Exhaust valve stable in operation

Abstract

The utility model relates to an exhaust valve stable in operation, which comprises a driving mechanism, a valve plate and a valve body, a flow channel is arranged in the valve body, a left blocking part and a right blocking part are respectively arranged on two sides in the valve body, the left blocking part and the right blocking part are arranged in a staggered manner, and an accommodating space for accommodating the valve plate is arranged between the left blocking part and the right blocking part. The driving mechanism drives the valve plate to rotate, the valve plate is located in the containing space, the valve plate has a full-open state and a full-closed state, in the full-open state, the valve plate is parallel to the flow channel, the top and the bottom of the valve plate abut against the left blocking part and the right blocking part, and the flow channel is opened; in the fully-closed state, the valve piece is perpendicular to the flow channel, and the two sides of the valve piece abut against the left blocking part and the right blocking part respectively.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of exhaust valves, specifically a kind of exhaust valve of stable operation. BACKGROUND

[0002] In the technical field of automobile exhaust system, especially in the adjustable valve exhaust system of performance modification, single-opening exhaust valve is widely used due to its simple structure and controllable cost. By setting a valve disc driven by an actuator in the exhaust pipeline, the valve disc blocks the bypass pipeline in the closed position to achieve quiet mode, and makes the exhaust gas straight through in the open position to produce a pulsating sound, thereby meeting the needs of different driving experiences of users.

[0003] However, the existing single-opening exhaust valve structure commonly used gradually exposes two inherent defects related to each other in practice. First, the sealing performance is poor. The sealing mechanism usually only relies on the compression contact between the metal valve disc and the plane or conical surface of the inner wall of the valve body. After long-term heat cycle impact of high-temperature exhaust gas, the valve body and the valve disc are prone to slight thermal deformation. At the same time, the wear of the driving connecting rod also destroys the perfect centering of the sealing surface, ultimately leading to high-pressure exhaust gas leakage from the gap in the closed state of the valve, producing a "sizzle" sound that seriously interferes with the expected quiet effect. Second, and more importantly, the abnormal noise caused by the shaking of the valve disc. Since the valve disc needs to be connected by a rotating shaft for rotation, in order to ensure the flexibility of rotation, there must be an assembly gap between the rotating shaft and the shaft hole. When the pulsating gas flow from the engine hits the valve disc, the gap will cause uncontrollable radial shaking and circumferential swinging of the valve disc, and continuously hit the inner wall of the shaft hole, producing a clear "taptap" metal impact noise. This abnormal noise is mixed with the exhaust sound, significantly reducing the sound quality and driving experience, and affecting the reliability and high-end feel of the product. SUMMARY

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an exhaust valve with stable operation.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a driving mechanism, a valve disc and a valve body are included. A flow passage is provided in the valve body. Left and right blocking parts are respectively provided on both sides of the valve body, and the left and right blocking parts are arranged alternately. A containing space for accommodating the valve disc is provided between the left and right blocking parts. The driving mechanism drives the valve disc to rotate, and the valve disc is located in the containing space. The valve disc has a fully open state and a fully closed state. In the fully open state, the valve disc is parallel to the flow passage, the top and bottom of the valve disc abut against the left and right blocking parts, and the flow passage is open. In the fully closed state, the valve disc is perpendicular to the flow passage, and the two sides of the valve disc abut against the left and right blocking parts.

[0006] By adopting the technical scheme, the driving mechanism drives the valve disc to rotate in the containing space in the valve body, the valve disc is parallel to the flow channel in the full opening state, the top and bottom of the valve disc abut against the left blocking part and the right blocking part, the flow channel is completely opened, the valve disc is perpendicular to the flow channel in the full closing state, the two sides of the valve disc abut against the left blocking part and the right blocking part respectively, and the flow channel is blocked, the left blocking part and the right blocking part are staggered, the valve disc abuts against the blocking part stably in the full opening and full closing states, the radial swing and the circumferential swing of the valve disc are effectively limited, and the abnormal sound caused by airflow impact is reduced, meanwhile, the multi-point and multi-direction contact mode enhances the sealing property, the problem of exhaust leakage after high-temperature thermal deformation is avoided, and the operation stability and reliability of the exhaust valve are improved.

[0007] The utility model further sets up: still include valve rod, be provided with the through hole that valve rod passes through in valve body, be provided with the piece through slot that valve disc passes through in valve rod and constitute the synchronous rotation of valve rod and valve disc.

[0008] By adopting the technical scheme, the valve rod passes through the through hole of the valve body, the valve disc is inserted into the piece through slot of the valve rod, the driving mechanism drives the valve disc to rotate synchronously by rotating the valve rod, the switching of the valve disc between the full opening and the full closing is realized, the valve rod and the valve disc are rigidly connected through the piece through slot, the transmission synchronization and the precision are ensured, the problem of the sealing surface misalignment caused by the wear of the connecting rod is reduced, meanwhile, the guiding effect of the valve rod further restricts the motion track of the valve disc, the swing risk is reduced, and therefore the sealing durability and the operation stability are improved.

[0009] The utility model further sets up: the left blocking part and the right blocking part are half ring shape.

[0010] By adopting the technical scheme, the left blocking part and the right blocking part are designed as the half ring shape structure, when the valve disc rotates to the full closing state, the half ring shape blocking part forms the ring type contact with the two sides of the valve disc, the half ring shape structure increases the contact area of the valve disc and the blocking part, provides more uniform sealing pressure, improves the sealing effect under the high-temperature exhaust gas, prevents the gas leakage, and simultaneously, the ring type design helps to disperse the airflow impact force, reduces the vibration of the valve disc, and further suppresses the abnormal sound generation.

[0011] The utility model further sets up: the top and bottom of the left blocking part and the right blocking part are provided with the arc through slot compatible with the through hole.

[0012] By adopting the technical scheme, the top and bottom of the left blocking part and the right blocking part are provided with the arc-shaped through grooves which are matched with the through holes of the valve rod, and the valve rod is smoothly moved through the arc-shaped through grooves when rotating; the arc-shaped through grooves reduce the interference and friction between the valve rod and the left blocking part and the right blocking part, ensure the smoothness and centricity of the valve disc during rotation, and avoid sealing failure caused by thermal deformation or wear; meanwhile, the structure helps to maintain the accurate positioning of the valve disc in the full-closed state, and improves the sealing reliability and valve life.

[0013] The utility model further sets up: the valve rod is equipped with the anti-swing spring.

[0014] By adopting the technical scheme, the anti-swing spring is sleeved on the valve rod, radial pre-tightening force is provided, and the radial movement of the valve rod in the through hole is inhibited; the elastic support of the spring effectively absorbs the vibration caused by the pulsating airflow of the engine, reduces the swing amplitude of the valve rod and the valve disc, and significantly reduces the metal impact noise; meanwhile, the anti-swing spring compensates the assembly gap, enhances the stability of the overall structure, and prolongs the service life.

[0015] The utility model further sets up: the valve body bottom is provided with the extension groove opposite to the valve rod, and the bottom of the valve rod is located in the extension groove; a clamping spring can be additionally arranged in the extension groove to prevent the valve rod from swinging.

[0016] By adopting the technical scheme, the extension groove is arranged at the bottom of the valve body, the bottom of the valve rod is inserted into the extension groove, an additional support point is formed, and the movement of the valve rod is jointly restricted by the through hole and the extension groove; the bottom end of the valve rod is supported by the extension groove, the rigidity of the valve rod is increased, and the deviation or swing of the valve disc under the impact of the airflow is further prevented; the design cooperates with the anti-swing spring, and the noise risk is reduced twice, the accurate positioning of the valve in the fully-opened and fully-closed states is ensured, and the sound quality and running stability of the exhaust system are improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a structural schematic view of the utility model as a whole;

[0018] Fig. 2 It is a sectional view of the utility model as a whole;

[0019] Fig. 3 It is a structural schematic view of part of the valve of the utility model.

[0020] In the drawing: 1, valve body; 11, flow passage; 12, left blocking part; 13, right blocking part; 14, containing space; 15, through hole; 16, arc-shaped through groove; 2, valve disc; 31, driving mechanism; 4, valve rod; 41, disc through groove; 5, anti-swing spring; 6, extension groove. DETAILED DESCRIPTION

[0021] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0022] 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, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] As shown in Figs. 1-3 The utility model discloses a kind of exhaust valves of stable operation, including drive mechanism 31, valve disc 2 and valve body 1, flow passage 11 is provided in valve body 1, left blocking portion 12 and right blocking portion 13 are respectively provided in the two sides of valve body 1 and left blocking portion 12 and right blocking portion 13 are staggered arrangement, accommodating space 14 for accommodating valve disc 2 is provided between left blocking portion 12 and right blocking portion 13, drive mechanism 31 drives valve disc 2 rotation and valve disc 2 is located in accommodating space 14, valve disc 2 has full open state and full close state, full open state is that valve disc 2 is parallel with flow passage 11, the top and bottom of valve disc 2 are abutted with left blocking portion 12 and right blocking portion 13, flow passage 11 opens;Full close state is that valve disc 2 is perpendicular to flow passage 11, the two sides of valve disc 2 are respectively abutted with left blocking portion 12 and right blocking portion 13, drive mechanism 31 drives valve disc 2 to rotate in the accommodating space 14 in valve body 1, when full open state, valve disc 2 is parallel with flow passage 11, and its top and bottom are abutted with left blocking portion 12 and right blocking portion 13, make flow passage 11 completely open;When full close state, valve disc 2 is perpendicular to flow passage 11, and its two sides are respectively abutted with left blocking portion 12 and right blocking portion 13, and flow passage 11 is blocked;By the staggered arrangement of left blocking portion 12 and right blocking portion 13, valve disc 2 is formed stable abutment with blocking portion in full open and full close state, effectively limit the radial swing and circumferential swing of valve disc 2, reduce the abnormal sound generated by air flow impact;At the same time, this multi-point multi-direction contact mode enhances the sealing property, avoids the problem of exhaust gas leakage after high-temperature thermal deformation, improves the operation stability and reliability of exhaust valve.

[0024] The valve stem 4 is provided with a through hole 15 in the valve body 1, the valve stem 4 is provided with a piece through slot 41 in the valve stem 4, and the valve stem 4 and the valve piece 2 are synchronously rotated, the valve stem 4 passes through the through hole 15 of the valve body 1, the valve piece 2 is inserted into the piece through slot 41 of the valve stem 4, the driving mechanism 31 drives the valve piece 2 to rotate synchronously by rotating the valve stem 4, and the switching of the valve piece 2 between the fully open and fully closed states is realized; the valve stem 4 and the valve piece 2 are rigidly connected through the piece through slot 41, the transmission synchronization and precision are ensured, and the problem of misalignment of the sealing surface caused by wear of the connecting rod is reduced; meanwhile, the guiding effect of the valve stem 4 further restricts the movement track of the valve piece 2, reduces the shaking risk, and thus improves the sealing durability and operation stability.

[0025] The left blocking part 12 and the right blocking part 13 are half-ring-shaped, and are designed as a half-ring-shaped structure, and when the valve piece 2 rotates to the fully closed state, the half-ring-shaped blocking part forms a ring-shaped contact with both sides of the valve piece 2; the half-ring-shaped structure increases the contact area of the valve piece 2 and the blocking part, provides more uniform sealing pressure, improves the sealing effect under high-temperature exhaust gas, and prevents gas leakage; meanwhile, the ring-shaped design helps to disperse the airflow impact force, reduces the vibration of the valve piece 2, and further suppresses the generation of abnormal sound.

[0026] The top and bottom of the left blocking part 12 and the right blocking part 13 are provided with an arc-shaped through slot 16 matched with the through hole 15, the top and bottom of the left blocking part 12 and the right blocking part 13 are provided with the arc-shaped through slot 16 matched with the through hole 15 of the valve stem 4, and the valve stem 4 smoothly moves through the arc-shaped through slot 16 when rotating; the arc-shaped through slot 16 reduces the interference and friction between the valve stem 4 and the left blocking part 12 and the right blocking part 13, ensures the smoothness and centration of the valve piece 2 during rotation, and avoids sealing failure caused by thermal deformation or wear; meanwhile, the structure helps to maintain the accurate positioning of the valve piece 2 in the fully closed state, improves the sealing reliability and valve life.

[0027] The anti-shaking spring 5 is sleeved on the valve stem 4, provides a radial pre-tightening force, and suppresses the radial movement of the valve stem 4 in the through hole 15; the elastic support of the spring effectively absorbs the vibration caused by the pulsating airflow of the engine, reduces the shaking amplitude of the valve stem 4 and the valve piece 2, and thus significantly reduces the metal impact noise; meanwhile, the anti-shaking spring 5 compensates for the assembly gap, enhances the stability of the overall structure, and prolongs the service life.

[0028] The bottom of the valve body 1 is provided with an extension groove 6 opposite to the valve rod 4, the bottom of the valve rod 4 is located in the extension groove 6, a clamping spring can be additionally arranged in the extension groove 6 to prevent shaking, the bottom of the valve rod 4 extends into the extension groove 6 to form an additional supporting point, and the extension groove 6 and the through hole 15 jointly constrain the movement of the valve rod 4; the extension groove 6 provides bottom end support for the valve rod 4, increases the rigidity of the valve rod 4, and further prevents the valve disc 2 from being deviated or shaken under the impact of air flow; the design cooperates with the anti-shaking spring 5 to double reduce the risk of abnormal sound, ensures the accurate positioning of the valve in the full open and full closed states, and improves the sound quality and running stability of the exhaust system.

[0029] Working process: the driving mechanism 31 drives the valve disc 2 to rotate in the containing space 14 between the left blocking part 12 and the right blocking part 13 in the valve body 1 through the valve rod 4; when the valve disc 2 rotates to be parallel to the flow channel 11, the top and bottom of the valve disc 2 abut against the blocking parts, and the flow channel 11 is opened; when the valve disc 2 rotates to be perpendicular to the flow channel 11, the two sides of the valve disc 2 abut against the half-ring-shaped and staggered blocking parts.

Claims

1. A stable exhaust valve, characterized in that: The valve body (1) includes a drive mechanism (31), a valve plate (2), and a valve body (1). A flow channel (11) is provided inside the valve body (1). A left blocking part (12) and a right blocking part (13) are respectively provided on both sides of the valve body (1), with the left blocking part (12) and right blocking part (13) arranged in a staggered manner. A receiving space (14) for accommodating the valve plate (2) is provided between the left blocking part (12) and the right blocking part (13). The drive mechanism (31) drives the valve plate (2) to rotate. The valve plate (2) is located in the receiving space (14). The valve plate (2) has a fully open state and a fully closed state. In the fully open state, the valve plate (2) is parallel to the flow channel (11), and the top and bottom of the valve plate (2) abut against the left blocking part (12) and the right blocking part (13), and the flow channel (11) is open. In the fully closed state, the valve plate (2) is perpendicular to the flow channel (11), and the two sides of the valve plate (2) abut against the left blocking part (12) and the right blocking part (13) respectively.

2. The stable exhaust valve according to claim 1, characterized in that: It also includes a valve stem (4), a through hole (15) for the valve stem (4) to pass through, and a through groove (41) for the valve disc (2) to pass through, which constitutes the synchronous rotation of the valve stem (4) and the valve disc (2).

3. The stable exhaust valve according to claim 2, characterized in that: The left blocking part (12) and the right blocking part (13) are in a matching semi-circular shape.

4. The stable exhaust valve according to claim 3, characterized in that: The top and bottom of the left blocking part (12) and the right blocking part (13) are provided with arc-shaped through grooves (16) that are adapted to the through hole (15).

5. The stable exhaust valve according to claim 2, characterized in that: An anti-sway spring (5) is fitted on the valve stem (4).

6. The stable exhaust valve according to claim 5, characterized in that: The valve body (1) has an extension groove (6) at the bottom that is opposite to the valve stem (4), and the bottom of the valve stem (4) is located in the extension groove (6).

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