A gas cylinder sealing container with an improved stopper venting structure

Abstract

This invention discloses a gas cylinder sealing container with an improved stopper venting structure, comprising a valve seat assembly and a gas cylinder and a movable rod mounted on the valve seat assembly. The valve seat assembly includes a fixed seat, a bottle opener seat, a floating piston seat, a needle-piercing assembly, and an exhaust valve core. The bottle opener seat has a cylindrical structure and is provided with a cylindrical piston chamber. The piston chamber communicates with a placement chamber through a first exhaust port and with the inner cavity of the container through a second exhaust port. The movable rod can slide up and down through the floating piston seat, and its bottom can approach and move the exhaust valve core to open the first exhaust port. In this invention, when the compressed gas from the gas cylinder is delivered to the area below the piston chamber through the first exhaust port, a certain amount of gas pressure needs to accumulate below the floating piston seat before pushing the floating piston seat upward and compressing the return spring. This process has a relatively slow response time and a certain degree of delay, providing reaction time for the pressure relief plug and reducing the safety risk of container rupture.

Description

Technical Field

[0001] This invention relates to the field of storage container technology, and in particular to a gas cylinder sealing container with an improved stopper venting structure. Background Technology

[0002] Currently, conventional beer cans consist of a can body, a dispensing valve inserted into the lower part of the can body's outer wall, and a gas valve fixed to the top of the can body. Beer is stored inside the can. When beer is needed, the gas valve is first opened, then the dispensing valve is pulled out of the can, and rotated to allow the beer to flow out. The beer flows out naturally at a relatively slow rate, and when the beer is returned after use, air can easily be introduced. Air containing bacteria can affect the taste and quality of subsequent beers in the can, making it prone to spoilage. To address this, a sealed beer can has been introduced to the market. This includes a metal can body and a valve cap structure with a high-pressure gas cylinder. By operating the valve cap to open the gas cylinder, compressed gas from the cylinder enters the can body, opening the dispensing section. The beer inside the can is then forced into a delivery pipe and flows out from the dispensing section. Opening is convenient and effortless. By intermittently pressing the valve cap, compressed gas from the cylinder can be intermittently replenished into the can body. For example, patent number CN202020109757.5 discloses a jug for holding liquids and patent number CN202311264370.1 discloses a beer can.

[0003] However, in actual use, the above-mentioned storage containers have been found to have the following drawbacks:

[0004] After the compressed gas cylinder is punctured and opened in the placement chamber, pressing the valve cap moves the moving parts and exhaust core, thus opening the gas passage between the cylinder and the inner cavity of the can. This intermittently replenishes the compressed gas in the cylinder to the inner cavity of the can, increasing the pressure and forcing the beer out through the dispensing section. However, if the user does not open the dispensing section promptly and presses the valve cap for an extended period, the compressed gas output from the cylinder is rapid. If the pressure relief plug fails to respond in time, the pressure on the inner wall of the can rises rapidly, posing a safety risk of can rupture. Therefore, further improvements are needed. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a gas cylinder sealing container with an improved stopper venting structure.

[0006] One embodiment of the present invention provides a technical solution to solve its technical problem: a gas cylinder sealing container with an improved stopper venting structure, comprising a valve seat assembly and a gas cylinder and a movable rod mounted on the valve seat assembly; the valve seat assembly comprises a fixed seat, a bottle opener seat, a floating piston seat, a needle-punching assembly, and an exhaust valve core;

[0007] The fixing seat is installed at the opening of the tank; the gas cylinder is installed in the placement cavity; the bottle opener is installed at the fixing seat and the gas cylinder can be opened by the needle-punching assembly;

[0008] The bottle opener is provided with a cylindrical piston chamber; the piston chamber is connected to the placement chamber through a first vent hole and to the inner cavity of the can through a second vent hole; the vent valve core is installed in the first vent hole;

[0009] The floating piston seat is slidably mounted on the piston chamber; the floating piston seat has an exhaust communication hole; the floating piston seat is equipped with a piston return spring, which allows the floating piston seat to move close to the bottom of the fixed seat; when the floating piston seat moves upward, the exhaust communication hole can connect to the first exhaust hole and the second exhaust hole.

[0010] The movable rod can slide up and down through the floating piston seat, and its bottom can approach and move the exhaust valve core to open the first exhaust port;

[0011] The piston return spring is disposed above the floating piston seat. A spring mounting groove is provided above the floating piston seat; a spring blocking ring platform is provided above the movable rod; the piston return spring is installed between the spring mounting groove and the spring blocking ring platform.

[0012] Optionally, the movable rod is provided with a first sealing groove for installing an exhaust sealing component; when the floating piston seat moves upward and the exhaust communication hole is located at or past the exhaust sealing component, the exhaust sealing component can block the connection between the exhaust communication hole and the first exhaust hole.

[0013] Optionally, a cap is installed above the bottle opener; the cap can block the piston gas chamber; the cap can abut against and restrict the upward movement of the movable rod and the floating piston seat.

[0014] Optionally, when the movable rod moves upward and abuts against the cover, the height of the first sealing groove is higher than the highest position of the first vent hole.

[0015] Optionally, the piston chamber includes an upper piston chamber and a lower piston chamber; the floating piston seat includes an upper piston seat and a lower piston seat; the aperture of the upper piston chamber is larger than that of the lower piston chamber; the exhaust communication hole is disposed in the lower piston seat, the first exhaust hole is disposed in the lower piston chamber, and the second exhaust hole is disposed in the upper piston chamber;

[0016] The upper piston seat can slide up and down in the upper piston chamber and abut against the upper edge of the lower piston chamber; the lower piston seat can slide up and down in the lower piston chamber and forms an exhaust pressure storage chamber at a distance from the first exhaust hole below.

[0017] Optionally, the outer periphery of the upper piston seat is provided with a second sealing groove for fitting an upper sealing ring; the upper sealing ring abuts between the upper piston chamber and the upper piston seat; the outer periphery of the lower piston seat is provided with a third sealing groove for fitting a lower sealing ring; the lower sealing ring abuts between the lower piston chamber and the lower piston seat.

[0018] Optionally, two third sealing grooves are provided at intervals in the vertical direction of the lower piston seat; the exhaust communication hole is provided between the two third sealing grooves; when the upper third sealing groove crosses the upper edge of the lower piston chamber, the exhaust communication hole connects to the second exhaust hole.

[0019] The beneficial effects of this invention are as follows: When the movable rod is pressed, the bottom of the movable rod can move the exhaust valve core and open the first exhaust port; subsequently, compressed gas accumulates in the local piston gas chamber below the floating piston seat, and the gas pressure in this area rises, thereby pushing the floating piston seat upward. After the floating piston seat rises to a certain height, the exhaust communication hole can connect the first exhaust port and the second exhaust port; thus, the compressed gas below the floating piston seat is sent into the tank; subsequently, the gas pressure below the floating piston seat decreases, and under the action of the piston return spring, the floating piston seat moves downward to reset, and the exhaust communication hole cannot connect the first exhaust port and the second exhaust port. In this invention, when the compressed gas from the gas cylinder is sent to the area below the piston gas chamber through the first exhaust port, a certain amount of gas pressure needs to accumulate below the floating piston seat before it can push the floating piston seat upward and compress the return spring. This process has a relatively slow response time and a certain degree of delay, providing reaction time for the pressure relief plug and reducing the safety risk of tank rupture. Furthermore, the downward force of the piston return spring can achieve the downward reset of the floating piston seat, while the upward force can achieve the upward reset of the movable rod. A single piston return spring can realize the reset operation of both, making the structure compact and reasonable.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the structure of a sealed container using the plug-and-vent structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the plug structure in this invention;

[0024] Figure 3 for Figure 2 Schematic diagram of the middle fixed seat;

[0025] Figure 4 for Figure 2 Schematic diagram of the structure of the center-opening bottle holder;

[0026] Figure 5 for Figure 2 Schematic diagram of the floating piston seat;

[0027] Figure 6 for Figure 2 A schematic diagram of the structure with the middle movable rod pressed down, the floating piston seat not moved up and the exhaust communication hole not open;

[0028] Figure 7 for Figure 2 A schematic diagram of the structure with the middle movable rod pressed down, the floating piston seat moved up, and the exhaust communication hole not open;

[0029] Figure 8 for Figure 2 A schematic diagram of the structure with the moving rod reset and moved upward, the floating piston seat moved upward, and the exhaust communication hole open.

[0030] Explanation of key component symbols:

[0031] 10. Gas cylinder; 20. Movable rod; 21. First sealing groove; 22. Exhaust sealing component; 23. Spring blocking ring platform; 30. Fixed seat; 31. Placement cavity; 32. Tank extension air passage; 40. Bottle opener; 41. Piston chamber; 411. Upper piston chamber; 412. Lower piston chamber; 42. First exhaust port; 43. Second exhaust port; 44. Exhaust pressure storage chamber; 50. Floating piston seat; 51. Exhaust connecting hole; 52. Piston return spring; 53. Spring mounting groove; 54. Upper piston seat; 55. Lower piston seat; 56. Second sealing groove; 57. Upper sealing ring; 58. Third sealing groove; 59. Lower sealing ring; 60. Needle-punching assembly; 70. Exhaust valve core; 80. Cap. Detailed Implementation

[0032] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0033] In the description of this invention, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are orientations or positional relationships based on the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] In this invention, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integrally formed connection; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0036] Example

[0037] Reference Figures 1 to 8 The present invention proposes a gas cylinder sealing container with an improved plug venting structure, comprising a valve seat assembly and a gas cylinder 10 and a movable rod 20 mounted on the valve seat assembly; the valve seat assembly includes a fixed seat 30, a bottle opener 40, a floating piston seat 50, a needle-punching assembly 60 and an exhaust valve core 70.

[0038] The fixing seat 30 is installed at the opening of the tank body; the fixing seat 30 is provided with a placement cavity 31 for placing the gas cylinder 10; the bottle opener 40 is installed on the fixing seat 30 and cooperates with the top of the gas cylinder 10, and the gas cylinder 10 can be opened by the needle piercing assembly 60.

[0039] The bottle opener 40 is provided with a cylindrical piston chamber 41; the piston chamber 41 is connected to the placement chamber 31 through the first exhaust port 42 and to the inner cavity of the can through the second exhaust port 43; the exhaust valve core 70 is installed in the first exhaust port 42.

[0040] The floating piston seat 50 is slidably mounted on the piston chamber 41; the floating piston seat 50 is provided with an exhaust communication hole 51; the floating piston seat 50 is equipped with a piston return spring 52, which can bring the floating piston seat 50 close to the bottom of the fixed seat 30; when the floating piston seat 50 moves upward, the exhaust communication hole 51 can connect to the first exhaust hole 42 and the second exhaust hole 43.

[0041] The movable rod 20 can slide up and down through the floating piston seat 50, and its bottom can approach and move the exhaust valve core 70 to open the first exhaust port 42.

[0042] The piston return spring 52 is positioned above the floating piston seat 50. A spring mounting groove 53 is positioned above the floating piston seat 50; a spring blocking ring platform 23 is positioned above the movable rod 20; and the piston return spring 52 is installed between the spring mounting groove 53 and the spring blocking ring platform 23.

[0043] In this invention, when the movable rod 20 is pressed, the bottom of the movable rod 20 moves the exhaust valve core 70 and opens the first exhaust port 42; subsequently, compressed gas accumulates in the local piston gas chamber 41 below the floating piston seat 50, and the gas pressure in this area rises, thereby pushing the floating piston seat 50 to move upward. After the floating piston seat 50 moves upward to a certain height, the exhaust connecting hole 51 can connect the first exhaust port 42 and the second exhaust port 43; thereby sending the compressed gas below the floating piston seat 50 into the tank; subsequently, the gas pressure below the floating piston seat 50 decreases, and under the action of the piston return spring 52, the floating piston seat 50 moves downward to reset, and the exhaust connecting hole 51 cannot connect the first exhaust port 42 and the second exhaust port 43. In this invention, when the compressed gas from the gas cylinder 10 is delivered to the area below the piston chamber 41 through the first exhaust port 42, a certain amount of gas pressure needs to accumulate below the floating piston seat 50 before it can push the floating piston seat 50 upward and compress the return spring. This process has a relatively slow response time and a certain degree of delay, providing time for the pressure relief plug to react and reducing the safety risk of the cylinder rupture. Furthermore, the downward force of the piston return spring 52 can reset the floating piston seat 50 downward, and the upward force can reset the movable rod 20 upward. A single piston return spring 52 can achieve both reset operations, resulting in a compact and reasonable structure.

[0044] In this embodiment, the movable rod 20 is provided with a first sealing groove 21 for installing the exhaust sealing component 22. When the floating piston seat 50 moves upward and the exhaust communication hole 51 is located at or past the exhaust sealing component 22, the exhaust sealing component 22 can block the connection between the exhaust communication hole 51 and the first exhaust hole 42. When the user forgets to release the movable rod 20, causing the movable rod 20 to remain in the downward position, pushing the exhaust valve core 70, the first sealing groove 21 can be used to block the connection between the exhaust communication hole 51 or the gap between the lower part of the exhaust movable rod 20 and the floating piston seat 50, thereby preventing the compressed gas below the floating piston seat 50 from being sent into the tank. Instead, the compressed gas is kept below the floating piston seat 50 and the piston air chamber 41, avoiding the risk of explosion caused by rapid inflation of the tank.

[0045] Please see Figure 3 The mounting base 30 is provided with a tank extension air passage 32 extending downward toward the tank body, which is connected to the second exhaust port 43.

[0046] In this embodiment, a cap 80 is installed above the bottle opener 40; the cap 80 can block the piston gas chamber 41; the cap 80 can abut against and restrict the upward movement of the movable rod 20 and the floating piston seat 50. Specifically, the cap 80 is threadedly locked above the bottle opener 40.

[0047] Specifically, when the movable rod 20 moves upward and abuts against the cover 80, the height of the first sealing groove 21 is higher than the highest position of the first exhaust hole 42. That is, when the movable rod 20 returns to its original position and abuts against the cover 80, the first sealing groove 21 and the exhaust sealing component 22 cannot block the conduction of the exhaust connecting hole 51; the exhaust connecting hole 51 can connect the first exhaust hole 42 and the second exhaust hole 43, and since the movable rod 20 is now far away from the exhaust valve core 70, the compressed gas cylinder 10 cannot continuously fill the tank, which can effectively prevent the risk of rapid filling and explosion of the tank.

[0048] In this embodiment, the piston return spring 52 is positioned above the floating piston seat 50. The upper-mounted piston return spring 52 is easy to install; it can be installed during the threaded tightening of the cap 80.

[0049] Preferably, a spring mounting groove 53 is provided above the floating piston seat 50; a spring blocking ring platform 23 is provided above the movable rod 20; and the piston return spring 52 is installed between the spring mounting groove 53 and the spring blocking ring platform 23. In the specific installation process, first, the floating piston seat 50 is inserted into the piston chamber 41, then the piston return spring 52 is installed in the spring mounting groove 53, and the pressure rod is inserted into the floating piston seat 50 and pressed against the top of the piston return spring 52. Then, the cap 80 is threaded and tightened, thus completing the assembly of the movable rod 20, the piston return spring 52, and the floating piston seat 50. Furthermore, the downward elastic force of the piston return spring 52 can achieve the downward reset of the floating piston seat 50, and the upward elastic force can achieve the upward reset of the movable rod 20. A single piston return spring 52 can achieve the reset operation of both, resulting in a compact and reasonable structure.

[0050] In this embodiment, the spring force of the piston return spring 52 is adjusted to match the gas pressure of the compressed gas cylinder 10. When the gas in the piston chamber 41 is discharged into the tank, the gas pressure drops to the design pressure value, and the piston return spring 52 can then press down on the floating piston seat 50 to achieve reset. This design pressure value can be achieved by adjusting the piston return spring 52, thereby matching different tanks and contents, enabling the installation of tanks that can meet different tank pressure requirements, and matching the plug structure for use.

[0051] In some embodiments, the piston chamber 41 includes an upper piston chamber 411 and a lower piston chamber 412; the floating piston seat 50 includes an upper piston seat 54 and a lower piston seat 55; the aperture of the upper piston chamber 411 is larger than that of the lower piston chamber 412; an exhaust communication hole 51 is disposed in the lower piston seat 55, a first exhaust hole 42 is disposed in the lower piston chamber 412, and a second exhaust hole 43 is disposed in the upper piston chamber 411;

[0052] The upper piston seat 54 can slide up and down in the upper piston chamber 411 and abut against the upper edge of the lower piston chamber 412; the lower piston seat 55 can slide up and down in the lower piston chamber 412 and forms an exhaust pressure storage chamber 44 at a distance from the first exhaust port 42 below.

[0053] The cylindrical structure, which is wider at the top and narrower at the bottom, allows the lower part of the floating piston seat 50 to be restricted to its lowest position by abutting against the upper edge of the lower piston chamber 412; and the lower part forms an exhaust pressure storage chamber 44 with the first exhaust port 42 at an interval, which can be used to initially buffer and store the compressed gas sent out by the first exhaust port 42.

[0054] In this embodiment, the outer periphery of the upper piston seat 54 is provided with a second sealing groove 56 for embedding the upper sealing ring 57; the upper sealing ring 57 abuts between the upper piston chamber 411 and the upper piston seat 54; the outer periphery of the lower piston seat 55 is provided with a third sealing groove 58 for embedding the lower sealing ring 59; the lower sealing ring 59 abuts between the lower piston chamber 412 and the lower piston seat 55. Through the second sealing groove 56 and the third sealing groove 58, the floating piston seat 50 can be sealed to the upper piston chamber 411 and the lower piston chamber 412 respectively, so that high-pressure gas can only be output from the outlet pressure storage chamber 44, sequentially through the gap between the movable rod 20 and the floating piston seat 50, the exhaust communication hole 51 and the second exhaust hole 43 to the inner cavity of the tank.

[0055] Furthermore, two third sealing grooves 58 are spaced apart in the vertical direction of the lower piston seat 55; the exhaust connecting hole 51 is located between the two third sealing grooves 58; when the upper third sealing groove 58 passes the upper edge of the lower piston chamber 412, the exhaust connecting hole 51 connects to the second exhaust hole 43. Through the upper and lower third sealing grooves 58 and the lower sealing ring 59, the exhaust connecting hole 51 can only conduct compressed gas between the upper and lower third sealing grooves 58, in conjunction with the first sealing groove 21 of the movable rod 20; so that the floating piston seat 50 can only conduct the first exhaust hole 42 and the second exhaust hole 43 when the movable rod 20 is in the state of moving upward and resetting away from the exhaust valve core 70, and the upper third sealing groove 58 of the floating piston seat 50 passes the upper edge of the lower piston chamber 412; after the gas pressure in the exhaust storage chamber 44 decreases, under the action of the piston reset spring 52, the floating piston seat 50 moves downward, which can quickly close the conduction state of the exhaust connecting pipe, realizing the intermittent supply of compressed gas with a fixed quantity and pressure.

[0056] The specific work process is as follows:

[0057] Please see Figure 6 When the movable lever 20 is pressed, the bottom of the movable lever 20 can push open the exhaust valve core 70, so that the placement chamber 31 is connected to the piston air chamber 41. The compressed gas is supplemented to the outlet pressure storage chamber 44 below the piston air chamber 41. When it is transported to the second exhaust port 43 through the gap between the movable lever 20 and the floating piston seat 50, it is blocked by the upper third sealing groove 58 and the lower seal, and cannot be conducted to the second exhaust port 43. The gas pressure in the outlet pressure storage chamber is greater than the elastic force of the piston return spring 52, which can make the floating piston seat 50 move upward.

[0058] Please see Figure 7If the pressure on the movable rod 20 is not released, after the floating piston seat 50 rises to a certain height or to its maximum height, the exhaust communication hole 51 is at or beyond the first sealing groove 21 and the exhaust plug 22; at this time, the gap between the movable rod 20 and the floating piston seat 50 is sealed by the first sealing groove 21 and the exhaust plug 22; compressed gas cannot be output to the tank, effectively preventing the risk of rapid inflation and explosion of the tank.

[0059] Please see Figure 8 If the pressure on the movable rod 20 is released, the movable rod 20 moves upward and resets. At this time, the first sealing groove 21 cannot block the exhaust communication hole 51 or the gap between the movable rod 20 and the floating piston seat 50. Furthermore, the upper third sealing groove 58 passes over the upper edge of the lower piston chamber 412, and the exhaust communication hole 51 connects to the second exhaust hole 43, which can replenish the gas in the exhaust pressure storage chamber 44 into the tank. At the same time, the first exhaust hole 42 is blocked. After replenishing a certain pressure of gas, the floating piston seat 50 will move downward and reset, closing the exhaust communication hole 51 again.

[0060] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A gas cylinder sealing container with an improved stopper venting structure, comprising a valve seat assembly and a gas cylinder (10) and a movable rod (20) mounted on the valve seat assembly; characterized in that, The valve seat assembly includes a fixed seat (30), a bottle opener seat (40), a floating piston seat (50), a needle-punching assembly (60), and an exhaust valve core (70); The fixing seat (30) is installed at the opening of the tank; the gas cylinder (10) is installed in the placement cavity (31); the bottle opener (40) is installed on the fixing seat (30) and can open the gas cylinder (10) through the needle-punching assembly (60); The bottle opener (40) is provided with a cylindrical piston air chamber (41); the piston air chamber (41) is connected to the placement chamber (31) through a first exhaust port (42) and to the inner cavity of the can through a second exhaust port (43); the exhaust valve core (70) is installed in the first exhaust port (42); The floating piston seat (50) is slidably mounted on the piston chamber (41); the floating piston seat (50) has an exhaust communication hole (51); the floating piston seat (50) is equipped with a piston return spring (52), which allows the floating piston seat (50) to move closer to the bottom of the fixed seat (30); when the floating piston seat (50) moves upward, the exhaust communication hole (51) can connect the first exhaust hole (42) and the second exhaust hole (43); The movable rod (20) can slide up and down through the floating piston seat (50), and its bottom can approach and move the exhaust valve core (70) to open the first exhaust hole (42); The piston return spring (52) is disposed above the floating piston seat (50); a spring mounting groove (53) is disposed above the floating piston seat (50); a spring blocking ring platform (23) is disposed above the movable rod (20); the piston return spring (52) is installed between the spring mounting groove (53) and the spring blocking ring platform (23).

2. The gas cylinder sealing container with an improved stopper venting structure according to claim 1, characterized in that: The movable rod (20) is provided with a first sealing groove (21) for installing the exhaust sealing member (22); when the floating piston seat (50) moves upward and the exhaust communication hole (51) is located at or past the exhaust sealing member (22), the exhaust sealing member (22) can block the communication between the exhaust communication hole (51) and the first exhaust hole (42).

3. The gas cylinder sealing container with an improved stopper venting structure according to claim 2, characterized in that: A cap (80) is installed above the bottle opener (40); the cap (80) can block the piston air chamber (41); the cap (80) can abut against and restrict the upward movement of the movable rod (20) and the floating piston seat (50).

4. The gas cylinder sealing container with an improved stopper venting structure according to claim 3, characterized in that: When the movable rod (20) moves upward and abuts against the cover (80), the height of the first sealing groove (21) is higher than the highest position of the first vent hole (42).

5. The gas cylinder sealing container with an improved stopper venting structure according to claim 1, characterized in that: The piston chamber (41) includes an upper piston chamber (411) and a lower piston chamber (412); the floating piston seat (50) includes an upper piston seat (54) and a lower piston seat (55); the aperture of the upper piston chamber (411) is larger than that of the lower piston chamber (412); the exhaust communication hole (51) is disposed on the lower piston seat (55), the first exhaust hole (42) is disposed on the lower piston chamber (412), and the second exhaust hole (43) is disposed on the upper piston chamber (411); The upper piston seat (54) can slide up and down in the upper piston chamber (411) and abut against the upper edge of the lower piston chamber (412); the lower piston seat (55) can slide up and down in the lower piston chamber (412) and forms an exhaust pressure storage chamber (44) at a distance from the first exhaust hole (42) below.

6. The gas cylinder sealing container with an improved stopper venting structure according to claim 5, characterized in that: The outer periphery of the upper piston seat (54) is provided with a second sealing groove (56) for fitting an upper sealing ring (57); the upper sealing ring (57) abuts between the upper piston chamber (411) and the upper piston seat (54); the outer periphery of the lower piston seat (55) is provided with a third sealing groove (58) for fitting a lower sealing ring (59); the lower sealing ring (59) abuts between the lower piston chamber (412) and the lower piston seat (55).

7. The gas cylinder sealing container with an improved stopper venting structure according to claim 6, characterized in that: Two third sealing grooves (58) are provided at intervals in the vertical direction of the lower piston seat (55); the exhaust communication hole (51) is provided between the two third sealing grooves (58); when the upper third sealing groove (58) passes the upper edge of the lower piston chamber (412), the exhaust communication hole (51) connects to the second exhaust hole (43).

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