Check valve for automotive piping systems

Abstract

This application discloses a one-way valve for automotive piping systems, relating to the field of one-way valve technology. The application includes a valve housing with an annular groove in its inner middle section. An abutment ring is fixedly connected inside the valve housing. A mounting platform is fixedly connected inside the valve housing, and a compression groove is formed inside the mounting platform. An elastic airbag is fixedly connected inside the compression groove. A T-shaped slide rod is fixedly connected to one end of the elastic airbag. An insertion hole adapted to the T-shaped slide rod is formed at one end of the mounting platform. One end of the T-shaped slide rod passes through the insertion hole and is fixedly connected to a valve plug adapted to the abutment ring. This application utilizes the elastic airbag and internal gas pressure to assist a spring in pushing the valve plug against the abutment ring, thereby creating contact. Simultaneously, the elasticity of the airbag absorbs some of the impact and vibration experienced by the valve housing, mitigating sealing problems caused by vibration. Furthermore, when the spring experiences metal fatigue, the elastic airbag can serve as a backup mechanism to ensure the system continues to operate normally, effectively improving the reliability of the device.

Description

Technical Field

[0001] This application relates to the field of check valve technology, and in particular to check valves for automotive piping systems. Background Technology

[0002] In the modern automotive industry, various piping systems are widely used in critical areas such as fuel supply, braking, cooling systems, and exhaust gas recirculation (EGR). These systems have stringent requirements for the direction and stability of fluid flow; any backflow or pressure fluctuation can lead to performance degradation or even serious malfunctions. To ensure fluid flows in the intended direction, check valves are indispensable components in these piping systems. The main function of a check valve is to allow fluid to flow in one direction while preventing reverse flow, thereby ensuring the safety and reliability of the system. With the continuous development of automotive technology, the performance requirements for check valves are also increasing, especially in terms of durability, response speed, and environmental adaptability.

[0003] Currently, the most commonly used check valves in automotive piping systems are spring-loaded check valves. Their working principle relies on the spring force to keep the valve closed. When the inlet pressure is greater than the sum of the outlet pressure and the spring preload, the valve opens, allowing fluid to flow; when the inlet pressure is less than or equal to the sum of the outlet pressure and the spring preload, the valve closes, preventing backflow. This design is simple, inexpensive, and highly reliable, and therefore widely used in the automotive industry.

[0004] Although spring-loaded check valves are widely used in automotive piping systems, after long-term use, the springs are prone to fatigue and loss of elasticity, leading to a decrease in valve sealing performance or even complete failure, thereby reducing valve reliability. Utility Model Content

[0005] The purpose of this application is to address the problem that after long-term use, the spring of a spring-loaded check valve is prone to fatigue and loss of elasticity, which leads to a decrease in the valve's sealing performance or even complete failure, thereby reducing the valve's reliability. This application provides a check valve for automotive piping systems.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution: A one-way valve for automotive piping systems includes a valve housing. An annular groove is formed in the middle section of the valve housing, and an abutment ring is fixedly connected inside the valve housing. A mounting platform is fixedly connected inside the valve housing, and a compression groove is formed inside the mounting platform. An elastic air bladder is fixedly connected inside the compression groove. A T-shaped slide rod is fixedly connected to one end of the elastic air bladder. A socket adapted to the T-shaped slide rod is formed at one end of the mounting platform. One end of the T-shaped slide rod passes through the socket and is fixedly connected to a valve plug adapted to the abutment ring. A spring is sleeved on one end of the T-shaped slide rod and installed between the mounting platform and the valve plug. A guide assembly is installed at one end of the mounting platform, and a monitoring assembly is installed at one end of the valve housing.

[0007] By adopting the above technical solution, and by setting up the cooperation of the elastic airbag with the T-shaped slide bar, valve plug and spring, it is convenient to use the elastic airbag and the internal gas pressure to assist the spring in pushing the valve plug to form contact with the contact ring. At the same time, the elastic characteristics of the elastic airbag absorb some of the impact and vibration of the valve shell, reduce the sealing problem of the valve plug caused by vibration, and when the spring experiences metal fatigue, the elastic airbag can be used as a backup mechanism to ensure that the system can still operate normally, effectively improving the reliability of the device.

[0008] Furthermore, the guiding component includes guide grooves symmetrically formed inside the socket, and one end of the valve plug is symmetrically and fixedly connected to a guide slider adapted to the socket.

[0009] By adopting the above technical solution, and by setting up the guide groove and guide slider in combination, it is convenient to push the valve plug along the length direction of the guide groove when the valve plug is pushed out by the spring and elastic airbag, thereby effectively improving the movement stability of the valve plug.

[0010] Furthermore, the monitoring component includes a flow sensor fixedly connected inside the valve housing, a pressure sensor fixedly connected to one end of the T-shaped slide bar, the pressure sensor being installed inside the elastic air bladder, and a controller electrically connected to the flow sensor and pressure sensor fixedly connected to the outside of the valve housing.

[0011] By adopting the above technical solution and using the combination of flow sensor and pressure sensor, it is convenient to monitor the fluid flow rate inside the valve body and the air pressure inside the elastic air bladder in real time, which effectively improves the practicality of the device.

[0012] Furthermore, multiple warning lights are uniformly fixedly connected to one end of the valve housing, and a remote signal transmission device is installed inside the controller.

[0013] By adopting the above technical solution and using the warning light in conjunction with the remote signal transmission device, when the controller receives abnormal monitoring signals from the flow sensor and pressure sensor, it can simultaneously alert the staff to the location of the abnormal valve body through the warning light and send a warning signal to the monitoring terminal through the remote signal transmission device.

[0014] Furthermore, a rubber sealing ring is fixedly connected to one end of the contact ring, and one end of the valve plug abuts against the rubber sealing ring.

[0015] By adopting the above technical solution, and by setting up the rubber sealing ring to work in conjunction with the valve plug and the contact ring, the sealing effect between the contact ring and the valve plug is effectively improved.

[0016] Furthermore, one end of the valve plug is fixedly connected to a bellows sleeve, one end of the bellows sleeve is fixedly connected to the mounting platform, and the spring is installed inside the bellows sleeve.

[0017] By adopting the above technical solution, and by setting the corrugated sleeve and the spring to work together, the corrugated sleeve can extend or contract with the spring and wrap around the spring, thereby effectively reducing the spring from fluid erosion and extending the spring's service life.

[0018] Furthermore, one end of the mounting platform is evenly provided with multiple through holes that communicate with the compression groove.

[0019] By adopting the above technical solution, and by using the through hole in conjunction with the corrugated sleeve, the gas inside the corrugated sleeve can pass through the through hole and be forced into the compression groove when the corrugated sleeve is pushed to contract, thereby reducing the deformation of the corrugated sleeve caused by air pressure and improving the practicality of the device.

[0020] Furthermore, a filter screen is fixedly connected inside the valve housing.

[0021] By adopting the above technical solution, and by setting up a filter screen in conjunction with the valve body, it is easy to intercept and filter the fluid passing through the inside of the valve body, so as to reduce the foreign objects in the fluid from entering the inside of the valve body, causing blockage, and affecting the sealing performance between the valve plug and the contact ring.

[0022] In summary, this application includes at least one of the following beneficial effects: 1. By using an elastic airbag in conjunction with a T-shaped slide bar, valve plug, and spring, the elastic airbag and its internal gas pressure assist the spring in pushing the valve plug against the contact ring. At the same time, the elastic characteristics of the elastic airbag absorb some of the impact and vibration on the valve body, reducing the sealing problem caused by vibration of the valve plug. In the event of metal fatigue of the spring, the elastic airbag can be used as a backup mechanism to ensure that the system can still operate normally, effectively improving the reliability of the device.

[0023] 2. By using a corrugated sleeve in conjunction with the spring, the corrugated sleeve can extend or retract with the spring, forming a wrap around the spring, thereby effectively reducing the spring from fluid erosion and extending the spring's service life. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the main body of the device in this application.

[0025] Figure 2 This is an exploded view of the internal structure of the main body of the device in this application.

[0026] Figure 3 This is an exploded view of the front internal structure of the main body of the device in this application.

[0027] Explanation of reference numerals in the attached figures: 1. Valve housing; 2. Annular groove; 3. Abutment ring; 4. Mounting platform; 5. Compression groove; 6. Elastic air bladder; 7. T-shaped slide bar; 8. Insertion hole; 9. Valve plug; 10. Spring; 11. Guide slide groove; 12. Guide slider; 13. Flow sensor; 14. Pressure sensor; 15. Controller; 16. Warning light; 17. Rubber sealing ring; 18. Corrugated sleeve; 19. Through hole; 20. Filter screen. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1 —3 provides further detailed description of this application.

[0029] This application discloses a one-way valve for automotive piping systems.

[0030] Reference Figure 1 - Figure 3 A one-way valve for a vehicle piping system includes a valve body 1. An annular groove 2 is provided in the middle section of the valve body 1, and an abutment ring 3 is fixedly connected inside the valve body 1. A mounting platform 4 is fixedly connected inside the valve body 1. A compression groove 5 is provided inside the mounting platform 4. An elastic airbag 6 is fixedly connected inside the compression groove 5. A T-shaped slide rod 7 is fixedly connected to one end of the elastic airbag 6. An insertion hole 8 adapted to the T-shaped slide rod 7 is provided at one end of the mounting platform 4. One end of the T-shaped slide rod 7 passes through the insertion hole 8 and is fixedly connected to a valve plug 9 adapted to the abutment ring 3. A spring 10 is sleeved on one end of the T-shaped slide rod 7. The spring 10 is installed between the mounting platform 4 and the valve plug 9. A guide component is installed at one end of the mounting platform 4, and a monitoring component is installed at one end of the valve body 1. The guide component includes guide grooves 11 symmetrically opened inside the socket 8, and guide sliders 12 adapted to the socket 8 are symmetrically fixedly connected to one end of the valve plug 9. Furthermore, the monitoring components include a flow sensor 13 fixedly connected inside the valve housing 1, a pressure sensor 14 fixedly connected to one end of the T-shaped slide bar 7, the pressure sensor 14 being installed inside the elastic air bladder 6, and a controller 15 fixedly connected to the outside of the valve housing 1 and electrically connected to the flow sensor 13 and the pressure sensor 14. Furthermore, multiple warning lights 16 are evenly fixedly connected to one end of the valve body 1, and a remote signal transmission device is installed inside the controller 15.

[0031] In use, firstly, when the fluid pressure inside the valve housing 1 is greater than the preload of the spring 10, the fluid pushes the valve plug 9 away from the contact ring 3 and into the annular groove 2. Then, it passes through the valve housing 1. Simultaneously, as the fluid pushes the valve plug 9 away from the contact ring 3, the valve plug 9 pushes the T-shaped slide rod 7, causing the guide slider 12 to slide along the guide groove 11 into the compression groove 5. This causes one end of the T-shaped slide rod 7 to compress the spring 10, resulting in a contraction deformation. Simultaneously, the other end of the T-shaped slide rod 7 pushes the elastic air bladder 6, causing it to contract. At this time, the gas pressure inside the elastic air bladder 6 increases. Then, when the fluid pressure is lower than the preload of the spring 10, the elastic air bladder 6... The gas inside the bladder 6 expands and, in conjunction with the spring 10, pushes the T-shaped slide bar 7 to drive the guide slider 12 to slide in the opposite direction along the length of the guide groove 11. At the same time, it pushes the valve plug 9 to form an abutment with one end of the contact ring 3, thereby sealing the internal channel of the valve body 1. This allows the elastic bladder 6 and the internal gas pressure to assist the spring 10 in pushing the valve plug 9 to form an abutment with the contact ring 3. Meanwhile, the elasticity of the elastic bladder 6 absorbs some of the impact and vibration on the valve body 1, reducing the sealing problem of the valve plug 9 caused by vibration. When the spring 10 experiences metal fatigue, the elastic bladder 6 can be used as a backup mechanism to ensure that the system can still operate normally, effectively improving the reliability of the device. Simultaneously, flow sensor 13 and pressure sensor 14 are set to monitor the flow rate inside valve body 1 and the air pressure inside elastic airbag 6 in real time. When the flow rate data inside valve body 1 and the air pressure data inside elastic airbag 6 exceed the preset value range, the abnormal monitoring data of flow sensor 13 and pressure sensor 14 are transmitted to the control terminal through remote transmission device via controller 15, and the warning light 16 is lit to help the staff quickly determine the abnormal location, thus improving the practicality of the device.

[0032] Reference Figure 2 and Figure 3 One end of the contact ring 3 is fixedly connected to a rubber sealing ring 17, and one end of the valve plug 9 abuts against the rubber sealing ring 17.

[0033] When in use, when the drive valve plug 9 comes into contact with the abutment ring 3 and forms a seal inside the valve housing 1, the valve plug 9 and the rubber sealing ring 17 form a flexible contact, and the rubber sealing ring 17 is squeezed and deformed. By utilizing the deformation characteristics of the rubber sealing ring 17, the rubber sealing ring 17 fills the space between the valve plug 9 and the abutment ring 3, thereby effectively improving the sealing effect between the valve plug 9 and the abutment ring 3 and improving the sealing performance of the device.

[0034] Reference Figure 2 and Figure 3 One end of the valve plug 9 is fixedly connected to a bellows sleeve 18, and one end of the bellows sleeve 18 is fixedly connected to the mounting platform 4. The spring 10 is installed inside the bellows sleeve 18. Among them, one end of the mounting platform 4 is evenly provided with multiple through holes 19 that communicate with the compression groove 5.

[0035] When in use, when the valve plug 9 is pushed to drive the T-shaped slide rod 7 into the interior of the elastic air bag 6, one end of the valve plug 9 squeezes the bellows sleeve 18 to produce a contraction deformation. At the same time, the air inside the bellows sleeve 18 passes through the through hole 19 into the interior of the compression groove 5. Meanwhile, the bellows sleeve 18 wraps around the spring 10 to reduce the erosion of the spring 10 by the fluid passing through the valve body 1, thus extending the service life of the spring 10.

[0036] Reference Figure 2 and Figure 3 A filter screen 20 is fixedly connected inside the valve body 1.

[0037] During use, the filter screen 20 is set to intercept and filter the fluid passing through the valve body 1, so as to reduce the foreign objects in the fluid from entering the valve body 1 and causing blockage inside the valve body 1, which would affect the sealing performance of the valve body 1.

[0038] The implementation principle of the one-way valve in the vehicle piping system of this embodiment is as follows: First, when the fluid pressure inside the valve housing 1 is greater than the preload of the spring 10, the fluid pushes the valve plug 9 away from the contact ring 3 and enters the annular groove 2. At the same time, the filter screen 20 is set to intercept and filter the fluid passing through the valve housing 1. Then, when the fluid pushes the valve plug 9 away from the contact ring 3, the valve plug 9 pushes the T-shaped slide rod 7 to drive the guide slider 12 to slide along the guide direction of the guide groove 11 into the compression groove 5. This causes one end of the T-shaped slide rod 7 to compress the spring 10 and generate a contraction deformation. At the same time, the other end of the T-shaped slide rod 7 pushes the elastic airbag 6 to generate a contraction deformation. At this time, the gas pressure inside the elastic airbag 6 increases. Then, when the fluid pressure is lower than the preload of the spring 10, the gas inside the elastic airbag 6 expands and, in conjunction with the spring 10, pushes the T-shaped slide bar 7 to drive the guide slider 12 to slide in the opposite direction along the length of the guide groove 11. At the same time, it pushes the valve plug 9 to form an abutment with one end of the contact ring 3, thereby sealing the internal channel of the valve body 1. The elastic airbag 6 and the internal gas pressure assist the spring 10 in pushing the valve plug 9 to form an abutment with the contact ring 3. At the same time, the elastic characteristics of the elastic airbag 6 absorb some of the impact and vibration of the valve body 1, reducing the sealing problem of the valve plug 9 caused by vibration. When the spring 10 experiences metal fatigue, the elastic airbag 6 can be used as a backup mechanism to ensure that the system can still operate normally. At the same time, when the valve plug 9 is pushed to drive the T-shaped slide rod 7 into the interior of the elastic air bag 6, one end of the valve plug 9 is squeezed to produce a contraction deformation of the bellows sleeve 18. At the same time, the air inside the bellows sleeve 18 passes through the through hole 19 and enters the interior of the compression groove 5. Meanwhile, the bellows sleeve 18 wraps around the outside of the spring 10 to reduce the erosion of the spring 10 by the fluid passing through the inside of the valve body 1.

Claims

1. A one-way valve for automotive piping systems, comprising a valve body (1), characterized in that: The valve housing (1) has an annular groove (2) in the middle section, and an abutment ring (3) is fixedly connected inside the valve housing (1). The valve housing (1) has a mounting platform (4) fixedly connected inside, and a compression groove (5) is opened inside the mounting platform (4). An elastic airbag (6) is fixedly connected inside the compression groove (5). A T-shaped slide rod (7) is fixedly connected to one end of the elastic airbag (6). An insertion hole (8) adapted to the T-shaped slide rod (7) is opened at one end of the mounting platform (4). One end of the T-shaped slide rod (7) passes through the insertion hole (8) and is fixedly connected to a valve plug (9) adapted to the abutment ring (3). A spring (10) is sleeved on one end of the T-shaped slide rod (7). The spring (10) is installed between the mounting platform (4) and the valve plug (9). A guide component is installed at one end of the mounting platform (4), and a monitoring component is installed at one end of the valve housing (1).

2. The one-way valve for automotive piping systems according to claim 1, characterized in that: The guide assembly includes guide grooves (11) symmetrically opened inside the socket (8), and one end of the valve plug (9) is symmetrically fixedly connected to a guide slider (12) adapted to the socket (8).

3. The one-way valve for automotive piping systems according to claim 1, characterized in that: The monitoring component includes a flow sensor (13) fixedly connected inside the valve housing (1), a pressure sensor (14) fixedly connected to one end of the T-shaped slide bar (7), the pressure sensor (14) being installed inside the elastic air bladder (6), and a controller (15) electrically connected to the flow sensor (13) and the pressure sensor (14) fixedly connected to the outside of the valve housing (1).

4. The one-way valve for automotive piping systems according to claim 3, characterized in that: Multiple warning lights (16) are uniformly fixedly connected to one end of the valve body (1), and a remote signal transmission device is installed inside the controller (15).

5. The one-way valve for automotive piping systems according to claim 1, characterized in that: One end of the contact ring (3) is fixedly connected to a rubber sealing ring (17), and one end of the valve plug (9) abuts against the rubber sealing ring (17).

6. The one-way valve for automotive piping systems according to claim 1, characterized in that: One end of the valve plug (9) is fixedly connected to a bellows sleeve (18), and one end of the bellows sleeve (18) is fixedly connected to the mounting platform (4). The spring (10) is installed inside the bellows sleeve (18).

7. The one-way valve for automotive piping systems according to claim 1, characterized in that: The mounting platform (4) has a plurality of through holes (19) that are uniformly opened at one end and communicate with the compression groove (5).

8. The one-way valve for automotive piping systems according to claim 1, characterized in that: A filter screen (20) is fixedly connected inside the valve body (1).

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