Motorcycle silencer for catalyzing and purifying tail gas

Abstract

The utility model discloses a motorcycle silencer for catalyzing and purifying tail gas, which relates to the technical field of silencers and comprises a silencer. The silencer comprises a shell; a plurality of cavities are formed in the shell, and a first disc is arranged between the first cavity and the second cavity; a first transmission pipe is integrally arranged on the first disc; the first transmission pipe is far away from the first disc, penetrates through the second disc between the second cavity and the third cavity and extends into the third cavity, and a second transmission pipe penetrates through the bottom of the second disc. The third transmission pipe penetrates through the third cavity and the third disc and extends to the fourth cavity; tail gas in the first cavity is conveyed into the third cavity through the first conveying pipe, offsetting of the tail gas in the third cavity is achieved again, then the tail gas enters the second cavity through the second conveying pipe for noise offsetting, and sound absorption cotton is further arranged on the inner wall of the second cavity and the inner wall of the third cavity, so that the noise reduction effect is effectively improved, and the noise reduction effect is improved. The fourth cavity is connected with a tail gas pipe, and tail gas emission is achieved.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of mufflers, and particularly relates to a motorcycle muffler for catalytically purifying tail gas. Background Art

[0002] A motorcycle muffler is a very important component in the motorcycle exhaust system, and a motorcycle muffler with the function of catalytically purifying tail gas plays a key role in environmental protection; through a special structure and catalyst inside, this kind of muffler can effectively reduce the emission of harmful substances in motorcycle tail gas; the high-temperature tail gas is in full contact with the catalyst, triggering a series of chemical reactions, so as to realize the conversion and purification of harmful substances.

[0003] Currently, the mufflers at the rear of motorcycles usually adopt a straight-through exhaust structure. In this way, during the riding process, the tail gas generated after the fuel combustion inside the engine stays in the muffler for a relatively short time. When driving at high speed, it may cause insufficient purification in the muffler and also result in a relatively loud noise of the motorcycle.

[0004] After retrieval, Chinese Patent Publication No. CN202022577660.X discloses a motorcycle muffler; it includes a muffler pipe body, a first expansion chamber device, a second expansion chamber device, a tail gas purification device and a tail gas emission device. The first expansion chamber device is fixedly connected to the left side of the inner cavity of the muffler pipe body, the second expansion chamber device is fixedly connected to the middle of the inner cavity of the muffler pipe body, the tail gas purification device is fixedly connected to the right side of the inner cavity of the muffler pipe body, and the tail gas emission device is inserted into the right side of the inner cavity of the muffler pipe body and is located on the right side of the tail gas purification device;

[0005] When the muffler in the above patent works, the muffler is directly installed on the exhaust pipe. During the driving process, muffling treatment is carried out first, and a straight-through arrangement is adopted between the expansion chamber devices. In this way, the tail gas stays in the two expansion chamber devices for a relatively short time, and when the tail gas passes through, sufficient muffling treatment of the tail gas cannot be carried out. Moreover, the essence catalytic device in the above patent is installed at the end of the muffling device. In this way, when there is a large amount of tail gas in the front section during catalytic purification, it may cause insufficient purification in the position and directly pass through the tail gas purification device into the tail gas emission device. When the tail gas is not purified sufficiently, it will cause the tail gas not to meet the emission standards and cause certain pollution to the environment. Content of the Utility Model

[0006] The purpose of the present utility model is to provide a motorcycle muffler for catalytically purifying exhaust gas. In this structure, a three-way catalytic converter is connected to the engine to fully catalytically purify the exhaust gas discharged from the engine. After the catalytic purification process, the exhaust gas is transmitted to the muffler through a connecting component. The exhaust gas sequentially enters multiple cavities inside the outer shell to achieve exhaust gas noise reduction. At the same time, sound-absorbing cotton is provided on the inner side walls of the second cavity and the third cavity to effectively ensure the sound-absorbing effect, so as to solve the problems in the above-mentioned background technology.

[0007] To achieve the above purpose, the present utility model provides the following technical solutions:

[0008] A motorcycle muffler for catalytically purifying exhaust gas, comprising a muffler; the muffler includes an outer shell; a plurality of cavities are provided inside the outer shell, and a first disc is provided between the first cavity and the second cavity; a first transmission pipe is integrally provided on the first disc; the first transmission pipe extends away from the first disc through a second disc between the second cavity and the third cavity and extends into the third cavity, and a second transmission pipe is provided through the bottom of the second disc; a third transmission pipe is also integrally provided on the second disc; the third transmission pipe extends through the third cavity and a third disc and extends into the fourth cavity;

[0009] As a further technical solution of the present utility model, sound-absorbing cotton is integrally provided on the side walls of the second cavity and the third cavity; one end of the outer shell away from the first cavity is integrally provided with an exhaust pipe.

[0010] As a further technical solution of the present utility model, one end of the outer shell away from the exhaust pipe is fixedly installed with a connecting component; the connecting component includes a connecting pipe; one end of the connecting pipe extends into the first cavity inside the outer shell.

[0011] As a further technical solution of the present utility model, a tail gas cover is detachably installed at one end of the connecting pipe located in the first cavity, and a plurality of exhaust holes are provided on the tail gas cover.

[0012] As a further technical solution of the present utility model, one end of the connecting pipe away from the tail gas cover is fixedly installed with the end of the three-way catalytic converter through bolts; one end of the three-way catalytic converter away from the connecting pipe is connected to the cylinder block of the engine.

[0013] As a further technical solution of the present utility model, through holes are provided at the ends of the first transmission pipe, the second transmission pipe, and the third transmission pipe.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] The utility model connects one end of the three-way catalytic converter to the engine when the motorcycle is in use, so that when the motorcycle is running, the exhaust gas generated enters the three-way catalytic converter, and the carbon monoxide in the exhaust gas is converted into carbon dioxide and the nitrogen oxide is converted into nitrogen through the structure and catalyst inside the three-way catalytic converter, thereby effectively ensuring the exhaust gas emission standard;

[0016] In the utility model, one end of the three-way catalytic converter away from the engine is connected to the connecting assembly, and the purified exhaust gas enters the first cavity inside the shell through the connecting pipe, and the exhaust hole opened on the exhaust cover effectively realizes the exhaust gas discharge area, realizes the mutual collision inside the first cavity to achieve the cancellation of the noise, and effectively ensures the noise reduction effect of the muffler;

[0017] In the utility model, the exhaust gas in the first cavity is transmitted to the third cavity through the first transmission pipe, and the exhaust gas in the third cavity is again offset, and then enters the second cavity through the second transmission pipe to offset the noise, wherein sound-absorbing cotton is further arranged on the inner walls of the second cavity and the third cavity, thereby effectively increasing the noise reduction effect, and the exhaust gas in the second cavity is transmitted to the fourth cavity through the third transmission pipe, and the end of the fourth cavity is connected to the exhaust pipe to realize the exhaust gas discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0019] Figure 2 This utility model Figure 1 Bottom view of the bottom structure.

[0020] Figure 3 This utility model Figure 1 Schematic diagram of the splitting.

[0021] Figure 4 This utility model Figure 3 Schematic diagram of the internal structure of the muffler.

[0022] Figure 5 This utility model Figure 3 Side view of the muffler.

[0023] Figure 6 This utility model Figure 5 AA section view.

[0024] In the figure: 1 - Three-way catalytic converter, 2 - Connection component, 20 - Takeover pipe, 21 - Tail gas hood, 22 - Exhaust hole, 3 - Muffler, 30 - Outer shell, 31 - Tail pipe, 32 - First disc, 33 - Second disc, 34 - Third disc, 35 - First transfer pipe, 36 - Second transfer pipe, 37 - Third transfer pipe, 38 - Sound-absorbing cotton, 39 - First cavity, 310 - Second cavity, 311 - Third cavity, 312 - Fourth cavity, 4 - Bolt. Detailed implementation mode

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figures 1-6 , in the embodiment of the present invention, a motorcycle muffler for catalytically purifying tail gas; including a muffler 3; the muffler 3 includes an outer shell 30; a plurality of cavities are arranged inside the outer shell 30, and a first disc 32 is arranged between the first cavity 39 and the second cavity 310; a first transfer pipe 35 is integrally arranged on the first disc 32; the first transfer pipe 35 extends into the third cavity 311 away from the first disc 32 through the second disc 33 between the second cavity 310 and the third cavity 311, and a second transfer pipe 36 is arranged through the bottom of the second disc 33; a third transfer pipe 37 is also integrally arranged on the second disc 33; the third transfer pipe 37 extends into the fourth cavity 312 through the third cavity 311 and the third disc 34;

[0027] Sound-absorbing cotton 38 is integrally arranged on the side walls of the second cavity 310 and the third cavity 311; one end of the outer shell 30 away from the first cavity 39 is integrally arranged with the tail pipe 31;

[0028] By adopting the above technical solutions, when in use, one end of the three-way catalytic converter 1 is connected to the engine. In this way, when the motorcycle is running, the generated waste gas enters the interior of the three-way catalytic converter 1, and through the internal structure and catalyst of the three-way catalytic converter 1, carbon monoxide in the tail gas is converted into carbon dioxide, and nitrogen oxides are converted into nitrogen, effectively ensuring the standard of tail gas emission;

[0029] In this embodiment, one end of the outer shell 30 away from the tail pipe 31 is fixedly installed with the connection component 2; the connection component 2 includes a takeover pipe 20; one end of the takeover pipe 20 extends into the first cavity 39 inside the outer shell 30.

[0030] In this embodiment, one end of the connecting pipe 20 located in the first cavity 39 is detachably installed with an exhaust gas hood 21, and a plurality of exhaust holes 22 are formed in the exhaust gas hood 21;

[0031] By adopting the above technical solution, one end of the three-way catalytic converter 1 away from the engine is connected to the connecting component 2, and the purified exhaust gas enters the first cavity 39 inside the outer shell 30 through the connecting pipe 20. Through the exhaust holes 22 formed in the exhaust gas hood 21, the area of exhaust gas emission is effectively realized, and the exhaust gas collides with each other inside the first cavity 39 to cancel out the noise, effectively ensuring the noise reduction effect of the muffler 3;

[0032] In this embodiment, one end of the connecting pipe 20 away from the exhaust gas hood 21 is fixedly installed with the end of the three-way catalytic converter 1 through a bolt 4; one end of the three-way catalytic converter 1 away from the connecting pipe 20 is connected to the cylinder block of the engine;

[0033] Through holes are formed at the ends of the first transfer pipe 35, the second transfer pipe 36, and the third transfer pipe 37;

[0034] By adopting the above technical solution, the exhaust gas in the first cavity 39 is transferred to the third cavity 311 through the first transfer pipe 35, and the exhaust gas is offset again inside the third cavity 311, and then enters the second cavity 310 through the second transfer pipe 36 to cancel the noise. Sound-absorbing cotton 38 is also provided on the inner walls of the second cavity 310 and the third cavity 311, thereby effectively increasing the noise reduction effect. Then, the exhaust gas in the second cavity 310 is transferred to the fourth cavity 312 through the third transfer pipe 37, and the end of the fourth cavity 312 is connected to the tail pipe 31 to realize the emission of exhaust gas.

[0035] The working principle of the present utility model is: during use, one end of the three-way catalytic converter 1 is connected to the engine. In this way, when the motorcycle is running, the generated waste gas enters the three-way catalytic converter 1. Through the structure and catalyst inside the three-way catalytic converter 1, carbon monoxide in the exhaust gas is converted into carbon dioxide, and nitrogen oxides are converted into nitrogen, effectively ensuring the standard of exhaust gas emission.

[0036] One end of the three-way catalytic converter 1 away from the engine is connected to the connecting component 2, and the purified exhaust gas enters the first cavity 39 inside the outer shell 30 through the connecting pipe 20. Through the exhaust holes 22 formed in the exhaust gas hood 21, the area of exhaust gas emission is effectively realized, and the exhaust gas collides with each other inside the first cavity 39 to cancel out the noise, effectively ensuring the noise reduction effect of the muffler 3;

[0037] The tail gas in the first cavity 39 is transmitted to the third cavity 311 through the first transmission pipe 35, and the cancellation of the tail gas inside the third cavity 311 is realized again. Then, it enters the second cavity 310 through the second transmission pipe 36 for noise cancellation. Sound-absorbing cotton 38 is also provided on the inner walls of the second cavity 310 and the third cavity 311, thereby effectively enhancing the noise reduction effect. Then, the tail gas inside the second cavity 310 is transmitted to the fourth cavity 312 through the third transmission pipe 37, and the end of the fourth cavity 312 is connected to the tail gas pipe 31 to realize the emission of the tail gas.

[0038] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0039] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A motorcycle muffler for catalytically purifying exhaust gas, characterized in that: The muffler (3) comprises a shell (30); a plurality of cavities are arranged inside the shell (30), wherein a first disc (32) is arranged between a first cavity (39) and a second cavity (310); a first transmission pipe (35) is integrally arranged on the first disc (32); the first transmission pipe (35) is away from the first disc (32), passes through a second disc (33) between the second cavity (310) and a third cavity (311), and extends into the third cavity (311); a second transmission pipe (36) is passed through the bottom of the second disc (33); a third transmission pipe (37) is also integrally arranged on the second disc (33); the third transmission pipe (37) passes through the third cavity (311) and the third disc (34), and extends into the fourth cavity (312).

2. A motorcycle muffler for catalytically purifying exhaust gas according to claim 1, characterized in that: Sound-absorbing cotton (38) is integrally provided on the side walls of the second cavity (310) and the third cavity (311); and the end of the housing (30) away from the first cavity (39) is integrally provided with the tail pipe (31).

3. A motorcycle muffler for catalytically purifying exhaust gas according to claim 2, characterized in that: One end of the housing (30) away from the exhaust pipe (31) is fixedly mounted to the connection assembly (2); the connection assembly (2) comprises a connecting pipe (20); one end of the connecting pipe (20) extends into a first cavity (39) inside the housing (30).

4. A motorcycle muffler for catalytically purifying exhaust gas according to claim 3, characterized in that: An exhaust cover (21) is detachably mounted on one end of the connecting pipe (20) located in the first cavity (39), and a plurality of exhaust holes (22) are provided on the exhaust cover (21).

5. A motorcycle muffler for catalytically purifying exhaust gas according to claim 4, characterized in that: The end of the connecting pipe (20) away from the exhaust cover (21) is fixedly mounted to the end of the three-way catalytic converter (1) via a bolt (4); the end of the three-way catalytic converter (1) away from the connecting pipe (20) is connected to the cylinder body of the engine.

6. The motorcycle muffler for catalytically purifying exhaust gas according to claim 1, characterized in that: The ends of the first transmission tube (35), the second transmission tube (36) and the third transmission tube (37) are all provided with through holes.

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