One-way valve and cylinder valve assembly

Abstract

The one-way valve comprises a locking piece, a one-way valve body and a sealing ring, the locking piece is connected with the one-way valve body, and at least part of the locking piece is located in the one-way valve body; the sealing ring is located between the locking piece and the one-way valve body. A base table is arranged in the middle of the one-way valve body, a groove is formed in the end, facing the base table, of the locking piece, and the sealing ring is located between the upper end face of the base table and the groove. According to the one-way valve, the sealing ring is located between the locking piece and the valve body and fixed by the base table and the groove, the risk of fluid leakage caused by moving or falling of the sealing ring is reduced, the reliability of the one-way valve is improved, the sealing ring can be effectively prevented from moving due to gas pressure or movement in the working process, and therefore the sealing performance is improved.

Description

Technical Field

[0001] This application relates to the field of valve technology, specifically to a one-way valve and a gas cylinder valve assembly. Background Technology

[0002] A check valve is a valve that allows fluid (gas or liquid) to flow in only one direction. Its main function is to prevent backflow and ensure unidirectional flow of fluid within the system. Check valves are widely used in various fluid control systems, such as water pipes, pneumatic systems, and hydraulic systems.

[0003] In existing one-way valves, the valve core is subjected to significant fluid pressure and movement during operation, which can cause the sealing ring to be carried away or moved, resulting in a deterioration of the sealing effect between the valve body and the valve core, leading to fluid leakage. In severe cases, it may even cause permanent failure, indicating poor sealing performance of the one-way valve.

[0004] Therefore, the structure of the existing check valve has room for further improvement. Utility Model Content

[0005] In view of this, and in response to the technical problem in the prior art that the sealing ring is easily carried away or moved, resulting in a deterioration of the sealing effect between the valve body and the valve core, this application provides a one-way valve. By changing the internal structure of the one-way valve, the sealing ring can be stably fixed between the valve body and the valve core. When the one-way valve is in operation, it can prevent the sealing ring from being carried away or moved, thereby improving the sealing effect of the one-way valve.

[0006] To achieve the above objectives, this application provides the following technical solution: a one-way valve, comprising:

[0007] Locking components;

[0008] A one-way valve body, wherein the locking member is connected to the one-way valve body, and the locking member is at least partially located within the one-way valve body;

[0009] A sealing ring is located between the locking member and the one-way valve body;

[0010] The one-way valve body has a base in the middle, the locking member has a groove at one end facing the base, and the sealing ring is located between the upper end face of the base and the groove.

[0011] Compared to existing technologies, the sealing ring is located between the locking element and the valve body and is fixed by the base and groove. This reduces the risk of fluid leakage caused by the sealing ring moving or falling off, thereby improving the reliability of the check valve. It also effectively prevents the sealing ring from shifting due to gas pressure or movement during operation, thus improving sealing performance. The base provides a stable support surface for the sealing ring, ensuring that the locking element and sealing ring remain stable during operation. Intake or exhaust only affects the up-and-down movement of the check valve core, while the sealing ring remains stable, resulting in a good sealing effect.

[0012] Preferably, the one-way valve further includes a one-way valve core and an elastic element, wherein the one-way valve core is located between the sealing ring and the elastic element;

[0013] The locking element is hollow, the elastic element is connected to the inner wall of the locking element, and the one-way valve core can move up and down relative to the sealing ring.

[0014] In this embodiment, when the gas pressure exceeds a certain value, the one-way valve core will be pushed open to allow gas flow; when the gas pressure decreases, the one-way valve core will return to the sealing position under the action of the elastic element to prevent gas from flowing in reverse.

[0015] Preferably, the one-way valve body has an air inlet channel on one side and an air outlet channel on the other side, and a connecting gas channel is provided between the air inlet channel and the air outlet channel.

[0016] The outlet channel is higher than the lowest point of the inlet channel.

[0017] In this embodiment, the exhaust channel is higher than the lowest point of the intake channel. In the vertical direction, the intake channel is lower than the exhaust channel, which helps the gas to use gravity during flow, ensuring that the gas can flow out smoothly and avoiding gas accumulation or blockage.

[0018] Preferably, the locking member has threads, the one-way valve body has a threaded hole, and the locking member is threadedly connected to the one-way valve body.

[0019] In this embodiment, the locking element is threadedly connected to the one-way valve body, making the installation and disassembly of the one-way valve more convenient. Users can quickly perform maintenance and replacement, reducing maintenance costs and time. In addition, the threaded connection can also provide good sealing performance, prevent gas leakage, and ensure the safety and reliability of the one-way valve.

[0020] A gas cylinder valve assembly includes a one-way valve and a safety valve used in conjunction with the one-way valve, the safety valve comprising:

[0021] Valve cover;

[0022] A valve body, which is connected to the valve cover, includes at least two air inlets, each of which is connected to two gas cylinders.

[0023] A valve core, located between the valve cover and the valve body;

[0024] Each of the one-way valves corresponds to an air inlet, and the one-way valve is used to connect the valve body and the gas cylinder.

[0025] Compared with existing technologies, each one-way valve corresponds to one air inlet, which can ensure that gas flows from the gas cylinder into the valve body, effectively prevent gas backflow, effectively prevent mutual interference between gas cylinders, and ensure that the gas in the gas cylinder will not leak or cause other safety hazards due to pressure changes during use.

[0026] Preferably, the valve body is provided with a buffer chamber and an air outlet, the buffer chamber is connected to the air inlet, the buffer chamber is correspondingly arranged to the air outlet, and the valve core is at least partially located in the buffer chamber;

[0027] The air outlet is connected to the air inlet, and the air outlet is located at the end of the valve body away from the valve core.

[0028] In this embodiment, by setting a buffer chamber and an air outlet, the buffer chamber is used to regulate the flow of fluid, reduce the impact and fluctuation of fluid, and ensure the stable operation of the system. The buffer chamber can also play a role in pressure balancing.

[0029] Preferably, the valve body has a step in the middle, the step protrudes towards the valve core, the step is located between the buffer chamber and the air outlet, the side of the step is inclined towards the air inlet, and the step is used to limit the gas flow rate of the air inlet;

[0030] Wherein, the diameter of the step is R1, and the inner diameter of the air inlet is R2;

[0031] R2>2R1.

[0032] In this embodiment, the inner diameter of the air inlet is greater than twice the diameter of the step, so that about half of the gas in the air inlet enters the buffer chamber for circulation. This ensures that the step does not completely block the flow of gas when it flows into the buffer chamber, while effectively limiting the flow rate.

[0033] Preferably, the two check valves are symmetrically arranged along the center line of the valve body so that the air intake of the two check valves is symmetrically distributed;

[0034] The valve cover is detachably connected to the valve body.

[0035] In this embodiment, the one-way valves are symmetrically arranged along the center line of the valve body to ensure that the gas flow from the two gas cylinders is balanced, which enables efficient gas distribution between the two gas cylinders, ensures that the gas intake is evenly distributed and fully utilized, reduces pressure fluctuations caused by uneven gas flow, maximizes the utilization of gas in the gas cylinders, reduces gas waste, thereby improving the stability and reliability of the gas cylinder valve assembly and improving gas utilization efficiency.

[0036] Preferably, the safety valve further includes a filter element, and the valve body is also provided with an airflow channel. The filter element is connected to the inner wall of the valve body and is located within the airflow channel.

[0037] The valve body has a through hole in its inner wall and an airflow hole in its step. The airflow channel is connected to the buffer chamber through the through hole and the airflow hole. The airflow channel and the buffer chamber are located on the same axis.

[0038] In this embodiment, the airflow channel is connected to the buffer chamber through the through hole and the airflow hole, which can adjust the flow direction and flow rate of the gas, ensuring that the gas can flow smoothly in the valve and reducing flow resistance.

[0039] Preferably, the valve cover is provided with at least two air holes, with adjacent air holes spaced apart, and the air holes are used to allow gas to flow through the valve cover.

[0040] In this embodiment, when the internal pressure difference between the valve cover and the valve is too large, the vent can prevent the valve cover from bulging when adjusting the air pressure up and down, which is beneficial to the up and down movement of the valve cover. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of a one-way valve provided in an embodiment of this application;

[0042] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of AA.

[0043] Figure 3 This is a three-dimensional structural schematic diagram of a gas cylinder valve assembly provided in an embodiment of this application;

[0044] Figure 4 This is a side view of a gas cylinder valve assembly provided in an embodiment of this application;

[0045] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure of the middle BB section;

[0046] Figure 6 This is a schematic diagram of the structure of a safety valve provided in one embodiment of this application;

[0047] Figure 7 yes Figure 6 Schematic diagram of the cross-sectional structure of the middle CC section;

[0048] Figure label:

[0049] 1. Check valve; 2. Safety valve; 3. Pressure relief device;

[0050] 11. Locking element; 12. One-way valve body; 13. Sealing ring; 14. One-way valve core; 15. Elastic element; 121. Inlet passage; 122. Outlet passage; 123. Gas passage; 124. Base;

[0051] 21. Air inlet; 22. Valve cover; 23. Valve core; 24. Valve body; 25. Air outlet; 26. Filter element; 27. Sealing ring; 28. Spring;

[0052] 221. Vent; 241. Buffer chamber; 242. Step; 243. Airflow channel; 2421. Airflow hole. Detailed Implementation

[0053] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.

[0054] In the description of this application, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0055] Those skilled in the art should understand that in the disclosure of this application, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, the above terms should not be construed as limitations on this application.

[0056] The present application will now be described in further detail with reference to the accompanying drawings, see below. Figures 1 to 7 illustrate.

[0057] This embodiment provides a one-way valve, which is applied in the field of valve technology, specifically, as follows: Figures 1 to 2As shown, the one-way valve 1 includes a locking member 11, a one-way valve body 12, and a sealing ring 13. The sealing ring 13 is an O-ring. The locking member 11 is connected to the one-way valve body 12. The locking member 11 is at least partially located inside the one-way valve body 12. The sealing ring 13 is located between the locking member 11 and the one-way valve body 12. The one-way valve body 12 has a base 124 in the middle, and a connecting hole for gas to pass through in the middle of the base 124. The locking member 11 has a groove at one end facing the base 124. The sealing ring 13 is located between the upper end face of the base 124 and the groove. The sealing ring 13 is stuck between the groove and the upper end face of the base 124. The base 124 can provide a stable support surface for the sealing ring 13, ensuring that the locking member 11 and the sealing ring 13 remain stable during operation, reducing displacement caused by vibration or pressure changes. The intake or exhaust of air can affect the up and down movement of the one-way valve core 14, while the sealing ring 13 remains stable and the sealing effect is good.

[0058] Specifically, such as Figure 2 As shown, the one-way valve 1 also includes a one-way valve core 14 and an elastic element 15. The one-way valve core 14 is a steel ball, and the elastic element 15 is a spring. The locking element 11 is hollow inside. The one-way valve core 14 is located between the sealing ring 13 and the elastic element 15. The elastic element 15 is connected to the inner wall of the locking element 11. The one-way valve core 14 can move up and down relative to the sealing ring 13. When the gas pressure exceeds a certain value, the one-way valve core 14 will be pushed open to allow gas flow. When the gas pressure decreases, the one-way valve core 14 will return to the sealing position under the action of the elastic element 15 to prevent gas from flowing backward.

[0059] Furthermore, such as Figure 2 As shown, the one-way valve body 12 has an inlet channel 121 on one side and an outlet channel 122 on the other side. The inlet channel 121 and the outlet channel 122 are the channels for gas to flow in and out. A connecting gas channel 123 is provided between the inlet channel 121 and the outlet channel 122, allowing gas to flow from the inlet channel 121 to the outlet channel 122 through the gas channel 123, ensuring the directionality of gas flow. The outlet channel 122 is higher than the lowest point of the inlet channel 121, meaning that vertically, the position of the inlet channel 121 is lower than the position of the outlet channel 122. This helps the gas utilize gravity during flow, ensuring smooth gas flow and avoiding gas accumulation or blockage.

[0060] Furthermore, such as Figure 2As shown, the locking member 11 is provided with threads, and the one-way valve body 12 is provided with threaded holes. The locking member 11 is threadedly connected to the one-way valve body 12, which makes the installation and disassembly of the one-way valve 1 more convenient. Users can quickly maintain and replace it, reducing maintenance costs and time. In addition, the threaded connection can also provide good sealing performance, prevent gas leakage, and ensure the safety and reliability of the one-way valve 1.

[0061] A gas cylinder valve assembly, such as Figures 3 to 7 As shown, the system includes a one-way valve 1, a safety valve 2 used in conjunction with the one-way valve 1, and a pressure relief device 3. The pressure relief device 3 is connected to the one-way valve 1 and is located between the two one-way valves 1. The pressure relief device 3 and the two one-way valves 1 are symmetrically arranged. The pressure relief device 3 is used to relieve the pressure of the gas in the safety valve 2. The pressure relief device 3 can prevent safety hazards caused by excessive gas pressure and ensure the safe operation of the system under high pressure conditions. The safety valve 2 includes a valve cover 22, a valve body 24, and a valve core 23. The valve body 24 is connected to the valve cover 22, and the valve cover 22 is connected to the top of the valve body 24. The valve cover 22 is used to close the top of the valve body 24 and provide support for the valve core 23. The valve core 23 is mainly responsible for the flow of gas. The valve core 23 can move freely within the valve body 24. The valve body 24 is mainly used to provide support and space for the valve core 23. The valve body 24 includes at least two air inlets 21 with equal opening areas. The air inlets 21 are connected to two gas cylinders respectively. The valve core 23 is located between the valve cover 22 and the valve body 24.

[0062] Each one-way valve 1 corresponds to an air inlet 21. The one-way valve 1 is used to connect the valve body 24 and the gas cylinder, which can ensure that the gas flows from the gas cylinder into the valve body 24, effectively prevent the gas backflow, effectively prevent the mutual influence between gas cylinders, and ensure that the gas in the gas cylinder will not leak or cause other safety hazards due to pressure changes during use.

[0063] Furthermore, such as Figure 7 As shown, the valve body 24 is provided with a buffer chamber 241 and an air outlet 25. The buffer chamber 241 is connected to the air inlet 21, and the air inlet 21 is connected to the air outlet 25. The air outlet 25 is located at the end of the valve body 24 away from the valve core 23. The buffer chamber 241 and the air outlet 25 are correspondingly arranged. The valve core 23 is at least partially located in the buffer chamber 241. The buffer chamber 241 is usually used to regulate the flow of fluid, reduce the impact and fluctuation of fluid, and ensure the stable operation of the system. The buffer chamber 241 can also play a role in pressure balancing. When the valve core 23 is closed, the gas in the buffer chamber 241 can absorb some pressure, prevent the valve core 23 from being subjected to excessive impact force, and extend the service life of the valve.

[0064] Furthermore, such as Figure 7As shown, a step 242 is provided in the middle of the valve body 24. The step 242 protrudes towards the valve core 23 and is located between the buffer chamber 241 and the outlet 25. The side of the step 242 is inclined towards the inlet 21, which helps guide the gas flow, reduces turbulence when the gas flows in, and ensures that the gas enters the buffer chamber 241 in a smoother manner. The step 242 is used to limit the gas flow rate of the inlet 21, which helps control the amount of gas flowing in and prevents the gas flow rate from being too large, thereby protecting the safety and stability of the gas cylinder valve assembly. The diameter of the step 242 is R1, and the inner diameter of the inlet 21 is R2, where R2 > 2R1. This allows approximately half of the gas in the inlet 21 to enter the buffer chamber 241 for circulation, ensuring that the step 242 does not completely block the gas flow when the gas flows into the buffer chamber 241, while effectively limiting the flow rate.

[0065] Furthermore, such as Figures 3 to 5 As shown, two one-way valves 1 are symmetrically arranged along the centerline of the valve body 24, ensuring a symmetrical distribution of the gas intake from the two gas cylinders. This guarantees a balanced gas flow from both cylinders, enabling efficient gas distribution and ensuring uniform and full utilization of the gas intake. It also reduces pressure fluctuations caused by uneven gas flow, maximizing the utilization of the gas within the cylinders and minimizing gas waste. This improves the stability and reliability of the cylinder valve assembly and enhances gas utilization efficiency. The valve cover 22 is detachably connected to the valve body 24, and the valve cover 22 is fixed to the valve body 24 via a threaded connection, ensuring the internal sealing of the valve body 24.

[0066] Among them, a sealing ring 27 is provided between the valve core 23 and the valve cover 22, and a spring 28 is sleeved on the outer surface of the valve core 23. The spring 28 enables the valve core 23 to be more flexible when opening and closing, can quickly respond to operation commands, improve the working efficiency and response speed of the valve, and can also help the valve core 23 to quickly return to its original position.

[0067] Furthermore, such as Figure 7 As shown, the safety valve 2 also includes a filter element 26, and an airflow channel 243 is provided inside the valve body 24. The filter element 26 is connected to the inner wall of the valve body 24 and is located inside the airflow channel 243. The filter element 26 can effectively remove impurities and particulate matter from the gas and protect the internal components of the valve. The inner wall of the valve body 24 has a through hole, and the step 242 has an airflow hole 2421. The airflow channel 243 communicates with the buffer chamber 241 through the through hole and the airflow hole 2421. The airflow channel 243 and the buffer chamber 241 are located on the same axis, which can adjust the flow direction and flow rate of the gas, ensuring smooth gas flow within the valve and reducing flow resistance.

[0068] Furthermore, such as Figure 7As shown, the valve cover 22 is provided with at least two air holes 221, with two adjacent air holes 221 spaced apart. The air holes 221 are used to allow gas to flow in the valve cover 22. When the internal pressure difference between the valve cover 22 and the valve is too large, the air holes 221 can prevent the valve cover 22 from bulging when adjusting the air pressure up and down, which is beneficial to the up and down movement of the valve cover 22.

[0069] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A one-way valve, characterized in that, include: Locking component (11); One-way valve body (12), the locking member (11) is connected to the one-way valve body (12), and the locking member (11) is at least partially located inside the one-way valve body (12); A sealing ring (13) is located between the locking member (11) and the one-way valve body (12); The valve body (12) of the one-way valve is provided with a base (124) in the middle, and the locking member (11) is provided with a groove at one end facing the base (124). The sealing ring (13) is located between the upper end face of the base (124) and the groove.

2. The one-way valve according to claim 1, characterized in that, The one-way valve (1) further includes a one-way valve core (14) and an elastic element (15), wherein the one-way valve core (14) is located between the sealing ring (13) and the elastic element (15); The locking member (11) is hollow, the elastic member (15) is connected to the inner wall of the locking member (11), and the one-way valve core (14) can move up and down relative to the sealing ring (13).

3. The one-way valve according to claim 1, characterized in that, The one-way valve body (12) has an air inlet channel (121) on one side and an air outlet channel (122) on the other side. A gas channel (123) is provided between the air inlet channel (121) and the air outlet channel (122). The outlet passage (122) is higher than the lowest point of the inlet passage (121).

4. The one-way valve according to claim 1, characterized in that, The locking member (11) is provided with threads, and the one-way valve body (12) is provided with threaded holes. The locking member (11) is threadedly connected to the one-way valve body (12).

5. A gas cylinder valve assembly, characterized in that, Includes a one-way valve (1) and a safety valve (2) used in conjunction with the one-way valve (1), the safety valve (2) comprising: Valve cover (22); Valve body (24), the valve body (24) is connected to the valve cover (22), the valve body (24) includes at least two air inlets (21), the air inlets (21) are respectively connected to two gas cylinders; Valve core (23), the valve core (23) is located between the valve cover (22) and the valve body (24); Each of the one-way valves (1) corresponds to an air inlet (21), and the one-way valve (1) is used to connect the valve body (24) and the gas cylinder.

6. The gas cylinder valve assembly according to claim 5, characterized in that, The valve body (24) is provided with a buffer chamber (241) and an air outlet (25). The buffer chamber (241) is connected to the air inlet (21). The buffer chamber (241) and the air outlet (25) are respectively arranged. The valve core (23) is at least partially located in the buffer chamber (241). The air outlet (25) is connected to the air inlet (21), and the air outlet (25) is located at the end of the valve body (24) away from the valve core (23).

7. The gas cylinder valve assembly according to claim 6, characterized in that, The valve body (24) has a step (242) in the middle, the step (242) protrudes towards the valve core (23), the step (242) is located between the buffer chamber (241) and the air outlet (25), the side of the step (242) is inclined towards the air inlet (21), and the step (242) is used to limit the gas flow of the air inlet (21); Wherein, the diameter of the step (242) is R1, and the inner diameter of the air inlet (21) is R2; R2>2R1.

8. The gas cylinder valve assembly according to claim 5, characterized in that, The two check valves (1) are symmetrically arranged along the center line of the valve body (24) so ​​that the air intake of the two check valves (1) is symmetrically distributed; The valve cover (22) is detachably connected to the valve body (24).

9. The gas cylinder valve assembly according to claim 7, characterized in that, The safety valve (2) also includes a filter element (26), and the valve body (24) is also provided with an airflow channel (243). The filter element (26) is connected to the inner wall of the valve body (24), and the filter element (26) is located in the airflow channel (243). The valve body (24) has a through hole on its inner wall, and the step (242) has an airflow hole (2421). The airflow channel (243) is connected to the buffer chamber (241) through the through hole and the airflow hole (2421). The airflow channel (243) and the buffer chamber (241) are located on the same axis.

10. The gas cylinder valve assembly according to claim 5, characterized in that, The valve cover (22) is provided with at least two air holes (221), with two adjacent air holes (221) spaced apart, and the air holes (221) are used to allow gas to flow through the valve cover (22).

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