Valve body and container

Abstract

The valve body comprises a first valve seat and a valve element, the valve element is in sliding connection with the first valve seat, the first valve seat is provided with a first cavity for containing the valve element, an inlet and an outlet, the inlet and the outlet are communicated with the first cavity, the two ends of the valve element are the upper end and the lower end respectively, the lower end is connected with the inlet, and the valve element is arranged in the first cavity. The upper end of the valve element is connected with the inlet, the upper end of the valve element is connected with the outlet, a first elastic piece for keeping the two ends of the valve element to abut against the inlet and the outlet is arranged in the first cavity, the valve element comprises a communicating cavity, an upper opening and a lower opening which communicate with one another, the upper opening communicates with the outlet, and the lower opening communicates with the first cavity; wherein 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 piece, the valve element seals the inlet, and the first cavity communicates with the outlet through the lower opening, the communicating cavity and the upper opening; and in the conducting state, the valve element overcomes the elastic force of the first elastic piece to open the inlet, and the inlet is communicated with the first cavity. The valve body and the container are good in sealing performance and high in opening and closing reliability.

Description

Technical Field

[0001] The present application relates to the field of valve body technology, and in particular to a valve body and a container. Background Art

[0002] In the beer brewing and distribution industry, beer kegs are key containers for storing and transporting beer. Their design and performance directly affect the freshness, taste and overall production efficiency of beer. Among them, the switch valve of the beer keg, as an important component connecting the beer keg with the external environment, not only bears the task of controlling the outflow of beer, but also needs to ensure the hygiene, safety and stable quality of beer during storage and distribution.

[0003] Existing beer keg valves usually use a simple mechanical sealing structure to control the inflow and outflow of beer. Common design solutions include one-way valves, ball valves, butterfly valves, etc. These valves achieve sealing functions in various ways, such as using the pressure of a spring to make the sealing ring close to the valve seat, or rotating the valve core by rotating the handle to open or close the channel. Although these methods can meet basic functional requirements to a certain extent, there are still many shortcomings in practical applications.

[0004] The beer keg valve adopts a simple mechanical sealing structure, which is prone to loose sealing due to wear after long-term use, thus affecting the hygiene and safety of beer and even causing leakage. Summary of the invention

[0005] In view of this, the present application provides a valve body and a container with good sealing performance and high switching reliability.

[0006] In a first aspect, the present application provides a valve body, comprising a first valve seat and a valve core, 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 communicated with the first cavity, the two ends of the valve core are an upper end and a lower end respectively, the lower end is connected with the inlet, and the upper end is connected with the outlet, a first elastic member is provided in the first cavity to keep the lower end of the valve core in sealing contact with the inlet, and the valve core comprises an upper port, a communicating cavity and a lower port communicated with each other; Wherein, 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 member, the valve core closes the inlet, and the first cavity is connected with the outlet through the lower port, the connecting cavity and the upper port; in the conducting state, the valve core overcomes the elastic force of the first elastic member to open the inlet, and the end of the inlet away from the first cavity is connected with the first cavity.

[0007] 1. By adopting the technical solution of the present application, the valve core is slidably connected to the first valve seat, and the first elastic member is arranged in the first cavity, which ensures the close contact between the lower end of the valve core and the inlet to achieve sealing. The first cavity is connected to the outlet through the lower port, the connecting cavity, and the upper port, which ensures the sealing of the upper end of the valve core and the outlet, and defines 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 hygienic safety and stable quality of beer. Compared with the traditional mechanical sealing structure, the sliding connection between the valve core and the first valve seat reduces the component loss caused by mechanical friction and prolongs the service life of the valve. In the sealed state, the elastic force of the first elastic member makes the lower end of the valve core tightly abut against the inlet, effectively closing the inlet and preventing the fluid from leaking from the inlet. This design ensures the sealing performance of the valve when it is closed and meets the sealing requirements of various fluid control systems. When the valve is in the conducting state, the valve core overcomes the elastic force of the first elastic member to open the inlet, so that the end of the inlet away from the first cavity is connected to the first cavity. In this way, the fluid can enter the first cavity through the inlet and flow out through the lower port, the connecting cavity, the upper port and the outlet, thereby achieving smooth flow of the fluid.

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

[0009] By adopting the technical solution of the present application, the design of the lower port located on the side wall of the valve core allows the fluid to turn more smoothly when entering the valve core and enter the connecting cavity. This design reduces the turbulence and eddy current of the fluid inside the valve, reduces the fluid resistance, and improves the accuracy and stability of flow control. The lower port runs through 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 fit the valve seat assembly when closed. This design of the lower port and the connecting cavity reduces the direct impact of the fluid on the valve core and reduces the wear rate of the valve core.

[0010] In some embodiments, 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 member, the valve core closes the inlet through the first seal.

[0011] By adopting the above technical solution, the first seal cooperates with the elastic force of the first elastic member to significantly improve the sealing performance of the valve in the closed state. This design effectively prevents fluid leakage from the inlet, ensuring the hygienic safety and stable quality of beer or other fluids. Seals are usually easy to disassemble and replace. When cleaning and maintaining the valve, worn seals can be easily removed and replaced, which is convenient for maintenance and replacement, helping to maintain the cleanliness and performance of the valve and reduce failures and maintenance costs caused by aging or wear of seals.

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

[0013] By adopting the above technical solution, the introduction of the second elastic member provides additional elastic force for the first valve seat, ensuring that it can fit closely with the second valve seat in the closed state, effectively preventing fluid leakage, and significantly enhancing the sealing performance of the valve, especially in 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 can realize synchronous or asynchronous operation of the two-stage sealing, which is more flexible in operation and more widely used.

[0014] In some embodiments, the elastic modulus of the first elastic member is smaller than the elastic modulus of the second elastic member.

[0015] By adopting the above technical solution, during the opening and closing process of the valve, the difference in elastic coefficients between the first elastic member and the second elastic member will affect the dynamic performance of the valve. The smaller first elastic coefficient allows the valve core to move more easily to overcome the sealing force when opening, while the larger second elastic coefficient ensures that the valve seat assembly maintains good stability and controllability during movement. The elastic coefficient of the first elastic member is designed to be smaller than the elastic coefficient of the second elastic member based on a comprehensive consideration of the valve function requirements, stress distribution and dynamic performance. This design aims to improve the sealing performance, durability and fluid function control performance of the valve, thereby meeting the needs of various industrial fields and fluid control systems.

[0016] In some embodiments, the second valve seat includes a first port and a second port connected to the second cavity, the inlet end of the first valve seat passes through the first port and is gapped with the first port, a third seal is provided between the outlet end of the first valve seat and the second port, and under the elastic force of the second elastic member, the first valve seat assembly is sealed and abutted against the second port through the third seal, and the third seal and the second seal are an integral structure.

[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 clearance fit allows the first valve seat to slide smoothly in the second valve seat, while reducing friction and wear, and facilitating the flow of gas. A third seal is provided between the outlet end of the first valve seat and the second port of the second valve seat. When the second elastic member applies elastic force, the first valve seat is pushed toward the second port, so that the third seal is tightly abutted against the second port, thereby achieving sealing. The third seal is an integrated structure with the second seal, which simplifies the structure, reduces costs and assembly complexity, and has better sealing linkage performance.

[0018] In some embodiments, 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 design of the sliding connection enables the connecting plate to guide the valve core during the opening and closing process, making the switch smoother and the seal more stable. It helps to improve the response speed and operation accuracy of the valve, especially in situations where rapid control of fluid flow is required. The through hole of the connecting plate can facilitate the flow of liquid when the valve core is opened. The connecting plate can guide the sliding of the valve core without hindering the flow of liquid. The third cavity formed by the connecting plate and the first valve seat can make the beer flow out more smoothly and reduce the generation of foam.

[0020] In some embodiments, the first sealing member is located in the third cavity. In the sealed state, the third cavity is not connected to the first cavity. In the conductive state, the third cavity is connected to the first cavity.

[0021] In a second aspect, the present application provides a container, which adopts the valve body described in the first aspect.

[0022] In some embodiments, the inlet end of the first valve seat is detachably connected to a first bag body, the first port end of the second valve seat is connected to a second bag body, the second bag body is provided with a first accommodating cavity, the first bag body is located in the first accommodating cavity, the second port end of the valve seat is detachably connected to a barrel body, the barrel body is provided with a second accommodating cavity, and the second bag body is located in the second accommodating cavity.

[0023] By adopting the above technical solution, the first bag body is used to hold beer-like liquid, the second bag body is used to inject gas to squeeze the first bag body so that the liquid in the first bag body flows out, and the barrel body is convenient for protecting and transporting the first bag body and the second bag body.

[0024] In summary, the present application has at least one of the following beneficial technical effects: 1. It effectively solves the problems of poor sealing, easy wear and low switch reliability of beer barrel 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.

[0025] 2. This valve body design is not only suitable for beer kegs, but can also be widely used in other liquid storage and distribution containers that require efficient and reliable sealing control, such as beverages, juices, dairy products and other industries, showing wide applicability and market potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the valve body of the present application when viewed from above; Figure 2 It is a schematic diagram of the three-dimensional structure of the valve body of the present application when viewed from above; Figure 3 It is a structural schematic diagram of a three-dimensional cross-section of the valve body of the present application; Figure 4 It is a cross-sectional schematic diagram of the valve body of the present application from another angle; Figure 5 It is a schematic diagram of the exploded structure of the valve body of this application; Figure 6 It is a schematic cross-sectional diagram of the exploded structure of the valve body of the present application; Figure 7 This is a schematic diagram of the connection structure between the valve body and the inner connection seat of the present application; Figure 8 It is a schematic cross-sectional structure diagram of the connection between the valve body and the inner connecting seat of the present application; Fig. 9 It is a schematic diagram of liquid flow when the valve body of the present application is in an open state; Fig.10 This is a schematic diagram of the matching structure of the valve body and the liquid extraction probe of the present application; Fig.11 It is a schematic diagram of the cross-section structure of a beer barrel.

[0027] 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 frame; 241. Outlet; 25. First Second sealing member; 3, valve core; 31, lower opening; 32, upper valve; 321, upper opening; 322, connecting cavity; 33, lower valve; 34, first sealing member; 4, second elastic member; 5, first elastic member; 6, external connecting seat; 61, large O-ring; 7, internal connecting seat; 8, liquid collection probe; 81, liquid collection hole; 100, first bag body; 200, second bag body; 201, first accommodating cavity; 300, barrel body; 301, second accommodating cavity. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme 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 of the embodiments of the present invention described and shown in the accompanying drawings can be arranged and designed in various configurations. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0032] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0033] Example 1 Example

[0034] See also Figure 1-Figure 6 A valve body provided in an embodiment of the present application comprises a first valve seat 1 and a valve core 3, and the valve core 3 is slidably connected to the first valve seat 1. The first valve seat 1 is provided with a first cavity 14 for accommodating the valve core 3, and an inlet 112 and an outlet 241 communicated with the first cavity 14. The two ends of the valve core 3 are an upper end and a lower end, respectively, the lower end is connected to the inlet 112, and the upper end is connected to the outlet 241. A first elastic member 5 is provided in the first cavity 14 to keep the lower end of the valve core 3 sealed with the inlet 112, and the two ends of the first elastic member 5 are respectively abutted against the first valve seat 1 and the valve core 3, and 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 achieving the effect of enhancing the sealing performance and extending the service life.

[0035] The shape of the first cavity 14 can be designed to be cylindrical or other geometric shapes as needed to adapt to different application scenarios.

[0036] The first elastic member 5 can be a coil spring or a rubber gasket. The advantage of the coil spring is that it can provide a stable elastic force, while the rubber gasket is more suitable for high-frequency opening and closing operations because it has a better buffering effect. In order to ensure the sealing effect, additional support structures can be provided on both sides of the first elastic member 5 to prevent the elastic member from deforming after long-term use.

[0037] See also Figure 3-Figure 6 The valve core 3 includes a connecting cavity 322, an upper port 321, and a lower port 31 that are interconnected. The upper port 321 is connected to the outlet 241, and the lower port 31 is connected to the first cavity 14. This design allows the liquid to enter the connecting cavity 322 from the lower port 31, and then flow out from the upper port 321 to the outlet 241, thereby achieving a smooth transition of the flow channel. The connecting cavity 322 can be designed as a gradual tapered structure to better guide the flow of the liquid and reduce the occurrence of vortex phenomena.

[0038] The lower port 31 is arranged on the side wall of the valve core 3 and penetrates the side wall, and the communication cavity 322 is arranged in the middle of the valve core 3. Such a design helps to reduce the resistance of the liquid during the flow process and improve the flow efficiency. In addition, the lower port 31 can also be arranged in the form of multiple small holes to increase the uniformity of liquid distribution and avoid damage caused by excessive local pressure. Figure 6 In this embodiment, the valve core 3 includes an upper valve 32, a lower valve 33 and a first sealing member 34. The first sealing member 34 is assembled on the lower valve 33. The lower valve 33 and the upper valve 32 are fixedly connected as a whole.

[0039] See also Figure 3 and Figure 4A 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 member 5, the first seal 34 seals the inlet 112. Here, the first seal 34 and the second seal 25 can be selected from O-rings or lip seals, both of which have excellent sealing performance and a long service life. In order to prevent the seal from being extruded under high pressure, an anti-extrusion ring can be added to its outside.

[0040] The inlet 112 of the valve seat is connected to a connecting plate 13, and the lower end of the valve core 3 is slidably connected to the central hole of the connecting plate 13. The connecting plate 13 is also provided with a through hole 131, which facilitates the passage of liquid when the valve is opened. The connecting plate 13 can be made of high-strength plastic or metal material to ensure its strength and stability.

[0041] In addition, the valve body also includes a second valve seat 2, the second valve seat 2 includes a second cavity 23, and the first valve seat 1 is disposed in the second cavity 23 and is slidably connected to the second valve seat 2. A second elastic member 4 is connected between the first valve seat 1 and the second valve seat 2. The function of the second elastic member 4 is to provide additional pre-tightening force when closing the valve to further enhance the sealing effect. The second elastic member 4 can also be selected from a coil spring or a rubber gasket, and the specific selection depends on the requirements of the actual application environment.

[0042] In particular, the elastic coefficient of the first elastic member 5 is smaller than the elastic coefficient of the second elastic member 4. This design is to release the pressure of the first elastic member 5 first when the valve is opened to ensure that the valve core 3 can be opened smoothly, and to rely on the greater elastic force of the second elastic member 4 to press the cover tightly when the valve is closed to achieve a better sealing effect. The first elastic member 5 and the second elastic member 4 in this embodiment are both plastic materials that meet food hygiene standards and are injection molded into a net barrel structure, which has good elasticity and meets food safety requirements.

[0043] The second valve seat 2 includes a first port 221 and a second port 211 connected to the second cavity 23. The inlet 112 end of the first valve seat 1 passes through the first port 221 and is in clearance with the first port 221. A third sealing member 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 is sealed and abutted with the second port 211 through the third sealing member. The third sealing member and the second sealing member 25 are an integral structure. Such a design can not only simplify the assembly process, but also improve the overall reliability. The second sealing member 25 is assembled as a whole 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 sealing member 25 is sealed and abutted with the first valve seat 1, and the lower surface of the second sealing member 25 is sealed and abutted with the valve core 3. The connecting frame 24 can be a metal or plastic part, and the second sealing member 25 is made of silicone. The connecting frame 24 and the second sealing member 25 can be connected as a whole by assembly or injection molding.

[0044] See also Figure 3 and Figure 4 The second valve seat 2 includes an upper seat 21 and a base 22, which are connected by threads. The second elastic member 4 is sleeved on the outer periphery of the first valve seat 1 and the two ends are respectively in contact with the base 22 and the first valve seat 1, so as to achieve the contact between the first valve seat 1 and the connecting frame 24, and keep the second sealing member 25 in contact and seal with the upper seat 21. The outer connecting seat 6 is threadedly connected to the base 22, and the outer connecting seat 6 and the base 22 are sealed by a large O-ring 61. In this embodiment, the seat body 11, the connecting frame 24 and the second sealing member 25 can be regarded as a whole to form the first valve seat 1, so as to achieve the corresponding functions of the first valve seat 1.

[0045] See also Figure 7 and Figure 8 When the valve body is connected to the liquid bag, the liquid bag is sealed and connected to the inner connection seat 7 as a whole, and the inner connection seat 7 is threadedly connected to the inlet 112 end of the first valve seat 1, thereby realizing that the inner cavity of the liquid bag is connected to the inlet 112 through the center hole of the inner connection 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 arranged between the inner connection seat 7 and the first valve seat 1 to improve the sealing performance of the connection between the two.

[0046] The second valve seat 2 is threadedly connected to the external connection seat 6, and the external connection seat 6 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.

[0047] See also Fig. 9 and Fig.10 During the liquid taking operation, the liquid taking probe 8 will be inserted from the second port 211 of the second valve seat 2 and abut against the valve core 3 to push the valve core 3 to slide in the direction away from the second port 211. When the valve core 3 is subjected to pressure and slides in the direction away from the outlet 241, the inlet 112 of the first valve seat 1 is opened, and 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, and then passes through the lower port 31 from the first cavity 14 into the connecting cavity 322 and flows out from the upper port 321. The other way directly enters the connecting cavity 322 from the lower port 31 and flows out from the upper port 321 (see the solid arrow), and the liquid flows out from the upper port 321 into the liquid taking hole 81 to take the liquid.

[0048] Example 2 See also Fig.11, this embodiment discloses a container, specifically a beer barrel, which adopts the valve body in the above embodiment. The second valve seat 2 is threadedly connected to the barrel body 300, and the barrel body 300 has a second accommodating cavity 301. The outer connecting seat 6 is integrally sealed and connected to the second bag body 200 (air bag), and the outer connecting seat 6 is threadedly connected to the second valve seat 2, and the second bag body 200 is located in the second accommodating cavity 301 of the barrel body 300. The inner connecting seat 7 is integrally sealed and connected to the first bag body 100 (liquid bag), and the first bag body 100 is located in the first accommodating cavity 201 of the second bag body 200, and the inner connecting seat 7 is threadedly connected to the first valve seat 1.

[0049] When the beer in the first bag body 100 needs to be taken out, the liquid taking probe 8 presses down the valve core 3 and the first valve seat 1, and the valve core 3 and the first valve seat 1 slide, and the air enters the second cavity 23 from the second port 211 (see the dotted arrow), and enters the second bag body 200 from the first port 221. The gas entering the second bag body 200 squeezes the first bag body 100, and the beer in the first bag body 100 flows out of the liquid taking hole 81 through the lower port 31 and the connecting cavity 322 (see the solid arrow).

[0050] The basic principle, main features and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes, modifications, substitutions and variants, which all fall within the scope of the present invention claimed.

Claims

1. A valve body, characterized in that: The valve core (3) comprises a first valve seat (1) and a valve core (3), wherein the valve core (3) is slidably connected to the first valve seat (1), the first valve seat (1) is provided with a first cavity (14) for accommodating the valve core (3), and an inlet (112) and an outlet (241) which are connected to the first cavity (14), the two ends of the valve core (3) are an upper end and a lower end respectively, the lower end is connected to the inlet (112), and the upper end is connected to the outlet (241), a first elastic member (5) is provided in the first cavity (14) for maintaining the lower end of the valve core (3) in sealing contact with the inlet (112), and the valve core (3) comprises an upper port (321), a connecting cavity (322) and a lower port (31) which are connected to each other; 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 member (5), the valve core (3) closes the inlet (112), and the first cavity (14) is connected with the outlet (241) via the lower port (31), the connecting cavity (322), and the upper port (321); in the conducting state, the valve core (3) overcomes the elastic force of the first elastic member (5) to open the inlet (112), and an end of the inlet (112) away from the first cavity (14) is connected with the first cavity (14).

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

3. The valve body according to claim 1, characterized in that: A first sealing member (34) is connected between the lower end and the inlet (112), and a second sealing member (25) is connected between the upper end and the outlet (241). In the sealed state, under the elastic force of the first elastic member (5), the valve core (3) closes the inlet (112) through the first sealing member (34).

4. The valve body according to claim 1 or 3, characterized in that: The valve seat (2) further comprises a second valve seat (2), the second valve seat (2) comprising a second cavity (23), the first valve seat (1) being arranged in the second cavity (23) and being slidably connected to the second valve seat (2), and a second elastic member (4) being connected between the first valve seat (1) and the second valve seat (2).

5. The valve body according to claim 4, characterized in that: The elastic coefficient of the first elastic member (5) is smaller than the elastic coefficient of the second elastic member (4).

6. The valve body according to claim 4 as dependent on claim 3, characterized in that The second valve seat (2) comprises a first port (221) and a second port (211) which are connected to the second cavity (23); the inlet (112) end of the first valve seat (1) passes through the first port (221) and is gap-matched with the first port (221); a third sealing member 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) component is sealed against the second port (211) through the third sealing member; the third sealing member and the second sealing member (25) are an integral structure.

7. The valve body according to claim 1 or 3, characterized in that: A connecting plate (13) is connected to one side of the inlet (112) of the first valve seat (1); the lower end of the valve core (3) is slidably connected to the connecting plate (13); the connecting plate (13) is provided with a through hole (131); the connecting plate (13) and the first valve seat (1) enclose a third cavity (113).

8. The valve body according to claim 7 as dependent on claim 3, characterized in that The first sealing member (34) is located in the third cavity (113); in the sealed state, the third cavity (113) is not connected to the first cavity (14); in the conductive state, the third cavity (113) is connected to the first cavity (14).

9. A container, characterized in that: Comprising the valve body according to any one of claims 1-8.

10. The container according to claim 9 which refers to the valve body according to claim 4, characterized in that The inlet (112) end of the first valve seat (1) is detachably connected to a first bag body (100), the first port (221) end of the second valve seat (2) is connected to a second bag body (200), the second bag body (200) is provided with a first accommodating cavity (201), the first bag body (100) is located in the first accommodating cavity (201), the second port (211) end of the valve seat is detachably connected to a barrel body (300), the barrel body (300) is provided with a second accommodating cavity (301), and the second bag body (200) is located in the second accommodating cavity (301).

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