One-way valve device with variable response time

Abstract

The invention discloses a one-way valve with variable response time, and belongs to the technical field of one-way valves. Comprising a valve seat, a plug, a spring and a valve element adjusting assembly, the plug is arranged at one end of the valve seat in a sealed mode, an oil inlet, an oil outlet and a first cavity are formed in the other end of the valve seat, the first cavity is communicated with the oil inlet and the oil outlet, and the valve element adjusting assembly is arranged in the first cavity in a sliding mode. The spring is arranged in the valve seat, one end of the spring abuts against one end of the plug, the other end of the spring abuts against the valve element adjusting assembly, and the end, away from the spring, of the valve element adjusting assembly is arranged between the oil inlet and the oil outlet. The valve element adjusting assembly is used for adjusting the pre-tightening force of the spring. The adjusting process of the spring pretightening force of the one-way valve is simplified, and the reliability and stability of a hydraulic system are improved.

Description

Technical Field

[0001] The invention relates to the technical field of one-way valves, and in particular to a one-way valve device with a variable response time. Background Art

[0002] A one-way valve, also known as a check valve, is a valve used to control the flow direction of a fluid (such as liquid or gas). Its main function is to allow the fluid to flow in one direction and prevent the fluid from flowing in the opposite direction. When working, the one-way valve realizes flow control by opening and closing the valve core. It is widely used in hydraulic systems, pump systems, gas delivery systems, etc. to prevent the backflow of liquid or gas and ensure the safety and stability of the system.

[0003] The existing one-way valve has a fixed valve core size and opening pressure setting. Its structure includes a valve body, valve core and spring. The P port is used for oil inlet and the T port is used for oil outlet. Under normal circumstances, the flow can flow from the P port to the T port, while the flow in the opposite direction is blocked. The opening pressure of the valve core is fixed by design, and its performance is usually verified by testing after the product is assembled.

[0004] The existing technology has the following defects: due to the fixed size of the valve core, the opening pressure of the product may not meet the design requirements after assembly, resulting in the following situations: if the opening pressure is too low, it is necessary to adjust the preload of the spring by adding a gasket, which may cause additional costs and waste of time; if the opening pressure is too high, the parts need to be turned, resulting in rework in the factory and reduced production efficiency, increasing production costs, and affecting the reliability and stability of the hydraulic system, so there is room for improvement. Summary of the invention

[0005] In order to solve the above-mentioned technical problems, the present invention provides a variable response time one-way valve device to solve the technical problems that the existing one-way valve core size is fixed, the method of adjusting the spring preload is relatively cumbersome, and the reliability and stability of the hydraulic system are affected.

[0006] The present invention is achieved through the following technical solutions: A variable response time one-way valve device comprises a valve seat, a plug, a spring and a valve core adjustment assembly, the plug is sealingly arranged at one end of the valve seat, the other end of the valve seat is provided with an oil inlet, an oil outlet and a first chamber, the first chamber is connected to the oil inlet and the oil outlet, the valve core adjustment assembly is slidably arranged in the first chamber, the spring is arranged in the valve seat, one end of the spring abuts against one end of the plug, the other end of the spring abuts against the valve core adjustment assembly, the end of the valve core adjustment assembly away from the spring is arranged between the oil inlet and the oil outlet, and the valve core adjustment assembly is used to adjust the preload force of the spring.

[0007] Preferably, the valve core adjustment assembly includes a valve core member and an adjustment member, the valve core member is threadedly connected to the adjustment member, the valve core member is arranged between the oil inlet and the oil outlet, and the adjustment member abuts against the spring.

[0008] Preferably, the plug is further provided with a guide column, the guide column is arranged along the axial direction of the one-way valve, the adjusting member is provided with a guide hole, and the guide column is plug-fitted with the guide hole.

[0009] Preferably, the valve core component is provided with a second chamber therein, and an oil passage is provided in communication between the second chamber and the first chamber.

[0010] Preferably, a third chamber is further provided in the valve seat, the third chamber is coaxially arranged with the first chamber, the spring is arranged in the third chamber, and the cross-sectional area of ​​the third chamber is larger than the cross-sectional area of ​​the first chamber.

[0011] Preferably, a first angle groove is provided at one end of the valve core member close to the oil inlet.

[0012] Preferably, a second angle groove is provided at one end of the plug away from the spring.

[0013] Preferably, a sealing gasket is provided between the plug and the valve seat.

[0014] Preferably, the guide hole and the guide column are loosely matched.

[0015] The beneficial effects of the present invention are: 1. By setting the valve core adjustment component, it can slide in the first chamber, and the opening pressure of the one-way valve can be adjusted by adjusting the preload of the spring. By adjusting the position of the valve core adjustment component, the preload of the spring can be changed, thereby adjusting the opening pressure of the one-way valve. The plug is used to seal one end of the valve seat, and the other end of the valve seat has an oil inlet, an oil outlet and a first chamber, and the first chamber connects the oil inlet and the oil outlet. The valve core adjustment component can slide in the first chamber, and the spring is set in the valve seat and abuts against the plug and the valve core adjustment component at both ends. Through this design, the opening pressure of the one-way valve can be easily adjusted after assembly, avoiding the situation where rework is required due to non-compliance with the opening pressure; 2. By setting a second chamber in the valve core part and connecting it with the first chamber through an oil channel, the problem of communication between the valve core part and the first chamber is solved. The second chamber can be realized in a variety of ways. For example, an independent chamber can be machined in the valve core part, and an oil channel can be opened at an appropriate position to connect it with the first chamber. The design of the oil channel can be optimized according to actual needs to ensure smooth and effective control of the liquid flow. By setting a second chamber in the valve core part and connecting it with the first chamber through an oil channel, the problem of communication between the valve core part and the first chamber can be effectively solved; 3. The third chamber is set in the valve seat, the third chamber is coaxially arranged with the first chamber, the spring is placed in the third chamber, and the cross-sectional area of ​​the third chamber is larger than that of the first chamber. The spring can be selected with appropriate materials and specifications as needed to adapt to the size and shape of the third chamber. The cross-sectional area of ​​the third chamber is larger than that of the first chamber. This design can provide a larger space for the spring, so that it can be more evenly stressed during operation, reduce deformation and wear of the spring, and improve the service life and performance stability of the one-way valve.

[0016] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the background technology, the drawings required for use in the embodiments of the present invention or the background technology will be described below.

[0018] The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and, together with the specification, are used to illustrate the technical solutions disclosed in the present invention.

[0019] Figure 1 It is a schematic diagram of the overall structure of the one-way valve device of the present invention; Figure 2 It is an overall cross-sectional schematic diagram of the one-way valve device of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0020] Legend: 1. Valve seat; 2. Plug; 3. Spring; 4. Valve core adjustment assembly; 41. Valve core member; 42. Adjustment member; 5. Oil inlet; 6. Oil outlet; 7. First chamber; 8. Guide column; 9. Guide hole; 10. Second chamber; 11. Third chamber; 12. First angle groove; 13. Second angle groove; 14. Sealing gasket; 15. Oil channel. DETAILED DESCRIPTION In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0021] 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.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", The directions or positional relationships indicated by "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings, or are the directions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0026] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0027] A one-way valve, also known as a check valve, is a valve used to control the direction of fluid flow. Its main function is to allow fluid to flow in one direction while preventing the fluid from flowing in the opposite direction. When working, the one-way valve realizes flow control by opening and closing the valve core. It is widely used in hydraulic systems, pump systems, gas delivery systems, etc. to prevent the backflow of liquid or gas and ensure the safety and stability of the system. The existing one-way valve has a fixed valve core size and opening pressure setting. Its structure includes a valve body, a valve core and a spring. The P port is used for oil inlet and the T port is used for oil outlet. Under normal circumstances, the liquid flow can flow from the P port to the T port, while the flow in the opposite direction is blocked. The opening pressure of the valve core is fixed by design, and its performance is usually verified by testing after the product is assembled.

[0028] In the prior art, the valve core size and opening pressure of the one-way valve are fixed, which may result in the opening pressure not meeting the design requirements after assembly. In order to solve this problem, the present invention provides a one-way valve device with adjustable spring preload. Specifically, the valve core adjustment component is designed so that it can slide in the first chamber, and the opening pressure of the one-way valve is adjusted by adjusting the preload of the spring. Therefore, even after assembly, the opening pressure of the one-way valve can be easily adjusted, avoiding the situation where the opening pressure does not meet the design requirements.

[0029] See also Figure 1-Figure 3 A variable response time one-way valve device comprises a valve seat 1, a plug 2, a spring 3 and a valve core adjustment assembly 4. The plug 2 is sealingly arranged at one end of the valve seat 1, and the other end of the valve seat 1 is provided with an oil inlet 5, an oil outlet 6 and a first chamber 7. The first chamber 7 is connected with the oil inlet 5 and the oil outlet 6. The valve core adjustment assembly 4 is slidably arranged in the first chamber 7. The spring 3 is arranged in the valve seat 1, one end of the spring 3 abuts against one end of the plug 2, and the other end of the spring 3 abuts against the valve core adjustment assembly 4. The end of the valve core adjustment assembly 4 away from the spring 3 is arranged between the oil inlet 5 and the oil outlet 6, and the valve core adjustment assembly 4 is used to adjust the preload force of the spring 3.

[0030] By setting the valve core adjustment component 4, it can slide in the first chamber 7, and the opening pressure of the one-way valve can be adjusted by adjusting the preload of the spring 3. By adjusting the position of the valve core adjustment component 4, the preload of the spring 3 can be changed, thereby adjusting the opening pressure of the one-way valve. The plug 2 is used to seal one end of the valve seat 1, and the other end of the valve seat 1 has an oil inlet 5, an oil outlet 6 and a first chamber 7, and the first chamber 7 connects the oil inlet 5 and the oil outlet 6. The valve core adjustment component 4 can slide in the first chamber 7, and the spring 3 is set in the valve seat 1 and abuts against the plug 2 and the valve core adjustment component 4 at both ends. Through this design, the opening pressure of the one-way valve can be easily adjusted after assembly, avoiding the situation where the opening pressure does not meet the requirements and rework is required.

[0031] In order to simplify the structure of the valve core member 41 and improve the flow efficiency of the liquid in the valve core member 41, based on this, in one embodiment, the valve core adjustment component 4 includes a valve core member 41 and an adjustment member 42, the valve core member 41 is threadedly connected to the adjustment member 42, the valve core member 41 is arranged between the oil inlet 5 and the oil outlet 6, and the adjustment member 42 abuts against the spring 3. The threaded connection method of the valve core member 41 and the adjustment member 42 can adopt standard metric threads or imperial threads, and the specific thread specifications can be selected according to actual needs. The abutting part of the adjustment member 42 and the spring 3 can be designed to be in plane contact or curved contact to ensure uniform force during the adjustment process. The valve core member 41 can be made of high-strength material to improve its wear resistance and service life. The adjustment member 42 can be designed to be manually adjusted or adopt an automatic adjustment mechanism to meet the use requirements of different occasions. Through the above design, the valve core adjustment component 4 can effectively solve the problem in the prior art that the valve core size is fixed and the opening pressure does not meet the design requirements. Specifically, by adjusting the adjusting member 42, the preload force of the spring 3 can be easily changed, thereby realizing accurate control of the valve core opening pressure. This avoids the cumbersome steps of adjusting the opening pressure by adding gaskets or turning in the prior art, reduces production costs, improves production efficiency, and ensures the reliability and stability of the hydraulic system.

[0032] In order to simplify the structure of the valve core member 41 and improve the flow efficiency of the liquid in the valve core member 41, based on this, in one embodiment, a guide column 8 is also provided on the plug 2, and the guide column 8 is arranged along the axial direction of the one-way valve. A guide hole 9 is provided on the adjusting member 42, and the guide column 8 is plugged and matched with the guide hole 9. Through the cooperation of the guide column 8 and the guide hole 9, it is ensured that the adjusting member 42 remains stable in the axial direction, and the deviation of the adjusting member 42 caused by the spring 3 force or fluid pressure is avoided, thereby achieving accurate adjustment of the preload force of the spring 3, solving the problem of possible deviation of the adjusting member 42 during operation, and improving the reliability and stability of the one-way valve. The guide column 8 can adopt a cylindrical structure, and its diameter and length are designed according to the size and use requirements of the one-way valve. The diameter of the guide hole 9 is slightly larger than the diameter of the guide column 8 to ensure that the guide column 8 can be smoothly inserted into the guide hole 9, but the gap should be controlled within a reasonable range to provide sufficient guiding effect. The guide column 8 and the guide hole 9 can be manufactured by machining, mold forming, etc. to ensure their dimensional accuracy and surface finish.

[0033] In order to simplify the structure of the valve core member 41 and improve the flow efficiency of the liquid in the valve core member 41, based on this, in one embodiment, the valve core member 41 is provided with a second chamber 10, and an oil passage 15 is provided between the second chamber 10 and the first chamber 7. By providing the second chamber 10 in the valve core member 41 and communicating with the first chamber 7 through the oil passage 15, the communication problem between the valve core member 41 and the first chamber 7 is solved. This design allows the liquid to flow in the valve core member 41, thereby improving the response time and fluid control performance of the valve. The second chamber 10 can be realized in a variety of ways. For example, an independent chamber can be machined in the valve core member 41, and an oil passage 15 can be opened at an appropriate position to communicate with the first chamber 7. The design of the oil passage 15 can be optimized according to actual needs to ensure smooth and effective control of the liquid flow. In addition, the size and position of the oil passage 15 can also be adjusted according to the specific structure and functional requirements of the valve core member 41 to achieve the best fluid control effect. By providing the second chamber 10 in the valve core member 41 and communicating with the first chamber 7 through the oil passage 15, the communication problem between the valve core member 41 and the first chamber 7 can be effectively solved. This design not only simplifies the structure of the valve core member 41, but also improves the flow efficiency of the liquid in the valve core member 41, thereby improving the response time of the valve and the fluid control performance.

[0034] In order to reduce the deformation and wear of the spring 3 and avoid the stress concentration phenomenon generated when the spring 3 works in a narrow space, based on this, in one embodiment, a third chamber 11 is also provided in the valve seat 1, the third chamber 11 is coaxially arranged with the first chamber 7, the spring 3 is arranged in the third chamber 11, and the cross-sectional area of ​​the third chamber 11 is larger than the cross-sectional area of ​​the first chamber 7. The third chamber 11 is provided in the valve seat 1, the third chamber 11 is coaxially arranged with the first chamber 7, the spring 3 is placed in the third chamber 11, and the cross-sectional area of ​​the third chamber 11 is larger than the cross-sectional area of ​​the first chamber 7. By providing the third chamber 11 in the valve seat 1 and placing the spring 3 in the third chamber 11, the working environment and stress of the spring 3 can be optimized, thereby improving the response time and overall performance of the one-way valve. The third chamber 11 can be formed in the valve seat 1 by a processing technology to ensure that it is coaxially arranged with the first chamber 7. The spring 3 can select suitable materials and specifications as needed to adapt to the size and shape of the third chamber 11. The cross-sectional area of ​​the third chamber 11 is larger than that of the first chamber 7. This design can provide a larger space for the spring 3, so that the force is more evenly applied during operation, reduce the deformation and wear of the spring 3, and improve the service life and performance stability of the one-way valve. By setting the third chamber 11 in the valve seat 1 and placing the spring 3 therein, the working environment of the spring 3 is optimized, the force condition is more reasonable, and the response time and overall performance of the one-way valve are improved. Compared with the prior art, the present application has made improvements in structural design, solved the problem of setting the spring 3 in different chambers, effectively avoided the stress concentration phenomenon caused by the spring 3 working in a small space, and improved the reliability and stability of the one-way valve.

[0035] In order to simplify the adjustment process of the valve core member 41 and the adjusting member 42, and improve the production efficiency and the reliability of the product, based on this, in one embodiment, a first angle groove 12 is provided at one end of the valve core member 41 close to the oil inlet 5. The first angle groove 12 is provided at one end of the valve core member 41 close to the oil inlet 5. By providing the first angle groove 12 at one end of the valve core member 41, it is convenient to adjust the plug-in length of the valve core member 41 and the adjusting member 42, thereby adjusting the preload force of the spring 3. The setting of the first angle groove 12 can be implemented in a variety of ways. For example, the first angle groove 12 can be designed to have different angles and depths to meet different fluid control requirements. By providing the first angle groove 12, the present application can more flexibly adjust the plug-in length of the valve core member 41, thereby accurately controlling the preload force of the spring 3. Compared with the prior art, the present application can effectively solve the problem that the opening pressure does not meet the design requirements due to the fixed valve core size, reduce rework and adjustment in the production process, and improve production efficiency and product reliability.

[0036] In order to make the installation of the plug 2 more secure and improve the reliability and stability of the one-way valve, based on this, in one embodiment, a second angle groove 13 is provided at the end of the plug 2 away from the spring 3. By providing the second angle groove 13 at the end of the plug 2 away from the spring 3, the second angle groove 13 facilitates the installation of the plug 2. The second angle groove 13 can be formed on the plug 2 by mechanical processing. Specifically, it can be achieved by mechanical processing methods such as turning and milling. The size and shape of the second angle groove 13 can be adjusted according to actual needs. For example, it can be designed to be circular, square or other geometric shapes to meet different installation requirements. Compared with the prior art, the technical solution of the present application simplifies the installation process of the plug 2, improves the installation efficiency, and reduces the production cost. At the same time, the design of the second angle groove 13 makes the installation of the plug 2 more secure, further improving the reliability and stability of the one-way valve.

[0037] In order to prevent the leakage of liquid or gas and improve the sealing performance and stability of the one-way valve, based on this, in one embodiment, a sealing gasket 14 is provided between the plug 2 and the valve seat 1. The sealing gasket 14 plays a sealing role between the plug 2 and the valve seat 1 to ensure that the liquid or gas will not leak from the connection during the flow process. By arranging the sealing gasket 14 between the plug 2 and the valve seat 1, the sealing problem can be effectively solved and the working reliability and stability of the one-way valve can be ensured. The sealing gasket 14 can be made of materials such as rubber and polytetrafluoroethylene (PTFE), which have good corrosion resistance and high temperature resistance. The thickness and size of the sealing gasket 14 can be adjusted according to the gap between the plug 2 and the valve seat 1 to ensure the best sealing effect. Further, the sealing gasket 14 can be designed as an annular gasket, a flat gasket or other suitable shapes to meet different application requirements. By arranging the sealing gasket 14 between the plug 2 and the valve seat 1, the sealing problem between the plug 2 and the valve seat 1 in the prior art can be effectively solved, the leakage of liquid or gas can be prevented, and the sealing performance and stability of the one-way valve can be improved. Compared with the prior art, the technical solution of the present application can better ensure the working reliability of the one-way valve and reduce system failures or leakage problems caused by poor sealing.

[0038] In order to improve the service life and reliability of the guide shaft, based on this, in one embodiment, the guide hole 9 and the guide column 8 have clearance fit. The implementation methods of the clearance fit between the guide hole 9 and the guide column 8 can be various. Specifically, the size of the guide hole 9 can be slightly larger than the size of the guide column 8 to ensure that there is a certain gap between the two. The gap can be fine-tuned according to specific application requirements to achieve the best matching effect. As a preferred embodiment, the dimensional accuracy of the guide hole 9 and the guide column 8 can be ensured by precision machining technology, so as to achieve a stable and reliable clearance fit. In addition, the guide hole 9 and the guide column 8 can also be made of wear-resistant materials to improve their service life and reliability. The implementation methods of the clearance fit between the guide hole 9 and the guide column 8 can be various. Specifically, the size of the guide hole 9 can be slightly larger than the size of the guide column 8 to ensure that there is a certain gap between the two. The gap can be fine-tuned according to specific application requirements to achieve the best matching effect. As a preferred embodiment, the dimensional accuracy of the guide hole 9 and the guide column 8 can be ensured by precision machining technology, so as to achieve a stable and reliable clearance fit. In addition, the guide hole 9 and the guide column 8 can also be made of wear-resistant materials to improve their service life and reliability.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A variable response time one-way valve, characterized in that: It includes a valve seat, a plug, a spring and a valve core adjustment assembly, the plug is seal-arranged at one end of the valve seat, the other end of the valve seat is provided with an oil inlet, an oil outlet and a first chamber, the first chamber is connected to the oil inlet and the oil outlet, the valve core adjustment assembly is slidably arranged in the first chamber, the spring is arranged in the valve seat, one end of the spring abuts against one end of the plug, the other end of the spring abuts against the valve core adjustment assembly, the end of the valve core adjustment assembly away from the spring is arranged between the oil inlet and the oil outlet, and the valve core adjustment assembly is used to adjust the preload force of the spring.

2. A variable response time one-way valve device according to claim 1, characterized in that: The valve core adjustment component includes a valve core member and an adjustment member, the valve core member is threadedly connected to the adjustment member, the valve core member is arranged between the oil inlet and the oil outlet, and the adjustment member abuts against the spring.

3. A variable response time one-way valve device according to claim 2, characterized in that: The plug is also provided with a guide column, which is arranged along the axial direction of the one-way valve. The adjusting member is provided with a guide hole, and the guide column is plug-fitted with the guide hole.

4. A variable response time one-way valve device according to claim 2, characterized in that: The valve core component is provided with a second chamber therein, and an oil passage is provided between the second chamber and the first chamber in communication.

5. A variable response time one-way valve device according to claim 4, characterized in that: A third chamber is also provided in the valve seat. The third chamber is coaxially arranged with the first chamber. The spring is arranged in the third chamber. The cross-sectional area of ​​the third chamber is larger than the cross-sectional area of ​​the first chamber.

6. A variable response time check valve device according to claim 2, characterized in that: A first angle groove is arranged at one end of the valve core member close to the oil inlet.

7. A variable response time one-way valve device according to claim 6, characterized in that: A second angle groove is arranged at one end of the plug away from the spring.

8. The variable response time one-way valve device according to claim 1, characterized in that: A sealing gasket is provided between the plug and the valve seat.

9. The variable response time one-way valve device according to claim 3, characterized in that: The guide hole and the guide column are clearance-matched.

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