Engine silencer with built-in exhaust valve

Abstract

The invention relates to the technical field of engine silencers, in particular to an engine silencer with a built-in exhaust valve, which comprises a hush pipe, an air guide pipe is fixed at the end part of the hush pipe, and the inside of the hush pipe is communicated with the inside of the air guide pipe; a valve is arranged on the surface of the rotating shaft, a first cleaning plate and a second cleaning plate are arranged on the surface of the valve, a connecting rod is fixed between the first cleaning plate and the second cleaning plate, a limiting pipe is arranged on the surface of the valve, and a limiting rod is arranged between the first cleaning plate and the second cleaning plate; a through hole is formed in the surface of the stress block, and a stress plate is arranged in the stress block; the waste gas cleaning device has the beneficial effects that when waste gas passes through a gas guide pipe, the waste gas is blown into a stress groove in the surface of a stress block, so that the stress block is stressed, the waste gas can be blown away from a through hole, carbon deposition remaining in the stress groove is reduced, and after the stress block is stressed, a second cleaning plate is driven to move through a fixing rod.

Description

Technical Field

[0001] The invention relates to the technical field of engine mufflers, in particular to an engine muffler with a built-in exhaust valve. Background Art

[0002] The exhaust gas produced by the engine during operation is mixed with noise, which usually causes great discomfort to the human body. Installing a muffler on the engine exhaust pipe can greatly reduce the noise mixed in the exhaust gas when the engine is working, and minimize the pollution caused by noise. In the prior art, patent CN111140316B includes a muffler shell, a cover plate, filter cotton, a partition plate 1, a partition plate 2, an air guide pipe, a corrugated sound-absorbing cotton, a sound-absorbing asbestos board, a sound-absorbing foam, a filter chamber, a sound-absorbing chamber, an acceleration chamber, an air inlet pipe, and an air outlet pipe. The muffler shell is small at both ends and cylindrical in the middle. The cover plate is on the conical surface close to the air inlet end. The partition plates and the partition plates divide the inside of the muffler shell into a filter chamber, a sound-absorbing chamber, and an acceleration chamber. Dense and breathable filter cotton is placed in the filter chamber. The engine muffler simply filters the engine exhaust intake to improve the exhaust quality. The exhaust is subjected to multiple silencing treatments to fully reduce the noise of the exhaust, and avoids the exhaust that has been silenced by the muffler from generating secondary noise due to the squeezing and friction of unstable airflow when the exhaust is discharged from the outlet pipe. However, a muffler with a built-in valve can reduce the exhaust volume at low speeds to meet emission standards, and can increase the exhaust volume at high speeds to enhance the engine's acceleration capability. Carbon deposits are easily accumulated on the valve surface, resulting in obstruction in the opening and closing of the valve. Summary of the invention

[0003] The object of the present invention is to provide an engine muffler with a built-in exhaust valve to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: an engine muffler with a built-in exhaust valve, comprising: A silencer pipe, an air guide pipe is fixed to the end of the silencer pipe, and the interior of the silencer pipe is communicated with the interior of the air guide pipe; A rotating shaft, a valve is arranged on the surface of the rotating shaft, a first cleaning plate and a second cleaning plate are arranged on the surface of the valve, a connecting rod is fixed between the first cleaning plate and the second cleaning plate, a limiting tube is arranged on the surface of the valve, and a limiting rod is arranged between the first cleaning plate and the second cleaning plate; and A force bearing block is provided with through holes on its surface and a force bearing plate is arranged inside the force bearing block.

[0005] Preferably, a rotating ring is provided on the surface of the air duct, and the rotating ring can rotate on the surface of the air duct. A pull wire is wound on the surface of the rotating ring, and the pull wire is pulled to rotate the rotating ring. The rotating ring is connected to a rotating shaft, and the rotating shaft rotates with the rotating ring. The rotating shaft is located inside the air duct, and the valve swings with the rotation of the rotating shaft.

[0006] Preferably, a groove is provided on the surface of the rotating shaft, an extension plate is fixed in the groove, a limiting rod is inserted into the interior of the extension plate, the limiting rod can move inside the extension plate, an extension ring is fixed on the surface of the limiting rod, a first spring is arranged on the outside of the limiting rod, one end of the first spring is connected to the surface of the extension ring, and the other end of the first spring is connected to the surface of the extension plate, and the first spring has a thrust on the extension ring so that the extension ring moves away from the surface of the extension plate.

[0007] Preferably, the connecting rod is inserted into the interior of the limiting tube, the connecting rod can move inside the limiting tube, the first cleaning plate moves with the connecting rod, the second cleaning plate moves with the connecting rod, the ends of the first cleaning plate and the second cleaning plate are both inserted with telescopic plates, the telescopic plates can be telescoped inside the first cleaning plate and the second cleaning plate, springs are provided inside the first cleaning plate and the second cleaning plate, the springs connect the ends of the telescopic plate and the interior of the second cleaning plate, the springs inside the second cleaning plate and the first cleaning plate have a thrust on the telescopic plate, so that the telescopic plate extends out of the first cleaning plate and the second cleaning plate.

[0008] Preferably, a ball is provided at the end of the telescopic plate, and the ball can roll on the end of the telescopic plate. A fixing rod is fixed to the surface of the second cleaning plate, and a force block is fixed to the end of the fixing rod. A force groove is opened on the surface of the force block, and a through hole is opened on the surface of the force block. There are multiple groups of through holes, and the through holes are connected to the inside of the force groove.

[0009] Preferably, a force-bearing plate is provided inside the force-bearing groove, and the force-bearing plate can move in the force-bearing groove. A plug-in rod is fixed on the surface of the force-bearing plate, and the other end of the plug-in rod is connected to the top holding plate. The top holding plate moves with the plug-in rod, and a second spring is provided outside the plug-in rod, one end of the second spring is connected to the surface of the force-bearing plate, and the other end of the second spring is connected to the inner wall of the force groove, and the second spring has a thrust on the force-bearing plate, so that the force-bearing plate moves away from the top holding plate.

[0010] Preferably, a receiving groove is provided on the surface of the force-bearing block, the holding plate is located in the receiving groove, and the holding plate can move in the receiving groove.

[0011] Preferably, when the force-bearing block moves to one side of the valve, the top holding plate moves along with the force-bearing plate, and the top holding plate is located at the edge of the valve after moving.

[0012] Preferably, exhaust gas passes through the interior of the air duct, and the exhaust gas enters the interior of the silencer pipe through a valve from the interior of the air duct. When the exhaust gas passes through the interior of the air duct, it is blown into the stress groove on the surface of the stress block, so that the stress block is subjected to a top thrust.

[0013] Preferably, when the exhaust gas in the air duct is blown into the stress groove on the surface of the stress block, the exhaust gas is blown onto the surface of the stress plate at the same time, and the exhaust gas pushes the stress plate to move toward the top holding plate, causing the stress plate to move, and the stress plate drives the top holding plate to move through the plug-in rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes that when the exhaust gas passes through the air duct, the exhaust gas is blown into the stress groove on the surface of the stress block, so that the stress block is stressed and the exhaust gas can be blown away from the through hole, reducing carbon deposits left in the stress groove. After the stress block is stressed, the second cleaning plate is driven to move by the fixed rod, and the second cleaning plate drives the first cleaning plate to move by the connecting rod. The ends of the second cleaning plate and the first cleaning plate are both provided with telescopic plates, and one end of the telescopic plate located inside the second cleaning plate and the first cleaning plate is connected to a spring, which is supported on the surface of the telescopic plate so that the telescopic plate extends out of the second cleaning plate and the first cleaning plate. When the first cleaning plate and the second cleaning plate move, the end of the telescopic plate is supported inside the air duct, and the end of the telescopic plate is provided with a ball bearing, which is supported on the inner wall of the air duct, so that the telescopic plate can always be supported on the inner wall of the air duct, so that the carbon deposits on the entire surface of the air duct can be cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 2 This is a structural schematic diagram of another viewing angle of the present invention.

[0017] Figure 3 It is a schematic diagram of the valve structure of the present invention.

[0018] Figure 4 This is a schematic structural diagram of the valve of the present invention from another perspective.

[0019] Figure 5 It is a schematic diagram of the structure of the force-bearing block of the present invention.

[0020] Figure 6 It is a schematic diagram of the structure of the second cleaning plate of the present invention.

[0021] Figure 7 for Figure 3 A schematic diagram of the enlarged structure in the middle.

[0022] Figure 8 for Figure 5 Enlarged schematic diagram of the structure at point B in the middle.

[0023] In the figure: silencer 1, air guide tube 2, pull wire 3, rotating ring 4, rotating shaft 5, valve 6, first cleaning plate 7, limit rod 8, connecting rod 9, limit tube 10, second cleaning plate 11, slot 12, through hole 13, force block 14, force slot 15, fixing rod 16, telescopic plate 17, ball 18, extension ring 19, first spring 20, extension plate 21, force plate 22, top holding plate 23, second spring 24, plug rod 25, storage slot 26. DETAILED DESCRIPTION

[0024] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figures 1 to 8 , the present invention provides a technical solution:.

[0026] Embodiment 1: An engine muffler with a built-in exhaust valve comprises: a muffler pipe 1, an air duct 2 is fixed at the end of the muffler pipe 1, and the interior of the muffler pipe 1 is communicated with the interior of the air duct 2; a rotating shaft 5, a valve 6 is arranged on the surface of the rotating shaft 5, a first cleaning plate 7 and a second cleaning plate 11 are arranged on the surface of the valve 6, a connecting rod 9 is fixed between the first cleaning plate 7 and the second cleaning plate 11, a limiting tube 10 is arranged on the surface of the valve 6, and a limiting rod 8 is arranged between the first cleaning plate 7 and the second cleaning plate 11; and a force-bearing block 14, a through hole 13 is opened on the surface of the force-bearing block 14, a force-bearing plate 22 is arranged inside the force-bearing block 14, a force-bearing groove 15 is opened on the surface of the force-bearing block 14, a through hole 13 is opened on the surface of the force-bearing block 14, a plurality of through holes 13 are arranged, the through holes 13 are communicated with the interior of the force-bearing groove 15, a force-bearing plate 22 is arranged inside the force-bearing groove 15, and the force-bearing plate 22 can move in the force-bearing groove 15.

[0027] Embodiment 2: On the basis of embodiment 1, a rotating ring 4 is provided on the surface of the air duct 2, and the rotating ring 4 can rotate on the surface of the air duct 2. A pull wire 3 is wound on the surface of the rotating ring 4. The pull wire 3 is pulled to rotate the rotating ring 4. The rotating ring 4 is connected to the rotating shaft 5. The rotating shaft 5 rotates with the rotating ring 4. The rotating shaft 5 is located inside the air duct 2. The valve 6 swings with the rotation of the rotating shaft 5. The exhaust gas passes through the inside of the air duct 2, and the exhaust gas enters the inside of the muffler 1 from the inside of the air duct 2 through the valve 6. When the exhaust gas passes through the inside of the air duct 2, it blows into the force groove 15 on the surface of the force block 14, so that the force block 14 is pushed When the exhaust gas in the air duct 2 is blown into the stress groove 15 on the surface of the stress block 14, the exhaust gas is blown onto the surface of the stress plate 22 at the same time. The exhaust gas pushes the stress plate 22 to move in the direction of the top holding plate 23, so that the stress plate 22 moves, and the stress plate 22 drives the top holding plate 23 to move through the plug-in rod 25, and the top holding plate 23 moves with the plug-in rod 25. A second spring 24 is provided on the outside of the plug-in rod 25, one end of the second spring 24 is connected to the surface of the stress plate 22, and the other end of the second spring 24 is connected to the inner wall of the stress groove 15. The second spring 24 has a thrust on the stress plate 22, so that the stress plate 22 moves away from the top holding plate 23.

[0028] A groove 12 is provided on the surface of the rotating shaft 5, and an extension plate 21 is fixed in the groove 12. A limiting rod 8 is inserted into the interior of the extension plate 21, and the limiting rod 8 can move inside the extension plate 21. An extension ring 19 is fixed on the surface of the limiting rod 8, and a first spring 20 is provided on the outside of the limiting rod 8. One end of the first spring 20 is connected to the surface of the extension ring 19, and the other end of the first spring 20 is connected to the surface of the extension plate 21. The first spring 20 has a thrust on the extension ring 19, so that the extension ring 19 is away from the surface of the extension plate 21.

[0029] The connecting rod 9 is inserted into the interior of the limiting tube 10, and the connecting rod 9 can move inside the limiting tube 10. The first cleaning plate 7 moves with the connecting rod 9, and the second cleaning plate 11 moves with the connecting rod 9. The ends of the first cleaning plate 7 and the second cleaning plate 11 are both inserted with a telescopic plate 17, and the telescopic plate 17 can be telescoped inside the first cleaning plate 7 and the second cleaning plate 11. The first cleaning plate 7 and the second cleaning plate 11 are provided with a spring inside, and the spring connects the end of the telescopic plate 17 and the inside of the second cleaning plate 11, and the spring inside the second cleaning plate 11 and the first cleaning plate 7 The telescopic plate 17 has a thrust, so that the telescopic plate 17 extends out of the first cleaning plate 7 and the second cleaning plate 11. The end of the telescopic plate 17 is provided with a ball 18, and the ball 18 can roll on the end of the telescopic plate 17. The surface of the second cleaning plate 11 is fixed with a fixing rod 16, and the end of the fixing rod 16 is fixed with a force block 14. The surface of the force block 14 is provided with a force groove 15. The surface of the force block 14 is provided with a through hole 13. The through hole 13 is provided with multiple groups. The through hole 13 is communicated with the inside of the force groove 15. The inside of the force groove 15 is provided with a force plate 22. The force plate 22 can The force bearing plate 22 moves in the force bearing groove 15, and a plug-in rod 25 is fixed on the surface of the force bearing plate 22. The other end of the plug-in rod 25 is connected to the top holding plate 23. The top holding plate 23 moves with the plug-in rod 25. A second spring 24 is arranged on the outside of the plug-in rod 25. One end of the second spring 24 is connected to the surface of the force bearing plate 22, and the other end of the second spring 24 is connected to the inner wall of the force bearing groove 15. The second spring 24 has a thrust on the force bearing plate 22, so that the force bearing plate 22 is away from the top holding plate 23. A receiving groove 26 is opened on the surface of the force bearing block 14, and the top holding plate 23 is located in the receiving groove 26, and the top holding plate 23 It is able to move in the receiving groove 26. When the force block 14 moves to one side of the valve 6, the top holding plate 23 moves with the force plate 22. After the top holding plate 23 moves, it is located at the edge of the valve 6. When the second cleaning plate 11 moves to the end of the valve 6, the force plate 22 in the force groove 15 is forced to drive the plug-in rod 25 to move toward the direction of the top holding plate 23, so that the second spring 24 is compressed, and the plug-in rod 25 drives the top holding plate 23 to move. After the top holding plate 23 moves in the receiving groove 26, it blocks the edge of the valve 6, thereby stabilizing the positions of the second cleaning plate 11 and the first cleaning plate 7.

[0030] The exhaust gas discharged from the engine enters the interior of the muffler 1 through the air duct 2 and is discharged from the end of the muffler 1. The pulling of the pull wire 3 causes the rotating ring 4 to rotate, and the rotating ring 4 drives the rotating shaft 5 to swing to adjust the opening angle of the valve 6. When the exhaust gas passes through the air duct 2, the exhaust gas blows into the stress groove 15 on the surface of the stress block 14, so that the stress block 14 is stressed, and the exhaust gas can be blown away from the through hole 13, reducing the carbon deposits left in the stress groove 15. After the stress block 14 is stressed, it drives the second cleaning plate 11 to The second cleaning plate 11 drives the first cleaning plate 7 to move through the connecting rod 9. The ends of the second cleaning plate 11 and the first cleaning plate 7 are both provided with a telescopic plate 17. One end of the telescopic plate 17 located inside the second cleaning plate 11 and the first cleaning plate 7 is connected with a spring. The spring is supported on the surface of the telescopic plate 17 so that the telescopic plate 17 extends out of the second cleaning plate 11 and the first cleaning plate 7. When the first cleaning plate 7 and the second cleaning plate 11 move, the end of the telescopic plate 17 is supported inside the air guide pipe 2. A ball 18 is arranged, and the ball 18 is supported on the inner wall of the air guide tube 2, so that the telescopic plate 17 can always be supported on the inner wall of the air guide tube 2, and the carbon deposits on the entire surface of the air guide tube 2 can be cleaned. When the second cleaning plate 11 moves to the end of the valve 6, the force-bearing plate 22 in the force-bearing groove 15 is driven by the force to drive the plug-in rod 25 to move in the direction of the supporting plate 23, so that the second spring 24 is compressed, and the plug-in rod 25 drives the supporting plate 23 to move. After the supporting plate 23 moves in the receiving groove 26, it blocks the edge of the valve 6, which plays a role in stabilizing the first cleaning plate 11. Due to the position of the second cleaning plate 11 and the first cleaning plate 7, when the exhaust gas does not flow in the air duct 2, the top holding plate 23 is retracted into the receiving groove 26 under the pull of the plug-in rod 25, and when the first cleaning plate 7, the second cleaning plate 11 and the telescopic plate 17 move on the surface of the valve 6, the first cleaning plate 7, the second cleaning plate 11 and the telescopic plate 17 will scrape off the carbon deposits remaining on the surface of the valve 6, and when the exhaust gas does not flow in the air duct 2, the first cleaning plate 7 and the second cleaning plate 11 are pulled back to their initial positions by the first spring 20.

[0031] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. An engine muffler with a built-in exhaust valve, characterized in that: include: A silencer pipe (1), an air guide pipe (2) being fixed to an end of the silencer pipe (1), and the interior of the silencer pipe (1) being in communication with the interior of the air guide pipe (2); A rotating shaft (5), a valve (6) is arranged on the surface of the rotating shaft (5), a first cleaning plate (7) and a second cleaning plate (11) are arranged on the surface of the valve (6), a connecting rod (9) is fixed between the first cleaning plate (7) and the second cleaning plate (11), a limiting tube (10) is arranged on the surface of the valve (6), and a limiting rod (8) is arranged between the first cleaning plate (7) and the second cleaning plate (11); and A force bearing block (14) is provided with a through hole (13) on the surface of the force bearing block (14), and a force bearing plate (22) is provided inside the force bearing block (14).

2. The engine muffler with a built-in exhaust valve according to claim 1, characterized in that: The surface of the air guide tube (2) is provided with a rotating ring (4), and the rotating ring (4) can rotate on the surface of the air guide tube (2). A pull wire (3) is wound around the surface of the rotating ring (4), and the pull wire (3) is pulled to rotate the rotating ring (4). The rotating ring (4) is connected to a rotating shaft (5), and the rotating shaft (5) rotates along with the rotating ring (4). The rotating shaft (5) is located inside the air guide tube (2), and the valve (6) swings along with the rotation of the rotating shaft (5).

3. The engine muffler with a built-in exhaust valve according to claim 2, characterized in that: The surface of the rotating shaft (5) is provided with a slot (12), an extension plate (21) is fixed in the slot (12), a limiting rod (8) is inserted into the interior of the extension plate (21), the limiting rod (8) is movable inside the extension plate (21), an extension ring (19) is fixed to the surface of the limiting rod (8), a first spring (20) is arranged outside the limiting rod (8), one end of the first spring (20) is connected to the surface of the extension ring (19), and the other end of the first spring (20) is connected to the surface of the extension plate (21), and the first spring (20) has a thrust on the extension ring (19), so that the extension ring (19) is away from the surface of the extension plate (21).

4. The engine muffler with a built-in exhaust valve according to claim 3, characterized in that: The connecting rod (9) is inserted into the interior of the limiting tube (10), and the connecting rod (9) can move inside the limiting tube (10). The first cleaning plate (7) moves along with the connecting rod (9), and the second cleaning plate (11) moves along with the connecting rod (9). The ends of the first cleaning plate (7) and the second cleaning plate (11) are both inserted with telescopic plates (17), and the telescopic plates (17) can be telescoped inside the first cleaning plate (7) and the second cleaning plate (11). The first cleaning plate (7) and the second cleaning plate (11) are provided with springs inside, and the springs connect the ends of the telescopic plates (17) and the interior of the second cleaning plate (11). The springs inside the second cleaning plate (11) and the first cleaning plate (7) have a thrust on the telescopic plates (17), so that the telescopic plates (17) extend outside the first cleaning plates (7) and the second cleaning plates (11).

5. The engine muffler with a built-in exhaust valve according to claim 4, characterized in that: A ball (18) is provided at the end of the telescopic plate (17), and the ball (18) can roll on the end of the telescopic plate (17). A fixing rod (16) is fixed to the surface of the second cleaning plate (11), and a force-bearing block (14) is fixed to the end of the fixing rod (16). A force-bearing groove (15) is provided on the surface of the force-bearing block (14), and a through hole (13) is provided on the surface of the force-bearing block (14). The through holes (13) are provided in a plurality of groups, and the through holes (13) are communicated with the inside of the force-bearing groove (15).

6. The engine muffler with a built-in exhaust valve according to claim 5, characterized in that: A force-bearing plate (22) is arranged inside the force-bearing groove (15). The force-bearing plate (22) can move in the force-bearing groove (15). A plug-in rod (25) is fixed on the surface of the force-bearing plate (22). The other end of the plug-in rod (25) is connected to a top holding plate (23). The top holding plate (23) moves along with the plug-in rod (25). A second spring (24) is arranged outside the plug-in rod (25). One end of the second spring (24) is connected to the surface of the force-bearing plate (22), and the other end of the second spring (24) is connected to the inner wall of the force-bearing groove (15). The second spring (24) has a thrust on the force-bearing plate (22), so that the force-bearing plate (22) moves away from the top holding plate (23).

7. The engine muffler with a built-in exhaust valve according to claim 6, characterized in that: A receiving groove (26) is provided on the surface of the force-bearing block (14), the supporting plate (23) is located in the receiving groove (26), and the supporting plate (23) is movable in the receiving groove (26).

8. The engine muffler with a built-in exhaust valve according to claim 7, characterized in that: When the force-bearing block (14) moves to one side of the valve (6), the top holding plate (23) moves along with the force-bearing plate (22), and the top holding plate (23) is located at the edge of the valve (6) after moving.

9. The engine muffler with a built-in exhaust valve according to claim 8, characterized in that: Exhaust gas passes through the interior of the air guide pipe (2), and the exhaust gas enters the interior of the silencer pipe (1) through the valve (6) from the interior of the air guide pipe (2). When the exhaust gas passes through the interior of the air guide pipe (2), it is blown into the force-bearing groove (15) on the surface of the force-bearing block (14), so that the force-bearing block (14) is subjected to a thrust force.

10. The engine muffler with a built-in exhaust valve according to claim 9, characterized in that: When the exhaust gas in the air guide pipe (2) is blown into the stress groove (15) on the surface of the stress block (14), the exhaust gas is blown onto the surface of the stress plate (22) at the same time, and the exhaust gas pushes the stress plate (22) to move in the direction of the top holding plate (23), so that the stress plate (22) moves, and the stress plate (22) drives the top holding plate (23) to move via the plug-in rod (25).

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