Air stagnation valve structure capable of preventing valve element from being clamped

Abstract

The utility model provides an air valve structure for preventing a valve core from being clamped, which comprises an air inlet pipe, a valve core control mechanism, a valve core shell, an air outlet pipe and an air guide pipe, the air inlet pipe is fixed on the upper surface of the valve core control mechanism, the valve core shell is fixed on the lower surface of the valve core control mechanism, and the air outlet pipe is fixed on the lower surface of the valve core shell. According to the valve element control mechanism, the air guide pipe is installed on the side surface of the valve element control mechanism, and the problems that after an original device is used for a long time, a valve element is likely to be abraded and blocked, consequently, the valve element is blocked in the moving process, and airflow cannot be controlled according to needs are solved. The valve element can rotate while the air valve is controlled to work, so that the valve element is subjected to uniform thermal stress, the surface of the valve element is uniformly abraded, the phenomenon of clamping stagnation in movement is avoided, and the stability of the air valve is improved.

Description

Technical Field

[0001] This utility model relates to a valve core jamming prevention structure for air valves, belonging to the technical field of locomotive brake installation exhaust valves. Background Technology

[0002] The air valve is a safety control component of a locomotive. Its main function is to quickly release air when the locomotive needs to brake, thereby enabling rapid braking and ensuring the safety of the entire locomotive system, thus guaranteeing the safe operation of the locomotive. It requires minimal operating force.

[0003] Publication number CN203876746U mentions a valve structure that uses a reset spring to reset the valve core. However, the valve core may wear out and become stuck after prolonged use, causing it to become stagnant during operation and preventing airflow from being controlled as required. There is an urgent need for a valve structure that prevents valve core stagnation to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a valve structure that prevents valve core jamming, so as to solve the problems mentioned in the background technology. This utility model designs a valve core control mechanism that enables the valve core to rotate while controlling the operation of the valve, so that the valve core is subjected to uniform thermal stress and the surface of the valve core is worn evenly, and there will be no jamming phenomenon during movement, thereby improving the stability of the valve.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a valve core anti-jamming valve structure, comprising an inlet pipe, a valve core control mechanism, a valve core housing, an outlet pipe, and a guide pipe. The inlet pipe is fixed to the upper surface of the valve core control mechanism, the valve core housing is fixed to the lower surface of the valve core control mechanism, the outlet pipe is fixed to the lower surface of the valve core housing, and a guide pipe is installed on the side surface of the valve core control mechanism. The valve core control mechanism includes a valve core control housing, a pneumatic top plate, a valve core connecting rod, a rotating guide rail, and a return spring. The system comprises a guide ring, a connecting post, inner guide posts, and a valve core. The valve core control housing is located on the upper surface of the valve core housing. A valve core connecting rod is installed inside the valve core control housing. A pneumatic top plate is installed on the upper surface of the valve core connecting rod. A connecting post is installed on the circumferential surface of the valve core connecting rod. The guide ring is located above the connecting post. Six inner guide posts are installed on the circumferential surface of the connecting post. A rotating guide rail is installed on the upper surface of the connecting post. A return spring is installed inside the rotating guide rail. The valve core is installed on the lower surface of the valve core connecting rod.

[0006] Furthermore, the lower surface dimension of the pneumatic top plate is slightly smaller than the internal dimension of the valve core control housing. The upper surface of the return spring is fixedly connected to the pneumatic top plate, and the lower surface of the return spring is fixedly connected to the inside of the rotating guide rail. A rotating groove is provided on the inner wall of the valve core control housing. The rotating guide rail is located on the upper surface of the rotating groove, and the rotating guide rail and the rotating groove are connected by ball bearings. An oil inlet is provided on the circumferential surface of the valve core housing, and the oil inlet connects the guide groove to the outside of the valve core control housing.

[0007] Furthermore, six guide grooves are formed on the circumferential surface of the guide ring, and each guide rail inner post is located inside the corresponding guide groove. The guide ring is fixedly connected to the inner wall of the valve core control housing, and the inner surface of the guide ring is in close contact with the connecting post.

[0008] Furthermore, the two ends of the air guide tube are respectively connected to the valve core control housing and the valve core housing. A vent housing is installed on the circumferential surface of the valve core. An air inlet groove is opened on the connecting surface of the vent housing and the air guide tube. An air inlet is opened at the upper end of the circumferential surface of the valve core, and an air outlet is opened at the lower end of the circumferential surface of the valve core. The air inlet and the air outlet are connected through an air passage.

[0009] Furthermore, an air cavity is provided at the upper end of the vent housing, and the air inlet is located inside the air cavity. A sealing groove is provided on the inner surface of the vent housing, and a sealing ring is installed inside the sealing groove. The sealing ring is in close contact with the surface of the valve core.

[0010] The beneficial effects of this utility model are as follows: This utility model provides an anti-valve core jamming air valve structure. Because this utility model adds a repetitive writing base, writing panel, writing pen shell, built-in writing pen, writing magnet, writing whiteboard, imaging honeycomb plate, limiting rod, and clearing slider, our design improvements and actual use have shown that this device has a reasonable structure and good practicality. The design of a valve core control mechanism enables the valve core to rotate while controlling the air valve's operation, so that the valve core is subjected to uniform thermal stress and the surface of the valve core is worn evenly, preventing jamming during movement, thereby improving the stability of the air valve. Attached Figure Description

[0011] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0012] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the anti-valve core jamming air valve of this utility model;

[0013] Figure 2 This is a cross-sectional schematic diagram of the valve core control housing and the valve core housing of the anti-valve core jamming air valve structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the connection of the valve core control mechanism of an anti-valve core jamming air valve structure according to this utility model;

[0015] Figure 4 This is a three-dimensional schematic diagram of the valve core of an anti-valve core jamming air valve according to the present invention;

[0016] In the diagram: 1-Inlet pipe, 2-Valve core control mechanism, 21-Valve core control housing, 211-Oil inlet, 22-Pressure top plate, 23-Valve core connecting rod, 24-Rotating guide rail, 25-Reset spring, 26-Guide rail ring, 261-Guide groove, 262-Rotating groove, 27-Connecting column, 28-Guide rail inner column, 29-Valve core, 291-Inlet, 292-Air passage, 293-Sealing ring, 294-Outlet, 3-Valve core housing, 31-Ventilation housing, 311-Inlet groove, 32-Air chamber, 4-Outlet pipe, 5-Guide pipe. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] Please see Figures 1-4 This utility model provides a technical solution: a valve core anti-jamming structure, including an inlet pipe 1, a valve core control mechanism 2, a valve core housing 3, an outlet pipe 4, and a guide pipe 5. The inlet pipe 1 is fixed to the upper surface of the valve core control mechanism 2, the valve core housing 3 is fixed to the lower surface of the valve core control mechanism 2, the outlet pipe 4 is fixed to the lower surface of the valve core housing 3, and the guide pipe 5 is installed on the side surface of the valve core control mechanism 2. The valve core control mechanism 2 includes a valve core control housing 21, a pneumatic top plate 22, a valve core connecting rod 23, a rotating guide rail 24, a return spring 25, a guide rail ring 26, a connecting column 27, a guide rail inner column 28, and a valve core 29. The valve core control housing 21 is located on the upper surface of the valve core housing 3. On the surface, a valve core connecting rod 23 is installed inside the valve core control housing 21. A pneumatic top plate 22 is installed on the upper surface of the valve core connecting rod 23. A connecting post 27 is installed on the circumferential surface of the valve core connecting rod 23. A guide rail ring 26 is located above the connecting post 27. Six inner guide rail posts 28 are installed on the circumferential surface of the connecting post 27. A rotating guide rail 24 is installed on the upper surface of the connecting post 27. A return spring 25 is installed inside the rotating guide rail 24. A valve core 29 is installed on the lower surface of the valve core connecting rod 23. This design solves the problem that the valve core may wear and jam after prolonged use of the original device, causing the valve core to jam during movement and making it impossible to control the airflow as required.

[0019] As the first embodiment of this utility model: the lower surface dimension of the pneumatic top plate 22 is slightly smaller than the internal dimension of the valve core control housing 21. The upper surface of the return spring 25 is fixedly connected to the pneumatic top plate 22, and the lower surface of the return spring 25 is fixedly connected to the inside of the rotating guide rail 24. A rotating groove 262 is provided on the inner wall of the valve core control housing 21. The rotating guide rail 24 is located on the upper surface of the rotating groove 262, and the rotating guide rail 24 and the rotating groove 262 are connected by ball bearings. An oil inlet 211 is provided on the circumferential surface of the valve core housing 3. The oil inlet 211 connects the guide groove 261 to the outside of the valve core control housing 21. By adding oil inlet 211, lubricating oil can be added to the inside of the guide groove 261, thereby reducing the wear of the inner column 28 of the guide rail and the guide groove 261. To improve the service life of the air valve, six guide grooves 261 are formed on the circumferential surface of the guide ring 26, and each guide inner post 28 is located inside the corresponding guide groove 261. The guide ring 26 is fixedly connected to the inner wall of the valve core control housing 21, and the inner surface of the guide ring 26 is in close contact with the connecting post 27. The two ends of the air guide pipe 5 are respectively connected to the valve core control housing 21 and the valve core housing 3. A vent housing 31 is installed on the circumferential surface of the valve core 29, and the connection surface of the vent housing 31 and the air guide pipe 5 are connected. An air inlet groove 311 is provided. An air inlet 291 is provided at the upper end of the circumferential surface of the valve core 29, and an air outlet 294 is provided at the lower end of the circumferential surface of the valve core 29. The air inlet 291 and the air outlet 294 are connected through an air passage 292. An air chamber 32 is provided at the upper end of the vent housing 31. The air inlet 291 is located inside the air chamber 32. A sealing groove is provided on the inner surface of the vent housing 31. A sealing ring 293 is installed inside the sealing groove. The sealing ring 293 is in close contact with the surface of the valve core 29.

[0020] As a second embodiment of this utility model: When the air pressure input into the intake pipe 1 inside the car is too high, the gas enters the valve core control housing 21 and the valve core 29. The high pressure will push the valve core 29 and the air pressure top plate 22 to move downward. When the air pressure top plate 22 moves downward, it will drive the connecting column 27 and the inner column 28 of the guide rail to move downward. The inner column 28 of the guide rail will be displaced in the guide groove 261, thereby driving the connecting rod, the air pressure top plate 22 and the valve core 29 to rotate. When the air pressure top plate 22 rotates, it will drive the return spring 25 and the rotating guide rail 24 to work together. The valve core 29 rotates, thus protecting the return spring 25 from pressure in the vertical direction. As the valve core 29 rotates downward, the air outlet 294 moves out of the vent housing 31, and the gas is discharged from the air outlet pipe 4 through the air outlet 294. When the air pressure is low, the return spring 25 will push up the valve core 29 and the air pressure plate 22, so that the air outlet 294 re-enters the vent housing 31. The opening area of ​​the air outlet 294 will change according to the air pressure, thereby ensuring that the pressure in the air inlet pipe 1 is always kept within a certain range.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A valve structure for preventing valve core jamming, comprising an inlet pipe, a valve core control mechanism, a valve core housing, an outlet pipe, and an air guide pipe, characterized in that: An air inlet pipe is fixed to the upper surface of the valve core control mechanism, a valve core housing is fixed to the lower surface of the valve core control mechanism, an air outlet pipe is fixed to the lower surface of the valve core housing, and an air guide pipe is installed on the side surface of the valve core control mechanism. The valve core control mechanism includes a valve core control housing, a pneumatic top plate, a valve core connecting rod, a rotating guide rail, a return spring, a guide rail ring, a connecting post, inner guide rail posts, and a valve core. The valve core control housing is located on the upper surface of the valve core housing. The valve core connecting rod is installed inside the valve core control housing. The pneumatic top plate is installed on the upper surface of the valve core connecting rod. The connecting post is installed on the circumferential surface of the valve core connecting rod. The guide rail ring is located above the connecting post. Six inner guide rail posts are installed on the circumferential surface of the connecting post. A rotating guide rail is installed on the upper surface of the connecting post. A return spring is installed inside the rotating guide rail. The valve core is installed on the lower surface of the valve core connecting rod.

2. The anti-valve core jamming valve structure according to claim 1, characterized in that: The lower surface dimension of the pneumatic top plate is slightly smaller than the internal dimension of the valve core control housing. The upper surface of the return spring is fixedly connected to the pneumatic top plate, and the lower surface of the return spring is fixedly connected to the inside of the rotating guide rail. A rotating groove is provided on the inner wall of the valve core control housing. The rotating guide rail is located on the upper surface of the rotating groove, and the rotating guide rail and the rotating groove are connected by ball bearings. An oil inlet is provided on the circumferential surface of the valve core housing, and the oil inlet connects the guide groove to the outside of the valve core control housing.

3. The anti-valve core jamming valve structure according to claim 1, characterized in that: The guide ring has six guide grooves on its circumferential surface, and each guide rail inner post is located inside the corresponding guide groove. The guide ring is fixedly connected to the inner wall of the valve core control housing, and the inner surface of the guide ring is in close contact with the connecting post.

4. The anti-valve core jamming valve structure according to claim 1, characterized in that: The two ends of the air guide tube are respectively connected to the valve core control housing and the valve core housing. A vent housing is installed on the circumferential surface of the valve core. An air inlet groove is opened on the connecting surface of the vent housing and the air guide tube. An air inlet is opened at the upper end of the circumferential surface of the valve core, and an air outlet is opened at the lower end of the circumferential surface of the valve core. The air inlet and the air outlet are connected through an air passage.

5. The anti-valve core jamming valve structure according to claim 4, characterized in that: An air chamber is provided at the upper end of the vent housing, and the air inlet is located inside the air chamber. A sealing groove is provided on the inner surface of the vent housing, and a sealing ring is installed inside the sealing groove. The sealing ring is in close contact with the surface of the valve core.

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