Noise-reduction environment-friendly motorcycle silencer

Abstract

The utility model discloses a noise-reduction environment-friendly motorcycle silencer, which relates to the technical field of noise-reduction environment-friendly silencers and comprises a noise-reduction silencing component. The noise reduction and elimination assembly comprises a shell. Two exhaust ports are formed in one end of the shell; the end, away from the exhaust port, of the shell is hermetically connected with the connecting pipe through a buckle. A first disc, a second disc, a third disc and a fourth disc are sequentially arranged in the shell, and two through holes which are symmetrically formed are formed in the third disc; in the using process, the noise reduction and elimination assembly is connected with an engine through the connecting pipe, the end of the shell and the connecting pipe are sealed and fixed through a buckle, the situation of tail gas leakage is avoided, after tail gas enters the first cavity, tail gas transmission is effectively accelerated through the flow guide plate, and meanwhile the noise reduction and elimination effect is improved. And through the adsorption plates on the two sides of the guide plate, the effect of adsorbing large particles in the tail gas is achieved, and the situation that purification is not thorough when a catalytic purification reaction occurs between the tail gas and the catalytic coating is avoided.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of noise reduction and environmental protection mufflers, and specifically relates to a noise reduction and environmental protection type motorcycle muffler. Background Art

[0002] A noise reduction and environmental protection muffler is a device with excellent performance, aiming to effectively reduce the noise level while minimizing the adverse impact of exhaust gas on the environment; through precise acoustic calculations and simulations, the internal structure and size of the muffler are optimized so that it can effectively suppress noise in a specific frequency range; high-efficiency sound-absorbing materials are selected to fill the inside of the muffler; these materials have good sound-absorbing performance and can convert the energy of sound waves into heat energy or other forms of energy and be consumed.

[0003] Now, with the increasing popularity of motorcycles among young people, the purchase volume of motorcycles is increasing. The exhaust gas generated by motorcycles during driving can only be sold after meeting the emission standards. However, with the development of modified motorcycles, some people modify the exhaust pipe to improve the performance of the motorcycle, which may cause the exhaust gas emission of the motorcycle not to meet the standards. At the same time, the noise of the exhaust pipe cannot be effectively controlled; the harmful substances in the exhaust gas will have varying degrees of impact on the environment, and the noise of the modified exhaust pipe is relatively large, causing noise pollution to residents. Therefore, a noise reduction and environmental protection type motorcycle muffler is needed.

[0004] After retrieval, Chinese Patent Publication No. CN202223425955.0 discloses a motorcycle muffler; including: an outer shell; a catalyst installation pipe, the catalyst installation pipe is connected to a catalyst pipe; a sound insulation pipe, the catalyst installation pipe extends outward to form a sound insulation pipe; an exhaust pipe, the sound insulation pipe extends outward to form an exhaust pipe; a catalyst pipe, the catalyst pipe is connected to the catalyst installation pipe; wherein, the catalyst installation pipe, the sound insulation pipe and the exhaust pipe are integrally formed, and the outer shell is sleeved outside the catalyst installation pipe, the sound insulation pipe and the exhaust pipe.

[0005] When the muffler in the above patent is used, the exhaust pipe and the catalyst pipe are fixedly installed in a direct connection manner. After the exhaust gas is discharged from the exhaust pipe, it directly enters the catalyst pipe through the first through hole and the second through hole. The residence time of the exhaust gas is short, and the noise cannot be completely offset. In this way, the motorcycle will generate relatively large noise during driving, causing noise pollution to residents. Moreover, the muffler in the above patent cannot absorb larger particles in the exhaust gas. When the larger particles enter the catalyst pipe, it may cause incomplete reaction between the catalyst and the exhaust gas, failing to meet the exhaust gas emission standards. Content of the Utility Model

[0006] The purpose of the present utility model is to provide a noise-reducing and environmentally friendly motorcycle muffler. In this structure, the noise-reducing and sound-absorbing group is connected to the engine through a connecting pipe. The exhaust gas enters the first cavity inside the noise-reducing and sound-absorbing component, and is transmitted to the second cavity through the first expansion pipe. The exhaust gas inside the second cavity cancels each other out through the reflection of sound waves. The exhaust gas passes through the first cavity, the second cavity, the third cavity, the fourth cavity, and the exhaust gas cavity in sequence to achieve the effect of noise reduction. At the same time, an adsorption plate is arranged inside the outer shell to adsorb larger particles in the exhaust gas, and a buffer plate and a catalytic coating are also arranged. The catalytic coating reacts with harmful substances in the exhaust gas to ensure that the exhaust gas meets the emission standards, 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 noise-reducing and environmentally friendly motorcycle muffler, comprising a noise-reducing and sound-absorbing component; the noise-reducing and sound-absorbing component includes an outer shell; two exhaust ports are arranged at one end of the outer shell; the end of the outer shell far from the exhaust port is hermetically connected to the connecting pipe through a buckle;

[0009] A first disc, a second disc, a third disc, and a fourth disc are sequentially arranged inside the outer shell, and two through holes are symmetrically arranged on the third disc;

[0010] As a further technical solution of the present utility model, the end of the outer shell far from the exhaust port and the first disc form the first cavity; the space between the first disc and the second disc is the second cavity; a first expansion pipe is integrally arranged in the middle of the first disc;

[0011] As a further technical solution of the present utility model, the bottom of the second disc and the third disc is the third cavity, and two symmetrically arranged second expansion pipes penetrate through the second disc;

[0012] As a further technical solution of the present utility model, buffer plates are integrally arranged on the inner side walls of the second cavity and the third cavity;

[0013] As a further technical solution of the present utility model, the space between the third disc and the fourth disc is the fourth cavity; a catalytic coating is arranged on the inner wall of the fourth cavity; a third expansion pipe penetrates through the third disc; the end of the third expansion pipe far from the third disc penetrates through the fourth disc and extends into the exhaust gas cavity;

[0014] As a further technical solution of the present utility model, the exhaust gas cavity is communicated with the exhaust port at the end of the outer shell; a plurality of flow guiding plates are integrally arranged on the side wall of the first cavity of the outer shell; adsorption plates are fixedly installed on both sides of the plurality of flow guiding plates;

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] When in use, the noise reduction and silencing component of the present utility model is connected to the engine through a connecting pipe, and the end of the outer shell and the connecting pipe are hermetically fixed through a buckle to avoid tail gas leakage. After the tail gas enters the first cavity, the flow guiding plate effectively accelerates the transmission of the tail gas. At the same time, the adsorption plates on both sides of the flow guiding plate adsorb larger particles in the tail gas to avoid incomplete purification during the catalytic purification reaction between the tail gas and the catalytic coating;

[0017] In the present utility model, the tail gas in the first cavity is transmitted to the second cavity through the first expansion pipe on the first disc. The tail gas transmitted through the first expansion pipe reflects through the radio wave inside the second cavity to achieve mutual cancellation of noises. Then the tail gas successively passes through the third cavity, the fourth cavity and the tail gas cavity;

[0018] In the present utility model, when the tail gas passes through the second cavity and the third cavity, the buffer plate effectively buffers the noise and accelerates the silencing effect. After the tail gas enters the fourth cavity, a chemical reaction occurs with the catalytic coating to purify the tail gas and ensure that the tail gas meets the emission standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.

[0020] Figure 2 is in the present utility model Figure 1 Another perspective structural schematic diagram.

[0021] Figure 3 is in the present utility model Figure 1 Internal structural schematic diagram of the outer shell.

[0022] Figure 4 is in the present utility model Figure 3 Side view.

[0023] Figure 5 is in the present utility model Figure 3 Another perspective structural schematic diagram.

[0024] Figure 6 is in the present utility model Figure 5 Enlarged partial structural view of part A.

[0025] In the figure: 1 - connecting pipe, 2 - buckle, 3 - noise reduction and silencing component, 30 - housing, 31 - exhaust port, 32 - deflector, 33 - first disc, 34 - first expansion pipe, 35 - second disc, 36 - second expansion pipe, 37 - third disc, 370 - through hole, 38 - catalytic coating, 39 - buffer plate, 310 - fourth disc, 311 - third expansion pipe, 312 - first cavity, 313 - second cavity, 314 - third cavity, 315 - fourth cavity, 316 - tail gas cavity, 317 - adsorption plate. Detailed implementation mode

[0026] 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.

[0027] Please refer to Figures 1-6 , in the embodiment of the present invention, a noise reduction and environmental protection type motorcycle muffler; including a noise reduction and silencing component 3; the noise reduction and silencing component 3 includes a housing 30; two exhaust ports 31 are arranged at one end of the housing 30; the end of the housing 30 far from the exhaust port 31 is hermetically connected to the connecting pipe 1 through a buckle 2;

[0028] A first disc 33, a second disc 35, a third disc 37 and a fourth disc 310 are sequentially arranged inside the housing 30, and two symmetrically arranged through holes 370 are opened on the third disc 37;

[0029] The first cavity 312 is formed between the first disc 33 and the end of the housing 30 far from the exhaust port 31; the second cavity 313 is formed between the first disc 33 and the second disc 35; a first expansion pipe 34 is integrally arranged in the middle of the first disc 33;

[0030] By adopting the above technical solutions, during use, the noise reduction and silencing component 3 is connected to the engine through the connecting pipe 1, and the end of the housing 30 and the connecting pipe 1 are hermetically fixed through the buckle 2 to avoid tail gas leakage. After the tail gas enters the first cavity 312, the deflector 32 effectively accelerates the transmission of the tail gas. At the same time, the adsorption plates 317 on both sides of the deflector 32 adsorb larger particles in the tail gas to avoid incomplete purification during the catalytic purification reaction between the tail gas and the catalytic coating;

[0031] In this embodiment, the bottom of the second disc 35 and the third disc 37 forms a third cavity 314, and two symmetric second expansion tubes 36 penetrate through the second disc 35;

[0032] Buffer plates 39 are integrally provided on the inner side walls inside the second cavity 313 and the third cavity 314.

[0033] By adopting the above technical solution, the tail gas in the first cavity 312 is transmitted to the second cavity 313 through the first expansion tube 34 on the first disc 33. The tail gas transmitted through the first expansion tube 34 undergoes mutual cancellation of noises through the reflection of radio waves inside the second cavity 313, and then the tail gas successively passes through the third cavity 314, the fourth cavity 315, and the tail gas cavity 316;

[0034] In this embodiment, the space between the third disc 37 and the fourth disc 310 is a fourth cavity 315; a catalytic coating 38 is provided on the inner wall of the fourth cavity 315; a third expansion tube 311 penetrates through the third disc 37; one end of the third expansion tube 311 away from the third disc 37 penetrates through the fourth disc 310 and extends into the tail gas cavity 316;

[0035] The tail gas cavity 316 is communicated with the exhaust port 31 at the end of the housing 30; a plurality of flow guiding plates 32 are integrally provided on the side wall of the first cavity 312 of the housing 30; adsorption plates 317 are fixedly installed on both sides of the plurality of flow guiding plates 32;

[0036] By adopting the above technical solution, when the tail gas passes through the second cavity 313 and the third cavity 314, the buffer plates 39 effectively buffer the noise and accelerate the noise elimination effect. After the tail gas enters the fourth cavity 315, a chemical reaction occurs with the catalytic coating 38 to purify the tail gas and ensure that the tail gas meets the emission standards.

[0037] The working principle of the present utility model is as follows: During use, the noise reduction and elimination component 3 is connected to the engine through the connecting pipe 1, and the end of the housing 30 and the connecting pipe 1 are sealed and fixed through the buckle 2 to prevent tail gas leakage. After the tail gas enters the first cavity 312, the flow guiding plates 32 effectively accelerate the transmission of the tail gas. At the same time, the adsorption plates 317 on both sides of the flow guiding plates 32 adsorb larger particles in the tail gas to avoid incomplete purification during the catalytic purification reaction between the tail gas and the catalytic coating;

[0038] The tail gas in the first cavity 312 is transmitted to the second cavity 313 through the first expansion tube 34 on the first disk 33. The tail gas transmitted through the first expansion tube 34 realizes the mutual cancellation of noises through the reflection of the radio waves inside the second cavity 313. Then the tail gas successively passes through the third cavity 314, the fourth cavity 315 and the tail gas cavity 316.

[0039] When the tail gas passes through the second cavity 313 and the third cavity 314, the buffer plate 39 effectively buffers the noise and accelerates the noise elimination effect. After the tail gas enters the fourth cavity 315, it undergoes a chemical reaction with the catalytic coating 38 to realize the purification treatment of the tail gas and ensure that the tail gas meets the emission standards.

[0040] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and 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.

[0041] 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 noise-reducing and environment-friendly motorcycle muffler, characterized by: The noise reduction and noise elimination component (3) comprises a housing (30); one end of the housing (30) is provided with two exhaust ports (31); one end of the housing (30) away from the exhaust ports (31) is sealedly connected to a connecting pipe (1) via a buckle (2); A first disc (33), a second disc (35), a third disc (37) and a fourth disc (310) are sequentially arranged inside the housing (30), wherein the third disc (37) is provided with two symmetrically arranged through holes (370).

2. The noise-reducing and environment-friendly motorcycle muffler according to claim 1, characterized in that: The first disc (33) and the end of the housing (30) away from the exhaust port (31) form a first cavity (312); the second cavity (313) is between the first disc (33) and the second disc (35); and a first expansion tube (34) is integrally provided in the middle of the first disc (33).

3. A noise-reducing and environment-friendly motorcycle muffler according to claim 2, characterized in that: The bottoms of the second disc (35) and the third disc (37) form a third cavity (314), wherein two symmetrical second expansion tubes (36) are arranged through the second disc (35).

4. The noise-reducing and environment-friendly motorcycle muffler according to claim 3 is characterized by: A buffer plate (39) is integrally provided on the side walls inside the second cavity (313) and the third cavity (314).

5. The noise-reducing and environment-friendly motorcycle muffler according to claim 4 is characterized by: A fourth cavity (315) is provided between the third disc (37) and the fourth disc (310); a catalytic coating (38) is provided on the inner wall of the fourth cavity (315); a third expansion tube (311) is provided through the third disc (37); an end of the third expansion tube (311) away from the third disc (37) passes through the fourth disc (310) and extends into the exhaust cavity (316).

6. The noise-reducing and environment-friendly motorcycle muffler according to claim 5, characterized in that: The exhaust cavity (316) is in communication with the exhaust port (31) at the end of the outer shell (30); a plurality of guide plates (32) are integrally provided on the side wall of the first cavity (312) of the outer shell (30); and adsorption plates (317) are fixedly mounted on both sides of the plurality of guide plates (32).

Images