Automobile catalytic silencer with double-layer sound insulation function

Abstract

The utility model discloses an automobile catalytic silencer with a double-layer sound insulation function, and relates to the technical field of automobile exhaust systems. The catalytic converter comprises a catalytic converter body and a silencer body, the catalytic converter body comprises a catalytic shell, a catalytic converter carrier is installed in the catalytic shell, and a heat insulation cover is arranged on the peripheral side of the catalytic converter carrier and is of a semi-circular-ring-shaped structure. The catalytic converter body and the silencer body are arranged, the through holes are formed in the peripheral side face of the connecting pipe, and the silencing cotton is arranged, so that the silencer body has the double-layer silencing and sound insulation effects, the catalytic silencing efficiency is improved, and the vehicle running quality is improved; the catalyst carrier is wrapped and separated in a semi-wrapping mode through the heat insulation cover and the heat insulation contact, the influence of heat of other components of a vehicle on the catalyst carrier is reduced, the catalyst carrier is fixed through screws, the structure is simple, fixing is convenient, the rubber contact face is adopted, and vibration and noise are not prone to being generated.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile exhaust systems, in particular to an automobile catalytic muffler with double-layer sound insulation. Background Art

[0002] The automobile catalytic converter is the most important external purification device installed in the automobile exhaust system. The automobile muffler is a component used to reduce the noise generated when the engine of a motor vehicle is working. Since the difference in the length of the two pipes is equal to half the wavelength of the sound waves emitted by the car, the two sound waves interfere and cancel each other out when superimposed, thereby reducing the sound intensity and reducing the sound, thereby achieving a silencing effect.

[0003] When the existing automobile catalyst is in use, it is necessary to enhance its noise reduction and heat insulation efficiency to increase the service life of the catalyst. Utility Model Content

[0004] The utility model aims to provide a double-layer sound-insulating automobile catalytic muffler to solve the problem that the existing automobile catalytic converter needs to enhance its silencing and heat insulation efficiency when in use, so as to increase the service life of the catalytic converter.

[0005] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0006] The utility model discloses a double-layer sound-insulating automobile catalytic muffler, comprising a catalytic converter body and a muffler body, wherein the catalytic converter body comprises a catalytic shell, a catalytic converter carrier is installed inside the catalytic shell, a heat insulation cover is arranged on the circumference of the catalytic converter carrier, the heat insulation cover is a semi-circular ring structure, the middle part and both sides of the inner side surface of the heat insulation cover are fixedly connected with raised heat insulation contacts, both ends of the heat insulation cover are fixedly connected with connecting blocks, one side surface of the connecting block is in contact with the inner wall of the catalytic shell, a screw is arranged inside the connecting block, one end of the screw is arranged in the catalytic shell and is threadedly matched with the catalytic shell.

[0007] The muffler body includes a muffler shell and a connecting pipe, one end of the muffler shell is fixedly connected to one end of the catalytic shell, the connecting pipe is arranged in the muffler shell, a plurality of through holes are opened on the peripheral side of the connecting pipe, and the connecting pipe and the through holes constitute a muffler pipe structure.

[0008] A plurality of silencer cottons are arranged inside the silencer shell, and the silencer cottons are arranged on the peripheral side of the connecting pipe. Through the above arrangement, the dual arrangement of a plurality of through holes on the peripheral side of the connecting pipe and the silencer cottons is utilized, so that the silencer body has a double-layer silencer and sound insulation effect, improves the efficiency of catalytic silencer, and is beneficial to improving the driving quality of the vehicle.

[0009] The surface of the heat insulation cover is provided with an aluminum foil layer, and the end point of the heat insulation contact is provided with a rubber contact block, and the rubber contact block is in contact with the surface of the catalyst carrier; through the above arrangement, the aluminum foil layer has a better heat insulation effect, and the rubber contact surface is not easy to generate vibration and noise.

[0010] The utility model has the following beneficial effects:

[0011] The utility model provides a catalyst body and a muffler body, and utilizes the dual arrangement of a plurality of through holes and muffler cotton on the peripheral side of the connecting pipe, so that the muffler body has a double-layer muffler and sound insulation effect, improves the efficiency of catalytic muffler, and is beneficial to improving the driving quality of the vehicle; utilizes a heat insulation cover and a heat insulation contact point, adopts a semi-enclosed type to wrap and isolate the catalyst carrier, reduces the influence of the heat of other components of the vehicle, and is fixed by screws, has a simple structure, is easy to fix, and adopts a rubber contact surface, which is not easy to generate vibration and noise.

[0012] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 This is a schematic diagram of the assembly structure of the utility model;

[0015] Figure 2 for Figure 1 Schematic diagram of the AA section structure;

[0016] Figure 3 for Figure 1 Schematic diagram of the structure of the middle BB section;

[0017] Figure 4 for Figure 3 Magnified view of area C.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0019] 1. Catalyst body; 101. Catalyst shell; 102. Catalyst carrier; 103. Heat insulation cover; 104. Connection block; 105. Screw; 106. Heat insulation contact; 2. Muffler body; 201. Muffler shell; 202. Connection pipe; 203. Through hole; 204. Muffler cotton. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limitations on the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] See also Figure 1-Figure 4 As shown, the utility model is a double-layer sound insulation automobile catalytic muffler, comprising a catalyst body 1 and a muffler body 2, the catalyst body 1 comprising a catalytic shell 101, a catalyst carrier 102 is installed inside the catalytic shell 101, a heat shield 103 is arranged on the circumference of the catalyst carrier 102, the heat shield 103 is a semi-circular ring structure, the middle and both sides of the inner side of the heat shield 103 are fixedly connected with raised heat insulation contacts 106, both ends of the heat shield 103 are fixedly connected with connecting blocks 104, one side of the connecting block 104 is in contact with the inner wall of the catalytic shell 101, a screw 105 is arranged inside the connecting block 104, one end of the screw 105 is arranged in the catalytic shell 101 and is threadedly matched with it.

[0024] The muffler body 2 includes a muffler shell 201 and a connecting pipe 202. One end of the muffler shell 201 is fixedly connected to one end of the catalytic shell 101. The connecting pipe 202 is arranged in the muffler shell 201. A plurality of through holes 203 are opened on the peripheral side of the connecting pipe 202. The connecting pipe 202 and the through holes 203 constitute a muffler pipe structure.

[0025] A plurality of sound-absorbing cottons 204 are arranged inside the sound-absorbing shell 201, and the sound-absorbing cottons 204 are arranged on the peripheral side of the connecting pipe 202. Through the above arrangement, the dual arrangement of a plurality of through holes 203 and the sound-absorbing cottons 204 are utilized on the peripheral side of the connecting pipe 202, so that the muffler body 2 has a double-layer sound-absorbing and sound-isolating effect, thereby improving the efficiency of catalytic sound-absorbing and being beneficial to improving the driving quality of the vehicle.

[0026] The surface of the heat insulation cover 103 is provided with an aluminum foil layer, and the end point of the heat insulation contact 106 is provided with a rubber contact block, which is in contact with the surface of the catalyst carrier 102. Through the above arrangement, the aluminum foil layer has a better heat insulation effect, and the rubber contact surface is not easy to generate vibration and noise.

[0027] It should be supplemented that, in actual use, the heat insulation cover 103 is covered on the catalyst carrier 102, so that the rubber contact block of the heat insulation contact 106 is in contact with the catalyst carrier 102, and the heat insulation cover 103 is fixed by screws 105 and connecting blocks 104, wherein the hollow space between the heat insulation cover 103 and the catalyst carrier 102 assists the catalyst carrier 102 in heat dissipation; the exhaust is purified by the catalyst body 1, and the sound is reduced by the muffler body 2, and the dual setting of a plurality of through holes 203 and silencer cotton 204 is used on the peripheral side of the connecting pipe 202, so that the muffler body 2 has a double-layer sound-absorbing and sound-isolating effect, thereby improving the efficiency of catalytic silencer and helping to improve the driving quality of the vehicle.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0029] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A double-layer sound-insulating automobile catalytic muffler, comprising a catalytic converter body (1) and a muffler body (2), characterized in that: The catalyst body (1) comprises a catalytic shell (101), a catalyst carrier (102) is installed inside the catalytic shell (101), a heat shield (103) is arranged around the catalyst carrier (102), the heat shield (103) is a semi-circular ring structure, the middle part and both sides of the inner side of the heat shield (103) are fixedly connected with raised heat insulation contacts (106), both ends of the heat shield (103) are fixedly connected with connecting blocks (104), one side of the connecting block (104) is in contact with the inner wall of the catalytic shell (101), a screw (105) is arranged inside the connecting block (104), one end of the screw (105) is arranged in the catalytic shell (101) and is threadedly matched with the catalytic shell (101).

2. The double-layer sound-insulating automobile catalytic muffler according to claim 1 is characterized in that: The muffler body (2) comprises a muffler shell (201) and a connecting pipe (202); one end of the muffler shell (201) is fixedly connected to one end of the catalytic shell (101); the connecting pipe (202) is arranged in the muffler shell (201); a plurality of through holes (203) are provided on the peripheral side surface of the connecting pipe (202); the connecting pipe (202) and the through holes (203) constitute a muffler pipe structure.

3. The double-layer sound-insulating automobile catalytic muffler according to claim 2 is characterized in that: A plurality of sound-absorbing cottons (204) are arranged inside the sound-absorbing outer shell (201), and the sound-absorbing cottons (204) are arranged on the peripheral side of the connecting pipe (202).

4. The double-layer sound-insulating automobile catalytic muffler according to claim 3 is characterized in that: The surface of the heat insulation cover (103) is provided with an aluminum foil layer, and the end point of the heat insulation contact (106) is provided with a rubber contact block, and the rubber contact block is in contact with the surface of the catalyst carrier (102).

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