CN215626753U - Air inlet joint for distributing beverage - Google Patents

Abstract

The utility model provides an air inlet joint for distributing beverage, and belongs to the technical field of wine drinking equipment. The problem that when the existing air inlet connector is adopted by wine drinking equipment, the process for replacing the wine barrel is troublesome in operation is solved. This air inlet joint for distributing beverage is including the joint body that is equipped with inlet passage, and it is open installation cavity that the bottom has on the joint body, still is equipped with elastic component and the valve opening that is located installation cavity upper portion in the joint body, and it is used for cutting off or switches on inlet passage's air inlet case to slide in the valve opening, and elastic component is used for roof pressure air inlet case downstream and cuts off inlet passage, can also switch on inlet channel through inlet valve case upward movement. The utility model can facilitate and fast the process of replacing the wine barrel of the wine drinking equipment, and the air inlet joint has the advantages of convenient manufacture and low manufacture cost.

Description

Air inlet joint for distributing beverage

Technical Field

The utility model belongs to the technical field of wine drinking equipment, and relates to an air inlet joint for distributing beverage.

Background

Beer is a favorite beverage, especially in summer, and is more frequently found in people's lives. At present, beer sold in the market mainly comprises three types of filled beer, bottled beer and barreled beer, and the barreled beer has the advantages of large capacity, stable taste, mellow taste and the like, so the beer is widely applied to occasions such as bars, parties and the like.

Barreled beer deposits beer through the cask as the name implies promptly, and the bung hole department of cask installs the wine lance, and the wine lance can cooperate with play wine pipe and admission connector, and when using, high-pressure gas need be carried to the cask in through admission connector, and beer in the cask is pushed out under high-pressure gas's effect to flow through the wine lance and play wine pipe and finally flow to beer tap department and supply people to drink.

A valve assembly for dispensing beverages as disclosed in chinese patent application No. (CN 02827943.3; granted No.: CN100341774C) comprises a substantially cylindrical housing in which is arranged a valve body for opening and closing a wine outlet passage, and when the valve body is opened, the beverage in the container is discharged from the dispensing member and the hose. In order to convey the gas into the container, the shell is also connected with a connecting piece, and the connecting piece is particularly connected with a flange of the shell in a clamping manner. Meanwhile, the valve body is arranged in the valve assembly, so that when the container is taken down from the distributing device, the valve body is closed, high-pressure gas in the wine barrel is prevented from being discharged, and the quality of the beverage in the bag in the wine barrel can be better maintained. In the actual use process, the valve assembly has the following defects: in some situations, it is common to place multiple wine barrels in a single wine drinking device, such as a draught beer machine or a wine vending machine, to store different beverages, to provide the user with multiple options. Meanwhile, the wine barrels are all connected to the same air pump (or carbon dioxide gas bottle), so that the air pump can deliver high-pressure gas into the wine barrels. In use, when the beverage in one of the wine barrels is used up, a new wine barrel needs to be replaced, and when the valve component is adopted, the connecting piece needs to be detached from the shell, and then the new wine barrel needs to be replaced to be connected with the connecting piece. However, during the process of removing the connecting piece, the air inlet valve on the air pump or the air inlet pipe needs to be closed in advance, otherwise, the air of the air pump can be continuously discharged from the air inlet pipe. However, whether the air pump is closed or the air inlet valve is closed, corresponding operation steps are required to be added, and the process of replacing the wine barrel is troublesome. Moreover, when the air pump is directly closed, other wine barrels can not produce wine, and the wine selling machine or draught beer machine is actually in a halt state in the process of replacing the wine barrels, so that the use experience of consumers is greatly influenced.

Disclosure of Invention

The utility model aims to solve the problems of the prior art that the operation of a process for replacing a wine barrel is troublesome when the existing air inlet joint is adopted in the wine drinking equipment.

The purpose of the utility model can be realized by the following technical scheme: the air inlet joint for distributing the beverage comprises a joint body provided with an air inlet passage, wherein an installation cavity with an open bottom is formed in the joint body.

The air inlet joint is matched with the wine outlet assembly to lead wine in the wine barrel out to the wine outlet faucet for drinking. Wine dispensing assemblies are known in the art and typically include a wine spear and a wine outlet tube. During the use, the installation cavity on the joint body is used for making wine lance and play wine pipe on the cask stretch into in it, realizes installing the joint body on the wine lance, simultaneously, the intake pipe of being connected with the air pump is connected with inlet passage's entry. Wine in the cask uses up and when needing to be changed the cask, operating personnel only need to connect the body and take off from the wine spear, meanwhile, the elastic component can automatic roof pressure air inlet valve core downstream, make the air inlet passage just cut off by the air inlet valve core, the gaseous continuous exhaust condition from the air inlet passage of follow source of having avoided the air pump, just so can save the operating procedure of closing the air pump or closing the air inlet valve on the intake pipe, make the process of changing the cask convenient, quick.

And, this joint is used for the valve hole of installation air inlet valve core to be located the upper portion of installation cavity in this internal, and the air inlet valve core switches on the inlet channel through the mode of rebound, consequently after new cask is connected with the joint body, can realize relying on the case to go out the wine subassembly on the cask and upwards roof pressure air inlet valve core for the inlet channel is automatic to be opened, has consequently further guaranteed that the process of changing the cask is convenient, quick.

In the above-mentioned air inlet joint for distributing beverage, the joint body is including connecting the cap, connect the cap including the main part that is the tube-shape and fix the roof at main part top end opening part, the inside wall of main part and the inside wall of roof enclose and close and form foretell installation cavity, the valve opening is the perpendicular to roof and runs through the through-hole of roof, still have the grafting portion that is the tube-shape on the inside wall of roof, the lower extreme of air inlet valve core is worn out the valve opening and is stretched into in the hole of grafting portion. The air inlet joint can realize wine outlet by adopting a wine outlet pipe in the prior art, and generally comprises a hose and a top core connected with one end of the hose, such as the wine outlet pipe disclosed in a liquid distribution part (application number: CN201921302164.4) in Chinese patent literature. In this air inlet joint, because be equipped with the grafting portion that is the tube-shape on the inner wall of roof, consequently when carrying out air inlet joint and cask being connected, grafting portion can supply the ejector core of wine pipe to stretch into to realize the location of ejector core, make the connection process convenient and install after the ejector core stability good. Through set up the roof on connecting the cap, and valve opening and grafting portion all machine-shaping on the roof, can be convenient for make like this, reduce the processing cost.

In the above air inlet joint for distributing beverage, the joint body further comprises a joint cover fixedly connected to the outer side wall of the top plate, the air inlet passage comprises an air inlet cavity located on the joint cover and an air inlet channel arranged on the air inlet valve core, the air inlet cavity is located at the upper part of the valve hole, an air inlet nozzle is arranged on the outer wall of the joint cover, and the air inlet channel is communicated with the air inlet nozzle through the air inlet cavity. The suction nozzle is convenient for being connected with the air inlet pipe. After connecting the body and being connected of wine lance, high-pressure gas in the inlet tube carries to the cask in through inlet channel on suction nozzle, the chamber of admitting air and the case of admitting air in proper order to extrude the wine in the cask, finally flow to play wine tap department and supply people to drink.

In the above air inlet joint for dispensing beverage, a first abdicating notch is formed on the side wall of the insertion part, and a second abdicating notch opposite to the first abdicating notch is formed on the side wall of the joint cover. The first notch of stepping down and the second notch of stepping down are used for supplying the hose of wine pipe to pass to when changing the cask, be convenient for go out wine pipe and air inlet connector's being connected, thereby make the process of changing the cask more convenient, quick.

In the above air inlet joint for dispensing beverages, the elastic member is a spring, the elastic member is disposed in the air inlet cavity, the upper end of the elastic member abuts against the inner wall of the top of the air inlet cavity, and the lower end of the elastic member abuts against the top surface of the air inlet valve core. This elastic component's mode of setting for when connecting the body and taking off from the wine lance and change the cask, the elastic component can automatic roof pressure air inlet valve core downstream, makes the passageway of admitting air just by the case wall that admits air, has avoided the gas of air pump to constantly discharge from the passageway of admitting air, makes the process of changing the cask convenient, quick. When a new wine barrel is replaced, the top core of the wine outlet pipe positioned in the insertion part can upwards push the air inlet valve core, so that after the new wine barrel is connected with the connector body, the air inlet passage can be automatically opened, and the convenience and the rapidness in the process of replacing the wine barrel are further ensured.

In the above air inlet joint for dispensing beverages, the air inlet valve core is cylindrical, the air inlet channel includes an axial air inlet hole axially arranged along the air inlet valve core and a radial through hole radially arranged along the air inlet valve core, the upper end of the axial air inlet hole is closed, the lower end of the axial air inlet hole is provided with an opening located on the lower end face of the air inlet valve core, the inlet of the radial through hole is located on the peripheral wall of the air inlet valve core, and the outlet of the radial through hole is communicated with the axial air inlet hole. High-pressure gas enters the air inlet cavity through the air inlet nozzle, then is discharged to the top core of the wine outlet pipe through the radial through hole and the axial air inlet hole in sequence, and finally enters the wine barrel. After the air inlet joint is connected to the wine lance, the lower end of the air inlet valve core is simultaneously inserted into the air inlet joint of the top core of the wine outlet pipe. Because the outlet of the axial air inlet hole is positioned on the lower end face of the air inlet valve core, the air passage communication between the air inlet valve core and the top core can be realized when the lower end of the air inlet valve core is inserted into the air inlet interface of the top core through the design.

In the above air inlet joint for distributing beverage, the outer peripheral wall of the air inlet valve core is sleeved with a first sealing ring and a second sealing ring, the first sealing ring and the second sealing ring are respectively located at the upper side and the lower side of the radial through hole, the second sealing ring is always kept sealed with the inner wall of the valve hole, the elastic element presses the air inlet valve core to move downwards, the first sealing ring forms a seal with the inner wall of the valve hole, the air inlet valve core moves upwards, the first sealing ring is separated from the inner wall of the valve hole, and the inlet of the radial through hole is communicated with the air inlet cavity. After the air inlet valve core moves upwards, the first sealing ring is separated from the inner wall of the valve hole, so that the air inlet cavity is communicated with the radial through hole of the air inlet valve core, and the air inlet passage is opened by the air inlet valve core at the moment. When the air inlet joint is disassembled, the elastic piece presses the air inlet valve core to move downwards, and the first sealing ring and the inner wall of the valve hole form sealing, so that the air inlet passage is separated, namely the air inlet cavity is not communicated with the through hole. The second sealing ring always keeps sealed with the inner wall of the valve hole, and high-pressure gas can be guaranteed not to leak between the gas inlet valve core and the valve hole.

In the above air inlet joint for dispensing beverages, two third sealing rings are sleeved on the outer peripheral wall of the lower end of the air inlet valve core, and the two third sealing rings are arranged at intervals along the axial direction of the air inlet valve core. After the air inlet connector is connected to the wine lance, the lower end of the air inlet valve core is simultaneously inserted into the air inlet interface of the top core of the wine outlet pipe, at the moment, the air inlet valve core and the air inlet interface inner wall are sealed through the two third sealing rings, and the high-pressure gas is prevented from being leaked from the air inlet interface of the top core.

In the above air inlet joint for dispensing beverage, the upper end of the air inlet valve core is provided with a radially outward protruding limiting flange, and the elastic element presses the air inlet valve core to move downwards, and then the limiting flange abuts against the edge of the upper opening of the valve hole. When the air inlet joint is taken down to replace the wine barrel, the elastic piece needs to press the air inlet valve core to move downwards so as to block the air inlet passage. And set up spacing flange through the upper end at the air inlet valve core, can inject the stroke that the air inlet valve core moved down, and need not worry that the air inlet valve core deviates from the valve hole, consequently make the barrel changing operation more convenient.

In the above-mentioned air inlet connection for dispensing beverages, the number of said radial through holes is two and arranged coaxially. Compare in single radial through-hole, adopt two radial through-holes can increase the air input, promote out wine efficiency. Meanwhile, the two radial through holes are arranged coaxially, and only the punching equipment is needed to be utilized to punch a through hole along the radial direction of the air inlet joint during machining, so that the two radial through holes can be formed, and the machining is more convenient.

Compared with the prior art, the air inlet joint for distributing the beverage has the following advantages:

1. wine liquid in the cask uses up and when changing the cask, operating personnel only need to connect the body and take off from the wine spear, meanwhile, the elastic component can automatic roof pressure air inlet valve core downstream, make the air inlet passage just cut off by the air inlet valve core, the gaseous continuous exhaust condition from the air inlet passage of following of having avoided the air pump, just so can save the operating procedure of closing the air pump on air pump or the intake pipe air inlet valve, make the process of changing the cask convenient, quick.

2. This air inlet joint's joint body is including the joint lid and connecting the cap, and the joint lid can be processed alone with connecting the cap, and processing after accomplish through screwed connection can, such design can make this air inlet joint make conveniently, reduces manufacturing cost.

Drawings

Fig. 1 is a schematic perspective view of the air inlet joint.

Fig. 2 is a top view of the present air inlet joint.

Fig. 3 is a cross-sectional view a-a of fig. 2.

Fig. 4 is an exploded view of the present air intake connector.

Fig. 5 is a schematic perspective view of the intake joint from another perspective.

Fig. 6 is a schematic perspective view of the wine outlet pipe used in cooperation with the air inlet joint.

Fig. 7 is a schematic view of the use state of the intake joint.

In the figure, 1, a joint body; 1a, connecting caps; 1a1, body portion; 1a2, top plate; 1a3, valve bore; 1a4, a plug part; 1a5, a first abdicating notch; 1a6, a second abdicating notch; 1b, a joint cover; 1b1, air inlet nozzle; 2. an intake passage; 21. an air inlet cavity; 22. an air intake passage; 22a, axial air inlet holes; 22b, radial through holes; 1d, mounting a cavity; 3. an elastic member; 4. an air inlet valve core; 41. a first seal ring; 42. a second seal ring; 43. a third seal ring; 44. a limiting flange; 5. a wine spear; 6. a wine barrel; 7. an air inlet pipe; 8. a wine outlet pipe; 81. a core; 811. an air inlet interface; 812. an air outlet; 813. a wine outlet channel; 82. a hose.

Detailed Description

The following is a specific embodiment of the present invention and is further described with reference to the accompanying drawings, but the present invention is not limited to this embodiment.

As shown in fig. 1 to 3, the joint body 1 includes a connection cap 1a and a joint cover 1b, and the connection cap 1a and the joint cover 1b are connected by a bolt. The connecting cap 1a of the connector body 1 is internally provided with an installation cavity 1d with an open bottom, the connector body 1 is internally provided with an elastic part 3 and a valve hole 1a3 positioned at the upper part of the installation cavity 1d, the valve hole 1a3 is internally provided with an air inlet valve core 4 used for cutting off or conducting the air inlet passage 2 in a sliding manner, the elastic part 3 is used for jacking the air inlet valve core 4 to move downwards and cut off the air inlet passage 2, and the air inlet passage 22 can be conducted by the upward movement of the air inlet valve core 4.

Specifically, referring to fig. 3 to 5, the connecting cap 1a includes a cylindrical main body portion 1a1 and a top plate 1a2 fixed at an opening at a top end of the main body portion 1a1, the joint cover 1b is fixedly connected to an outer side wall of the top plate 1a2, an inner side wall of the main body portion 1a1 and an inner side wall of the top plate 1a2 enclose to form the mounting cavity 1d, the valve hole 1a3 is a through hole perpendicular to the top plate 1a2 and penetrating through the top plate 1a2, the inner side wall of the top plate 1a2 further has a cylindrical insertion portion 1a4, and a lower end of the air inlet valve core 4 penetrates through the valve hole 1a3 and extends into an inner hole of the insertion portion 1a 4. The sidewall of the insertion part 1a4 is provided with a first abdicating notch 1a5, and the sidewall of the joint cover 1b is provided with a second abdicating notch 1a6 opposite to the first abdicating notch 1a 5. As can be seen from fig. 7, the first and second notches 1a5 and 1a6 are used for the flexible tube 82 of the wine outlet pipe 8 to pass through, so that when the wine barrel 6 is replaced, the connection between the wine outlet pipe 8 and the air inlet connector is facilitated, and the process of replacing the wine barrel 6 is more convenient and faster.

As shown in fig. 3, the intake valve core 4 is cylindrical, the intake passage 2 includes an intake chamber 21 located on the joint cover 1b and an intake passage 22 opened on the intake valve core 4, the intake chamber 21 is located above the valve hole 1a3, the joint cover 1b has an intake nozzle 1b1 on the outer wall, and the intake passage 22 is communicated with the intake nozzle 1b1 through the intake chamber 21. The air inlet channel 22 comprises an axial air inlet hole 22a arranged along the axial direction of the air inlet valve core 4 and a radial through hole 22b arranged along the radial direction of the air inlet valve core 4, the upper end of the axial air inlet hole 22a is closed, the lower end of the axial air inlet hole is provided with an opening positioned on the lower end surface of the air inlet valve core 4, the inlet of the radial through hole 22b is positioned on the peripheral wall of the air inlet valve core 4, and the outlet of the radial through hole 22b is communicated with the axial air inlet hole 22 a. The high-pressure gas enters the air inlet cavity 21 through the air inlet nozzle 1b1, then is discharged to the top core 81 of the wine outlet pipe 8 through the radial through hole 22b and the axial air inlet hole 22a in sequence, and finally enters the wine barrel 6. In the present embodiment, the number of the radial through holes 22b is two and is coaxially arranged. Compared with a single radial through hole 22b, the adoption of the two radial through holes 22b can increase the air input and improve the wine outlet efficiency.

As shown in fig. 3, the elastic member 3 is a spring, the elastic member 3 is disposed in the air intake chamber 21, the upper end of the elastic member 3 abuts against the inner wall of the top of the air intake chamber 21, and the lower end of the elastic member 3 abuts against the top surface of the air intake valve core 4. In order to prevent the air inlet valve core 4 from escaping from the valve hole 1a3, the upper end of the air inlet valve core 4 is provided with a radial convex limiting flange 44, and the elastic piece 3 presses the air inlet valve core 4 to move downwards, and then the limiting flange 44 abuts against the upper opening edge of the valve hole 1a 3.

As shown in fig. 3, a first sealing ring 41 and a second sealing ring 42 are sleeved on the outer peripheral wall of the intake valve core 4, the first sealing ring 41 and the second sealing ring 42 are respectively located at the upper side and the lower side of the radial through hole 22b, the second sealing ring 42 is always kept sealed with the inner wall of the valve hole 1a3, the elastic member 3 presses the intake valve core 4 to move downwards, the first sealing ring 41 forms a seal with the inner wall of the valve hole 1a3, the intake valve core 4 moves upwards, the first sealing ring 41 is separated from the inner wall of the valve hole 1a3, and the inlet of the radial through hole 22b is communicated with the intake chamber 21. After the intake valve core 4 moves upward, the first sealing ring 41 is separated from the inner wall of the valve hole 1a3, so that the intake chamber 21 is communicated with the radial through hole 22b of the intake valve core 4, and the intake valve core 4 opens the intake passage 2. When the air inlet joint is detached, the elastic piece 3 presses the air inlet valve core 4 to move downwards, and the first sealing ring 41 forms a seal with the inner wall of the valve hole 1a3, so that the air inlet passage 2 is blocked, namely the air inlet cavity 21 is not communicated with the air inlet through hole. The second sealing ring 42 is always sealed with the inner wall of the valve hole 1a3, and high-pressure gas can be prevented from leaking between the air inlet valve core 4 and the valve hole 1a 3.

Referring to fig. 3 and 7, two third sealing rings 43 are sleeved on the outer peripheral wall of the lower end of the air inlet valve core 4, and the two third sealing rings 43 are arranged at intervals along the axial direction of the air inlet valve core 4. After the air inlet connector is connected to the wine lance 5, the lower end of the air inlet valve core 4 is simultaneously inserted into the air inlet interface 811 of the top core 81 of the wine outlet pipe 8, at the moment, the air inlet valve core 4 and the inner wall of the air inlet interface 811 can be sealed through the two third sealing rings 43, and the high-pressure gas is prevented from leaking from the air inlet interface 811 of the top core 81.

The method of use and the principle of operation of the present air inlet joint are described below in conjunction with fig. 7. The air inlet joint is matched with the wine outlet assembly to lead wine in the wine barrel 6 to the wine outlet faucet for drinking. The wine dispensing assembly generally comprises a wine lance 5 and a wine outlet tube 8. Fig. 6 illustrates the structure of the wine outlet pipe 8, and the wine lance 5 is mounted at the opening of the wine barrel 6 as shown in fig. 7.

When in use, firstly, the air inlet pipe 7 connected with the air pump is connected with the air inlet nozzle 1b1, then the top core 81 of the wine outlet pipe 8 is arranged in the inner hole of the insertion part 1a4 of the connecting cap 1a, and the lower end of the air inlet valve core 4 extends into the air inlet interface 811 of the top core 81, then, the air inlet joint with the wine outlet pipe 8 is clamped on the wine lance 5, after the air inlet joint is installed, the air inlet valve core 4 is pushed upwards by the jacking core 81, so that the air inlet valve core 4 opens the air inlet passage 2, at this time, the high-pressure gas can be discharged through the air inlet nozzle 1b1, the air inlet cavity 21, the air inlet channel 22 and the air outlet 812 on the top core 81 in sequence, and finally flows into the wine barrel 6, so that high pressure is generated in the wine barrel 6, the inner bag in the wine barrel 6 is compressed, and the wine water flows out through the wine outlet passage of the wine lance 5, the wine outlet channel 813 of the top core 81 and the hose 82 in sequence, and finally flows out to the wine outlet tap for people to drink.

When the wine in the wine barrel 6 is used up and the wine barrel 6 needs to be replaced, an operator only needs to take the connector body 1 down from the wine spear 5, meanwhile, the elastic piece 3 can automatically press the air inlet valve core 4 to move downwards, so that the air inlet passage 2 is separated by the air inlet valve core 4, the state shown in figure 3 is reached, the air inlet passage 2 is automatically separated by the air inlet valve core 4, the situation that the air of the air pump is continuously discharged from the air inlet passage 2 is avoided, the operation step of closing the air pump or closing the air inlet valve on the air inlet pipe 7 can be omitted, and the process of replacing the wine barrel 6 is convenient and quick.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although 1, the fitting body is used more herein; 1a, connecting caps; 1a1, body portion; 1a2, top plate; 1a3, valve bore; 1a4, a plug part; 1a5, a first abdicating notch; 1a6, a second abdicating notch; 1b, a joint cover; 1b1, air inlet nozzle; 2. an intake passage; 21. an air inlet cavity; 22. an air intake passage; 22a, axial air inlet holes; 22b, radial through holes; 1d, mounting a cavity; 3. an elastic member; 4. an air inlet valve core; 41. a first seal ring; 42. a second seal ring; 43. a third seal ring; 44. a limiting flange; 5. a wine spear; 6. a wine barrel; 7. an air inlet pipe; 8. a wine outlet pipe; 81. a core; 811. an air inlet interface; 812. an air outlet; 813. a wine outlet channel; 82. hose, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims (10)

1. The air inlet joint for distributing the beverage comprises a joint body (1) provided with an air inlet passage (2), wherein an installation cavity (1d) with an open bottom is formed in the joint body (1), and the air inlet joint is characterized in that an elastic piece (3) and a valve hole (1a3) located in the upper portion of the installation cavity (1d) are further arranged in the joint body (1), an air inlet valve core (4) used for cutting off or conducting the air inlet passage (2) is arranged in the valve hole (1a3) in a sliding mode, the elastic piece (3) is used for jacking the air inlet valve core (4) to move downwards and cut off the air inlet passage (2), and an air inlet channel (22) can be conducted through upward movement of the air inlet valve core (4).

2. Air inlet tap for dispensing beverage according to claim 1, characterized in that the tap body (1) comprises a connecting cap (1a), the connecting cap (1a) comprises a cylindrical main body part (1a1) and a top plate (1a2) fixed at the top end opening of the main body part (1a1), the inner side wall of the main body part (1a1) and the inner side wall of the top plate (1a2) enclose the mounting cavity (1 d).

3. The air inlet joint for distributing the beverage according to claim 2, wherein the valve hole (1a3) is a through hole which is perpendicular to the top plate (1a2) and penetrates through the top plate (1a2), the inner side wall of the top plate (1a2) is further provided with a cylindrical plug part (1a4), and the lower end of the air inlet valve core (4) penetrates through the valve hole (1a3) and extends into an inner hole of the plug part (1a 4).

4. A gas inlet connection for dispensing beverage according to claim 3, characterized in that the connection body (1) further comprises a connection cover (1b) fixed on the outer side wall of the top plate (1a2), the gas inlet passage (2) comprises a gas inlet chamber (21) on the connection cover (1b) and a gas inlet channel (22) opened on the gas inlet valve core (4), the gas inlet chamber (21) is located on the upper part of the valve hole (1a3), the connection cover (1b) has a gas inlet nozzle (1b1) on the outer wall, and the gas inlet channel (22) is communicated with the gas inlet nozzle (1b1) through the gas inlet chamber (21).

5. The air inlet connector for dispensing beverage according to claim 4, wherein the sidewall of the insertion part (1a4) is formed with a first relief notch (1a5), and the sidewall of the connector cover (1b) is formed with a second relief notch (1a6) opposite to the first relief notch (1a 5).

6. Air inlet tap for dispensing beverage according to claim 4 or 5, characterized in that the resilient member (3) is a spring, that the resilient member (3) is arranged in the air inlet chamber (21), that the upper end of the resilient member (3) abuts against the top inner wall of the air inlet chamber (21), and that the lower end of the resilient member (3) abuts against the top surface of the air inlet valve spool (4).

7. Air inlet connection for dispensing beverages according to claim 4 or 5, characterized in that the air inlet valve core (4) is cylindrical, the air inlet channel (22) comprises an axial air inlet hole (22a) arranged axially along the air inlet valve core (4) and a radial through hole (22b) arranged radially along the air inlet valve core (4), the upper end of the axial air inlet hole (22a) is closed and the lower end has an opening located on the lower end face of the air inlet valve core (4), the inlet of the radial through hole (22b) is located on the peripheral wall of the air inlet valve core (4) and the outlet is in communication with the axial air inlet hole (22 a).

8. The air inlet joint for dispensing beverage according to claim 7, wherein a first sealing ring (41) and a second sealing ring (42) are sleeved on the outer peripheral wall of the air inlet valve core (4), the first sealing ring (41) and the second sealing ring (42) are respectively positioned at the upper side and the lower side of the radial through hole (22b), the second sealing ring (42) is always kept sealed with the inner wall of the valve hole (1a3), the first sealing ring (41) forms a seal with the inner wall of the valve hole (1a3) after the elastic member (3) presses the air inlet valve core (4) to move downwards, the first sealing ring (41) is separated from the inner wall of the valve hole (1a3) after the air inlet valve core (4) moves upwards, and the inlet of the radial through hole (22b) is communicated with the air inlet cavity (21).

9. A gas inlet connection for dispensing beverages according to claim 7, characterized in that two third sealing rings (43) are sleeved on the peripheral wall of the lower end of the gas inlet valve core (4), and the two third sealing rings (43) are arranged at intervals along the axial direction of the gas inlet valve core (4).

10. Air inlet tap for dispensing beverage according to claim 1, characterized in that the upper end of the air inlet valve core (4) is provided with a radially protruding limit flange (44), and the elastic element (3) presses the air inlet valve core (4) to move downwards, so that the limit flange (44) abuts against the edge of the upper opening of the valve hole (1a 3).

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