Composite silencing valve system

Abstract

The utility model provides a composite noise elimination valve system which comprises a pipeline assembly and a main shaft assembly, the pipeline assembly comprises an air inlet pipe and an air outlet pipe, an installation assembly is arranged on the side edge of the pipeline assembly and between the air inlet pipe and the air outlet pipe, the main shaft assembly comprises a main shaft, the main shaft is rotatably arranged on the installation assembly, and a first elastic assembly is arranged on the main shaft; one side of the main valve plate is fixedly connected with the main shaft; a secondary channel is arranged on the main valve plate; the secondary shaft assembly comprises a secondary shaft, the secondary shaft is rotatably arranged on the main valve plate, and a second elastic piece is arranged on the secondary shaft; and the secondary valve plate is connected with the secondary shaft. According to the embodiment of the utility model, the secondary valve plate is arranged on the main valve plate, the secondary valve plate is opened when the airflow is small, the influence of exhaust airflow fluctuation on the main valve plate is effectively reduced, the main valve plate and the secondary valve plate are opened simultaneously when the airflow is large, the gas circulation area is effectively increased, and the flow noise is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of commercial vehicle exhaust systems, and in particular relates to a composite muffler valve system. Background Art

[0002] Heavy-duty natural gas engines are characterized by high horsepower, high exhaust flow, and high exhaust temperature. Their internal airflow usually fluctuates more than that of passenger car exhaust, and the operating conditions are more complex: Under normal circumstances, the valve plate will shake at low and medium engine speeds, but this phenomenon will not occur at high speeds. This is because at low speeds, the engine exhaust interval is long, resulting in large fluctuations in airflow pressure, and the valve plate is shaken by the unstable airflow thrust; at high engine speeds, the airflow flow is large and the fluctuations are obvious, and the impact force on the valve plate is much higher than that of the valve used in passenger cars.

[0003] However, most of the conventional after-treatment platforms on the market are mainly divided into box-type platform structures and cylinder-type platform structures, which occupy a large space. In addition, the existing exhaust valves are mainly used for passenger cars, and there is less research on natural gas commercial vehicle valves. Since commercial vehicle engines have larger displacement and stronger airflow volatility, especially at medium and low speeds, it is easy to cause valve vibration. The passive valves used in passenger cars are generally only suitable for relatively stable medium and low flow conditions, and their structure cannot be applied to the field of commercial vehicle silencing. Summary of the Invention

[0004] To solve at least one technical problem in the prior art, the present invention provides a composite muffler valve system suitable for commercial vehicle exhaust systems. To achieve the above technical objectives, the present invention adopts the following technical solutions:

[0005] The present invention provides a composite muffler valve system, comprising:

[0006] The pipe assembly includes an air inlet pipe and an air outlet pipe, wherein the air inlet pipe and / or the air outlet pipe are arranged in sequence along a first direction and are interconnected to form a main channel. A mounting assembly is provided on the side of the pipe assembly and between the air inlet pipe and the air outlet pipe.

[0007] A spindle assembly, comprising a spindle, the spindle being rotatably disposed on the mounting assembly, the extension direction of the spindle being perpendicular to the first direction, the spindle being provided with a first elastic assembly, the first elastic assembly connecting the mounting assembly and the spindle assembly;

[0008] a main valve disc, one side of which is fixedly connected to the main shaft, and the main valve disc is capable of opening or closing the main channel; a secondary channel is provided on the main valve disc, and the secondary channel passes through the main valve disc along a first direction;

[0009] A secondary shaft assembly includes a secondary shaft, the secondary shaft is rotatably disposed on the main valve plate, and a second elastic member is provided on the secondary shaft;

[0010] The secondary valve disc is connected to the secondary shaft. The second elastic member connects the primary valve disc and the secondary valve disc. The secondary valve disc can open or close the secondary channel.

[0011] Furthermore, a first mounting hole is provided at one end of the air inlet pipe close to the air outlet pipe and / or at one end of the air outlet pipe close to the air inlet pipe.

[0012] The installation components include:

[0013] A mounting seat, which is U-shaped, and the extending direction of the mounting seat is perpendicular to the first direction;

[0014] Two blocking covers, one blocking cover is provided at one end of the mounting base, and the other blocking cover is provided at the other end of the mounting base, each blocking cover is provided with a first through hole, and the mounting base and the two blocking covers are capable of covering the first mounting hole;

[0015] One end of the main shaft passes through the first through hole of one of the blocking covers, and the other end passes through the first through hole of the other blocking cover.

[0016] Furthermore, the mounting seat and / or the blocking cover are provided with notches;

[0017] The spindle assembly further includes two shaft caps, one of which is fixedly connected to one end of the spindle and the other is fixedly connected to the other end of the spindle, and either of the shaft caps is provided with an opening;

[0018] The first elastic component includes two first torsion springs, and each of the first torsion springs is arranged between one of the blocking covers and one of the shaft caps;

[0019] One end pin of the first torsion spring is arranged in the notch, and the other end pin is arranged in the opening.

[0020] Furthermore, the mounting seat includes an upper side edge, which extends toward the outside of the mounting seat and forms a convex piece, and the notch is provided on the convex piece.

[0021] Furthermore, any of the shaft caps includes an extension portion, the extension portion extends toward the inner side of the mounting seat, and the extension portion is provided with the opening;

[0022] Any one of the blocking covers is provided with a convex portion, the convex portion protrudes toward the outside of the mounting seat, and the convex portion is provided with the first through hole;

[0023] One end of any one of the first torsion springs is arranged in the extending portion, and the other end is sleeved on the convex portion.

[0024] Furthermore, the main valve plate is provided with two first flanges on a side close to the air outlet pipe, the two first flanges are arranged at intervals, and a second mounting hole is provided on any of the first flanges;

[0025] One end of the secondary shaft passes through the second mounting hole of one first flange, and the other end passes through the second mounting hole of another first flange.

[0026] Furthermore, two second flanges are provided on both sides of the secondary valve plate and on a side of the secondary valve plate close to the air intake pipe, and the two second flanges are spaced apart and provided on the inner sides of the two first flanges;

[0027] A third mounting hole is provided on any of the second flanges, and the third mounting hole is connected to the second mounting hole;

[0028] One end of the secondary shaft passes through the third mounting hole of one second flange, and the other end passes through the third mounting hole of another second flange.

[0029] Furthermore, the second elastic member is a second torsion spring, and the second torsion spring is sleeved on the secondary shaft and arranged between the two second flanges;

[0030] One pin of the second torsion spring abuts against the secondary valve plate, and the other pin abuts against the primary valve plate.

[0031] Furthermore, it also includes:

[0032] a retaining ring, fixedly connected to one end of the air outlet pipe close to the air inlet pipe, wherein the inner diameter of the retaining ring is smaller than the diameter of the main valve plate;

[0033] a gasket, fixedly connected to a side of the baffle ring close to the air outlet pipe;

[0034] The main valve plate is arranged on a side of the gasket close to the air outlet pipe.

[0035] Furthermore, it further comprises a downstream retaining ring, wherein the cross-sectional area of ​​the downstream retaining ring gradually decreases from an end close to the air inlet pipe to an end close to the air outlet pipe;

[0036] One end of the downstream retaining ring close to the air outlet pipe is fixedly connected to the retaining ring, and the other end is fixedly connected to the inner wall of the air inlet pipe.

[0037] The beneficial effects of the technical solution provided by the embodiment of the utility model are:

[0038] 1) In the embodiment of the present invention, a secondary valve plate is provided on the main valve plate, and a second torsion spring with smaller stiffness is connected to the secondary valve plate. When the airflow is small, the secondary valve plate opens first, effectively reducing the influence of the main valve plate on the exhaust airflow fluctuation. When the airflow is large, the main valve plate and the secondary valve plate open at the same time, effectively increasing the gas flow area, reducing flow noise, reducing back pressure, and meeting the power requirements.

[0039] 2) By providing first torsion springs at both ends of the main shaft, the embodiment of the present invention can avoid the problem of increased wear of the shaft sleeve caused by asymmetric force on the main valve plate under the impact of large airflow, thereby extending the service life of the composite muffler valve system.

[0040] 3) The embodiment of the present invention adopts the combination of downstream retaining ring, gasket and retaining ring, so that the airflow through the composite silencer valve system is smoother and the impact caused by cross-sectional sudden change is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a main sectional view of the composite muffler valve system in an embodiment of the present utility model.

[0042] Figure 2 This is an exploded view of the composite muffler valve system in an embodiment of the present utility model.

[0043] Figure 3 This is an exploded view of the composite muffler valve system in an embodiment of the present utility model. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0045] In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal connections between two components; they can refer to wireless connections or wired connections. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0047] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] The present invention provides a composite muffler valve system, comprising:

[0049] The pipe assembly 1 includes an air inlet pipe 11 and an air outlet pipe 12. The air inlet pipe 11 and / or the air outlet pipe 12 are arranged in sequence along a first direction A and are interconnected to form a main channel. A mounting assembly 2 is provided on the side of the pipe assembly 1 and between the air inlet pipe 11 and the air outlet pipe 12.

[0050] The spindle assembly 3 includes a spindle 31, the spindle 31 being rotatably disposed on the mounting assembly 2, the extension direction of the spindle 31 being perpendicular to the first direction A, and a first elastic component 4 being disposed on the spindle 31, the first elastic component 4 connecting the mounting assembly 2 and the spindle assembly 3;

[0051] A main valve disc 5, one side of which is fixedly connected to the main shaft 31, and the main valve disc 5 can open or close the main channel; a secondary channel is provided on the main valve disc 5, and the secondary channel passes through the main valve disc 5 along the first direction A;

[0052] A secondary shaft assembly 6 includes a secondary shaft 61 rotatably disposed on the main valve plate 5 , and a second elastic member 62 is disposed on the secondary shaft 61 ;

[0053] The secondary valve disc 7 is connected to the secondary shaft 61 , and the second elastic member 62 connects the primary valve disc 5 and the secondary valve disc 7 . The secondary valve disc 7 can open or close the secondary channel.

[0054] In a specific embodiment, Figure 1 and Figure 2As shown, the duct assembly 1 extends from left to right, with the outlet pipe 12 on the left and the inlet pipe 11 on the right. Airflow enters the inlet pipe 11 from the right and flows out of the outlet pipe 12. The mounting assembly 2 is provided on the upper side of the duct assembly 1. The main shaft 31 extends in a direction perpendicular to the paper and is rotatably connected to the mounting assembly 2.

[0055] During operation, airflow drives the main valve disc 5 to rotate clockwise. Since the upper side of the main valve disc 5 is fixedly connected to the main shaft 31, rotation of the main valve disc 5 drives the main shaft 31 to rotate clockwise. When airflow decreases or stops, the main valve disc 5 rotates counterclockwise and returns to its initial position, driving the main shaft 31 to rotate counterclockwise. The upper side of the main valve disc 5 and the main shaft 31 can be welded.

[0056] The first elastic component 4 is provided on the main shaft 31, and the first elastic component 4 connects the mounting component 2 and the main shaft component 3. Therefore, during installation, the initial preload force of the main shaft 31 and / or the main valve plate 5 can be adjusted by the first elastic component 4, so that the main valve plate 5 will rotate and open the main channel only when the airflow is greater than or equal to a preset value.

[0057] The main valve disc 5 is provided with the secondary channel and the secondary valve disc 7, and the main valve disc 5 and the secondary valve disc 7 are connected by the secondary shaft 61 and the second elastic member 62. Therefore, when the airflow is small, the gas can open the secondary valve disc 7 and flow out of the pipeline assembly 1 through the secondary channel, thereby relieving pressure and effectively improving the problem of unstable airflow pressure before the valve.

[0058] Furthermore, a first mounting hole 12a is provided at one end of the air inlet pipe 11 close to the air outlet pipe 12 and / or at one end of the air outlet pipe 12 close to the air inlet pipe 11.

[0059] The installation component 2 includes:

[0060] The mounting seat 21 is U-shaped, and the extending direction of the mounting seat 21 is perpendicular to the first direction A;

[0061] Two blocking covers 22, one blocking cover 22 is provided at one end of the mounting base 21, and the other blocking cover 22 is provided at the other end of the mounting base 21, each blocking cover 22 is provided with a first through hole, and the mounting base 21 and the two blocking covers 22 can cover the first mounting hole 12a;

[0062] One end of the main shaft 31 passes through the first through hole of one blocking cover 22 , and the other end passes through the first through hole of the other blocking cover 22 .

[0063] like Figure 3As shown, the upper side of the right end of the exhaust pipe 12 is provided with the first mounting hole 12a, and the first mounting hole 12a is rectangular, the mounting seat 21 is U-shaped, and the blocking covers 22 are provided at both ends. During installation, the mounting seat 21 and the blocking covers 22 on both sides can be welded and connected to form a whole, and then the exhaust pipe 12 is welded as a whole to cover the first mounting hole 12a.

[0064] like Figure 3 As shown, the left end of the main shaft 31 passes through the first through hole of the left end blocking cover 22, and the right end passes through the first through hole of the right end blocking cover 22, so that the main shaft 31 is rotatably set on the mounting assembly 2. This structure is simple and stable, and can ensure the stability of the main shaft 31 and the main valve plate 5 during rotation.

[0065] Furthermore, a notch 21a is provided on the mounting seat 21 and / or the blocking cover 22;

[0066] The spindle assembly 3 further includes two shaft caps 32, one of the shaft caps 32 is fixedly connected to one end of the spindle 31, and the other shaft cap 32 is fixedly connected to the other end of the spindle 31, and each of the shaft caps 32 is provided with an opening 32a;

[0067] The first elastic component 4 includes two first torsion springs 41 , and each of the first torsion springs 41 is disposed between one of the blocking covers 22 and one of the shaft caps 32 ;

[0068] One end of the first torsion spring 41 is disposed in the notch 21 a , and the other end of the first torsion spring 41 is disposed in the opening 32 a .

[0069] In a specific embodiment, Figure 3 As shown, the left and right ends of the main shaft 31 are both provided with the shaft cap 32, wherein a first torsion spring 41 is provided between the shaft cap 32 at the left end and the blocking cover 22 at the left end, and a first torsion spring 41 is also provided between the shaft cap 32 at the right end and the blocking cover 22 at the right end. The shaft cap 32 and the blocking cover 22 can limit the position of the first torsion spring 41, avoid the first torsion spring 41 from moving axially or radially along the first torsion spring 41, and ensure the stability of the first torsion spring 41.

[0070] By arranging the shaft cap 32 and the first torsion spring 41 at both ends of the main shaft 31, the problem of component wear caused by asymmetric force on the left and right ends of the main shaft 31 and the main valve plate 5 during rotation is avoided, and the stability of the main shaft 31 and the main valve plate 5 during rotation is ensured, which greatly improves the durability and reliability of the composite muffler valve system and increases the service life of the composite muffler valve system.

[0071] like Figure 3As shown, one end of the pin of the first torsion spring 41 extends toward the notch 21a and engages with the notch 21a, thereby securing the one end of the pin of the first torsion spring 41. The position of the notch 21a is not limited. In a specific embodiment, the mounting base 21 includes an upper side that extends toward the outside of the mounting base 21 and forms a protrusion 211. The protrusion 211 is provided with the notch 21a.

[0072] Similarly, the other end pin of the first torsion spring 41 extends toward the opening 32a and is inserted into the opening 32a, thereby fixing the other end pin of the first torsion spring 41. The shapes of the shaft cap 32 and the opening 32a are not limited.

[0073] In a specific embodiment, the shaft cap 32 is disc-shaped and welded to the end of the main shaft 31. The openings 32a are spaced apart along the circumferential direction on any of the shaft caps 32. One end of the first torsion spring 41 is inserted into the notch 21a, and the other end is inserted into the opening 32a of the shaft cap 32. By adjusting the position of the opening 32a on the shaft cap 32 and the notch 21a on the mounting seat 21, the torque of the first torsion spring 41 can be adjusted. Furthermore, because the shaft cap 32 is fixedly connected to the main shaft 31, this structure can adjust the initial preload force during rotation of the main shaft 31, thereby adjusting the initial preload force of the main valve disc 5 during rotation.

[0074] In another specific embodiment, any of the shaft caps 32 includes an extension portion 321 , the extension portion 321 extends toward the inner side of the mounting seat 21 , and the extension portion 321 is provided with the opening 32 a ;

[0075] Any of the blocking covers 22 is provided with a convex portion 221 , the convex portion 221 protrudes toward the outside of the mounting seat 21 , and the convex portion 221 is provided with the first through hole;

[0076] One end of any one of the first torsion springs 41 is disposed in the extending portion 321 , and the other end is sleeved on the protrusion 221 .

[0077] like Figure 3 As shown, the two shaft caps 32 at both ends of the main shaft 31 are conducive to simultaneously adjusting the initial preload force of the two first torsion springs 41 and ensuring that the initial preload force of the two first torsion springs 41 is the same.

[0078] Taking the left end as an example, the extension portion 321 of the shaft cap 32 extends toward the right side, and a plurality of openings 32a are provided on the extension portion 321. The plurality of openings 32a are evenly spaced along the circumference, and the number of the openings 32a can be adjusted according to actual needs. The left end of the first torsion spring 41 is provided in the extension portion 321, so that the extension portion 321 can prevent the left end of the first torsion spring 41 from deviating along the radial direction of the first torsion spring 41, thereby improving the stability of the left end of the first torsion spring 41; the convex portion 221 of the blocking cover 22 protrudes toward the left side, so that the right end of the first torsion spring 41 can be sleeved with the convex portion 221, thereby preventing the right end of the first torsion spring 41 from deviating along the radial direction of the first torsion spring 41, thereby improving the stability of the right end of the first torsion spring 41. The structural design is reasonable and is conducive to improving the working stability of the first torsion spring 41.

[0079] The secondary shaft assembly 6 is rotatably disposed on the main valve plate 5. In a specific embodiment, Figure 3 As shown, the main valve plate 5 is provided with two first flanges 51 on one side close to the air outlet pipe 12 , and the two first flanges 51 are spaced apart, and a second mounting hole is provided on any of the first flanges 51 ;

[0080] One end of the secondary shaft 61 passes through the second mounting hole of one first flange 51 , and the other end passes through the second mounting hole of the other first flange 51 .

[0081] The shape of the through hole on the main valve plate 5 is not limited and can be circular, rectangular, square, etc. In a specific embodiment, Figure 3 As shown, a square hole is provided on the main valve plate 5, and two first flanges 51 are respectively provided on both sides of the square hole. The first mounting holes 12a of the two first flanges 51 are coaxial, which is conducive to the installation of the secondary shaft 61 and ensures the stable rotation of the secondary shaft 61.

[0082] The connection method between the secondary valve disc 7 and the secondary shaft 61 is not limited. In the above embodiment, the secondary valve disc 7 can be fixedly connected to the secondary shaft 61, and the second elastic member 62 is provided at both ends of the secondary shaft 61, with one end of the second elastic member 62 connected to the secondary shaft 61 and the other end connected to the main valve disc 5.

[0083] In another specific embodiment, Figure 3 As shown, two second flanges 71 are provided on both sides of the secondary valve plate 7 and on the side of the secondary valve plate 7 close to the air intake pipe 11. The two second flanges 71 are spaced apart and provided on the inner sides of the two first flanges 51.

[0084] A third mounting hole is provided on any of the second flanges 71, and the third mounting hole is communicated with the second mounting hole;

[0085] One end of the secondary shaft 61 passes through the third mounting hole of one second flange 71, and the other end passes through the third mounting hole of the other second flange 71. As will be appreciated, the second flange 71 is disposed between the two first flanges 51, so that the third mounting hole on the second flange 71 is connected to and coaxial with the second mounting hole on the first flange 51. This rational structure facilitates the installation of the secondary shaft 61.

[0086] The structure and installation method of the secondary shaft 61 are not limited. In a specific embodiment, the secondary shaft 61 is provided with threads at both ends. During installation, the secondary shaft 61 is sequentially passed through the second mounting hole of the primary valve disc 5, the third mounting hole of the secondary valve disc 7, and the second torsion spring. Nuts are then screwed onto both ends of the secondary shaft 61 and tightened. This allows the secondary shaft 61 and the secondary valve disc 7 to be mounted on the primary valve disc 5.

[0087] In another specific embodiment, one end of the secondary shaft 61 is a thick end, and the other end is provided with a positioning ring.

[0088] In this embodiment, the second elastic member 62 is a second torsion spring, which is sleeved on the secondary shaft 61 and disposed between the two second flanges 71;

[0089] One pin of the second torsion spring abuts against the secondary valve plate 7 , and the other pin abuts against the primary valve plate 5 .

[0090] like Figure 3 As shown, during installation, the thin end of the secondary shaft 61 is passed through the first mounting hole 12a of the main valve plate 5, the second mounting hole of the secondary valve plate 7, and the second torsion spring in sequence, and a positioning ring is sleeved and welded on the other end of the secondary shaft 61, and the secondary shaft 61 and the secondary valve plate 7 can be installed on the main valve plate 5.

[0091] It should be noted that the second torsion spring is not set with an initial preload force to ensure that in the initial state, the secondary valve disc 7 and the main valve disc 5 are on the same horizontal plane. A second torsion spring with smaller stiffness can also be selected to facilitate the opening of the secondary valve disc 7 under a smaller airflow, thereby allowing the gas to flow out of the secondary channel.

[0092] During actual operation, under the low engine speed state, due to the small pressure before the valve and the small gas flow, the airflow can overcome the second torsion spring on the secondary valve plate 7 and flow out from the square hole. At this time, the main valve plate 5 hardly rotates. As the engine speed gradually increases, the air flow in the pipeline assembly 1 increases, and the airflow pressure gradually pushes the main valve plate 5 open. At this time, the main valve plate 5 and the secondary valve plate 7 are opened at the same time, which can effectively increase the flow area of ​​the composite muffler valve system, reduce the generation of flow noise, reduce back pressure, reduce power loss, and ensure the power of the vehicle.

[0093] Furthermore, it also includes:

[0094] A retaining ring 81 is fixedly connected to one end of the air outlet pipe 12 close to the air inlet pipe 11 , and the inner diameter of the retaining ring 81 is smaller than the diameter of the main valve plate 5 ;

[0095] A gasket 82 is fixedly connected to a side of the retaining ring 81 close to the air outlet pipe 12;

[0096] The main valve plate 5 is disposed on a side of the gasket 82 close to the air outlet pipe 12 .

[0097] like Figure 1 and Figure 2 As shown, the inner diameter of the retaining ring 81 is smaller than the diameter of the main valve disc 5, which facilitates the main valve disc 5 to open or close the main channel. The gasket 82 is provided between the main valve disc 5 and the retaining ring 81. The gasket 82 is elastic and can avoid collision between the main valve disc 5 and the retaining ring 81, and avoid wear between the main valve disc 5 and the retaining ring 81. The material of the gasket 82 is not limited, for example, a steel wire gasket can be used.

[0098] Furthermore, it further comprises a downstream retaining ring 83, the cross-sectional area of ​​which gradually decreases from the end close to the air inlet pipe 11 to the end close to the air outlet pipe 12;

[0099] One end of the downstream retaining ring 83 close to the air outlet pipe 12 is fixedly connected to the retaining ring 81 , and the other end is fixedly connected to the inner wall of the air inlet pipe 11 .

[0100] The left end of the downstream retaining ring 83 can be welded to the inner ring of the retaining ring 81, and the right end can be welded to the inner wall of the intake pipe 11. Figure 1 As shown, from the right side to the left side, the downstream retaining ring 83 can play a role in guiding the airflow, so that the airflow flows out through the inner ring of the downstream retaining ring 83.

[0101] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to examples, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A composite muffler valve system, characterized in that: include: A pipe assembly (1) comprises an air inlet pipe (11) and an air outlet pipe (12), wherein the air inlet pipe (11) and / or the air outlet pipe (12) are arranged in sequence along a first direction (A) and are interconnected to form a main channel; a mounting assembly (2) is provided on a side of the pipe assembly (1) and between the air inlet pipe (11) and the air outlet pipe (12); A spindle assembly (3) comprising a spindle (31), the spindle (31) being rotatably disposed on the mounting assembly (2), the extension direction of the spindle (31) being perpendicular to the first direction (A), the spindle (31) being provided with a first elastic assembly (4), the first elastic assembly (4) connecting the mounting assembly (2) and the spindle assembly (3); A main valve plate (5), one side of the main valve plate (5) is fixedly connected to the main shaft (31), and the main valve plate (5) is capable of opening or closing the main channel; a secondary channel is provided on the main valve plate (5), and the secondary channel passes through the main valve plate (5) along a first direction (A); A secondary shaft assembly (6) comprising a secondary shaft (61), the secondary shaft (61) being rotatably disposed on the main valve plate (5), and a second elastic member (62) being provided on the secondary shaft (61); The secondary valve disc (7) is connected to the secondary shaft (61), and the second elastic member (62) is connected to the main valve disc (5) and the secondary valve disc (7). The secondary valve disc (7) can open or close the secondary channel.

2. The composite muffler valve system according to claim 1, characterized in that: A first mounting hole (12a) is provided at one end of the air inlet pipe (11) close to the air outlet pipe (12) and / or at one end of the air outlet pipe (12) close to the air inlet pipe (11). The installation component (2) comprises: The mounting seat (21) is U-shaped, and the extension direction of the mounting seat (21) is perpendicular to the first direction (A); Two blocking covers (22), one blocking cover (22) being provided at one end of the mounting seat (21), and the other blocking cover (22) being provided at the other end of the mounting seat (21), each blocking cover (22) being provided with a first through hole, and the mounting seat (21) and the two blocking covers (22) being capable of covering the first mounting hole (12a); One end of the main shaft (31) passes through the first through hole of one blocking cover (22), and the other end passes through the first through hole of the other blocking cover (22).

3. The composite muffler valve system according to claim 2, characterized in that: The mounting seat (21) and / or the blocking cover (22) are provided with a notch (21a); The spindle assembly (3) further comprises two shaft caps (32), one shaft cap (32) being fixedly connected to one end of the spindle (31), and the other shaft cap (32) being fixedly connected to the other end of the spindle (31), and either shaft cap (32) being provided with an opening (32a); The first elastic component (4) includes two first torsion springs (41), and each of the first torsion springs (41) is arranged between one of the blocking covers (22) and one of the shaft caps (32); One end pin of the first torsion spring (41) is arranged in the notch (21a), and the other end pin is arranged in the opening (32a).

4. The composite muffler valve system according to claim 3, characterized in that: The mounting seat (21) comprises an upper side edge, the upper side edge extending toward the outside of the mounting seat (21) and forming a convex piece (211), and the convex piece (211) is provided with the notch (21a).

5. The composite muffler valve system according to claim 3, characterized in that: Any of the shaft caps (32) comprises an extension portion (321), the extension portion (321) extending toward the inner side of the mounting seat (21), and the opening (32a) is provided on the extension portion (321); Any of the blocking covers (22) is provided with a convex portion (221), the convex portion (221) protrudes toward the outside of the mounting seat (21), and the convex portion (221) is provided with the first through hole; One end of any one of the first torsion springs (41) is disposed in the extension portion (321), and the other end is sleeved on the convex portion (221).

6. The composite muffler valve system according to claim 1, characterized in that: Two first flanges (51) are provided on one side of the main valve plate (5) close to the air outlet pipe (12), the two first flanges (51) are spaced apart, and a second mounting hole is provided on any one of the first flanges (51); One end of the secondary shaft (61) passes through the second mounting hole of one first flange (51), and the other end passes through the second mounting hole of another first flange (51).

7. The composite muffler valve system according to claim 6, characterized in that: Two second flanges (71) are provided on both sides of the secondary valve plate (7) and on the side of the secondary valve plate (7) close to the air intake pipe (11), and the two second flanges (71) are arranged at intervals and are provided on the inner sides of the two first flanges (51); A third mounting hole is provided on any of the second flanges (71), and the third mounting hole is communicated with the second mounting hole; One end of the secondary shaft (61) passes through the third mounting hole of one second flange (71), and the other end passes through the third mounting hole of another second flange (71).

8. The composite muffler valve system according to claim 7, characterized in that: The second elastic member (62) is a second torsion spring, which is sleeved on the secondary shaft (61) and disposed between the two second flanges (71); One pin of the second torsion spring abuts against the secondary valve plate (7), and the other pin abuts against the primary valve plate (5).

9. The composite muffler valve system according to claim 1, wherein: Also includes: a retaining ring (81) fixedly connected to one end of the air outlet pipe (12) close to the air inlet pipe (11), wherein the inner diameter of the retaining ring (81) is smaller than the diameter of the main valve plate (5); A gasket (82) is fixedly connected to a side of the retaining ring (81) close to the air outlet pipe (12); The main valve plate (5) is arranged on a side of the gasket (82) close to the air outlet pipe (12).

10. The composite muffler valve system according to claim 9, characterized in that: It also includes a downstream retaining ring (83), wherein the cross-sectional area of ​​the downstream retaining ring (83) gradually decreases from an end close to the air inlet pipe (11) to an end close to the air outlet pipe (12); One end of the downstream retaining ring (83) close to the air outlet pipe (12) is fixedly connected to the retaining ring (81), and the other end is fixedly connected to the inner wall of the air inlet pipe (11).

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