Variable response time one-way valve device

Abstract

The present invention discloses a one-way valve device with variable response time, which belongs to the field of one-way valve technology. It includes a valve seat, a plug, a spring and a valve core adjustment assembly. The plug is sealed and 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, and 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. The valve core adjustment assembly is used to adjust the preload force of the spring. The present invention simplifies the adjustment process of the preload force of the one-way valve spring and improves the reliability and stability of the hydraulic system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of one-way valve, in particular to a variable response time one-way valve device. BACKGROUND

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

[0003] The existing one-way valve has fixed valve core size and opening pressure setting, its structure includes a valve body, a valve core and a spring, P port is used for oil inlet, T port is used for oil outlet. Under normal circumstances, the liquid flow can flow from P port to T port, and the reverse flow is prevented. The opening pressure of the valve core is fixed, which is usually verified by testing after product assembly.

[0004] The existing technology has the following defects: due to the fixedness of the valve core size, the opening pressure of the product after assembly may not meet the design requirements, which may lead to the following situations: if the opening pressure is too low, the spring pre-tightening force needs to be adjusted by adding gaskets, which may cause additional cost and time waste; if the opening pressure is too high, the parts need to be turned, which causes rework and reduces production efficiency in the factory, increases production cost, and also affects the reliability and stability of the hydraulic system, so there is room for improvement. SUMMARY

[0005] In order to solve the above technical problems, the present application provides a variable response time one-way valve device to solve the technical problems of the existing one-way valve valve core size fixed, the way of adjusting the spring pre-tightening force is more cumbersome, and it also affects the reliability and stability of the hydraulic system.

[0006] The present application is realized by the following technical scheme:

[0007] A variable response time one-way valve device, comprising a valve seat, a plug, a spring and a valve core adjusting 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 port, an oil outlet port and a first chamber, the first chamber is communicated with the oil inlet port and the oil outlet port, the valve core adjusting assembly is slidingly 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 adjusting assembly, the end of the valve core adjusting assembly away from the spring is arranged between the oil inlet port and the oil outlet port, and the valve core adjusting assembly is used for adjusting the pre-tightening force of the spring.

[0008] Preferably, the valve core adjusting assembly comprises a valve core and an adjusting piece, the valve core is threadedly connected with the adjusting piece, the valve core is arranged between the oil inlet and the oil outlet, and the adjusting piece abuts against the spring.

[0009] Preferably, the plug is further provided with a guide column arranged in the axial direction of the one-way valve, and the adjusting piece is provided with a guide hole, and the guide column is inserted into the guide hole in a fit manner.

[0010] Preferably, the valve core is arranged in a second chamber, and an oil channel is arranged in communication between the second chamber and the first chamber.

[0011] Preferably, the valve seat is further provided with a third chamber, 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 greater than that of the first chamber.

[0012] Preferably, the valve core is provided with a first angular groove at one end close to the oil inlet.

[0013] Preferably, the plug is provided with a second angular groove at one end away from the spring.

[0014] Preferably, a sealing gasket is arranged between the plug and the valve seat.

[0015] Preferably, the guide hole and the guide column are in a clearance fit.

[0016] The present application has the following advantages:

[0017] 1. The valve core adjusting assembly is arranged to slide in the first chamber, and the opening pressure of the one-way valve is adjusted by adjusting the pre-tightening force of the spring. By adjusting the position of the valve core adjusting assembly, the pre-tightening force 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, the other end of the valve seat has an oil inlet, an oil outlet and a first chamber, and the first chamber is in communication with the oil inlet and the oil outlet. The valve core adjusting assembly can slide in the first chamber, and the spring is arranged in the valve seat and abuts against the plug and the valve core adjusting assembly at both ends. Through this design, the opening pressure of the one-way valve can be conveniently adjusted after assembly, and the situation that the opening pressure does not meet the requirements and requires rework is avoided.

[0018] 2. By setting a second chamber in the valve core and connecting it to the first chamber through an oil channel, the problem of communication between the valve core 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 and an oil channel can be opened at an appropriate position to connect it to the first chamber. The design of the oil channel can be optimized according to actual needs to ensure smooth and effective control of liquid flow. By setting a second chamber in the valve core and connecting it to the first chamber through an oil channel, the problem of communication between the valve core and the first chamber can be effectively solved.

[0019] 3. A third chamber is provided within the valve seat, coaxially arranged with the first chamber. The spring is placed within the third chamber, and its cross-sectional area is larger than that of the first chamber. The spring can be selected from appropriate materials and specifications to accommodate the size and shape of the third chamber. This larger cross-sectional area provides more space for the spring, ensuring more uniform force distribution during operation, reducing spring deformation and wear, and improving the service life and performance stability of the one-way valve.

[0020] 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

[0021] 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.

[0022] The accompanying drawings herein are incorporated into 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.

[0023] Figure 1 Schematic diagram of the overall structure of the one-way valve device of the present invention;

[0024] Figure 2 It is a schematic cross-sectional view of the entire one-way valve device of the present invention;

[0025] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0026] Legend: 1. Valve seat; 2. Plug; 3. Spring; 4. Valve core adjustment assembly; 41. Valve core part; 42. Adjusting part; 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

[0027] In order to make the technical personnel in the art better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0030] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0031] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] Some embodiments of the present application will be described in detail below with reference to the drawings. The embodiments described below and the features in the embodiments can be combined with each other without conflict.

[0033] Some embodiments of the present application will be described in detail below with reference to the drawings. The embodiments described below and the features in the embodiments can be combined with each other without conflict.

[0034] In order to further illustrate the technical means adopted by the present application to achieve the predetermined object of the invention and the effects thereof, the specific embodiments, structures, features and effects thereof according to the present application will be described in detail below in conjunction with the drawings and preferred embodiments.

[0035] A check valve, also known as a non-return valve, is a type of valve used to control the direction of fluid flow. Its main function is to allow fluid to flow in one direction while preventing it from flowing in the opposite direction. Check valves work by opening and closing the valve core to control flow, and are widely used in hydraulic systems, pump systems and gas delivery systems to prevent backflow of liquid or gas, ensuring the safety and stability of the system. Existing check valves have fixed valve core size and opening pressure settings, and their 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 reverse flow is prevented. The opening pressure of the valve core is fixed and usually verified by testing after product assembly.

[0036] In the prior art, the valve core size and opening pressure of the check valve are fixed, which may result in the opening pressure not meeting the design requirements after assembly. To solve this problem, the present application provides a check valve device with adjustable spring pre-tightening force. Specifically, by designing a valve core adjusting assembly that can slide within the first chamber, the opening pressure of the check valve can be adjusted by adjusting the pre-tightening force of the spring. Thus, even after assembly, the opening pressure of the check valve can be easily adjusted, avoiding the situation where the opening pressure does not meet the design requirements.

[0037] Please refer to Figures 1-3 A variable response time check valve device includes a valve seat 1, a plug 2, a spring 3 and a valve core adjusting assembly 4. The plug 2 is sealingly arranged at one end of the valve seat 1. The other end of the valve seat 1 is provided with an oil inlet port 5, an oil outlet port 6 and a first chamber 7. The first chamber 7 communicates with the oil inlet port 5 and the oil outlet port 6. The valve core adjusting assembly 4 is slidingly 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 adjusting assembly 4. The end of the valve core adjusting assembly 4 away from the spring 3 is arranged between the oil inlet port 5 and the oil outlet port 6. The valve core adjusting assembly 4 is used to adjust the pre-tightening force of the spring 3.

[0038] The valve core adjusting assembly 4 is arranged to slide in the first chamber 7, and the opening pressure of the one-way valve is adjusted by adjusting the pre-tightening force of the spring 3. By adjusting the position of the valve core adjusting assembly 4, the pre-tightening force 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 that communicates the oil inlet 5 and the oil outlet 6. The valve core adjusting assembly 4 can slide in the first chamber 7, and the spring 3 is arranged in the valve seat 1 and abuts against the plug 2 and the valve core adjusting assembly 4 at both ends. With this design, the opening pressure of the one-way valve can be conveniently adjusted after assembly, avoiding the situation that the opening pressure does not meet the requirements and requires rework.

[0039] To simplify the structure of the valve core member 41 and improve the flow efficiency of the liquid in the valve core member 41, in an embodiment, the valve core adjusting assembly 4 includes the valve core member 41 and an adjusting member 42, the valve core member 41 is threadedly connected with the adjusting member 42, the valve core member 41 is arranged between the oil inlet 5 and the oil outlet 6, and the adjusting member 42 abuts against the spring 3. The thread connection between the valve core member 41 and the adjusting member 42 can adopt standard metric threads or English threads, and the specific thread specification can be selected according to actual needs. The abutting part of the adjusting member 42 and the spring 3 can be designed as a flat surface contact or a curved surface contact to ensure uniform stress during adjustment. The valve core member 41 can be made of high-strength materials to improve its wear resistance and service life. The adjusting member 42 can be designed for manual adjustment or use an automatic adjustment mechanism to meet the use requirements of different occasions. Through the above design, the valve core adjusting assembly 4 can effectively solve the problem that the opening pressure does not meet the design requirements due to the fixed size of the valve core in the prior art. Specifically, by adjusting the adjusting member 42, the pre-tightening force of the spring 3 can be conveniently changed, thereby realizing precise control of the opening pressure of the valve core. Thus, the cumbersome steps of adjusting the opening pressure by adding gaskets or turning in the prior art are avoided, the production cost is reduced, the production efficiency is improved, and the reliability and stability of the hydraulic system are ensured.

[0040] To simplify the structure of the valve core 41 and improve the flow efficiency of the liquid in the valve core 41, based on this, in an embodiment, a guide column 8 is further provided on the plug 2, which is arranged along the axial direction of the one-way valve, and a guide hole 9 is provided on the adjusting piece 42, and the guide column 8 and the guide hole 9 are inserted and matched. Through the cooperation of the guide column 8 and the guide hole 9, the stability of the adjusting piece 42 in the axial direction is ensured, and the deviation of the adjusting piece 42 caused by the force of the spring 3 or the fluid pressure is avoided, so as to realize the accurate adjustment of the pre-tightening force of the spring 3, solve the deviation problem of the adjusting piece 42 in the working process, and improve 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 requirement of the one-way valve. The diameter of the guide hole 9 is slightly larger than that of the guide column 8, so as 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 and other methods to ensure their size precision and surface finish.

[0041] To simplify the structure of the valve core 41 and improve the flow efficiency of the liquid in the valve core 41, based on this, in an embodiment, the valve core 41 is provided with a second chamber 10, and an oil channel 15 is arranged between the second chamber 10 and the first chamber 7. By arranging the second chamber 10 in the valve core 41 and communicating with the first chamber 7 through the oil channel 15, the communication problem between the valve core 41 and the first chamber 7 is solved. This design can make the liquid flow in the valve core 41, thereby improving the response time and fluid control performance of the valve. The second chamber 10 can be realized in various ways, for example, a separate chamber can be machined in the valve core 41, and an oil channel 15 is opened at the appropriate position to communicate with the first chamber 7. The design of the oil channel 15 can be optimized according to actual needs to ensure smooth and effective control of liquid flow. In addition, the size and position of the oil channel 15 can also be adjusted according to the specific structure and functional requirements of the valve core 41 to achieve the best fluid control effect. By arranging the second chamber 10 in the valve core 41 and communicating with the first chamber 7 through the oil channel 15, the communication problem between the valve core 41 and the first chamber 7 can be effectively solved. This design not only simplifies the structure of the valve core 41, but also improves the flow efficiency of the liquid in the valve core 41, thereby improving the response time and fluid control performance of the valve.

[0042] In order to reduce the deformation and wear of the spring 3, avoid the stress concentration phenomenon of the spring 3 working in a narrow space, based on this, in an embodiment, a third chamber 11 is further arranged 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 that of the first chamber 7. The third chamber 11 is arranged 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 that of the first chamber 7. By arranging the third chamber 11 in the valve seat 1 and placing the spring 3 in the third chamber 11, the working environment and stress condition of the spring 3 can be optimized, and the response time and overall performance of the one-way valve can be improved. The third chamber 11 can be formed in the valve seat 1 by machining process, ensuring that it is coaxially arranged with the first chamber 7. The spring 3 can be selected according 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, which can provide more space for the spring 3 and make the stress more uniform during the working process, reduce the deformation and wear of the spring 3, and improve the service life and performance stability of the one-way valve. By arranging the third chamber 11 in the valve seat 1 and placing the spring 3 in it, the working environment of the spring 3 is optimized, and the stress condition is more reasonable, thereby improving the response time and overall performance of the one-way valve. Compared with the prior art, the structure of the application is improved, the problem of arranging the spring 3 in different chambers is solved, the stress concentration phenomenon of the spring 3 working in a narrow space is effectively avoided, and the reliability and stability of the one-way valve are improved.

[0043] In order to simplify the adjustment process of the valve core 41 and the adjusting part 42, improve production efficiency and product reliability, based on this, in an embodiment, a first angle groove 12 is arranged at one end of the valve core 41 close to the oil inlet 5. The first angle groove 12 is arranged at one end of the valve core 41 close to the oil inlet 5, which facilitates the adjustment of the plug-in length of the valve core 41 and the adjusting part 42, and further adjusts the pre-tightening force of the spring 3. The first angle groove 12 can have multiple implementation ways, for example, it can be designed with different angles and depths to adapt to different fluid control requirements. By arranging the first angle groove 12, the plug-in length of the valve core 41 can be adjusted more flexibly, so as to accurately control the pre-tightening force of the spring 3. Compared with the prior art, the application can effectively solve the problem that the opening pressure does not meet the design requirements due to the fixed size of the valve core, reduce the rework and adjustment in the production process, and improve the production efficiency and product reliability.

[0044] To make the installation of the plug 2 more secure and improve the reliability and stability of the check valve, based on this, in an embodiment, the end of the plug 2 away from the spring 3 is provided with a second angular groove 13. By setting the second angular groove 13 at the end of the plug 2 away from the spring 3, the second angular groove 13 facilitates the installation of the plug 2. The second angular groove 13 can be formed on the plug 2 by machining, specifically, turning, milling and other machining methods can be used to achieve it. The size and shape of the second angular groove 13 can be adjusted according to actual needs, for example, it can be designed as a circle, square or other geometric shape to adapt to different installation requirements. Compared with the prior art, the technical scheme 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 angular groove 13 makes the installation of the plug 2 more secure, further improving the reliability and stability of the check valve.

[0045] To prevent leakage of liquid or gas and improve the sealing performance and stability of the check valve, based on this, in an 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, ensuring that the liquid or gas will not leak from the connection during flow. By setting the sealing gasket 14 between the plug 2 and the valve seat 1, the sealing problem can be effectively solved, ensuring the working reliability and stability of the check valve. The sealing gasket 14 can be made of rubber, polytetrafluoroethylene (PTFE) and other materials, 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 a ring gasket, flat gasket or other suitable shape to adapt to different application requirements. By setting 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, preventing leakage of liquid or gas and improving the sealing performance and stability of the check valve. Compared with the prior art, the technical scheme of the present application can better ensure the working reliability of the check valve and reduce system failure or leakage problems caused by poor sealing.

[0046] In order to improve the service life and reliability of the guide shaft, based on this, in an embodiment, the guide hole 9 and the guide column 8 are clearance fit. The implementation 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, so as to ensure that there is a certain gap between the two. The gap can be fine-tuned according to the specific application requirements to achieve the best fit effect. As a preferred embodiment, the size accuracy of the guide hole 9 and the guide column 8 can be ensured by precision machining technology, so as to realize stable and reliable clearance fit. In addition, wear-resistant materials can also be used to manufacture the guide hole 9 and the guide column 8, so as to improve the service life and reliability thereof. The implementation 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, so as to ensure that there is a certain gap between the two. The gap can be fine-tuned according to the specific application requirements to achieve the best fit effect. As a preferred embodiment, the size accuracy of the guide hole 9 and the guide column 8 can be ensured by precision machining technology, so as to realize stable and reliable clearance fit. In addition, wear-resistant materials can also be used to manufacture the guide hole 9 and the guide column 8, so as to improve the service life and reliability thereof.

[0047] The above is only a preferred embodiment of the present application, not any form of limitation on the present application, although the present application has been disclosed as above with a preferred embodiment, however, not to limit the present application, any person skilled in the art, without departing from the scope of the present application technical solution, can make some changes or modifications of equivalent embodiments with the above disclosed technical content, but as long as it does not deviate from the technical solution content of the present application, according to the technical essence of the present application, any modification, equivalent change and modification of the above embodiment, all still belong to the scope of the present application technical solution.

Claims

1. A variable response time one-way valve, characterized in that: The valve seat comprises a valve seat, a plug, a spring and a valve core adjustment assembly, wherein the plug is sealingly arranged at one end of the valve seat, and the other end of the valve seat is provided with an oil inlet, an oil outlet and a first chamber, the first chamber being connected to the oil inlet and the oil outlet, the valve core adjustment assembly being slidably arranged in the first chamber, the spring being arranged in the valve seat, one end of the spring abutting against one end of the plug, and the other end of the spring abutting against the valve core adjustment assembly, an end of the valve core adjustment assembly away from the spring being arranged between the oil inlet and the oil outlet, and the valve core adjustment assembly being used to adjust the preload force of the spring; Wherein, 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; The plug is further provided with a guide post, which is arranged along the axial direction of the one-way valve. The adjusting member is provided with a guide hole, and the guide post is plugged into and matched with the guide hole. The valve core is provided with a second chamber therein, and an oil passage is provided between the second chamber and the first chamber; 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.

2. The variable response time one-way valve device according to claim 1, characterized in that: A first angle groove is provided at one end of the valve core member close to the oil inlet.

3. The variable response time one-way valve device according to claim 2, characterized in that: A second angle groove is provided at one end of the plug away from the spring.

4. 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.

5. The variable response time one-way valve device according to claim 1, characterized in that: The guide hole and the guide column are loosely matched.

Images