Beverage barrel

Abstract

The utility model provides a beverage barrel, and belongs to the technical field of beverage drinking equipment. The beverage barrel solves the problem that beverage in an existing beverage barrel cannot flow out completely, so that the beverage is easy to remain in the beverage barrel, and waste is caused. The beverage barrel comprises a barrel body, a flexible inner bag located in the barrel body and a liquid outlet valve installed at the top of the barrel body and communicated with a bag cavity of the inner bag, an installation hole is formed in the bottom of the barrel body, a positioning connector is arranged in the barrel body, and the positioning connector is provided with a threaded connection part penetrating out of the barrel body through the installation hole. The screwing part is in threaded connection with a screwing piece, the positioning connector is fixed to the bottom of the barrel body under the action of the screwing piece, the top of the inner bag is fixedly connected to the liquid outlet valve, and the bottom of the inner bag is fixedly connected to the positioning connector. According to the utility model, the beverage can flow out smoothly, and the beverage in the inner bag can flow out completely.

Description

Technical Field

[0001] The utility model belongs to the technical field of beverage drinking equipment and relates to a beverage barrel. Background Art

[0002] A beverage barrel is a tool for holding beverages. The beverage barrel comprises a barrel body with a liquid outlet valve at the barrel mouth. Some beverage barrels have a flexible inner bag in the barrel body. The beverage is placed in the inner bag. The top of the inner bag is connected to the liquid outlet valve. When the liquid outlet valve is opened, the beverage in the inner bag can flow out for people to drink.

[0003] The existing conventional beverage barrel structure is a fully sealed water dispenser disclosed in the patent document (application number: 200620056149.2), which includes a drinking water barrel, which includes a hard barrel body and an inner liner. The inner liner includes a liner body of a flexible film and a liner opening sealed with the liner body. The liner opening is fixed to the neck of the barrel body through a connecting head. A vent is also provided on the barrel body, and a filter structure for blocking impurities is provided in the vent. The drinking water barrel has an air vent on the barrel body so that during the outflow of drinking water, outside air can enter the barrel body through the vent to meet the air intake required for the inner liner to contract and release water, avoid negative pressure in the barrel body, and ensure that the drinking water can flow out smoothly. This type of beverage barrel has the following shortcomings in actual use: Since the inner bag or inner liner is made of a flexible film material, as the drinking water in the inner bag gradually flows out, the inner bag is no longer full of drinking water. Therefore, Fig.10 As shown, the inner bag will collapse downward due to its own weight, forming a bent portion on the inner bag, and the inner walls of the inner bag at the bent portion will fit together, so that the bent portion will block the flow of drinking water, and ultimately cause incomplete outflow of the drinking water in the inner bag.

[0004] At present, in order to solve the above technical problems, those skilled in the art can achieve them by adopting the following conventional technical means:

[0005] 1. Appropriately increase the hardness of the flexible inner bag, such as using an aluminum film bag and increasing the thickness of the aluminum film bag. As the beverage in the inner bag flows out, the inner bag can remain in a vertical state as much as possible, and is not easy to collapse and bend downward, ensuring that the beverage in the inner bag flows out smoothly and completely.

[0006] 2. When a beverage barrel is used to hold beer, a beer spear is installed at the barrel mouth of the beverage barrel, and a dispenser is installed on the beer spear. The dispenser can inject high-pressure gas such as carbon dioxide into the barrel body, compressing the flexible inner bag in the barrel body, so that the beer in the inner bag flows out from the dispenser. Therefore, when a beverage barrel is used to hold beer, technicians in this field will put the beverage barrel upright and rely on the high-pressure gas to compress the inner bag to realize beer discharge, so that the inner bag will not collapse and bend downward, so that the beer in the inner bag can flow out smoothly and completely.

[0007] 3. Add a support member to the flexible inner bag so that after the beverage in the inner bag flows out, the support member can support the inner bag, avoid or reduce the situation where the inner bag collapses and bends downward, and ensure that the beverage in the inner bag flows out smoothly and completely. Summary of the invention

[0008] The utility model aims to solve the above problems in the prior art and proposes a beverage barrel. The utility model solves the problem that the beverage in the prior art beverage barrel does not flow out completely, resulting in residual beverage in the beverage barrel and causing waste.

[0009] The purpose of the utility model can be achieved through the following technical solutions: a beverage barrel, comprising a barrel body, a flexible inner bag located in the barrel body, and a liquid outlet valve installed on the top of the barrel body and connected to the bag cavity of the inner bag, characterized in that a mounting hole is opened at the bottom of the barrel body and a positioning joint is provided in the barrel body, the positioning joint has a threaded portion passing through the barrel body through the mounting hole, a threaded component is threadedly connected to the threaded portion and the positioning joint is fixed to the bottom of the barrel body under the action of the threaded component, the top of the inner bag is fixedly connected to the liquid outlet valve and the bottom of the inner bag is fixedly connected to the positioning joint.

[0010] The beverage barrel is also used in an inverted manner, specifically, the beverage barrel is inverted on a support seat, and a tap is connected to a liquid outlet valve of the beverage barrel. When a beverage needs to be drunk, the tap is opened, and the beverage in the inner bag flows out from the tap.

[0011] Since the top of the inner bag of the beverage barrel is fixedly connected to the liquid outlet valve and the bottom of the inner bag is fixedly connected to the positioning joint, the top and bottom of the inner bag are respectively connected to the liquid outlet valve and the positioning joint to be positioned during the outflow of the beverage. Therefore, no matter how much beverage in the inner bag flows out, the inner bag can remain in a vertical state, and the inner bag will not collapse downward due to its own weight to form a bent part on the inner bag, so that the beverage in the inner bag can flow out smoothly and completely. In this way, on the basis of smooth outflow of the beverage, the beverage residue can be reduced, and the waste of beverage can be effectively avoided.

[0012] In addition, since the beverage in the inner bag is heavy when it is filled with beverages, a large downward pulling force will be generated on the positioning joint when the beverage barrel is inverted, so it is necessary to consider how to ensure that the positioning joint is stably fixed to the bottom of the barrel body. The beverage barrel is provided with a mounting hole at the bottom of the barrel body, and the screw connection part of the positioning joint is passed through the mounting hole and the positioning joint is fixed to the barrel wall at the bottom of the barrel body by means of a screw connection. Compared with methods such as gluing and welding, the structure of the beverage barrel can ensure that the positioning joint has better installation stability, so that when the beverage barrel is inverted to allow the beverage to flow out, the positioning joint can stably pull the bottom of the inner bag to better prevent the inner bag from collapsing downward due to its own weight, and further ensure that the beverage in the inner bag flows out smoothly and completely.

[0013] In the beverage barrel, the upper end of the screw connection portion has a connection flange turned out in the radial direction, and the bottom of the inner bag is connected to the connection flange. By providing the connection flange at the upper end of the screw connection portion, it is easy to connect the positioning joint and the inner bag, and ensure the connection strength and the sealing effect of the connection part, so as to prevent the beverage in the inner bag from leaking from the connection part between the inner bag and the positioning joint during the use of the beverage barrel.

[0014] In the beverage barrel, the positioning joint includes a tubular screw connection portion, in which an air inlet passage is formed to connect the bag cavity of the inner bag with the outside, and the positioning joint is also connected to an air inlet valve core that can control the opening and closing of the air inlet passage. As the beverage in the inner bag flows out, the inner bag will gradually shrink, and by providing the air inlet passage, the outside air can be replenished into the inner bag when the air inlet passage is opened, so as to meet the air intake required when the inner bag shrinks to discharge the beverage, and ensure that the beverage can flow out smoothly, thereby further ensuring that the beverage in the inner bag can flow out completely.

[0015] In the beverage barrel described above, an internal thread is provided on the inner wall of the air inlet channel, and the air inlet valve core includes a plunger portion which is columnar and has an external thread on the outer wall. The plunger portion is threadedly connected to the air inlet channel, and there is a gap between the external thread of the plunger portion and the internal thread of the air inlet channel for gas to pass through. The plunger portion is sleeved with a sealing ring which is sealed against the inner wall of the air inlet channel, and the sealing ring can be separated from the inner wall of the air inlet channel when the plunger portion is screwed out. During the transportation and storage of the beverage barrel, by tightening the plunger portion, the sealing ring is sealed against the inner wall of the air inlet channel, so that the air inlet channel is closed, and the beverage in the inner bag can be prevented from being contaminated. When the plunger portion is screwed out, the sealing ring is separated from the inner wall of the air inlet channel, so that the air inlet channel is opened.

[0016] As mentioned above, the air inlet passage of the positioning joint of the beverage barrel is connected to the inner cavity of the inner bag, so that the outside air enters the inner bag, which further ensures that the beverage flows out completely. However, the outside air cannot be clean, so how to prevent the impurities carried by the outside air from contaminating the beverage in the beverage barrel is also critical. To this end, the beverage barrel adopts an unconventional air inlet valve core structure. Specifically, the air inlet passage and the plunger part of the air inlet valve core in the air inlet valve core structure are connected by threads. The air inlet valve core and the positioning joint are both plastic parts, and the two do not use very precise thread matching. In this way, there is a gap between the external thread and the internal thread for gas to pass through. When the plunger part is screwed out, the air can enter the bag cavity of the inner bag through the gap between the internal thread and the external thread, but the impurities in the air are difficult to pass through and are blocked outside, so that the outside air can be prevented from contaminating the beverage in the inner bag as much as possible, thereby improving the taste and shelf life of the beverage.

[0017] In the beverage barrel, the air inlet valve core is a plastic cap, which is disposed in the lower port of the air inlet passage, and a dustproof film is also disposed in the air inlet passage. The plastic cap is low in cost and easy to operate. After the plastic cap is opened, the lower port of the air inlet passage is basically open, and the dustproof film in the air inlet passage can allow air to pass through, but impurities in the air are difficult to pass through the dustproof film and are blocked outside, thereby preventing the outside air from polluting the beverage in the inner bag as much as possible, and improving the taste and shelf life of the beverage.

[0018] In the beverage barrel described above, the lower end of the plunger portion has a radially extending limiting flange, the lower end face of the threaded portion abuts against the limiting flange, an annular groove adjacent to the limiting flange is provided on the outer wall of the plunger portion, the sealing ring is sleeved in the annular groove and the sealing ring abuts against the inner edge of the lower port of the air inlet channel. The lower end face of the threaded portion abuts against the limiting flange, which can limit the distance that the air inlet valve core is screwed into the air inlet channel of the threaded portion. The annular groove can facilitate the installation of the sealing ring, and since the sealing ring abuts against the inner edge of the lower port of the air inlet channel, when the plunger portion is screwed outward, the sealing ring can be separated from the inner wall of the air inlet channel, thereby making the operation process of opening and closing the air inlet valve core more convenient.

[0019] In the beverage barrel, the outer wall of the bottom of the barrel body has an inwardly concave mounting groove, and the inner wall of the bottom of the barrel body has a convex portion corresponding to the mounting groove, the mounting hole is formed on the groove bottom of the mounting groove, and the upper end surface of the screw connector abuts against the groove bottom of the mounting groove. The installation groove can not only improve the anti-dumping ability of the beverage barrel when it is placed upright, but also can place the screw connector, the air intake valve core and other components in the installation groove, so as to avoid the impact of the screw connector, the air intake valve core and other components during the use, stacking and placement of the beverage barrel.

[0020] In the beverage barrel, an elastic washer is sleeved on the threaded connection part, and the elastic washer is sandwiched between the connection flange of the positioning joint and the upper end surface of the protruding part. When the threaded connection part is tightened, the threaded connection part has a tendency to be pulled outward, so that the elastic washer can be compressed and deformed, so that the threaded connection part can be more stable under vibration and the risk of loosening can be reduced.

[0021] In the beverage barrel, the lower end of the plunger is fixedly connected to a pull ring, and the pull ring has a force-carrying portion that can be deformed and tilted. When the operator pinches the force-carrying portion, the pull ring can be rotated more labor-savingly and conveniently. In addition, the force-carrying portion is formed by the deformation and tilting of the pull ring, which has the advantage of low manufacturing cost.

[0022] In the beverage barrel, a plug hole is provided on the lower end surface of the plunger, and the pull ring has a plug part that is plugged and fixed in the plug hole. This structure enables the pull ring and the plunger to be plugged and fixed, so that the pull ring has the advantages of reliable connection and easy installation.

[0023] Compared with the prior art, this beverage barrel has the following advantages:

[0024] 1. In the beverage barrel, since the top of the inner bag is fixedly connected to the liquid outlet valve and the bottom of the inner bag is fixedly connected to the positioning joint, the inner bag can maintain a vertical state during the outflow of the beverage, and the inner bag will not collapse downward due to its own weight to form a bent part on the inner bag, so that the beverage in the inner bag can flow out smoothly and completely, thereby reducing beverage residues while ensuring smooth outflow of the beverage, and effectively avoiding beverage waste.

[0025] 2. As the beverage in the inner bag flows out, the inner bag will gradually shrink. By providing an air inlet channel, the outside air can be replenished into the inner bag when the air inlet channel is opened, satisfying the air intake required when the inner bag shrinks to discharge the beverage, ensuring that the beverage can flow out smoothly, thereby further ensuring that the beverage in the inner bag can flow out completely.

[0026] 3. When the inner bag is filled with beverages, the beverages in the inner bag have a large weight, so when the beverage barrel is inverted, a large downward pulling force will be generated on the positioning joint. The barrel body is usually made of plastic material and the barrel wall is thin, so it is necessary to consider how to ensure that the positioning joint is stably fixed to the bottom of the barrel body. The beverage barrel has a mounting hole at the bottom of the barrel body, and the screw connection part of the positioning joint is passed through the mounting hole and the positioning joint is fixed to the barrel wall at the bottom of the barrel body by means of the screw connection. This structure can ensure that the positioning joint has good installation stability even if the barrel body is a plastic barrel with a thin barrel wall. Therefore, when the beverage barrel is inverted to allow the beverage to flow out, the positioning joint can stably pull the bottom of the inner bag to better prevent the inner bag from collapsing downward due to its own weight, so that the beverage in the inner bag can flow out smoothly and completely. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a cross-sectional view of this beverage barrel.

[0028] Figure 2 It is a cross-sectional view of the bottom of the beverage barrel.

[0029] Figure 3 This is an exploded view of the bottom parts of the beverage barrel.

[0030] Figure 4 It is a three-dimensional structural diagram of the intake valve core.

[0031] Figure 5 It is a three-dimensional structural diagram of the pull ring.

[0032] Figure 6 It is a cross-sectional view of the beverage barrel being inverted during use.

[0033] Figure 7 yes Figure 6 Enlarged view of the bottom of the barrel.

[0034] Figure 8 yes Figure 7 Enlarged view of point A in the middle.

[0035] Fig. 9 It is a cross-sectional view of the bottom of the barrel body of the second embodiment of the beverage barrel.

[0036] Fig.10 It is a schematic diagram of the inner bag of an existing beverage barrel after it collapses downward.

[0037] In the figure, 1, barrel body; 1a, installation groove; 1b, raised part; 2, inner bag; 3, liquid outlet valve; 4, installation hole; 5, positioning joint; 51, screw connection part; 52, connecting flange; 53, air inlet channel; 6, screw connection; 7, air inlet valve core; 71, plunger part; 711, limiting flange; 712, annular groove; 713, plug-in hole; 72, sealing ring; 8, dustproof film; 9, elastic gasket; 10, pull ring; 101, force part; 102, plug-in part. DETAILED DESCRIPTION

[0038] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0039] Embodiment 1

[0040] like Figure 1 and Figure 2 As shown, the beverage barrel includes a barrel body 1, a flexible inner bag 2 located in the barrel body 1, and a liquid outlet valve 3 installed on the top of the barrel body 1 and connected to the bag cavity of the inner bag 2. A mounting hole 4 is opened at the bottom of the barrel body 1, and a positioning joint 5 is provided in the barrel body 1. The positioning joint 5 has a threaded portion 51 passing through the barrel body 1 through the mounting hole 4. A threaded component 6 is threadedly connected to the threaded portion 51, and the positioning joint 5 is fixed to the bottom of the barrel body 1 under the action of the threaded component 6. The top of the inner bag 2 is fixedly connected to the liquid outlet valve 3, and the bottom of the inner bag 2 is fixedly connected to the positioning joint 5.

[0041] Specifically, Figure 2 and Figure 3As shown, the screw connection part 51 is tubular, the upper end of the screw connection part 51 is located in the barrel body 1 and has a connecting flange 52 turned out in the radial direction, and the bottom of the inner bag 2 is fixedly connected to the connecting flange 52. By providing the connecting flange 52 at the upper end of the screw connection part 51, it is easy to connect the positioning joint 5 with the inner bag 2, and ensure the connection strength and the sealing effect of the connection part. An air intake channel 53 that can connect the bag cavity of the inner bag 2 with the outside is formed in the screw connection part 51 of the positioning joint 5, and an air intake valve core 7 that can control the opening and closing of the air intake channel 53 is also connected to the positioning joint 5.

[0042] like Figure 3 and Figure 4 As shown, an internal thread is provided on the inner wall of the air inlet passage 53, and the air inlet valve core 7 includes a plunger portion 71 which is columnar and has an external thread on the outer wall. The plunger portion 71 is threadedly connected to the air inlet passage 53, and a sealing ring 72 is sleeved on the plunger portion 71. When the plunger portion 71 is tightened, the sealing ring 72 seals against the inner wall of the air inlet passage 53, so that the air inlet passage 53 is closed, thereby preventing the beverage in the inner bag 2 from being contaminated.

[0043] Figure 7 and Figure 8 The structure of the external thread on the plunger portion 71 and the internal thread of the air intake passage 53 is further illustrated. Figure 7 and Figure 8 As shown, the air inlet valve core 7 and the positioning joint 5 are both plastic parts, and the two are not precisely threaded, but a gap is provided between the external thread of the plunger 71 and the internal thread of the air inlet passage 53 for gas to pass through, so that when the air inlet valve core 7 is tightened, the connection reliability of the air inlet valve core 7 and the positioning joint 5 is met. When the air inlet valve core 7 is screwed outward, the sealing ring 72 can be separated from the inner wall of the air inlet passage 53, so that the air inlet passage 53 is opened, and at this time, the air can enter the bag cavity of the inner bag 2 through the gap between the internal thread and the external thread, but the impurities in the air are difficult to pass through and are blocked outside, so that the outside air can be prevented from polluting the beverage in the inner bag 2 as much as possible, thereby improving the taste and shelf life of the beverage.

[0044] like Figure 2 As shown, the lower end of the plunger 71 has a radially protruding limit flange 711, the lower end surface of the screw connection portion 51 abuts against the limit flange 711, and the outer wall of the plunger 71 is provided with an annular groove 712 adjacent to the limit flange 711, and the sealing ring 72 is sleeved in the annular groove 712 and the sealing ring 72 abuts against the inner edge of the lower end of the intake channel 53. Since the sealing ring 72 abuts against the inner edge of the lower end of the intake channel 53, when the plunger 71 is screwed out, the sealing ring 72 can be separated from the inner wall of the intake channel 53, thereby making the operation process of opening and closing the intake valve core 7 more convenient.

[0045] like Figure 2 As shown, the outer wall of the bottom of the barrel body 1 has an inwardly concave mounting groove 1a, and the inner wall of the bottom of the barrel body 1 has a convex portion 1b corresponding to the mounting groove 1a, the mounting hole 4 is opened on the groove bottom of the mounting groove 1a, and the upper end surface of the screw connection member 6 abuts against the groove bottom of the mounting groove 1a. The screw connection portion 51 is sleeved with an elastic washer 9, and the elastic washer 9 is sandwiched between the connection flange 52 of the positioning joint 5 and the upper end surface of the convex portion 1b.

[0046] like Figure 5 As shown, the lower end of the plunger 71 is fixedly connected with a pull ring 10, and the pull ring 10 has a deformable and tiltable force-receiving portion 101. When the operator pinches the force-receiving portion 101, the pull ring 10 can be rotated more labor-savingly and conveniently. Specifically, a plug hole 713 is provided on the lower end surface of the plunger 71, and the pull ring 10 has a plug-in portion 102 that is plugged and fixed in the plug hole 713.

[0047] like Figure 6 As shown, the beverage barrel is also used in an inverted manner. Specifically, the beverage barrel is inverted on the support seat, and the liquid outlet valve 3 of the beverage barrel is connected to a faucet. When a beverage needs to be drunk, Figure 7 As shown, the air inlet channel 53 is opened, and the tap is opened at the same time, and the beverage in the inner bag 2 flows out from the tap. In the beverage barrel, since the top of the inner bag 2 is connected to the liquid outlet valve 3, and the bottom of the inner bag 2 is connected to the positioning joint 5, and the positioning joint 5 is fixedly connected to the bottom of the barrel body 1, during the process of the beverage flowing out, the top and bottom of the inner bag 2 are respectively connected to the liquid outlet valve 3 and the positioning joint 5 to be positioned. Therefore, no matter how much beverage flows out of the inner bag 2, the inner bag 2 can maintain a vertical state, and the inner bag 2 will not collapse downward due to its own weight to form a bent part on the inner bag 2, so that the beverage in the inner bag 2 can flow out smoothly and completely.

[0048] Embodiment 2

[0049] The structure and principle of this embodiment are basically the same as those of the first embodiment, except that: Fig. 9 The air inlet valve core 7 is a plastic cap, which is covered in the lower end of the air inlet channel 53. A dustproof film 8 is also provided in the air inlet channel 53. The plastic cap is low in cost and easy to operate. After the plastic cap is opened, the lower end of the air inlet channel 53 is basically open. At this time, the dustproof film 8 in the air inlet channel 53 can allow air to pass through, but impurities in the air are difficult to pass through the dustproof film 8 and are blocked outside, thereby preventing the outside air from polluting the beverage in the inner bag 2 as much as possible, thereby improving the taste and shelf life of the beverage.

[0050] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0051] Although this article uses more terms such as 1, barrel body; 1a, installation groove; 1b, raised part; 2, inner bag; 3, liquid outlet valve; 4, installation hole; 5, positioning joint; 51, screw connection; 52, connecting flange; 53, air intake channel; 6, screw connection; 7, air intake valve core; 71, plunger; 711, limit flange; 712, annular groove; 713, plug hole; 72, sealing ring; 8, dustproof film; 9, elastic gasket; 10, pull ring; 101, force part; 102, plug connection, etc., it does not exclude the possibility of using other terms. The use of these terms is only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A beverage barrel, comprising a barrel body (1), a flexible inner bag (2) located in the barrel body (1), and a liquid outlet valve (3) installed on the top of the barrel body (1) and connected to the bag cavity of the inner bag (2), characterized in that: The bottom of the barrel body (1) is provided with a mounting hole (4) and a positioning joint (5) is provided inside the barrel body (1). The positioning joint (5) has a threaded portion (51) that passes through the mounting hole (4) and out of the barrel body (1). A threaded member (6) is threadedly connected to the threaded portion (51) and the positioning joint (5) is fixed to the bottom of the barrel body (1) under the action of the threaded member (6). The top of the inner bag (2) is fixedly connected to the liquid outlet valve (3) and the bottom of the inner bag (2) is fixedly connected to the positioning joint (5).

2. The beverage barrel according to claim 1, characterized in that: The upper end of the screw connection portion (51) has a connecting flange (52) turned out in the radial direction, and the bottom of the inner bag (2) is fixedly connected to the connecting flange (52).

3. The beverage barrel according to claim 2, characterized in that: The threaded connection part (51) is tubular, and an air intake passage (53) is formed in the threaded connection part (51) so as to connect the bag cavity of the inner bag (2) with the outside world. The positioning joint (5) is also connected to an air intake valve core (7) which can control the opening and closing of the air intake passage (53).

4. The beverage barrel according to claim 3, characterized in that: The inner wall of the air intake passage (53) is provided with an internal thread, and the air intake valve core (7) comprises a plunger portion (71) which is columnar and has an external thread on its outer wall. The plunger portion (71) is threadedly connected to the air intake passage (53), and a gap is provided between the external thread of the plunger portion (71) and the internal thread of the air intake passage (53) for gas to pass through. The plunger portion (71) is sleeved with a sealing ring (72) which is sealed against the inner wall of the air intake passage (53), and when the plunger portion (71) is screwed outward, the sealing ring (72) can be separated from the inner wall of the air intake passage (53).

5. The beverage barrel according to claim 3, characterized in that: The air intake valve core (7) is a plastic cover cap, which is arranged in the lower end of the air intake channel (53). A dustproof film (8) is also arranged in the air intake channel (53).

6. The beverage barrel according to claim 4, characterized in that: The lower end of the plunger portion (71) has a radially protruding limit flange (711), the lower end surface of the threaded portion (51) abuts against the limit flange (711), the outer wall of the plunger portion (71) is provided with an annular groove (712) adjacent to the limit flange (711), the sealing ring (72) is sleeved in the annular groove (712), and the sealing ring (72) is sealed against the inner edge of the lower end of the air inlet passage (53).

7. The beverage barrel according to claim 2, 3 or 4, characterized in that: The outer wall of the bottom of the barrel body (1) has an inwardly recessed mounting groove (1a), and the inner wall of the bottom of the barrel body (1) has a protruding portion (1b) corresponding to the mounting groove (1a); the mounting hole (4) is formed on the bottom of the mounting groove (1a); and the upper end surface of the screw connection (6) abuts against the bottom of the mounting groove (1a).

8. The beverage barrel according to claim 7, characterized in that: An elastic washer (9) is sleeved on the threaded portion (51), and the elastic washer (9) is clamped between the connecting flange (52) of the positioning joint (5) and the upper end surface of the raised portion (1b).

9. The beverage barrel according to claim 4, characterized in that: The lower end of the plunger part (71) is fixedly connected to a pull ring (10), and the pull ring (10) has a force-carrying part (101) that can be deformed and tilted.

10. The beverage barrel according to claim 9, characterized in that: The lower end surface of the plunger portion (71) is provided with an inserting hole (713), and the pull ring (10) is provided with an inserting portion (102) which is inserted and fixed in the inserting hole (713).

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