Noise reduction structure of three-way catalyst

Abstract

The utility model relates to the technical field of three-way catalytic converters, in particular to a three-way catalytic converter noise reduction structure which comprises a three-way catalytic converter and a main noise reduction sleeve, the main noise reduction sleeve is arranged on the surface of the three-way catalytic converter in a sleeved mode, rubber noise reduction plates are arranged on the left side and the right side of the main noise reduction sleeve respectively, pipe sleeves are arranged at the ends of the two rubber noise reduction plates respectively, and the pipe sleeves are connected with the main noise reduction sleeve. The two pipe sleeves are arranged outside pipes at the two ends of the three-way catalytic converter in a sleeving mode, intervals can be formed between the trapezoid separation frames and the triangular separation frames in the main noise reduction sleeve and the three-way catalytic converter, so that sound transmission is reduced, the noise reduction effect can be achieved through the first sound insulation cotton, and the noise reduction effect can be achieved through the second sound insulation faces in the pipe sleeves. Meanwhile, the multiple special-shaped sound insulation grooves and the round hole sound insulation grooves are formed, sound transmission can be further reduced, various noise reduction structures are adopted, different structures of the three-way catalyst are subjected to different noise reduction, and therefore the noise reduction effect can be effectively achieved, and the noise reduction performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of three-way catalytic converter technology, and in particular to a noise reduction structure for a three-way catalytic converter. Background Technology

[0002] The three-way catalytic converter plays a crucial role in automotive exhaust treatment. However, it often generates significant noise during operation, which not only affects driving and passenger comfort but may also contribute to noise pollution.

[0003] Traditional noise reduction measures for three-way catalytic converters are relatively simple, usually just wrapping them with some sound insulation materials. They lack differentiated noise reduction designs for different structures of three-way catalytic converters, resulting in unsatisfactory noise reduction effects and an inability to effectively reduce noise.

[0004] Moreover, existing noise reduction structures are inconvenient to install and maintain. For example, some noise reduction components are fixed and integrated, making them difficult to replace individually. Once damaged or with reduced noise reduction performance, the entire structure needs to be replaced, increasing usage costs and maintenance difficulty.

[0005] Furthermore, the installation method for noise reduction components connected to the three-way catalytic converter is not flexible or convenient enough, and they cannot be quickly disassembled and installed, which affects the efficiency of maintenance and replacement. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this invention provides a noise reduction structure for a three-way catalytic converter.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A noise reduction structure for a three-way catalytic converter includes a three-way catalytic converter and a main noise reduction sleeve. The main noise reduction sleeve is fitted onto the surface of the three-way catalytic converter. Rubber noise reduction plates are provided on both the left and right sides of the main noise reduction sleeve. Tube sleeves are provided at the ends of the two rubber noise reduction plates. The two tube sleeves are fitted over the tubes at both ends of the three-way catalytic converter. Threaded rods are fixedly installed on the side ends of the two rubber noise reduction plates. The bottom of each tube sleeve is rotatably fitted over the threaded rods. A first sound insulation cotton is fixedly installed on the inner wall of the main noise reduction sleeve. At least two trapezoidal partitions are fixedly installed at equal intervals on the inner walls of the upper and lower sides of the first sound insulation cotton.

[0011] Preferably, the inner walls on both sides of the main noise reduction sleeve are provided with grooves, each of the rubber noise reduction plates is installed inside the grooves, at least two triangular partitions are fixedly installed at equal intervals on the inner walls on both sides of the first sound insulation cotton, a rubber insert is fixedly installed on the top of each tube sleeve, and a magnetic block is fixedly installed on the side wall of each rubber insert facing the three-way catalytic converter.

[0012] Preferably, a rubber block is fixedly installed on the side wall of each rubber insert facing outwards from the three-way catalytic converter, a second sound insulation surface is fixedly installed on the inner wall of each tube sleeve, and at least two irregular sound insulation grooves and round hole sound insulation grooves are opened on the inner wall of each second sound insulation surface, and the irregular sound insulation grooves and round hole sound insulation grooves are staggered, a threaded sleeve is installed at the end of each threaded rod through threads, filling cotton is fixedly installed at the bottom of each tube sleeve, and two fixing brackets are provided below the main noise reduction sleeve.

[0013] (III) Beneficial Effects

[0014] 1. When the three-way catalytic converter is operating, the multiple trapezoidal and triangular partitions inside the main noise reduction sleeve can form gaps between the three-way catalytic converter and the main noise reduction sleeve, thereby reducing sound transmission. The first sound insulation cotton can play a noise reduction role, and the second sound insulation surface inside the multiple sleeves can also play a noise reduction role. At the same time, the opening of multiple irregular sound insulation grooves and round hole sound insulation grooves can further reduce sound transmission. By adopting multiple noise reduction structures and applying different noise reduction methods to different structures of the three-way catalytic converter, the noise reduction effect can be effectively achieved, and the noise reduction performance can be improved.

[0015] 2. Rotate and remove the threaded sleeve at the end of the threaded rod, insert the sleeve into the outside of the threaded rod, and then fix it with the threaded sleeve. Then rotate multiple sleeves around the two ends of the three-way catalytic converter. The tops of the two sleeves on the same side will be magnetically attracted to each other through the magnetic blocks. At the same time, the rubber blocks outside the rubber inserts can facilitate the user to push and install them. When the two sleeves are rotated and fitted, the filling cotton at the bottom of the sleeves can fill the gap between them. By designing the sleeves to be detachable, they can be easily replaced and installed independently. Attached Figure Description

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0017] Figure 1 This is a structural diagram of the practical three-way catalytic converter;

[0018] Figure 2 This is a structural diagram of the main noise reduction sleeve of this utility model;

[0019] Figure 3This is a structural diagram of the practical trapezoidal divider;

[0020] Figure 4 This is a structural diagram of the utility tube sleeve;

[0021] Figure 5 For practical purposes Figure 4 Enlarged structural diagram at point A;

[0022] Figure 6 This is a structural diagram of the threaded rod used in this application.

[0023] Legend: 1. Three-way catalytic converter; 11. Main noise reduction sleeve; 12. Fixing bracket; 13. Threaded rod; 14. Threaded sleeve; 15. Trapezoidal partition bracket; 16. First sound insulation cotton; 17. Triangular partition bracket; 18. Groove; 19. Rubber noise reduction plate; 2. Tube sleeve; 21. Rubber insert; 22. Magnetic block; 23. Rubber block; 24. Irregular sound insulation groove; 25. Round hole sound insulation groove; 26. Second sound insulation surface; 27. Filling cotton. Detailed Implementation

[0024] like Figures 1-6 As shown, the overall concept of the technical solution in this application embodiment is as follows:

[0025] To address the problems existing in the prior art, this utility model provides a noise reduction structure for a three-way catalytic converter, including a three-way catalytic converter 1 and a main noise reduction sleeve 11. The main noise reduction sleeve 11 is fitted onto the surface of the three-way catalytic converter 1. Rubber noise reduction plates 19 are provided on both the left and right sides of the main noise reduction sleeve 11. Tube sleeves 2 are provided at the ends of the two rubber noise reduction plates 19. The two tube sleeves 2 are fitted over the tubes at both ends of the three-way catalytic converter 1. Threaded rods 13 are fixedly installed on the side ends of the two rubber noise reduction plates 19. The bottom of each tube sleeve 2 is rotatably fitted over the threaded rod 13. The two rubber noise reduction plates 19 are located in the groove 18. At this time, the inner wall of the main noise reduction sleeve 11... A trapezoidal partition 15 and a triangular partition 17 are attached to the outer wall of the three-way catalytic converter 1. Then, multiple tube sleeves 2 are fitted over the two end tubes of the three-way catalytic converter 1. When the three-way catalytic converter 1 is operating, the multiple trapezoidal partitions 15 and triangular partitions 17 inside the main noise reduction sleeve 11 can form a gap with the three-way catalytic converter 1, thereby reducing the transmission of sound. The first sound insulation cotton 16 can play a noise reduction role. The second sound insulation surface 26 inside the multiple tube sleeves 2 can play a noise reduction role. The first sound insulation cotton 16 is fixedly installed on the inner wall of the main noise reduction sleeve 11. At least two trapezoidal partitions 15 are fixedly installed at equal intervals on the inner walls of the upper and lower sides of the first sound insulation cotton 16.

[0026] The inner walls of the left and right sides of the main noise reduction sleeve 11 are provided with grooves 18, and each rubber noise reduction plate 19 is installed inside the groove 18. At least two triangular partitions 17 are fixedly installed at equal intervals on the inner walls of the left and right sides of the first sound insulation cotton 16. A rubber insert 21 is fixedly installed on the top of each tube sleeve 2. A magnetic block 22 is fixedly installed on the side wall of each rubber insert 21 facing the three-way catalytic converter 1. Then, multiple tube sleeves 2 are rotated and fitted onto the outside of the two tubes at both ends of the three-way catalytic converter 1. The tops of two tube sleeves 2 on the same side will be magnetically attracted to each other through the magnetic block 22. At the same time, the rubber blocks 23 outside the rubber inserts 21 can be easily pushed and installed by the user. The 2-rotating sleeve is provided with a filling cotton 27 at the bottom of the sleeve 2 to fill the gap between the two. Each rubber plug 21 facing the outside of the three-way catalytic converter 1 has a rubber block 23 fixedly installed on its side wall. Each inner wall of the sleeve 2 has a second sound insulation surface 26 fixedly installed. Each inner wall of the second sound insulation surface 26 has at least two irregular sound insulation grooves 24 and round hole sound insulation grooves 25, and the irregular sound insulation grooves 24 and round hole sound insulation grooves 25 are staggered. Each threaded rod 13 has a threaded sleeve 14 installed at its end by thread. Each bottom of the sleeve 2 has a filling cotton 27 fixedly installed. Two fixing brackets 12 are provided below the main noise reduction sleeve 11.

[0027] Working principle:

[0028] First, when installing the main noise reduction sleeve 11 outside the three-way catalytic converter 1, open the two fixing brackets 12 below the main noise reduction sleeve 11. The two fixing brackets 12 are connected by bolts. Unfold both ends of the main noise reduction sleeve 11 and put the two rubber noise reduction plates 19 on the outside of the two end tubes of the three-way catalytic converter 1. Then, wrap the main noise reduction sleeve 11 around the outside of the three-way catalytic converter 1. At the same time, the main noise reduction sleeve 11 wraps around the two rubber noise reduction plates 19. The two rubber noise reduction plates 19 are located in the groove 18. At this time, the multiple trapezoidal partitions 15 and triangular partitions 17 on the inner wall of the main noise reduction sleeve 11 are in contact with the outer wall of the three-way catalytic converter 1. Then, put the multiple tube sleeves 2 on... Outside the two end tubes of the three-way catalytic converter 1, when the three-way catalytic converter 1 is operating, multiple trapezoidal partitions 15 and triangular partitions 17 inside the main noise reduction sleeve 11 can form a gap with the three-way catalytic converter 1, thereby reducing the transmission of sound. The first sound insulation cotton 16 can play a noise reduction role, and the second sound insulation surface 26 inside the multiple tube sleeves 2 can play a noise reduction role. At the same time, the opening of multiple irregular sound insulation grooves 24 and round hole sound insulation grooves 25 can further reduce the transmission of sound. By adopting multiple noise reduction structures and simultaneously performing different noise reduction on different structures of the three-way catalytic converter 1, the noise reduction effect can be effectively achieved and the noise reduction performance can be improved.

[0029] The second step is to rotate and remove the threaded sleeve 14 at the end of the threaded rod 13 when installing the sleeve 2. Insert the sleeve 2 into the threaded rod 13 and fix it with the threaded sleeve 14. Then, rotate multiple sleeves 2 onto the tubes at both ends of the three-way catalytic converter 1. The tops of the two sleeves 2 on the same side will be magnetically attracted to each other through the magnetic block 22. At the same time, the rubber block 23 outside the rubber insert 21 can be easily pushed and installed by the user. When the two sleeves 2 are rotated and installed, the filling cotton 27 at the bottom of the sleeve 2 can fill the gap between them. By designing the sleeve 2 to be detachable, it can be easily replaced and installed independently.

[0030] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A noise reduction structure for a three-way catalytic converter, comprising a three-way catalytic converter (1) and a main noise reduction sleeve (11), characterized in that, The main noise reduction sleeve (11) is fitted on the surface of the three-way catalytic converter (1). Rubber noise reduction plates (19) are provided on both the left and right sides of the main noise reduction sleeve (11). Tube sleeves (2) are provided at the ends of the two rubber noise reduction plates (19). The two tube sleeves (2) are fitted on the outside of the tubes at both ends of the three-way catalytic converter (1). Among them, threaded rods (13) are fixedly installed on the side ends of the two rubber noise reduction plates (19), and the bottom of each tube sleeve (2) is rotatably sleeved on the threaded rod (13). The inner wall of the main noise reduction sleeve (11) is fixedly installed with a first sound insulation cotton (16), and at least two trapezoidal partitions (15) are fixedly installed at equal intervals on the inner walls of the upper and lower sides of the first sound insulation cotton (16).

2. The noise reduction structure for a three-way catalytic converter as described in claim 1, characterized in that, The inner walls on both sides of the main noise reduction sleeve (11) are provided with grooves (18), and each of the rubber noise reduction plates (19) is installed inside the grooves (18).

3. The noise reduction structure for a three-way catalytic converter as described in claim 2, characterized in that, At least two triangular dividers (17) are fixedly installed at equal intervals on the inner walls of the left and right sides of the first sound insulation cotton (16).

4. The noise reduction structure for a three-way catalytic converter as described in claim 3, characterized in that, A rubber plug (21) is fixedly installed on the top of each of the tube sleeves (2), and a magnetic block (22) is fixedly installed on the side wall of each of the rubber plugs (21) facing the three-way catalytic converter (1).

5. The noise reduction structure for a three-way catalytic converter as described in claim 4, characterized in that, A rubber block (23) is fixedly installed on the side wall of each of the rubber inserts (21) facing the three-way catalytic converter (1), and a second sound insulation surface (26) is fixedly installed on the inner wall of each of the tube sleeves (2). At least two irregular sound insulation grooves (24) and round hole sound insulation grooves (25) are opened on the inner wall of each second sound insulation surface (26), and the irregular sound insulation grooves (24) and round hole sound insulation grooves (25) are staggered.

6. The noise reduction structure for a three-way catalytic converter as described in claim 5, characterized in that, Each of the threaded rods (13) has a threaded sleeve (14) installed at its end by thread, and each of the tube sleeves (2) has a filling cotton (27) fixedly installed at its bottom. Two fixing brackets (12) are provided below the main noise reduction sleeve (11).

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