Exhaust silencer

Abstract

The utility model discloses an exhaust silencer which comprises a first silencer body, one side of the first silencer body is in threaded connection with a hollow threaded connection pipe, and one side of the hollow threaded connection pipe is in threaded connection with a second silencer body. By means of the structure, the outer threads are arranged on one side of the first silencer body and one side of the second silencer body, the first inner threads are arranged on the other side of the first silencer body and the other side of the second silencer body, the sliding grooves are formed in the side walls of the first silencer body and the second silencer body, the sliding blocks are arranged in the sliding grooves, the sliding covers are arranged at the upper ends of the sliding blocks, and therefore silencing materials can be replaced conveniently; micro-perforated plates are arranged in the first silencer body and the second silencer body, flow guide plates are arranged on one sides of the micro-perforated plates, silencing material layers are arranged on one sides of the flow guide plates, filter cotton is arranged on one sides of the silencing material layers, and sound absorption cotton, metal fiber layers, glass fiber layers, porous ceramics and foam materials are arranged in the silencing material layers, so that the silencing effect of the silencer is better.

Description

Technical Field

[0001] This utility model relates to the field of power auxiliary equipment technology, and in particular to an exhaust muffler. Background Technology

[0002] The power auxiliary equipment industry is an important part of the power equipment manufacturing industry. It mainly provides auxiliary equipment and services for power production. Most of the power auxiliary equipment industry is used in industries such as pumps and fans. These industries generally generate a large amount of exhaust gas emissions during operation. In order to reduce the noise generated when exhaust gas is discharged, an exhaust silencer is required.

[0003] When using an exhaust muffler, the existing technology may not achieve the expected noise reduction effect due to its relatively simple structure; prolonged use of the existing technology may cause damage to the internal muffler structure, and the simple disassembly structure may lead to a waste of resources. Utility Model Content

[0004] The purpose of this utility model is to provide an exhaust muffler that, by providing a slider and a groove, facilitates the replacement of the sound-absorbing materials inside the first muffler body and the second muffler. By providing a variety of sound-absorbing materials, the muffler achieves better sound absorption.

[0005] To achieve the above objectives, an exhaust muffler is provided, comprising a first muffler body, a hollow threaded connecting pipe threaded to one side of the first muffler body, and a second muffler body threaded to one side of the hollow threaded connecting pipe. Mounting blocks are installed on one side of both the second and first muffler bodies. External threads are fixedly provided on one side of both the first and second muffler bodies, and first internal threads are fixedly provided on the other side of both the first and second muffler bodies. A second internal thread is fixedly provided inside the mounting block, and the second internal thread and the external thread are threadedly connected. Multiple sets of muffler holes are symmetrically fixed and interconnected on one side of both the first and second muffler bodies. The first and second muffler bodies contain... Each silencer body is fixedly equipped with a micro-perforated plate. Multiple sets of micro-perforations are symmetrically fixed and interconnected on one side of each micro-perforated plate. A flow guide plate is fixedly installed on one side of each micro-perforated plate. A sound-absorbing material layer is fixedly installed on one side of the flow guide plate. Filter cotton is fixedly installed on one side of the sound-absorbing material layer. Slide grooves are fixedly installed on the side walls of both the first and second silencer bodies and are interconnected. A slider is slidably installed inside the slide groove. A sliding cover is fixedly installed at the upper end of the slider. A pull rod is fixedly installed at the upper end of the sliding cover. Sound-absorbing cotton is fixedly installed inside the sound-absorbing material layer. A metal fiber layer is fixedly installed on one side of the sound-absorbing cotton. A glass fiber layer is fixedly installed on one side of the metal fiber layer. Porous ceramic is fixedly installed on one side of the glass fiber layer. Foam material is fixedly installed on one side of the porous ceramic.

[0006] According to the exhaust muffler, an air inlet is fixed and communicates with one side of the first muffler body and the second muffler body, and an air outlet is fixed and communicates with the other side of the first muffler body and the second muffler body.

[0007] Beneficial effects:

[0008] 1. A hollow threaded connecting pipe is threaded to one side of the first muffler body, and a second muffler body is threaded to one side of the hollow threaded connecting pipe. External threads are fixedly provided on one side of both the first and second muffler bodies, and internal threads are fixedly provided on the other side of both the first and second muffler bodies. A mounting block is threaded to one side of both the first and second muffler bodies. A sliding groove is fixedly and interconnected on the sidewalls of both the first and second muffler bodies. A slider is slidably provided inside the sliding groove. A sliding cover is fixedly provided on the upper end of the slider, and a pull rod is fixedly provided on the upper end of the sliding cover. The slider and sliding groove facilitate the replacement of the sound-absorbing material inside the first and second mufflers.

[0009] 2. Both the first and second muffler bodies have micro-perforated plates fixedly installed inside. Multiple sets of micro-perforations are symmetrically fixed and interconnected on one side of each micro-perforated plate. A filter cotton is fixedly installed on one side of the micro-perforated plate, a sound-absorbing material layer is fixedly installed on the side of the filter cotton, a baffle plate is fixedly installed on the side of the sound-absorbing material layer, sound-absorbing cotton is fixedly installed inside the sound-absorbing material layer, a metal fiber layer is fixedly installed on one side of the sound-absorbing cotton, a glass fiber layer is fixedly installed on one side of the metal fiber layer, porous ceramic is fixedly installed on one side of the glass fiber layer, and foam material is fixedly installed on the side of the porous ceramic. By using multiple sound-absorbing materials, the muffler achieves better sound absorption.

[0010] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0012] Figure 1 This is a perspective view of an exhaust muffler proposed in this utility model;

[0013] Figure 2 This is a cross-sectional view of an exhaust muffler proposed in this utility model;

[0014] Figure 3 This is a cross-sectional view of the sound-absorbing material layer of an exhaust muffler proposed in this utility model;

[0015] Figure 4 This is an exploded view of an exhaust muffler proposed in this utility model;

[0016] Figure 5 The present utility model proposes Figure 4 Enlarged view of point A in the middle.

[0017] Legend:

[0018] 1. First silencer body; 2. Hollow threaded connecting pipe; 3. Second silencer body; 4. Silencing hole; 5. Mounting block; 6. Filter cotton; 7. Silencing material layer; 8. Air inlet; 9. Micro-perforated plate; 10. Micro-perforation; 11. Guide plate; 12. Air outlet; 13. Sound-absorbing cotton; 14. Metal fiber layer; 15. Glass fiber layer; 16. Porous ceramic; 17. Foam material; 18. External thread; 19. First internal thread; 20. Pull rod; 21. Second internal thread; 22. Sliding cover; 23. Sliding block; 24. Slide groove. Detailed Implementation

[0019] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0020] Reference Figure 1-5This utility model discloses an exhaust muffler, comprising a first muffler body 1. A hollow threaded connecting pipe 2 is threadedly connected to one side of the first muffler body 1, and a second muffler body 3 is threadedly connected to one side of the hollow threaded connecting pipe 2. Mounting blocks 5 are installed on one side of both the second muffler body 3 and the first muffler body 1. The first muffler body 1 and the second muffler body 3 are connected by the hollow threaded connecting pipe 2. The mounting blocks 5 facilitate the installation of the exhaust muffler for both the first muffler body 1 and the second muffler body 3. External threads 18 are fixedly provided on one side of both the first muffler body 1 and the second muffler body 3, and first internal threads 19 are fixedly provided on the other side of both. A second internal thread 21 is fixedly provided inside the mounting block 5, and the second internal thread 21 is threadedly connected to the external thread 18. The first muffler body 1 is threadedly connected to the second internal thread 21 on one side of the mounting block 5 via the external thread 18, facilitating the installation of the first muffler body 1 on the mounting block 5. Similarly, the second muffler body 3 is installed in the same manner. The first silencer body 1 and the second silencer body 3 are symmetrically fixed and interconnected on one side, with multiple sets of silencing holes 4. Both the first silencer body 1 and the second silencer body 3 have micro-perforated plates 9 fixedly installed inside. Each micro-perforated plate 9 has multiple sets of micro-perforations 10 symmetrically fixed and interconnected on one side. The micro-perforated plate 9 has numerous micro-perforations 10. When sound waves pass through, the air column inside the perforations resonates with the air cavity behind the plate, thus consuming sound energy and achieving silencing. A guide plate 11 is fixedly installed on one side of the micro-perforated plate 9, a silencing material layer 7 is fixedly installed on one side of the guide plate 11, and a filter cotton 6 is fixedly installed on one side of the silencing material layer 7. The guide plate 11 is inclined to guide the airflow and change its direction, increasing the contact time and area between the airflow and the silencing material layer 7. Both the first muffler body 1 and the second muffler body 3 have fixed and interconnected sliding grooves 24 on their side walls. A slider 23 slides inside the sliding groove 24, and a sliding cover 22 is fixedly mounted on the upper end of the slider 23. A pull rod 20 is fixedly mounted on the upper end of the sliding cover 22. By pulling the pull rod 20, the lower end of the sliding cover 22 is moved by the slider 23, allowing the sliding cover 22 to be removed from the muffler side wall. Various sound-absorbing materials are then disassembled and replaced using tools. Sound-absorbing cotton 13 is fixedly installed inside the sound-absorbing material layer 7. A metal fiber layer 14 is fixedly installed on one side of the sound-absorbing cotton 13, and a glass fiber layer 15 is fixedly installed on one side of the metal fiber layer 14. The sound-absorbing cotton 13 has numerous tiny pores. When sound enters, the sound waves cause the air inside the pores to vibrate, converting sound energy into heat energy and dissipating it, thus achieving the sound absorption effect. The metal fiber layer 14 is woven from high-temperature resistant metal fibers, and the glass fiber layer 15 is a structural layer formed primarily of glass fiber. A porous ceramic 16 is fixedly disposed on one side of the fiberglass layer 15, and a foam material 17 is fixedly disposed on one side of the porous ceramic 16.The porous ceramic 16 has a large number of interconnected pores. After sound waves enter the pores, they will be continuously reflected and scattered in them. Through friction and other actions, the sound energy is converted into heat energy, thereby achieving the purpose of noise reduction. The foam material 17 has a large number of tiny pores inside, which has a good absorption effect on mid-to-high frequency noise.

[0021] The first silencer body 1 and the second silencer body 3 are both fixed on one side and have air inlets 8 connected to each other, and the first silencer body 1 and the second silencer body 3 are both fixed on the other side and have air outlets 12 connected to each other.

[0022] Specifically: the air inlet 8 and the air outlet 12 control the entry and exit of exhaust gas, respectively.

[0023] Working principle: First, thread the mounting block 5 to one side of the exhaust pipe. Then, remove the first muffler body 1 and thread it to one side of the mounting block 5. Remove the hollow threaded connecting pipe 2 and thread it to one side of the first muffler body 1. Remove the second muffler body 3 and thread it to one side of the hollow threaded connecting pipe 2. Finally, thread the mounting block 5 to one side of the second muffler body 3 to complete the installation of the exhaust muffler. The first muffler body 1 and the second muffler body 3 are equipped with micro-perforated plates 9 inside. One side of the micro-perforated plate 9 has a guide plate 11, and one side of the guide plate 11 has... The muffler has a sound-absorbing material layer 7, with a filter cotton 6 on one side. Inside the sound-absorbing material layer 7 are sound-absorbing cotton 13, a metal fiber layer 14, a glass fiber layer 15, porous ceramic 16, and foam material 17. By using multiple sound-absorbing materials, the muffler achieves better noise reduction. When the sound-absorbing materials inside the exhaust muffler need to be replaced, the first muffler body 1 and the second muffler body 3 are disassembled using the same principle. By pulling the lever 20, the lower end of the sliding cover 22 is moved by the lever 20 to slide the fixed slider 23, allowing the sliding cover 22 to be removed from the muffler side wall. Tools are then used to disassemble and replace the various sound-absorbing materials. The embodiments of this utility model have been described in detail above with reference to the accompanying drawings. However, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model.

Claims

1. An exhaust muffler, comprising a first muffler body (1), characterized in that: A hollow threaded connecting pipe (2) is threaded to one side of the first muffler body (1), and a second muffler body (3) is threaded to one side of the hollow threaded connecting pipe (2). Mounting blocks (5) are installed on one side of both the second muffler body (3) and the first muffler body (1). External threads (18) are fixedly installed on one side of both the first muffler body (1) and the second muffler body (3). First internal threads (19) are fixedly installed on the other side of both the first muffler body (1) and the second muffler body (3). A second internal thread (21) is fixedly installed inside the mounting block (5). The second internal thread (21) and the external thread (18) are threaded together. Multiple sets of muffler holes (4) are symmetrically fixed and interconnected on one side of both the first muffler body (1) and the second muffler body (3). Micro-perforated plates (9) are fixedly installed inside both the first muffler body (1) and the second muffler body (3). The micro-perforated plates (9) are symmetrically fixed on one side and... Multiple sets of micro-perforations (10) are connected in a common manner. A guide plate (11) is fixedly provided on one side of the micro-perforated plate (9). A sound-absorbing material layer (7) is fixedly provided on one side of the guide plate (11). A filter cotton (6) is fixedly provided on one side of the sound-absorbing material layer (7). The side walls of the first silencer body (1) and the second silencer body (3) are both fixed and connected with a sliding groove (24). A slider (23) is slidably provided inside the sliding groove (24). The upper end of the slider (23) is fixed. A sliding cover (22) is provided, and a pull rod (20) is fixedly provided at the upper end of the sliding cover (22). A sound-absorbing cotton (13) is fixedly provided inside the sound-absorbing material layer (7). A metal fiber layer (14) is fixedly provided on one side of the sound-absorbing cotton (13). A glass fiber layer (15) is fixedly provided on one side of the metal fiber layer (14). A porous ceramic (16) is fixedly provided on one side of the glass fiber layer (15). A foam material (17) is fixedly provided on one side of the porous ceramic (16).

2. The exhaust muffler according to claim 1, characterized in that, The first silencer body (1) and the second silencer body (3) are both fixed and connected to each other with an air inlet (8), and the first silencer body (1) and the second silencer body (3) are both fixed and connected to each other with an air outlet (12).

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