A sealed container having a linked plug cover structure

Abstract

The application discloses a sealed container with linkage plug cover structure, which comprises a valve seat assembly, a gas cylinder, a movable rod and a switch assembly installed on the valve seat assembly; the switch assembly comprises a valve plug core and a lever switch; the valve plug core is rotatably arranged in a liquid outlet pipe and used for conducting or closing the liquid outlet pipe; the lever switch comprises an extension arm and a rotating connection part and a gland arranged at two ends of the extension arm; when the gland is close to the top end of the movable rod, the valve plug core rotates and makes the liquid outlet pipe conductive; when the gland is away from the top end of the movable rod, the valve plug core rotates and makes the liquid outlet pipe closed. According to the application, the switch operation process can be linked with the pressing activity of the movable rod; when the gland presses the movable rod, the extension arm has synchronously driven the valve plug core to rotate and open the liquid outlet pipe, high-pressure gas cannot be quickly accumulated in the tank body, and the operation is safer and more reliable.

Description

Technical Field

[0001] This invention relates to the field of storage containers, and in particular to a sealed container with a linked stopper cap 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] 1. 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 gas pressure inside the can and forcing the beer out through the dispensing section. However, if the user does not open the dispensing section in time and presses the valve cap for an extended period, the compressed gas output from the cylinder will be rapid. If the pressure relief plug does not respond in time, the gas pressure inside the can will rise rapidly, posing a safety risk of the can rupturing.

[0005] 2. The dispensing section typically uses a rotary cap mechanism for operation. Opening or closing the dispensing section requires rotating the cap multiple times, which takes a certain amount of time and exhibits a lag, making it difficult to open or close the dispensing section promptly. Furthermore, the tactile feedback during opening and closing is poor. Therefore, further improvements are needed.

[0006] Therefore, further improvements are needed. Summary of the Invention

[0007] 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 sealing container with a linked plug structure.

[0008] One embodiment of the present invention provides a technical solution to solve its technical problem: a sealed container with a linkage plug structure, comprising a valve seat assembly and a gas cylinder, a movable rod, and a switch assembly installed on the valve seat assembly;

[0009] The valve seat assembly is installed at the opening of the tank body; the gas cylinder is installed on the valve seat assembly; the movable rod is installed on the valve seat assembly, and pressing down the movable rod can open the gas passage between the gas cylinder and the inner cavity of the tank body; the valve seat assembly is provided with a liquid outlet pipe;

[0010] The switching assembly includes a valve plug and a lever switch; the valve plug is rotatably disposed inside the outlet pipe for opening or closing the outlet pipe; the lever switch includes an extension arm and a rotating connecting part and a pressure cap disposed at both ends of the extension arm; the rotating connecting part is connected to the valve plug; the pressure cap can rotate with the extension arm to move closer to or further away from the top of the movable lever.

[0011] When the pressure cap approaches the top of the movable rod, the valve plug rotates and opens the outlet pipe; when the pressure cap moves away from the top of the movable rod, the valve plug rotates and closes the outlet pipe; an elastic sealing gasket is provided inside the outlet pipe, and the elastic sealing gasket abuts between the valve plug and the inlet of the outlet pipe.

[0012] Optionally, the valve plug core is spherical or elliptical in shape and has a central channel inside; the outer contour of the valve plug core can block the liquid outlet pipe, and the central channel can open the liquid outlet pipe.

[0013] Optionally, two extension arms are provided, located on opposite sides of the liquid outlet pipe, and the rotating connection part is located below the extension arm; a central connecting beam is provided between the two extension arms.

[0014] Optionally, the central connecting beam is provided with a locking buckle, which can be fastened to the liquid outlet pipe.

[0015] Optionally, the valve seat assembly includes a fixed seat, a bottle opener seat, a floating piston seat, a needle-punching assembly, and an exhaust valve core;

[0016] 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;

[0017] 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;

[0018] 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.

[0019] Optionally, the movable rod is provided with a first sealing groove for installing the 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 air passage.

[0020] Optionally, a cap is installed above the bottle opener; the cap can block the piston chamber; the cap can abut against and restrict the upward movement of the movable rod and the floating piston seat; when the movable rod moves upward and abuts against the cap; the height of the first sealing groove is higher than the highest position of the exhaust communication hole.

[0021] 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;

[0022] 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.

[0023] 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.

[0024] Optionally, a bottle liner is detachably installed below the bottle opener; the placement cavity is disposed in the bottle liner; and the bottle opener is detachably installed on the fixing base.

[0025] The beneficial effects of this invention are as follows: The extended arm with a relatively long torque is combined with a rotating connection part, which is connected to the valve plug core. During the movement of the extended arm, the valve plug core can be rotated simultaneously to control the opening or closing of the liquid outlet pipe. Furthermore, the switching process of this switch structure is linked to the operation of pressing down the movable rod to open the gas passage between the gas cylinder and the tank cavity, forming a coordinated control. When the pressure cap is close to the top of the movable rod, the valve plug core rotates and opens the liquid outlet pipe. At this time, the pressure cap can be pressed to release or replenish gas from the gas cylinder. Simultaneously, the liquid outlet pipe is open, preventing the rapid accumulation of high-pressure gas in the tank. When the pressure cap is away from the top of the movable rod, the valve plug core rotates and closes the liquid outlet pipe. At this time, the pressure cap is far from the top of the movable rod, making it difficult for the user to press the movable rod and reducing the risk of accidental gas replenishment. This invention features a simple and intuitive operation feedback for the extended arm. The valve plug core can be used to open and close the outlet pipe by rotating the arm at a certain angle or half a turn, providing a rapid and timely response. Furthermore, this opening and closing operation is synchronized with the downward movement of the movable rod. When the movable rod is pressed by the pressure cap, the extended arm simultaneously rotates the valve plug core to open the outlet pipe, preventing the rapid accumulation of high-pressure gas inside the tank and enhancing operational safety and reliability. Additionally, the elastic sealing gasket maintains a pressure seal between the outlet pipe's inlet and the outer contour of the valve plug core during rotation.

[0026] 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

[0027] 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:

[0028] Figure 1 This is a schematic diagram of a container using the linkage stopper structure of the present invention;

[0029] Figure 2 for Figure 1 Schematic diagram of the structure of the central linkage plug cover;

[0030] Figure 3 for Figure 2 A half-sectional view of the valve cover switch along the longitudinal direction of the outlet pipe;

[0031] Figure 4 for Figure 2 Cross-sectional view of the valve cover switch at the valve plug core;

[0032] Figure 5 for Figure 2 Schematic diagram of the middle fixed seat;

[0033] Figure 6 for Figure 2Schematic diagram of the structure of the center-opening bottle holder;

[0034] Figure 7 for Figure 2 Schematic diagram of the floating piston seat;

[0035] Figure 8 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;

[0036] Figure 9 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;

[0037] Figure 10 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;

[0038] Figure 11 This is a schematic diagram of the structure of the linkage plug according to another embodiment of the present invention;

[0039] Figure 12 This is a schematic diagram of the structure of the linkage plug according to another embodiment of the present invention.

[0040] Explanation of key component symbols:

[0041] 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 gas 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; 45. Bottle liner; 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; 61. Exhaust valve core; 62. Sealing block; 70. Cover; 80. Liquid outlet pipe; 81. Elastic sealing gasket; 82. Pressure relief plug; 90. Switch assembly; 91. Valve plug core; 92. Toggle switch; 921. Rotary connection part; 922. Extension arm; 923. Middle connecting beam; 924. Locking buckle; 925. Pressure cap. Detailed Implementation

[0042] 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.

[0043] 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.

[0044] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in 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 limiting this invention.

[0045] 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.

[0046] Example

[0047] Reference Figures 1 to 12 The present invention proposes a sealed container with a linkage plug structure, including a valve seat assembly and a gas cylinder 10, a movable rod 20 and a switch assembly 90 installed on the valve seat assembly;

[0048] The valve seat assembly is installed at the opening of the tank body; the gas cylinder 10 is installed on the valve seat assembly; the movable rod 20 is installed on the valve seat assembly, and pressing down the movable rod 20 can open the gas passage between the gas cylinder 10 and the inner cavity of the tank body; the valve seat assembly is provided with a liquid outlet pipe 80;

[0049] The switch assembly 90 includes a valve plug core 91 and a lever switch 92; the valve plug core 91 is rotatably disposed in the outlet pipe 80 for opening or closing the outlet pipe 80; the lever switch 92 includes an extension arm 922 and a rotating connecting part 921 and a pressure cap 925 disposed at both ends of the extension arm 922; the rotating connecting part 921 is connected to the valve plug core 91; the pressure cap 925 can rotate with the extension arm 922 to approach or move away from the top end of the movable lever 20;

[0050] When the pressure cap 925 approaches the top of the movable rod 20, the valve plug 91 rotates and opens the outlet pipe 80; when the pressure cap 925 moves away from the top of the movable rod 20, the valve plug 91 rotates and closes the outlet pipe 80.

[0051] In this invention, an extension arm 922 with a relatively long torque is combined with a rotating connection part 921, which is connected to a valve plug core 91. During the movement of the extension arm 922, the valve plug core 91 can be rotated simultaneously to control the opening or closing of the liquid outlet pipe 80. Furthermore, the switching process of this switch structure is linked to the operation of pressing down the movable rod 20 to open the gas passage between the gas cylinder 10 and the inner cavity of the tank. When the pressure cap 925 is close to the top of the movable rod 20, the valve plug core 91 rotates and opens the liquid outlet pipe 80. At this time, the pressure cap 925 can be pressed to release or replenish gas from the gas cylinder 10. Simultaneously, with the liquid outlet pipe 80 open, high-pressure gas will not accumulate rapidly inside the tank. When the pressure cap 925 is away from the top of the movable rod 20, the valve plug core 91 rotates and closes the liquid outlet pipe 80. At this time, the pressure cap 925 is away from the top of the movable rod 20, making it difficult for the user to press the movable rod 20 and preventing accidental replenishment. This invention provides simple and intuitive feedback from the operation of the extension arm 922. The valve plug core 91 can be used to open and close the outlet pipe 80 by rotating it at a certain angle or half a turn, resulting in a rapid and timely response. Furthermore, this opening and closing operation can be linked to the downward movement of the movable rod 20. When the movable rod 20 is pressed by the pressure cap 925, the extension arm 922 simultaneously rotates the valve plug core 91 to open the outlet pipe 80, preventing the rapid accumulation of high-pressure gas inside the tank and making the operation safer and more reliable. Moreover, the elastic sealing gasket 81 maintains a pressure seal between the inlet of the outlet pipe 80 and the outer contour of the valve plug core 91 during the rotation of the valve plug core 91.

[0052] In this embodiment, the valve plug core 91 is spherical or elliptical in shape and has a central channel inside. The outer contour of the valve plug core 91 can block the outlet pipe 80, while the central channel can open the outlet pipe 80. The cross-section of the outlet pipe 80, which is used to install the valve plug core 91, is elliptical or spherical in shape. The valve plug core 91 can rotate inside the outlet pipe 80 under the rotation of the rotating connection part 921. At the same time, the outer contour of the valve plug core 91 can block the outlet pipe 80, while the central channel can open the outlet pipe 80, thereby realizing the opening and closing control of the outlet pipe 80 channel.

[0053] Specifically, an elastic sealing gasket 81 is provided inside the outlet pipe 80, and the elastic sealing gasket 81 is positioned between the valve plug core 91 and the inlet of the outlet pipe 80. Through the elastic sealing gasket 81, the inlet of the outlet pipe 80 and the outer contour of the valve plug core 91 can be maintained in a pressure-sealing effect during the rotation of the valve plug core 91.

[0054] In this embodiment, two extension arms 922 are provided, located on opposite sides of the outlet pipe 80, and a rotating connection part 921 is located below the extension arms 922; a central connecting beam 923 is provided between the two extension arms 922. Two rotating connection parts 921 can be provided on both sides of the outlet pipe 80 and connected to opposite ends of the valve plug core 91, making the connection between the lever switch 92 and the valve plug core 91 more reliable and stable.

[0055] Specifically, in order to improve the strength of the two extension arms 922, a central connecting beam 923 is provided between the two extension arms 922.

[0056] Furthermore, the central connecting beam 923 is equipped with a locking buckle 924, which can be fastened to the outlet pipe 80. By fastening the central connecting beam 923 to the outlet pipe 80 with the locking buckle 924, the central connecting beam 923 can be kept parallel and attached to the outlet pipe 80, thereby maintaining the closed state of the valve plug core 91, that is, the closed state of the outlet pipe 80, so as to keep the beer can locked and closed.

[0057] In this embodiment, 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 61;

[0058] The fixed base 30 is installed at the opening of the tank body; the gas cylinder 10 is installed in the placement cavity 31; the bottle opener 40 is installed at the fixed base 30, and the gas cylinder 10 can be opened by the needle punch assembly 60;

[0059] 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 61 is installed in the first exhaust port 42.

[0060] 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 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.

[0061] When the movable rod 20 is pressed down, the bottom of the movable rod 20 moves the exhaust valve core 61 and opens the first exhaust port 42; then, 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; then, 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 be accumulated below the floating piston seat 50 before the floating piston seat 50 is pushed upward and the reset spring is compressed. The response time of this process is relatively slow and has a certain delay, which provides reaction time for the pressure relief plug 82 and reduces the safety risk of the tank rupture.

[0062] 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 push rod exhaust valve core 61, the first sealing groove 21 can be used to block the gap between the exhaust communication hole 51 or the lower part of the exhaust movable rod 20 and the floating piston seat 50, thereby blocking the connection between the exhaust communication hole 51 and the first exhaust hole 42. This prevents the compressed gas below the floating piston seat 50 from being sent into the tank, and instead keeps the compressed gas below the floating piston seat 50 and the piston air chamber 41, avoiding the risk of explosion caused by rapid inflation of the tank.

[0063] 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.

[0064] In this embodiment, a cap 70 is installed above the bottle opener 40; the cap 70 can block the piston air chamber 41; the cap 70 can abut against and restrict the upward movement of the movable rod 20 and the floating piston seat 50; specifically, the cap 70 is threadedly locked above the bottle opener 40.

[0065] Specifically, when the movable rod 20 moves upward and abuts against the cover 70, the height of the first sealing groove 21 is higher than the highest position of the exhaust connection hole 51. That is, when the movable rod 20 returns to its original position and abuts against the cover 70, the first sealing groove 21 and the exhaust sealing component 22 cannot block the conduction of the exhaust connection hole 51; the exhaust connection 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 61, the compressed gas cylinder 10 cannot continuously fill the tank, which can effectively prevent the risk of rapid filling and explosion of the tank.

[0066] In this embodiment, the piston return spring 52 is disposed above the floating piston seat 50. The upper-mounted piston return spring 52 is easy to install; it can be installed during the threaded locking of the cap 70.

[0067] 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 movable rod 20 is inserted and installed through the floating piston seat 50, pressing the piston return spring 52 against the top. Then, the cap 70 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 enables the floating piston seat 50 to return downwards, and the upward elastic force enables the movable rod 20 to return upwards. A single piston return spring 52 can achieve the return operation of both, resulting in a compact and reasonable structure.

[0068] 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.

[0069] 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;

[0070] 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.

[0071] 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.

[0072] 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.

[0073] Furthermore, two third sealing grooves 58 are spaced apart in the vertical direction of the lower piston seat 55; the exhaust communication 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 communication 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 communication hole 51 can only conduct compressed gas between the upper and lower third sealing grooves 58. Combined with the first sealing groove 21 of the movable rod 20, 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 upward reset state away from the exhaust valve core 61, 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 outlet pressure 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 communication hole 51, realizing the intermittent supply of compressed gas with a fixed quantity and pressure.

[0074] Please see Figure 2 and Figure 11 The fixing seat 30 can be fastened to the tank opening by snapping or detachably installed at the tank opening by threaded connection.

[0075] The specific work process is as follows:

[0076] Please see Figure 8 When the movable lever 20 is pressed, the bottom of the movable lever 20 can push open the exhaust valve core 61, so that the placement chamber 31 is connected to the piston air chamber 41. Compressed gas is supplied to the outlet pressure storage chamber 44 below the piston air chamber 41. When it is delivered 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 sealing ring 59, and cannot be conducted to the second exhaust port 43. The gas pressure in the outlet pressure storage chamber 44 is greater than the elastic force of the piston return spring 52, which can make the floating piston seat 50 move upward.

[0077] Please see Figure 9 If 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.

[0078] Please see Figure 10 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.

[0079] Please see Figure 12 In some embodiments, a bottle liner 45 is detachably mounted below the bottle opener 40; a placement cavity 31 is disposed in the bottle liner 45; and the bottle opener 40 is detachably mounted on the fixing base 30.

[0080] Specifically, a bottle liner 45 is detachably installed below the bottle opener 40, and a placement cavity 31 is located inside the bottle liner 45. The gas cylinder 10 can be installed inside the bottle liner 45 and is installed independently of the bottle opener 40. By tightening the bottle liner 45 with threads, the needle-piercing component 60 of the bottle opener 40 can be used to pierce and open the gas cylinder 10. The installation of the gas cylinder 10 is independent of the installation of related components such as the exhaust valve core 61, moving parts, or valve cover above the bottle opener 40 that open the gas passage of the compressed gas cylinder 10. There is no need to consider the high airtightness requirements between the placement cavity 31 and the chamber of the bottle opener 40, which can reduce the use of sealing elements, simplify the assembly process, and reduce production costs. Furthermore, the gas cylinder 10 can be installed and removed by simply removing and installing the bottle liner 45 without disassembling the related components inside the bottle opener 40. The gas cylinder 10 can be replaced and reused multiple times. When the compressed gas cylinder 10 is pierced and opened for the first time, there is also a relatively intuitive operational feedback such as air pressure expansion and a piercing sound when the hand touches the bottle liner 45.

[0081] Furthermore, a sealing block 62 is provided below the bottle opener 40; the sealing block 62 abuts against the needle assembly 60 and the gas cylinder 10. The sealing block 62 is elastic, and can press against the sealing block 62 to seal during the upward movement of the gas cylinder 10. The needle tip of the needle assembly 60 can pass through the sealing block 62.

[0082] 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 sealed container with a linked plug structure, comprising a valve seat assembly and a gas cylinder (10), a movable rod (20), and a switch assembly (90) mounted on the valve seat assembly; characterized in that: The valve seat assembly is installed at the opening of the tank body; the gas cylinder (10) is installed on the valve seat assembly; the movable rod (20) is installed on the valve seat assembly, and pressing down the movable rod (20) can open the gas passage between the gas cylinder (10) and the inner cavity of the tank body; the valve seat assembly is provided with a liquid outlet pipe (80); The switch assembly (90) includes a valve plug (91) and a lever switch (92); the valve plug (91) is rotatably disposed in the outlet pipe (80) for opening or closing the outlet pipe (80); the lever switch (92) includes an extension arm (922) and a rotating connecting part (921) and a pressure cap (925) disposed at both ends of the extension arm (922); the rotating connecting part (921) is connected to the valve plug (91); the pressure cap (925) can rotate with the extension arm (922) to move closer to or away from the top of the movable rod (20); When the pressure cap (925) approaches the top of the movable rod (20), the valve plug (91) rotates and opens the outlet pipe (80); when the pressure cap (925) moves away from the top of the movable rod (20), the valve plug (91) rotates and closes the outlet pipe (80); an elastic sealing gasket (81) is provided inside the outlet pipe (80), and the elastic sealing gasket (81) abuts against the valve plug (91) and the inlet of the outlet pipe (80); 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 (61); 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 (61) 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 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 the first exhaust hole (42) and the second exhaust hole (43).

2. The sealed container with a linked plug structure according to claim 1, characterized in that: The valve plug core (91) is spherical or elliptical in shape and has a central channel inside. The outer contour of the valve plug core (91) can block the liquid outlet pipe (80), and the central channel can open the liquid outlet pipe (80).

3. The sealed container with a linked plug structure according to claim 2, characterized in that: Two extension arms (922) are provided, located on opposite sides of the liquid outlet pipe (80), and the rotating connection part (921) is located below the extension arm (922); a central connecting beam (923) is provided between the two extension arms (922).

4. The sealed container with a linked plug structure according to claim 3, characterized in that: The central connecting beam (923) is provided with a locking buckle (924), which can be fastened to the liquid outlet pipe (80).

5. The sealed container with a linked plug 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 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).

6. The sealed container with a linked plug structure according to claim 5, characterized in that: A cap (70) is installed above the bottle opener (40); the cap (70) can block the piston air chamber (41); the cap (70) can abut against and restrict the upward movement of the movable rod (20) and the floating piston seat (50); when the movable rod (20) moves upward and abuts against the cap (70); the height of the first sealing groove (21) is higher than the highest position of the exhaust communication hole (51).

7. The sealed container with a linked plug 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.

8. The sealed container with a linked plug structure according to claim 7, 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).

9. The sealed container with a linked plug structure according to claim 1, characterized in that: A bottle liner (45) is detachably installed below the bottle opener (40); the placement cavity (31) is disposed in the bottle liner (45); and the bottle opener (40) is detachably installed on the fixing seat (30).

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