Valve body and container

Abstract

A valve body and a container comprising the valve body. The valve body comprises a first valve seat (1) and a valve core (3) which are slidably connected to each other, wherein the first valve seat is provided with a first cavity (14) that receives the valve core, and an inlet (112) and an outlet (241) that are in communication with the first cavity; the valve core has an upper end and a lower end, the lower end being connected to the inlet, and the upper end being connected to the outlet; a first elastic member (5) is provided within the first cavity for maintaining two ends of the valve core to respectively abut against the inlet and the outlet; the valve core comprises a communication cavity (322), an upper port (321) and a lower port (31) which are in communication with each other, the upper port being in communication with the outlet, and the lower port being in communication with the first cavity; and the valve body has a sealed state in which the valve core closes the inlet under the elastic force of the first elastic member such that the first cavity is in communication with the outlet via the lower port, the communication cavity and the upper port, and a conducting state in which the valve core overcomes the elastic force of the first elastic member to open the inlet such that the inlet is in communication with the first cavity. The valve body and the container have good sealing performance and high switching reliability.

Description

A valve body and container Technical Field

[0001] This application relates to the field of valve body technology, and more specifically, to a valve body and container. Background Technology

[0002] In the beer brewing and distribution industry, beer kegs, as key containers for storing and transporting beer, directly affect the freshness, taste, and overall production efficiency of the beer. Among them, the keg's valve, as a crucial component connecting the keg to the external environment, not only controls the flow of beer but also ensures the hygiene, safety, and quality stability of the beer during storage and distribution.

[0003] Existing beer keg valves typically employ simple mechanical seals to control the inflow and outflow of beer. Common designs include check valves, ball valves, and butterfly valves. These valves achieve their sealing function through various methods, such as using spring pressure to keep the sealing ring tightly against the valve seat, or rotating the handle to turn the valve core and thus open or close the passage. While these methods can meet basic functional requirements to some extent, they still have many shortcomings in practical applications. For example, simple mechanical seals are prone to wear and tear after prolonged use, leading to incomplete sealing and affecting the hygiene and safety of the beer, or even causing leakage. Summary of the Invention

[0004] In view of this, this application provides a valve body and container with good sealing performance and high switching reliability.

[0005] In a first aspect, this application provides a valve body, including a first valve seat and a valve core, wherein the valve core is slidably connected to the first valve seat, the first valve seat is provided with a first cavity for accommodating the valve core and an inlet and an outlet communicating with the first cavity, the valve core has an upper end and a lower end, the lower end is connected to the inlet, and the upper end is connected to the outlet, wherein the first cavity is provided with a first elastic element for maintaining the lower end of the valve core in sealed contact with the inlet, and the valve core includes an upper opening, a communicating cavity, and a lower opening that communicate with each other;

[0006] The valve body has a sealed state and a conductive state. In the sealed state, under the elastic force of the first elastic element, the valve core closes the inlet, and the first cavity is connected to the outlet through the lower port, the connecting cavity, and the upper port. In the conductive state, the valve core overcomes the elastic force of the first elastic element and opens the inlet, and the end of the inlet away from the first cavity is connected to the first cavity.

[0007] By adopting the technical solution of this application, the valve core is slidably connected to the first valve seat, and a first elastic element is provided in the first cavity to ensure tight contact between the lower end of the valve core and the inlet, achieving a seal. The first cavity is connected to the outlet through a lower opening, a connecting cavity, and an upper opening, ensuring the seal between the upper end of the valve core and the outlet, and limiting the communication path between the first cavity and the outlet. The double sealing structure improves the sealing performance of the valve, prevents beer leakage, and ensures the hygiene, safety, and quality stability of the beer. Compared with the traditional mechanical seal structure, the sliding connection between the valve core and the first valve seat reduces component wear caused by mechanical friction and extends the service life of the valve. In the sealed state, the elastic force of the first elastic element makes the lower end of the valve core tightly abut against the inlet, effectively sealing the inlet and preventing fluid leakage from the inlet. This design ensures the sealing performance of the valve when closed, meeting the sealing requirements of various fluid control systems. When the valve is in the open state, the valve core overcomes the elastic force of the first elastic element to open the inlet, allowing the end of the inlet away from the first cavity to communicate with the first cavity. In this way, the fluid can enter the first cavity through the inlet and flow out through the lower opening, the connecting cavity, the upper opening and the outlet, thus achieving smooth fluid flow.

[0008] In some embodiments, the lower port is located on and penetrates the side wall of the valve core, and the connecting cavity is located in the middle of the valve core and connects the upper port and the lower port.

[0009] By adopting the technical solution of this application, the design of the lower opening located on the side wall of the valve core allows the fluid to be redirected more smoothly when entering the valve core and into the connecting cavity. This design reduces turbulence and eddies within the valve, lowers fluid resistance, and improves the accuracy and stability of flow control. The lower opening penetrates the side wall of the valve core, and the connecting cavity is located in the middle of the valve core; this layout allows the valve core to better conform to the valve seat assembly when closed. This design of the lower opening and the connecting cavity reduces the direct impact of the fluid on the valve core, lowering the wear rate of the valve core.

[0010] In some implementations, a first seal is connected between the lower end and the inlet, and a second seal is connected between the upper end and the outlet. In the sealed state, under the elastic force of the first elastic element, the valve core closes the inlet through the first seal.

[0011] By adopting the above technical solution, the first sealing element, in conjunction with the elastic force of the first elastic element, significantly improves the sealing performance of the valve in the closed state. This design effectively prevents fluid leakage from the inlet, ensuring the hygiene, safety, and quality stability of beer or other fluids. The sealing elements are typically easy to disassemble and replace; worn sealing elements can be easily removed and replaced during valve cleaning and maintenance, facilitating repair and replacement, helping to maintain valve cleanliness and performance, and reducing malfunctions and maintenance costs caused by seal aging or wear.

[0012] In some embodiments, a second valve seat is also included, the second valve seat including a second cavity, the first valve seat being disposed in the second cavity and slidably connected to the second valve seat, and a second elastic member being connected between the first valve seat and the second valve seat.

[0013] By adopting the above technical solution, the introduction of the second elastic element provides additional elastic force to the first valve seat, ensuring that it can tightly fit the second valve seat in the closed state, effectively preventing fluid leakage and significantly enhancing the valve's sealing performance, especially under high pressure or high temperature environments. The valve core slides relative to the first valve seat, and the first valve seat slides relative to the second valve seat. This double-sliding double-sealing structure allows for synchronous or asynchronous operation of the two-stage sealing, making operation more flexible and applications more widespread.

[0014] In some implementations, the elastic coefficient of the first elastic element is smaller than that of the second elastic element.

[0015] During valve opening and closing, the difference in elastic coefficients between the first and second elastic elements affects the valve's dynamic performance. A smaller first elastic coefficient allows the valve core to more easily overcome sealing forces during opening, while a larger second elastic coefficient ensures better stability and controllability of the valve seat assembly during movement. The design of the first elastic element's elastic coefficient to be smaller than that of the second elastic element is based on a comprehensive consideration of valve functional requirements, stress distribution, and dynamic performance. This design aims to improve the valve's sealing performance, durability, and fluid control performance, thereby meeting the needs of various industrial sectors and fluid control systems.

[0016] In some embodiments, the second valve seat includes a first port and a second port communicating with the second cavity. The inlet end of the first valve seat passes through the first port and is clearance-fitted with the first port. A third sealing element is provided between the outlet end of the first valve seat and the second port. Under the elastic force of the second elastic element, the first valve seat seals against the second port through the third sealing element. The third sealing element and the second sealing element are integral structures.

[0017] By adopting the above technical solution, the inlet end of the first valve seat passes through the first port of the second valve seat, and a certain gap is maintained between them. This gap allows the first valve seat to slide smoothly within the second valve seat, while reducing friction and wear, and facilitating gas flow. A third sealing element is provided between the outlet end of the first valve seat and the second port of the second valve seat. When the second elastic element applies elastic force, the first valve seat is pushed towards the second port, causing the third sealing element to tightly abut against the second port, thereby achieving a seal. The third sealing element and the second sealing element are integrated into a single structure, simplifying the structure, reducing costs and assembly complexity, and improving sealing linkage performance.

[0018] In some implementations, a connecting plate is connected to the inlet side of the first valve seat, the lower end of the valve core is slidably connected to the connecting plate, the connecting plate is provided with a through hole, and the connecting plate and the first valve seat enclose a third cavity.

[0019] By adopting the above technical solution, the sliding connection design allows the connecting plate to guide the valve core during opening and closing, resulting in smoother switching and more stable sealing. This helps improve the valve's response speed and operational accuracy, especially in applications requiring rapid fluid flow control. The through-holes in the connecting plate facilitate liquid flow when the valve core is open, allowing the connecting plate to guide the valve core's sliding without obstructing liquid flow. The third cavity formed by the connecting plate and the first valve seat allows for smoother beer flow and reduces foam formation.

[0020] In some embodiments, the first seal is located within the third cavity. In the sealed state, the third cavity is not in communication with the first cavity, and in the open state, the third cavity is in communication with the first cavity.

[0021] Secondly, this application provides a container that employs the valve body described in the first aspect.

[0022] In some implementations, the inlet end of the first valve seat is detachably connected to a first bag body, the first outlet end of the second valve seat is connected to a second bag body, the second bag body has a first receiving cavity, the first bag body is located in the first receiving cavity, and the second outlet end of the valve seat is detachably connected to a barrel body, the barrel body has a second receiving cavity, and the second bag body is located in the second receiving cavity.

[0023] By adopting the above technical solution, the first bag is used to hold beer-like liquids, the second bag is used to inject gas to squeeze the first bag, causing the liquid inside the first bag to flow out, and the container body facilitates the protection and transportation of the first and second bags.

[0024] In summary, this application has at least one of the following beneficial technical effects:

[0025] 1. It effectively solves problems such as poor sealing, easy wear and tear, and low reliability of beer keg valves, which not only improves the freshness and taste of beer, but also significantly enhances production efficiency and economic benefits, bringing important technological progress to the beer brewing and distribution industry.

[0026] 2. This valve design is not only suitable for beer kegs, but can also be widely used in other liquid storage and distribution containers requiring efficient and reliable sealing control, such as those in the beverage, juice, and dairy industries, demonstrating broad applicability and market potential. Attached Figure Description

[0027] Figure 1 is a perspective view of the valve body of this application;

[0028] Figure 2 is a perspective view of the valve body of this application from another angle;

[0029] Figure 3 is a cross-sectional view of the valve body of this application;

[0030] Figure 4 is a cross-sectional view of the valve body of this application from another angle;

[0031] Figure 5 is an exploded view of the valve body of this application;

[0032] Figure 6 is an exploded sectional view of the valve body of this application;

[0033] Figure 7 is a perspective view of the valve body and the inner connecting seat of this application after connection;

[0034] Figure 8 is a cross-sectional view of the valve body and the inner connecting seat of this application after connection;

[0035] Figure 9 is a schematic diagram of liquid flow in the open state of the valve body of this application;

[0036] Figure 10 is a schematic diagram of the valve body and liquid sampling probe of this application;

[0037] Figure 11 is a cross-sectional view of a beer barrel.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. First valve seat; 11. Seat body; 111. First internal thread; 112. Inlet; 113. Third cavity; 12. Small O-ring; 13. Connecting plate; 131. Through hole; 132. Guide hole; 14. First cavity; 2. Second valve seat; 21. Upper seat; 211. Second port; 212. Second internal thread; 22. Base; 221. First port; 23. Second cavity; 24. Connecting bracket; 241. Outlet; 25. 2. Sealing element; 3. Valve core; 31. Lower opening; 32. Upper valve; 321. Upper opening; 322. Connecting cavity; 33. Lower valve; 34. First sealing element; 4. Second elastic element; 5. First elastic element; 6. Outer connecting seat; 61. Large O-ring; 7. Inner connecting seat; 8. Liquid sampling probe; 81. Liquid sampling hole; 100. First bag body; 200. Second bag body; 201. First receiving cavity; 300. Barrel body; 301. Second receiving cavity. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. The components described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0044] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the features in the following embodiments can be combined with each other.

[0045] Example 1

[0046] Please refer to Figures 1-6. The valve body provided in this embodiment includes a first valve seat 1 and a valve core 3 that are slidably connected. The first valve seat 1 has a first cavity 14 for accommodating the valve core 3 and an inlet 112 and an outlet 241 communicating with the first cavity 14. The valve core 3 has an upper end and a lower end, with the lower end connected to the inlet 112 and the upper end connected to the outlet 241. The first cavity 14 is provided with a first elastic member 5 that maintains a sealing connection between the lower end of the valve core 3 and the inlet 112. The two ends of the first elastic member 5 abut against the first valve seat 1 and the valve core 3, respectively. The end of the valve core 3 away from the outlet 241 passes through the inlet 112 of the first valve seat 1 to seal the inlet 112, thereby enhancing the sealing performance and extending the service life.

[0047] The shape of the first cavity 14 can be designed as a cylinder or other geometric shape as needed to adapt to different application scenarios.

[0048] The first elastic element 5 can be a coil spring or a rubber gasket. A coil spring can provide stable elastic force, while a rubber gasket is more suitable for high-frequency opening and closing operations because it has a better cushioning effect. To ensure a sealing effect, additional support structures can be provided on both sides of the first elastic element 5 to prevent deformation of the elastic element after long-term use.

[0049] Please refer to Figures 3-6. The valve core 3 includes an interconnected connecting cavity 322, an upper opening 321, and a lower opening 31. The upper opening 321 is connected to the outlet 241, and the lower opening 31 is connected to the first cavity 14. This design allows liquid to enter the connecting cavity 322 from the lower opening 31 and then flow out from the upper opening 321 to the outlet 241, thus achieving a smooth transition of the flow path. The connecting cavity 322 can be designed as a gradually tapered structure to better guide the liquid flow and reduce the occurrence of vortices.

[0050] The lower opening 31 is located on and penetrates the side wall of the valve core 3, and the connecting cavity 322 is located in the middle of the valve core 3. This design helps to reduce the resistance of the liquid during flow and improve the flow efficiency. In addition, the lower opening 31 can also be set in the form of multiple small holes to increase the uniformity of liquid distribution and avoid damage caused by excessive local pressure. Referring to Figure 6, in this embodiment, the valve core 3 includes an upper valve 32, a lower valve 33, and a first sealing element 34. The first sealing element 34 is assembled on the lower valve 33, and the lower valve 33 and the upper valve 32 are fixedly connected as one unit.

[0051] Please refer to Figures 3 and 4. A first seal 34 is connected between the lower end and the inlet 112, and a second seal 25 is connected between the upper end and the outlet 241. Under the elastic force of the first elastic element 5, the first seal 34 closes the inlet 112. Here, the first seal 34 and the second seal 25 can be either O-rings or lip seals, both of which have excellent sealing performance and long service life. To prevent the seals from being extruded under high pressure, an anti-extrusion ring can be added to their exterior.

[0052] A connecting plate 13 is connected to one side of the valve seat inlet 112, and the lower end of the valve core 3 is slidably connected to the center hole of the connecting plate 13. The connecting plate 13 is also provided with a through hole 131 to facilitate the passage of liquid when the valve is opened. The connecting plate 13 can be made of high-strength plastic or metal materials to ensure its strength and stability.

[0053] The valve body also includes a second valve seat 2, which includes a second cavity 23. A first valve seat 1 is disposed within the second cavity 23 and slidably connected to the second valve seat 2. A second elastic element 4 connects the first valve seat 1 and the second valve seat 2. The function of the second elastic element 4 is to provide additional preload when the valve is closed, further enhancing the sealing effect. The second elastic element 4 can also be a coil spring or a rubber gasket, depending on the requirements of the actual application environment.

[0054] Specifically, the elastic coefficient of the first elastic element 5 is smaller than that of the second elastic element 4. This design prioritizes releasing the pressure of the first elastic element 5 when the valve is opened, ensuring the valve core 3 can open smoothly. When the valve is closed, the greater elasticity of the second elastic element 4 is used to press the sealing surface tightly, achieving a better sealing effect. In this embodiment, both the first elastic element 5 and the second elastic element 4 are injection-molded into a mesh-like structure using plastic material that meets food hygiene standards, providing both good elasticity and compliance with food safety requirements.

[0055] The second valve seat 2 includes a first port 221 and a second port 211 communicating with the second cavity 23. The inlet 112 end of the first valve seat 1 passes through the first port 221 and is clearance-fitted with it. A third seal is provided between the outlet 241 end of the first valve seat 1 and the second port 211. Under the elastic force of the second elastic member 4, the first valve seat 1 seals against the second port 211 through the third seal. The third seal and the second seal 25 are an integral structure, which not only simplifies the assembly process but also improves the overall reliability. The second seal 25 is assembled with the connecting frame 24. Under the elastic force of the first elastic member 5 and the second elastic member 4, the upper surface of the second seal 25 seals against the first valve seat 1, and the lower surface of the second seal 25 seals against the valve core 3. The connecting frame 24 can be made of metal or plastic, and the second seal 25 is made of silicone. The connecting frame 24 and the second seal 25 can be connected as a single unit by assembly or injection molding.

[0056] Please refer to Figures 3 and 4. The second valve seat 2 includes a threaded upper seat 21 and a base 22. The second elastic element 4 is fitted around the outer periphery of the first valve seat 1, with both ends abutting against the base 22 and the first valve seat 1 respectively, so that the first valve seat 1 abuts against the connecting frame 24 and maintains the second sealing element 25 abutting against the upper seat 21 for sealing. The outer connecting seat 6 is threadedly connected to the base 22, and a large O-ring 61 is used to seal between the outer connecting seat 6 and the base 22. In this embodiment, the seat body 11, the connecting frame 24, and the second sealing element 25 can be used as a whole to form the first valve seat 1, realizing the corresponding function of the first valve seat 1.

[0057] Please refer to Figures 7 and 8. When the valve body is connected to the liquid bag, the liquid bag and the inner connecting seat 7 are sealed together as one unit. The inner connecting seat 7 is threadedly connected to the inlet 112 of the first valve seat 1, thereby allowing the inner cavity of the liquid bag to connect to the inlet 112 through the center hole of the inner connecting seat 7. When the valve core 3 is opened, the liquid in the liquid bag can enter the first cavity 14 through the inlet 112. A small O-ring 12 is provided between the inner connecting seat 7 and the first valve seat 1 to improve the sealing of the connection between the two.

[0058] The second valve seat 2 is threadedly connected to the external connecting seat 6, which is integrally connected to the air bag. The liquid bag is located inside the air bag, and the internal spaces of the two bags are isolated from each other.

[0059] Please refer to Figures 9 and 10. During liquid collection, the liquid collection probe 8 is inserted into the second port 211 of the second valve seat 2 and abuts against the valve core 3, thereby pushing the valve core 3 to slide away from the second port 211. When the valve core 3 is subjected to pressure and slides away from the outlet 241, the inlet 112 of the first valve seat 1 opens. The liquid in the liquid bag connected to the inner connecting seat 7 passes through the connecting plate 13 and enters the first cavity 14 from the inlet 112. Then, it passes through the lower port 31 of the first cavity 14 and enters the connecting cavity 322 and flows out from the upper port 321. Another path goes directly from the lower port 31 into the connecting cavity 322 and flows out from the upper port 321 (see solid arrow). The liquid flows out from the upper port 321 and enters the liquid collection hole 81 for liquid collection.

[0060] Example 2

[0061] Please refer to Figure 11. This embodiment discloses a container, specifically a beer keg, which employs the valve body described in the above embodiment. The second valve seat 2 is threadedly connected to the keg body 300. The keg body 300 has a second receiving cavity 301. The outer connecting seat 6 is integrally and sealingly connected to the second bag body 200 (air bag), and the outer connecting seat 6 is threadedly connected to the second valve seat 2. The second bag body 200 is located within the second receiving cavity 301 of the keg body 300. The inner connecting seat 7 is integrally and sealingly connected to the first bag body 100 (liquid bag), and the first bag body 100 is located within the first receiving cavity 201 of the second bag body 200. The inner connecting seat 7 is threadedly connected to the first valve seat 1.

[0062] When it is necessary to remove the beer from the first bag 100, the liquid dispensing probe 8 presses down on the valve core 3 and the first valve seat 1. The valve core 3 and the first valve seat 1 slide, and air enters the second cavity 23 from the second port 211 (see the dashed arrow) and enters the second bag 200 from the first port 221. The gas entering the second bag 200 compresses the first bag 100, and the beer in the first bag 100 flows out through the lower port 31 and the connecting cavity 322 through the liquid dispensing hole 81 (see the solid arrow).

[0063] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes, modifications, substitutions, and variations can be made to the present invention without departing from its spirit and scope, and all such changes, modifications, substitutions, and variations fall within the scope of the present invention as claimed.

Claims

1. A valve body, characterized by, The valve core (3) is in sliding connection with the first valve seat (1), the first valve seat (1) is provided with a first cavity (14) accommodating the valve core (3) and an inlet (112) and an outlet (241) in communication with the first cavity (14), the valve core (3) has an upper end and a lower end, the lower end is connected with the inlet (112), and the upper end is connected with the outlet (241), and the first cavity (14) is provided with a first elastic element (5) for sealingly abutting the lower end of the valve core (3) with the inlet (112). The valve body is provided with a sealing state and a conducting state, in the sealing state, under the elastic force of the first elastic element (5), the valve core (3) closes the inlet (112), and the first cavity (14) is in communication with the outlet (241) through the lower port (31), the communication cavity (322) and the upper port (321); in the conducting state, the valve core (3) opens the inlet (112) against the elastic force of the first elastic element (5), and the end of the inlet (112) away from the first cavity (14) is in communication with the first cavity (14).

2. Valve body according to claim 1, characterized in that The lower port (31) is arranged on the side wall of the valve core (3) and penetrates through the side wall, and the communication cavity (322) is arranged in the middle of the valve core (3) and connects the upper port (321) and the lower port (31).

3. The valve body of claim 1, wherein The first sealing element (34) is connected between the lower end and the inlet (112), and the second sealing element (25) is connected between the upper end and the outlet (241), in the sealing state, under the elastic force of the first elastic element (5), the valve (3) closes the inlet (112) through the first sealing element (34).

4. Valve body according to claim 3, characterized in that The second valve seat (2) includes a second cavity (23), the first valve seat (1) is arranged in the second cavity (23) and in sliding connection with the second valve seat (2), and the first valve seat (1) and the second valve seat (2) are connected with a second elastic element (4).

5. The valve body of claim 4, wherein, The elastic coefficient of the first elastic element (5) is smaller than the elastic coefficient of the second elastic element (4).

6. The valve body of claim 4, wherein The second valve seat (2) includes a first port (221) and a second port (211) in communication with the second cavity (23), the inlet end of the first valve seat (1) penetrates through the first port (221) and is in gap fit with the first port (221), the third sealing element is arranged between the outlet end of the first valve seat (1) and the second port (211), under the elastic force of the second elastic element (4), the first valve seat (1) is in sealing abutment with the second port (211) through the third sealing element, and the third sealing element and the second sealing element (25) are in an integral structure.

7. The valve body of claim 3, wherein The first valve seat (1) is connected with a connecting plate (13) on the side of the inlet (112), the lower end of the valve core (3) is in sliding connection with the connecting plate (13), the connecting plate (13) is provided with a through hole (131), and the connecting plate (13) and the first valve seat (1) form a third cavity (113).

8. The valve body of claim 7, wherein, The first sealing element (34) is located in the third cavity (113), the third cavity (113) is not communicated with the first cavity (14) in the sealing state, and the third cavity (113) is communicated with the first cavity (14) in the conduction state.

9. A container characterised in that The valve body of any one of claims 1-8.

10. A container characterised in that The container according to claim 6, characterized in that a first bag body (100) is detachably connected to the inlet (112) end of the first valve seat (1), a second bag body (200) is connected to the first port (221) end of the second valve seat (2), the second bag body (200) is provided with a first containing cavity (201), the first bag body (100) is located in the first containing cavity (201), the second port (211) of the valve seat is detachably connected with a barrel body (300), the barrel body (300) is provided with a second containing cavity (301), and the second bag body (200) is located in the second containing cavity (301).

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