, viscosity, etc., and the above-described conventional beer extraction cock valve structure does not necessarily provide good fine foam. It is difficult to generate.

  Further, in the valve structures of Patent Documents 1 and 2, the second valve body 42 that closes the pores 36 and the valve body that closes the small-diameter opening 60 are always pressed against the opening by a spring, and deterioration thereof is a problem. It has become. In addition, the valve body is retracted by opening the cock to open the pores, etc., but the distance between the valve body and the pore changes depending on the operation of the cock. Required operator skill.

  As another problem, when extracting the beer itself, for example, as shown in FIG. 8 of Patent Document 2, depending on the operation of the cock, a part of the plug bar 5 may be placed on the upper end of the discharge pipe 43. It may protrude. If it does so, it will be in the state where a turbulent flow arises in the beer by the protrusion part, and it will be in the state where it rolls, and the unnecessary foam might be produced. Since the beer's taste and over the throat change depending on the state of the foam, such unnecessary turbulent foam affects the beer's taste and is not preferable.

  The present invention has been made in view of such circumstances, and for the beer extraction cock valve structure in a beer dispenser or the like, it is possible for anyone to always generate fine foam, and at the time of beer extraction The present invention also proposes an improvement in the valve structure of the beer extraction cock so as not to generate extra bubbles.

In order to solve the above-mentioned problems, the present invention has a connection portion 11a that can be connected to a beer server, forms a beer supply path 11b in the internal axial direction, and forms a valve seat 11e at an end portion on the connection portion 11a side. The cock main body 11 communicated with the beer supply path 11b and individually provided with the beer extraction port 11c and the foam extraction port 11d, and incorporated in the beer supply path 11b of the cock main body 11 so as to be movable back and forth along the axial direction. a valve structure 12 which is the attached to the cock body 11, a beer extract cock and a cock lever 13 to dynamic operating back and forth the valve structure 12 to switch the extraction of beer and foam, wherein valve structure 12 includes a main valve body 1 having a packing 1b and pore 1c seated on the valve seat 11e of the cock body 11, a valve stem 2 mounting the main valve body 1 whereas the end, this A hollow slider 3 attached to the other end whereas the end of the valve stem 2, the inner valve body 4 slidably interior to the slider 3, the ring packing 5 attached to one end of the inner valve body 4, It comprises a valve body presser 6 that houses a spring 7 that engages with the other end of the internal valve body 4 and is attached to the other end of the slider 3 , and the valve stem 2 is screwed into the main valve body 1 at one end. A flow passage 2c is provided from the insertion portion 2a to the closed end portion 2f with the other end closed at the center in the axial direction, and the flow passage extends radially from the center at the closed end portion 2f . A plurality of discharge holes 2d opened from 2c to the outer peripheral surface are provided at equal intervals in the circumferential direction, a screw portion 2e is provided adjacent to one end side of the closed end portion 2f , and the slider 3 has a hollow cylindrical shape. , stepped portion 3 at one end for attaching the valve stem 2 The provided, said valve said closed end 2f of the bar 2 to protrude inwardly of the step portion 3a forms a small diameter portion 3b for inserting screwing the screw portion 2e, the large diameter portion peripheral surface of the diametrical direction A through hole 3d is provided, and a hollow portion 3e having an inner diameter in which the inner valve body 4 is slidable is formed. The inner valve body 4 is urged by the spring 7 inside the stepped portion 3a. By operating the cock lever 13 to the bubble extraction side as the valve seat 3f on which the end surface 5a of the ring-shaped packing 5 is seated, the end surface 5a of the ring-shaped packing 5 resists the bias of the spring 7. A means was adopted in which a slight gap 3c, which becomes a bubble channel, was formed inside the stepped portion 3a apart from the valve seat 3f .

Specifically, it has a connection part 11a connectable to a beer server, forms a beer supply path 11b in the internal axial direction, forms a valve seat 11e at the end part on the connection part 11a side, and supplies the beer A cock body 11 that communicates with the passage 11b and has a beer extraction port 11c and a foam extraction port 11d individually, and a valve structure that is built in the beer supply passage 11b of the cock body 11 so as to be movable back and forth along the axial direction. the body 12, the attached to the cock body 11, a beer extract cock and a cock lever 13 to dynamic operating back and forth the valve structure 12 to switch the extraction of beer and foam, the valve structure 12 is a packing 1b seated on the valve seat 11e of the cock body 11 to the rear end of the substantially conical head 1a is mounted, the pores 1c provided in the axial center, in communication with the pores 1c A main valve body 1 provided with the through hole 1d, whereas having said main valve body 1 of the insertion hole 1d allows screwing of the insertion portion 2a on the edge, closing the other end from the insertion portion 2a in the axial center a plurality of discharge holes 2d to open the outer peripheral surface radially from the flow path 2c from the center in the closed end portion 2f with over the closed end portion 2f provided a flow path 2c is provided at regular intervals in the circumferential direction, the closure A valve stem 2 provided with a screw portion 2e adjacent to one end side of the end portion 2f, and a hollow cylindrical shape, and a stepped portion 3a is provided at one end where the screw portion 2e of the valve stem 2 is screwed , The closed end 2f protrudes to the inside of the stepped portion 3a to form a small-diameter portion 3b into which the screw portion 2e is inserted and screwed, and a diametrical through-hole 3d is provided in the peripheral surface of the large-diameter portion and inside thereof. internal valve body 4 forms a hollow portion 3e having a slidable inner diameter of the step portion 3a Side is a slider 3 which is a valve seat 3f, are furnished on the slider 3, the cylindrical body 4a is a flow passage 4b is formed between them as a slightly smaller outer diameter than the inner diameter of the hollow portion 3e of the slider 3, insertion A storage portion 4c of the ring-shaped packing 5 is provided at one end on the side, a diametrical through hole 4d is provided on the peripheral surface thereof, and a part of the internal valve body 4 is formed with a spring receiving projection 4e on the other end. can house the portion 4c of the internal valve body 4, the ring packing 5 the end face 5a is which enables closing the valve seat 3f of the slider 3 which is exposed to the distal end, of the inner valve member 4 a spring receiving protruding portion 4e, and the inner valve body 4 is housed in the slider 3 and can be screwed to the other end of the slider 3. The ring-shaped packing 5 of the inner valve body 4 by the urging force of the spring 7 is provided. The valve body pusher which always makes the end surface 5a of the valve seated on the valve seat 3f The operating rod 13a provided at the lower end of the cock lever 13 is fitted into the through holes 3d and 4d of the valve structure 12, and the valve structure 12 as a whole is interlocked with the tilting operation of the cock lever 13. Alternatively, when the inner valve body 4 moves back and forth, the packing 1b of the main valve body 1 moves away from the valve seat 11e of the cock body 11 to form a beer flow path, and the ring-shaped packing 5 The end face 5a is separated from the valve seat 3f of the slider 3 leaving a slight gap 3c, and means for switching between extraction of bubbles forming a bubble channel is adopted.

  In these cases, the number of discharge holes 2d provided in the valve stem 2 is preferably 2 to 4.

When the cock lever 13 is tilted to one side, the operating rod 13a advances the entire valve structure 12, and the packing 1b of the main valve body 1 moves away from the valve seat 11e of the beer supply passage 11b to the valve rod. When beer is extracted from the beer extraction port 11c and the cock lever 13 is tilted to the other side, only the internal valve body 4 whose operating rod 13a is housed in the slider 3 is provided. The end face 5a of the ring-shaped packing 5 is moved away from the valve seat 3f of the slider 3 due to the movement of the internal valve body 4 and the inner valve body 4 is moved. A gap 3c between the flow path 2c and the discharge hole 2d, the end surface 5a of the ring-shaped packing 5 formed inside the stepped portion 3a of the slider 3, and a space between the outer peripheral surface of the internal valve body 4 and the inner peripheral surface of the slider 3. Flow path 4b, Hole 3d, texture fine bubbles through a flow path of the bubbles formed in 4d is adopted means of generating a foam extraction port 11d, it is extracted.

Beer extraction cock of the present invention according to the above construction, the closed end with a period from one end in the axial center of the valve stem 2 forming the valve structure 12 to the closed end portion 2f of closing the other end provided with a flow path 2c A plurality of discharge holes 2d opened from the flow path 2c to the outer peripheral surface in the radial direction from the center in 2f are provided at equal intervals in the circumferential direction, while the stepped portion 3a provided in the slider 3 to which the valve rod 2 is screwed is provided. Since a slight gap 3c is formed on the inner side to form a foam flow path, the beer that has passed through the pore 1c of the main valve body 1 becomes foam in the portion, and further, the discharge hole 2d is equally distributed to the narrow flow path 3c. It becomes possible to produce finer foam when flowing into the water.

  Further, the bubbles can be made finer by evenly passing through a narrow flow path 4b formed between the hollow portion 3e of the slider 3 and the cylindrical main body 4a of the internal valve body 4.

  This makes it possible to extract beer and fine foam with a simple operation of the cock lever 13.

  Further, when extracting beer, the step 3a is provided at one end of the slider 3 to form the small diameter portion 3b, so that the end of the slider 3 main body is the upper edge of the beer extraction port 11c as in the prior art. There is no protrusion in the part, and no turbulent flow of beer occurs in the part. For this reason, the beer is not mixed with excess foam, and a beer with good throat can be provided.

(A) is an exploded view of the valve structure incorporated in the beer extraction cock of the present invention, and (B) is an assembly view thereof. It is sectional drawing which shows the steady state of a beer extraction cock. It is sectional drawing which shows the state which inclined the cock lever to the near side. It is sectional drawing which shows the state which inclined the cock lever to the back side. It is a partial expanded sectional view which shows the state of the internal valve body in FIG.

  Hereinafter, a preferred embodiment of a beer extraction cock according to the present invention will be described with reference to the accompanying drawings. FIG. 2 shows a cross section of the entire configuration of the extraction cock according to the present invention, and FIG. 1 shows each member constituting the valve structure attached to the extraction cock in an exploded state.

  In FIG. 1, reference numeral 1 denotes a main valve body, in which a ring-shaped packing 1b is attached to the rear end of a substantially conical head 1a. At the center of the main valve body 1 in the axial direction, a hole 1c is provided at the tip, and an insertion hole 1d is provided in communication with this to which a valve rod 2 described below can be screwed.

Reference numeral 2 denotes a hollow valve stem, which is provided with an insertion portion 2a and a packing presser 2b that can be screwed into the insertion hole 1d of the main valve body 1 at one end. Further, at the center of the valve stem 2 in the axial direction , a bubble channel 2c is provided from the insertion portion 2a to the closed end portion 2f closed at the other end on the opposite side , and the closed end portion 2f has a radius from the center. A plurality of discharge holes 2d opened from the flow path 2c to the outer peripheral surface in the direction is provided. The number of the discharge holes 2d is preferably 2 to 4, and they are provided at equal intervals in the circumferential direction. In the present embodiment, three discharge holes are provided at intervals of 120 °. Further, a screw portion 2e that is inserted and screwed into the slider 3 described below is provided at the other end of the valve stem 2 and adjacent to one end side of the closed end portion 2 .

Reference numeral 3 denotes a slider, which has a hollow and substantially cylindrical shape. A stepped portion 3a is provided at one end of the valve rod 2 where the screw portion 2e is inserted and screwed to form a small diameter portion 3b. When the threaded portion 2e of the valve stem 2 is inserted and screwed into the small diameter portion 3b, the closed end portion 2f penetrates the small diameter portion 3b, and the discharge hole 2d opens inside the stepped portion 3a. A slight gap is formed inside the stepped portion 3a, which becomes a beer foam flow path 3c as described later. Further, a through hole 3d is provided in the diameter direction on the peripheral surface of the large diameter portion, and communicates with a bubble extraction port 11d of the cock body 11 described later. The inside of the slider 3 is formed with a hollow portion 3e having an inner diameter on which the inner valve body 4 described below can freely slide, and the inside of the stepped portion 3a of the small diameter portion 3b forms a valve seat 3f as it is. A valve body retainer 6 described below is screwed into the end portion.

4 is an internal valve body built in the slider 3, and the cylindrical body 4 a has an outer diameter slightly smaller than the inner diameter of the hollow portion 3 e of the slider 3, and a bubble channel 4 b is interposed between the two. It is formed. In addition, a packing storage portion 4 c that stores the ring-shaped packing 5 is provided at one end on the insertion side. In addition, a through hole 4d is provided in the circumferential direction in the circumferential direction so as to communicate with the through hole 3b of the slider 3. Further, a spring receiving projection 4e is formed at the other end.

5 is a ring-shaped packing, part of which is stored in the packing storage part 4c of the internal valve body 4, and the closed end 2f provided with the discharge hole 2d of the valve stem 2 has a slight gap on the inner surface thereof. The end face 5a exposed at the tip of the slider 3 can be inserted and closed to close the valve seat 3f formed inside the stepped portion 3a of the slider 3.

  Reference numeral 6 denotes a valve body presser that can be screwed onto the end of the slider 3 so as to accommodate the internal valve body 4 in the slider 3, and is engaged with the spring receiving protrusion 4 e of the internal valve body 4 on the inner surface. The spring 7 is accommodated, and the end face of the ring-shaped packing 5 of the internal valve body 4 is always seated on the valve seat 3 f inside the slider 3 by the biasing force of the spring 7.

  FIG. 1 (B) shows an embodiment of the valve structure after assembly, and this is installed in an existing extraction cock in this state.

  Next, the operation of the extraction cock equipped with the valve structure configured as described above will be described with reference to FIGS.

  FIG. 2 shows the steady state of the extraction cock, in which no beer or foam is extracted. FIG. 3 shows a state in which the cock lever 13 is tilted forward (left side in the figure), and shows a state in which beer is extracted. On the other hand, FIG. 4 shows a state in which the cock lever 13 is tilted rearward (right side), and shows a state in which bubbles are added.

  In each figure, the extraction cock has the above-described configuration having a cock body 11 having a connection portion 11a connectable to a beer server, and a valve mechanism that is built in the cock body 11 and opens and closes a flow path for beer and foam. It is basically composed of a valve structure 12 and a cock lever 13 which can be tilted in the front-rear direction and can switch extraction of beer and foam by its operation. Conventional cock bodies 11 and cock levers 13 can be used.

  And the cock main body 11 communicates from the beer supply path 11b with a predetermined diameter penetrating in the axial direction inside thereof, and the beer supply path 11b, and the beer extraction port 11c and the beer extraction port 11c branch in parallel and obliquely downward. And a bubble extraction port 11d. A valve seat 11e on which the main valve body 1 of the valve structure 12 is seated is formed at the open side end of the beer supply path 11b. Moreover, the rising part 11f is branched on the upper surface of the cock main body 11, and the cock lever 13 is attached so that tilting is possible. And the valve structure 12 of the structure mentioned above is incorporated in the beer supply path 11b so that it may interlock | cooperate with tilting operation | movement of this cock lever 13. As shown in FIG. That is, the operating rod 13a provided at the lower end of the cock lever 13 is fitted into the through holes 3d and 4d of the valve structure 12, and the valve structure 12 and the internal valve body 4 are moved back and forth by the tilting operation of the cock lever 13. It will be. The basic configuration of such an extraction cock is basically the same as that of a conventional extraction cock, and its operation is basically the same as that of the conventional extraction cock. However, in the present invention, the valve structure 12 described above is used. The valve structure has its characteristic points, and by adopting the configuration, it is possible to generate finer-quality foam with finer texture.

First, the steady state of FIG. 2 will be described. In this steady state, the main valve body 1 of the valve structure 12 is urged and pressed in the axial direction by an appropriate means (not shown), and the packing 1b is seated on the valve seat 11e of the beer supply path 11b to close the portion. ing. For this reason, beer does not flow to the beer supply path 11b side and is not extracted from the beer extraction port 11c. Further, in the slider 3, since the end face 5a of the ring-shaped packing 5 attached to the internal valve body 4 is always seated on the valve seat 3f by the biasing force of the spring 7, bubbles are extracted from the bubble extraction port 11d. Nor.

Next, as shown in FIG. 3, the cock lever 13 Tilting the front side (left side), the entire valve structure 12 by the actuation rod 13a is advanced to the right side of the figure, the packing 1b valve seat 11e The flow path of beer is formed in this part. The beer flows outside the valve rod 2 in the beer supply path 11b and is poured into a mug placed below from the beer extraction port 11c. On the other hand, since the ring-shaped packing 5 remains seated in the slider 3, bubbles do not leak out in this state.

  Further, in this state, since the step portion 3a is provided at one end of the slider 3 to form the small diameter portion 3b, the end of the slider 3 main body may protrude from the upper end edge of the beer extraction port 11c. There is no beer turbulence in the area. Therefore, the beer is not mixed with excess foam, and only beer can be poured purely.

Subsequently, when the cock lever 13 is returned to the steady state and further tilted to the back side (right side) as shown in FIG. 4, the packing 1b is seated on the valve seat 11e in the steady state. Thus, the supply of beer is shut off and the entire valve structure 12 does not move any further. When the cock lever 13 is further tilted in this state, the operating rod 13a at the lower end of the cock lever 13 has only the internal valve body 4 housed in the slider 3 against the urging force of the spring 7 also housed therein. Only the inner valve body 4 moves slightly, and the end face 5a of the ring-shaped packing 5 moves away from the valve seat 3f formed inside the stepped portion 3a of the small diameter portion 3b of the slider 3. .

The state of the part at this time will be further described with reference to FIG. Since the valve stem 2 is seated on the valve seat 11e, a flow path for beer is not formed. However, the beer is formed by the pore 1c provided at the tip of the main valve body 1 and the flow path 2c of the valve stem 2 communicating with this. And the beer flows from the pores 1c to the larger-diameter channel 2c, so that the channel 2c is filled with bubbles. Further, on the other end side of the flow path 2c provided in the valve stem 2 , the closed end portion 2f penetrates the small diameter portion 3b of the slider 3, and the discharge holes 2d are provided at equal intervals in the circumferential direction in the radial direction. Is opened to the inside of the stepped portion 3a, and as described above, the end surface 5a of the ring-shaped packing 5 is separated from the valve seat 3f formed inside the stepped portion 3a of the slider 3, so that the bubbles are discharged from the discharge hole. evenly flows a slight gap 3c between the end face 5a of the inner and ring packing 5 of the step portion 3a as the passage from 2d, further more just of the inner peripheral surface of the outer peripheral surface and the slider 3 of the internal valve body 4 This gap flows evenly as the flow path 4b, flows out to the through holes 3d and 4d, and flows out to the bubble extraction port 11d communicating with the through holes 3d and 4c. Therefore, the fine bubbles that have flowed out of the discharge holes 2d are generated as fine bubbles with finer texture by sequentially passing through these narrow flow paths.

  And if the cock lever 13 is operated and it returns to the said steady state, both the main valve body 1 and the internal valve body 4 will seat, and extraction of beer and foam will stop.

DESCRIPTION OF SYMBOLS 1 Main valve body 1a Head 1b Packing 1c Small hole 1d Insertion hole 2 Valve rod 2a Insertion part 2c Flow path 2d Discharge hole 2e Screw part 3 Slider 3a Step part 3b Small diameter part 3c Flow path 3d Through-hole 3e Hollow part 3f Valve seat 4 Internal valve body 4a Cylindrical main body 4b Flow path 4c Storage portion 4d Passing portion 4e Spring receiving projection 5 Ring-shaped packing 5a End face 6 Valve body holder 7 Spring 11 Cock main body 11a Connection portion 11b Beer supply path 11c Beer extraction port 11d Foam Extraction port 11e Valve seat 11f Rising part 12 Valve structure 13 Cock lever 13a Actuator

Claims (4)

While having the connection part 11a which can be connected to a beer server, the beer supply path 11b is formed in the internal axial direction, the valve seat 11e is formed in the end part on the side of the connection part 11a, and the beer is communicated with the beer supply path 11b. a cock body 11 having an extraction port 11c and the foam extraction opening 11d individually, the valve structure 12 to be built back and forth movement can be along the axial direction in the beer supply path 11b of the cock body 11, the cock body 11, a beer extraction cock provided with a cock lever 13 that moves the valve structure 12 back and forth so as to switch between extraction of beer and foam ,
The valve structure 12 includes a main valve body 1 having a packing 1b seated on a valve seat 11e of the cock body 11 and a pore 1c, a valve rod 2 for attaching the main valve body 1 to one end, and a valve a hollow slider 3 attached to the other end of the bar 2 on the other hand the end, the inner valve body 4 slidably interior to the slider 3, the ring packing 5 attached to one end of the inner valve body 4, the A valve body presser 6 that houses a spring 7 that is engaged with the other end of the internal valve body 4 and is attached to the other end of the slider 3 ;
The valve stem 2 has an insertion portion 2a that can be screwed to the main valve body 1 at one end, and a flow path 2c is provided from the insertion portion 2a to the closed end portion 2f with the other end closed at the center in the axial direction. In addition, a plurality of discharge holes 2d opened from the flow path 2c to the outer peripheral surface in the radial direction from the center in the closed end 2f are provided at equal intervals in the circumferential direction, and adjacent to one end side of the closed end 2f. a threaded portion 2e provided Te,
The slider 3 has a hollow cylindrical shape, and is provided with a stepped portion 3a at one end where the valve stem 2 is attached , and the closed end portion 2f of the valve stem 2 protrudes inside the stepped portion 3a. 2e is formed and a small diameter portion 3b is formed, and a diametrical through hole 3d is provided on the peripheral surface of the large diameter portion , and a hollow portion 3e having an inner diameter capable of sliding the internal valve body 4 is formed therein. ,
Inside the stepped portion 3a is a valve seat 3f on which the inner valve body 4 is urged by the spring 7 and the end face 5a of the ring-shaped packing 5 is seated .
By operating the cock lever 13 to the bubble extraction side, the end surface 5a of the ring-shaped packing 5 moves away from the valve seat 3f against the bias of the spring 7, and bubbles are formed inside the stepped portion 3a. A beer extraction cock, characterized in that a slight gap 3c serving as a flow path is formed . While having the connection part 11a which can be connected to a beer server, the beer supply path 11b is formed in the internal axial direction, the valve seat 11e is formed in the end part on the side of the connection part 11a, and the beer is communicated with the beer supply path 11b. a cock body 11 having an extraction port 11c and the foam extraction opening 11d individually, the valve structure 12 to be built back and forth movement can be along the axial direction in the beer supply path 11b of the cock body 11, the cock body 11, a beer extraction cock provided with a cock lever 13 that moves the valve structure 12 back and forth so as to switch between extraction of beer and foam ,
The valve structure 12 is
A packing 1b seated on the valve seat 11e of the cock body 11 is attached to the rear end of the substantially conical head 1a. A hole 1c is provided at the axial center of the packing 1b. The hole 1d communicates with the hole 1c. A main valve body 1 provided with
On the other hand have a screwed possible insertion portion 2a into the insertion hole 1d of the main valve body 1 in the end, the with the period from the insertion portion 2a in the axial center to the closed end portion 2f of closing the other end provided with a flow path 2c In the closed end 2f , a plurality of discharge holes 2d opened from the flow path 2c to the outer peripheral surface in the radial direction from the center are provided at equal intervals in the circumferential direction, and screwed adjacent to one end of the closed end 2f. A valve stem 2 provided with a portion 2e;
A hollow cylindrical shape is provided with a stepped portion 3a at one end to which the screw portion 2e of the valve stem 2 is screwed , and the closed end portion 2f protrudes to the inside of the stepped portion 3a to insert the screw portion 2e. A small diameter portion 3b to be attached is formed, a through hole 3d in the diameter direction is provided on the peripheral surface of the large diameter portion , and a hollow portion 3e having an inner diameter capable of sliding the internal valve body 4 is formed therein, and the step portion The inside of 3a is a slider 3 with a valve seat 3f,
The cylindrical body 4a, which is housed in the slider 3, has an outer diameter slightly smaller than the inner diameter of the hollow portion 3e of the slider 3 to form a flow path 4b therebetween, and a ring-shaped packing 5 is formed at one end on the insertion side. An internal valve body 4 provided with a storage portion 4c, a through-hole 4d in the diameter direction on the peripheral surface thereof, and a spring receiving projection 4e formed on the other end;
Some are capable held in the holding section 4c of the inner valve body 4, the ring packing 5 the end face 5a is which enables closing the valve seat 3f of the slider 3 which is exposed to the tip,
A spring 7 to be engaged with the spring receiving protrusion 4e of the internal valve body 4,
The inner valve body 4 is accommodated in the slider 3 and can be screwed to the other end of the slider 3, and the end face 5a of the ring-shaped packing 5 of the inner valve body 4 is attached to the valve seat 3f by the urging force of the spring 7. It consists of a valve holder 6 that is always seated,
An operating rod 13a provided at the lower end of the cock lever 13 is fitted into the through holes 3d and 4d of the valve structure 12, and the whole valve structure 12 or the internal valve body 4 is interlocked with the tilting operation of the cock lever 13. By moving back and forth, the packing 1b of the main valve body 1 is separated from the valve seat 11e of the cock body 11 to form a flow path of beer, and the end surface 5a of the ring-shaped packing 5 is the slider 3 Switching between extraction of the foam leaving the valve seat 3f leaving a slight gap 3c to form a flow path of the foam ,
The beer extraction cock according to claim 1. The beer extraction cock according to claim 1 or 2, wherein the number of discharge holes 2d provided in the valve stem 2 is 2 to 4. When the cock lever 13 is tilted to one side, the operating rod 13a advances the entire valve structure 12, and the packing 1b of the main valve body 1 moves away from the valve seat 11e of the beer supply passage 11b and the valve rod 2 When a beer flow path is formed on the outer side, beer is extracted from the beer extraction port 11c, and the cock lever 13 is tilted to the other side, only the internal valve body 4 in which the operating rod 13a is housed in the slider 3 is attached to the spring 7 The end face 5a of the ring-shaped packing 5 is separated from the valve seat 3f of the slider 3 by the movement of the internal valve body 4, and the pore 1c of the main valve body 1 and the flow path of the valve stem 2 are moved. 2c, the discharge hole 2d, a gap 3c between the end surface 5a of the ring-shaped packing 5 formed inside the stepped portion 3a of the slider 3, and formed between the outer peripheral surface of the internal valve body 4 and the inner peripheral surface of the slider 3. Channel 4b, through hole 3 , Generates texture from fine bubbles bubbles extraction opening 11d through the flow path of the bubbles formed in 4d, claim 2 or claim 3 Beer extraction cock according extracted.

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