Pipeline exhaust valve
By setting vent holes on the exhaust valve plate and utilizing a torsion spring mechanism, the problem of insufficient gas flow when the exhaust valve is closed is solved, thus achieving stable engine operation and smooth airflow switching.
Patent Information
- Application Number
- CN202520524935.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-03-25
AI Technical Summary
When the valve plate of the existing exhaust valve is closed, the low gas flow may cause the engine to stall.
Design a pipeline exhaust valve, which uses a vent hole on the valve plate and a torsion spring to keep the valve plate closed in its natural state. When the gas flow is insufficient, the vent hole allows air to pass through. When the engine is running normally, the valve plate rotates open, achieving a smooth state switching.
This prevents engine stalling caused by excessively low gas flow, ensuring smooth airflow changes and overall operational stability.
Smart Images
Figure CN223725442U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of exhaust valve, concretely relates to a pipeline exhaust valve. BACKGROUND
[0002] The exhaust valve in the exhaust system of a vehicle is a key component for controlling exhaust emission. It is mainly used to regulate the airflow and pressure within the exhaust pipe to optimize the exhaust efficiency of the engine, reduce noise, and improve performance. By opening and closing, the exhaust valve ensures the best exhaust effect at different engine speeds, thereby improving power output and fuel economy. At the same time, it can effectively reduce the noise caused by exhaust pulses and improve driving comfort. Some high-performance vehicles are also equipped with variable exhaust valves, which can further enhance engine performance by changing the exhaust path or back pressure, especially at high speeds. In addition, the exhaust valve also plays an important role in controlling exhaust emission, helping vehicles meet environmental standards. Its design and materials need to have the characteristics of high temperature resistance and corrosion resistance to ensure long-term stable operation in harsh environments.
[0003] The main structure of the exhaust valve includes a valve body, a valve stem rotatably connected to the valve body, and a valve plate connected to the valve stem. The opening degree of the valve plate relative to the valve body is adjusted by rotating the valve stem. However, when the valve plate of the exhaust valve controls the valve body in a closed state, the gas flow passing through the exhaust system is very low, which may cause the engine to stall. SUMMARY
[0004] The purpose of the utility model is to solve the problem that the valve plate of the exhaust valve in the prior art controls the valve body in a closed state, the gas flow passing through the exhaust system is very low, and the engine may stall.
[0005] To solve the above problems, the utility model provides a pipeline exhaust valve, which comprises a tubular valve body, a valve stem rotatably connected to the valve body, the valve stem comprising a receiving section located inside the valve body and an adjusting section located outside the valve body, the receiving section being eccentrically arranged relative to the valve body and perpendicular to the axis of the valve body, the receiving section being connected with a valve plate, the valve plate being provided with a gas-permeable through hole; the valve body is externally provided with a housing extending to the adjusting section, the adjusting section being located inside the housing, and the housing being provided with a torsional spring, the torsional spring acting on the adjusting section to maintain the valve body in a closed state under natural conditions.
[0006] Compared with the prior art, the above scheme sets a gas permeable hole in the valve plate, and the valve rod is under the action of the torsional spring in the natural state, so that the valve plate maintains the valve body in the closed state, at this time the gas permeable hole can play the function of gas flow, preventing the problem of engine flameout caused by too low gas flow through the exhaust system; when the engine is running normally, the gas flow of the exhaust system increases, the gas in the valve body pushes the valve plate to rotate, that is, the valve body becomes open, at this time the gas in the exhaust system can flow out quickly, so that the change of gas flow is more smooth when the valve body switches between closed and open states, and the gas flow will not have a large step change, and the overall operation is more stable.
[0007] In an improved scheme, the shell is tubular, one end of the shell away from the valve body is provided with a main chuck, one end of the adjusting section away from the valve body is provided with a secondary chuck, the secondary chuck is located on the side of the main chuck away from the valve body, one end of the torsional spring is connected to the main chuck and the other end is connected to the secondary chuck, so that the torsional spring exerts an elastic force between the main chuck and the secondary chuck, the structure is stable and easy to assemble.
[0008] In an improved scheme, it further includes a cylindrical cover, one end of the cover is closed and the other end is provided with an opening, the cover covers the secondary chuck and the torsional spring, and the opening of the cover is clamped to the main chuck, so that the torsional spring and part of the shell are covered and protected by the cover, preventing impurities from entering and affecting the normal operation of the torsional spring.
[0009] In an improved scheme, the lower part of the cover is provided with a water permeable hole, so that the condensed water in the shell can be discharged from the water permeable hole, avoiding corrosion of the torsional spring or the valve rod
[0010] In an improved scheme, the outer periphery of the main chuck is provided with a plurality of clamping teeth distributed in the circumferential direction, the opening end of the cover is provided with a clamping groove corresponding to each clamping tooth, and the clamping tooth is clamped to the corresponding clamping groove, so as to realize the structural stability of the cover relative to the shell.
[0011] In an improved scheme, the receiving section of the valve rod is located at the upper part of the valve body, the upper part of the valve plate is connected to the valve rod and the lower part is provided with a counterweight, so as to compensate the torque required by the valve plate to open the valve body through the counterweight.
[0012] In an improved scheme, the valve body and the valve rod are rotationally connected through a bearing, and the bearing is formed by pressing a steel wire, so as to ensure the stability of the rotational connection of the valve rod relative to the valve body.
[0013] In an improved scheme, the counterweight is located on the side of the valve plate facing the outlet of the valve body, so that the thrust of the gas on the valve plate is more uniform and stable.
[0014] In an improved scheme, the gas permeable through hole is located in the middle of the valve plate, thereby facilitating the gas to pass through. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 Overall schematic of a pipe vent valve Figure One ;
[0016] Figure 2 Overall schematic of a pipe vent valve Figure Two ;
[0017] Figure 3 Overall schematic of a pipe vent valve Figure Three (with the cover removed);
[0018] Figure 4 Front view schematic of a pipe vent valve
[0019] Figure 5 Sectional view along the A-A section line Figure 4 of the pipe vent valve.
[0020] BRIEF DESCRIPTION OF DRAWINGS
[0021] 1. valve body; 2. valve stem; 21. receiving section; 22. adjusting section; 23. sub-chuck; 3. valve plate; 31. gas permeable through hole; 32. counterweight; 4. housing; 41. main chuck; 42. clamping tooth; 5. torsion spring; 6. cover; 61. water permeable hole; 62. clamping slot. DETAILED DESCRIPTION
[0022] It should be understood by those skilled in the art that the following embodiments are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments as needed in order to adapt to specific application occasions.
[0023] In the description of the following embodiments, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0024] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature can be "above", "over" and "on" the second feature, which can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature can be "under", "below" and "under" the second feature, which can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.
[0025] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0026] Please refer to Figures 1-5 The embodiment of the utility model provides a pipeline exhaust valve, including tubular valve body 1 still include valve rod 2 that rotates to valve body 1, valve rod 2 includes the receiving section 21 in valve body 1 and the adjusting section 22 located outside valve body 1, receiving section 21 eccentricity sets up with valve body 1 and is perpendicular to the axis of valve body 1, receiving section 21 is connected with valve plate 3, and valve plate 3 is equipped with breathable through hole 31;Valve body 1 outside is equipped with the shell 4 that extends to adjusting section 22, adjusting section 22 is located in shell 4, and shell 4 is equipped with torsion spring 5, and torsion spring 5 acts on adjusting section 22 to make valve plate 3 maintain valve body 1 in closed state under natural state.
[0027] The above scheme is through the breathable through hole 31 of valve plate 3, and valve rod 2 makes valve plate 3 maintain valve body 1 in closed state under the action of torsion spring 5 in natural state, at this time, breathable through hole 31 can play the function of gas flow, prevent the problem that the gas flow of exhaust system is too low and causes engine to die;When the engine normally runs, the gas flow of exhaust system increases, and the gas in valve body 1 pushes valve plate 3 to make valve rod 2 rotate, that is, valve body 1 becomes open state, at this time, the gas of exhaust system can flow out quickly, so that the change of gas flow is more smooth when valve body 1 switches between closed and open state, and the overall operation is more stable.
[0028] For a clearer illustration, the drawings will be described in conjunction with Figure 1 And Figure 4As shown, in the embodiment, the axis of the valve body 1 is along the front-rear direction, the valve stem 2 is arranged at the upper portion of the valve body 1 along the left-right direction, and the upper left and right portions of the valve body 1 are each provided with a mounting hole for the rotational connection of the valve stem 2, and the mounting hole is provided with a bearing for the rotational cooperation of the valve stem 2, so that the rotational connection between the valve body 1 and the valve stem 2 is realized through the bearing; the bearing is formed by pressing a steel wire, thereby ensuring the stability of the rotational connection of the valve stem relative to the valve body. The shell 4 is tubular and axially collinear with the axis of the valve stem 2, and the end of the shell 4 away from the valve body 1 is provided with a main chuck 41, the end of the adjusting section 22 away from the valve body 1 is provided with a secondary chuck 23, the secondary chuck 23 is located on the side of the main chuck 41 away from the valve body 1, one end of the torsion spring 5 is connected to the main chuck 41 and the other end is connected to the secondary chuck 23, so that the torsion spring 5 exerts an elastic force between the main chuck 41 and the secondary chuck 23, and the structure is stable and easy to assemble.
[0029] Further, the embodiment further includes a cylindrical cover 6, one end of the cover 6 is closed and the other end is provided with an opening, the cover 6 covers the secondary chuck 23 and the torsion spring 5, and the opening of the cover 6 is clamped to the main chuck 41, so that the cover 6 covers and protects the torsion spring 5 and part of the shell 4, thereby preventing impurities from entering and affecting the normal operation of the torsion spring 5.
[0030] The lower portion of the cover 6 can be provided with a water-permeable hole 61 penetrating vertically, so that the condensed water in the shell 4 can be discharged from the water-permeable hole 61, thereby avoiding corrosion of the torsion spring 5 or the valve stem 2
[0031] In the embodiment, the outer periphery of the main chuck 41 is provided with a plurality of circumferentially distributed clamping teeth 42, the open end of the cover 6 is provided with a clamping groove 62 corresponding to each clamping tooth 42, and the clamping tooth 42 is clamped to the corresponding clamping groove 62, thereby realizing the structural stability of the cover 6 relative to the shell 4. Of course, the main chuck 41 and the cover 6 can be further fixed by welding.
[0032] In the embodiment, the receiving section 21 of the valve stem 2 is located at the upper portion of the valve body 1, the upper portion of the valve plate 3 is connected to the valve stem 2 and the lower portion is provided with a counterweight 32, so that the torque required for the valve plate 3 to open the valve body 1 is compensated by the counterweight 32.
[0033] In the embodiment, the counterweight 32 is located on the side of the valve plate 3 facing the outlet of the valve body 1, so that the thrust exerted by the gas on the valve plate 3 is more uniform and stable.
[0034] In the embodiment, the air-permeable through hole 31 is located in the middle portion of the valve plate 3, thereby facilitating the passage of gas.
[0035] It should be noted that in the description of the present application, the terms of direction or position relationship indicated by "inner", "outer" and the like are based on the direction or position relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the device or member must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application; all directional indications (such as up, down, left, right, front, back, inner, outer) are only used to explain the relative positional relationship, movement condition and the like between components in a certain specific posture, and if the specific posture changes, the directional indications will also change accordingly.
[0036] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "in this embodiment", "specific examples" or "some examples" and the like means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.
[0037] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A pipe vent valve comprising a tubular valve body (1), characterized in that, Also included is a valve stem (2) rotationally connected to the valve body (1), the valve stem (2) including a receiving section (21) located inside the valve body (1) and an adjusting section (22) located outside the valve body (1), the receiving section (21) being eccentrically arranged relative to the valve body (1) and perpendicular to the axis of the valve body (1), the receiving section (21) being connected with a valve plate (3), the valve plate (3) being provided with a gas-permeable through hole (31); the valve body (1) is externally provided with a housing (4) extending to the adjusting section (22), the adjusting section (22) being located inside the housing (4), and the housing (4) is provided with a torsion spring (5), the torsion spring (5) acting on the adjusting section (22) so that the valve plate (3) maintains the valve body (1) in a closed state in a natural state.
2. The pipe vent valve of claim 1, wherein, The housing (4) is tubular, one end of the housing (4) away from the valve body (1) is provided with a main chuck (41), one end of the adjusting section (22) away from the valve body (1) is provided with a secondary chuck (23), the secondary chuck (23) is located on the side of the main chuck (41) away from the valve body (1), one end of the torsion spring (5) is connected to the main chuck (41) and the other end is connected to the secondary chuck (23).
3. The pipe vent valve of claim 2, wherein, Also included is a cylindrical cover (6), one end of the cover (6) is closed and the other end is provided with an opening, the cover (6) covers the secondary chuck (23) and the torsion spring (5), and the opening of the cover (6) is clamped to the main chuck (41).
4. The pipe vent valve of claim 3, wherein, The lower part of the cover (6) is provided with a water-permeable hole (61).
5. The pipe vent valve of claim 3, wherein, The outer peripheral side of the main chuck (41) is provided with a plurality of clamping teeth (42) distributed in the circumferential direction, the open end of the cover (6) is provided with a clamping groove (62) corresponding to each clamping tooth (42), and the clamping tooth (42) is clamped to the corresponding clamping groove (62).
6. The pipe vent valve of claim 1, wherein, The receiving section (21) of the valve stem (2) is located at the upper part of the valve body (1), the upper part of the valve plate (3) is connected to the valve stem (2) and the lower part is provided with a counterweight (32).
7. The pipe vent valve of claim 6, wherein, The counterweight (32) is located on the side of the valve plate (3) facing the outlet of the valve body (1).
8. The pipe vent valve of claim 1 or 6, wherein, The valve body (1) and the valve stem (2) are rotationally connected by a bearing, and the bearing is formed by pressing a steel wire.
9. The pipe vent valve of claim 1, wherein, The gas-permeable through hole (31) is located in the middle part of the valve plate (3).