Integrated double-layer sound absorption silencer

Abstract

The utility model provides an integrated double-layer sound absorption silencer, which relates to the technical field of silencers and comprises a silencing main body, an air inlet pipe is arranged at one end of the silencing main body, an air outlet pipe is arranged at the other end of the silencing main body, a damping spring is arranged at one end of the air inlet pipe in the silencing main body, and a sound insulation plate is arranged at the bottom of the damping spring. A first ventilation pipe is arranged at the bottom of the sound insulation plate, a second ventilation pipe is arranged on one side of the first ventilation pipe, a third ventilation pipe is arranged at the bottom of the second ventilation pipe, a vertical partition plate is arranged on one side of the third ventilation pipe, a fourth ventilation pipe is arranged at the bottom of the other side of the vertical partition plate, and a protective net is arranged at the bottom of the fourth ventilation pipe. The noise which just enters is subjected to flow division and sound absorption treatment, and the noise is effectively absorbed and eliminated.

Description

Technical Field

[0001] This utility model relates to the field of silencer technology, and in particular to an integrated double-layer sound-absorbing silencer. Background Technology

[0002] According to Chinese Patent No. CN213063797U, an integrated internal combustion engine intake muffler includes an outer shell. A partition is fixedly connected to the inner side wall of the outer shell. A first pipe is fixedly connected to the side wall of the partition. An inner shell is provided at one end of the first pipe. A first intake pipe is fixedly connected inside the inner shell. A sound-absorbing pad is fixedly connected to the inner side wall of the inner shell. A second pipe is provided between the inner shell and the outer shell. A mounting shell is fixedly connected to the surface of the second pipe. A linear bearing is provided at the top of the mounting shell. A connecting rod is provided inside the linear bearing. A first spring is provided on the surface of the connecting rod. A first baffle is fixedly connected to one end of the connecting rod. Multiple second intake pipes are provided on the side wall of the partition and on both sides of the first pipe. A mounting pipe is fixedly connected to one end of each second intake pipe.

[0003] The aforementioned comparative documents and existing technologies have the following technical problems: existing mufflers still have poor muffler performance when performing muffler operation, and when the muffler is not working, animals may accidentally enter and damage the inside of the muffler. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an integrated double-layer sound-absorbing silencer.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an integrated double-layer sound-absorbing silencer, comprising a silencer body, an air inlet pipe at one end of the silencer body, an air outlet pipe at the other end of the silencer body, a shock-absorbing spring at one end of the air inlet pipe inside the silencer body, a sound insulation plate at the bottom of the shock-absorbing spring, a first vent pipe at the bottom of the sound insulation plate, a second vent pipe at one side of the first vent pipe, a third vent pipe at the bottom of the second vent pipe, a vertical partition at one side of the third vent pipe, a fourth vent pipe at the bottom of the other side of the vertical partition, and a protective net at the bottom of the fourth vent pipe.

[0006] Preferably, one end of the air intake pipe of the silencing main body shell is a double-layer shell, the interior of the double-layer shell is provided with sound-absorbing material, the double-layer shell extends from the air intake pipe to the sound insulation plate at the bottom of the first vent pipe and the second vent pipe, and the double-layer shell is connected to the first vent pipe and the second vent pipe.

[0007] Preferably, the bottom of the intake pipe is provided with a diverter pipe, the diameter of the diverter pipe is the same as the diameter of the intake pipe, and both ends of the diverter pipe are provided with guide pipes.

[0008] Preferably, one end of the guide pipe is connected to the sound-absorbing body and communicates with the double-layer shell, and the other end of the guide pipe is connected to the sound insulation plate.

[0009] Preferably, the guide pipe is connected to the first vent pipe and the second vent pipe respectively, the bottom of the first vent pipe is provided with a sound insulation plate, and the shock absorption spring extends from the inner wall of the sound-absorbing body to the sound insulation plate at the bottom of the first vent pipe.

[0010] Preferably, the second vent pipe is connected to the third vent pipe, and the bottom of the third vent pipe is provided with a sound insulation plate. The vertical partition is connected to the sound insulation plate at the bottom of the first vent pipe and the vertical partition is connected to the sound insulation plate at the bottom of the third vent pipe by welding.

[0011] Preferably, the bottom of the second vent pipe is provided with a first through hole, the bottom of the third vent pipe is provided with a second through hole, and the bottom of the fourth vent pipe is provided with a third through hole.

[0012] Beneficial effects

[0013] This invention employs an integrated structure with a double-layer shell. When noise enters the silencer body through the air inlet pipe, it flows through the diversion pipe to the guide pipes at both ends. One end of the guide pipe is connected to the double-layer shell, where the sound-absorbing material inside the double-layer shell absorbs the noise. Any noise that cannot be absorbed will return or enter the first and second vent pipes. The other end of the guide pipe directly connects to the first and second vent pipes. This effectively diverts and silences the loud noise received, thus achieving effective noise reduction.

[0014] In this invention, multiple air inlets and through holes are used, which helps to disperse noise and further improve noise reduction efficiency.

[0015] In this invention, shock-absorbing springs and protective nets are used. When loud noise enters the silencer, it will cause vibration. The shock-absorbing springs will weaken these vibrations to avoid affecting the silencer, while the protective nets can prevent animals or flying insects from entering the silencer and affecting its working efficiency. Attached Figure Description

[0016] Figure 1 This is a perspective view of the internal structure of this utility model;

[0017] Figure 2 This is a front view of the internal structure of this utility model;

[0018] Figure 3This is an isometric view of the present invention;

[0019] Figure 4 These are left and right sectional views of this utility model.

[0020] Legend:

[0021] 1. Silencing body; 101. Sound-absorbing material; 2. Air inlet pipe; 201. Diverter pipe; 202. Guide pipe; 3. Air outlet pipe; 4. Shock-absorbing spring; 5. Sound insulation board; 6. First vent pipe; 7. Second vent pipe; 701. First through hole; 8. Third vent pipe; 801. Second through hole; 9. Fourth vent pipe; 901. Third through hole; 10. Vertical partition; 11. Protective net. Detailed Implementation

[0022] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0023] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1:

[0025] Reference Figure 1-4This utility model provides an integrated double-layer sound-absorbing muffler, including a muffler body 1. One end of the muffler body 1 has an air inlet pipe 2, and the bottom of the air inlet pipe 2 has a diversion pipe 201 with the same diameter as the air inlet pipe 2. Both ends of the diversion pipe 201 have guide pipes 202. One end of the air inlet pipe 2 of the muffler body 1 is a double-layer shell, and the interior of the double-layer shell contains sound-absorbing material 101. The other end of the muffler body 1 has an air outlet pipe 3. A damping spring 4 is installed at one end of the air inlet pipe 2 inside the muffler body 1. When a large noise enters the muffler, it will vibrate. The damping spring 4 will weaken these vibrations to avoid affecting the muffler's sound absorption. The bottom is provided with a sound insulation plate 5. One end of the guide pipe 202 is connected to the silencing body 1 and communicates with the double-layer shell. The other end of the guide pipe 202 is connected to the sound insulation plate 5. The bottom of the sound insulation plate 5 is provided with a first vent pipe 6, and one side of the first vent pipe 6 is provided with a second vent pipe 7. The double-layer shell extends from the air inlet pipe 2 to the sound insulation plate 5 at the bottom of the first vent pipe 6 and the second vent pipe 7, and communicates with the first vent pipe 6 and the second vent pipe 7. The guide pipe 202 communicates with the first vent pipe 6 and the second vent pipe 7 respectively. When noise enters the silencing body 1 through the air inlet pipe 2, it enters the guide pipes 202 at both ends through the diversion pipe 201. One end of the upper part is connected to the double-layer shell. The sound-absorbing material 101 inside the double-layer shell absorbs the volume. The unabsorbed volume will return or enter the first vent pipe 6 and the second vent pipe 7. The other end of the guide pipe 202 is directly connected to the first vent pipe 6 and the second vent pipe 7. This will divert and silence the loud noise that has just been received. The bottom of the first vent pipe 6 is provided with a sound insulation plate 5. The damping spring 4 extends from the inner wall of the silencer body 1 to the sound insulation plate 5 at the bottom of the first vent pipe 6. The bottom of the second vent pipe 7 is provided with a third vent pipe 8. A vertical partition 10 is provided on one side of the third vent pipe 8. A fourth vent pipe 9 is provided at the bottom of the other side of the vertical partition 10. The air pipe 7 is connected to the third air pipe 8. The bottom of the third air pipe 8 is equipped with a sound insulation plate 5. The vertical partition 10 is connected to the sound insulation plate 5 at the bottom of the first air pipe 6 and the sound insulation plate 5 at the bottom of the third air pipe 8 by welding. The bottom of the second air pipe 7 is equipped with a first through hole 701, the bottom of the third air pipe 8 is equipped with a second through hole 801, and the bottom of the fourth air pipe 9 is equipped with a third through hole 901. The bottom of the fourth air pipe 9 is equipped with a protective net 11. The protective net 11 can prevent animals or flying insects from entering the silencer and affecting the working efficiency. The use of multiple air pipes and through holes is conducive to the noise dispersion and silencing treatment, further improving the silencing efficiency. Specific Implementation Example 2:

[0027] Reference Figure 1Because dust also enters when noise enters, and dust can affect the soundproofing effect, a dust collection screen is installed inside the intake pipe 2 inside the muffler to block the dust before internal soundproofing treatment, effectively solving this problem.

[0028] In summary:

[0029] 1. The integrated structure with a double-layer shell enables the diversion and sound absorption of incoming noise, effectively absorbing and eliminating noise.

[0030] 2. Multiple vent pipes and through holes are used to disperse and reduce noise, further improving noise reduction efficiency;

[0031] 3. By employing shock-absorbing springs 4 and protective netting 11, the vibrations caused by noise are reduced or eliminated by the shock-absorbing springs 4, while the protective netting 11 blocks small animals or flying insects from the outside.

[0032] To avoid affecting the muffler.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An integrated double-layer sound-absorbing silencer, comprising a silencer body (1), characterized in that: One end of the silencing body (1) is provided with an air inlet pipe (2), and the other end of the silencing body (1) is provided with an air outlet pipe (3). One end of the air inlet pipe (2) inside the silencing body (1) is provided with a shock-absorbing spring (4). The bottom of the shock-absorbing spring (4) is provided with a sound insulation plate (5). The bottom of the sound insulation plate (5) is provided with a first vent pipe (6). One side of the first vent pipe (6) is provided with a second vent pipe (7). The bottom of the second vent pipe (7) is provided with a third vent pipe (8). One side of the third vent pipe (8) is provided with a vertical partition (10). The bottom of the other side of the vertical partition (10) is provided with a fourth vent pipe (9). The bottom of the fourth vent pipe (9) is provided with a protective net (11).

2. The integrated double-layer sound-absorbing silencer according to claim 1, characterized in that: The outer shell of the silencing body (1) has a double-layer shell at one end of the air inlet pipe (2). The double-layer shell is provided with sound-absorbing material (101) inside. The double-layer shell extends from the air inlet pipe (2) to the sound insulation plate (5) at the bottom of the first vent pipe (6) and the second vent pipe (7), and the double-layer shell is connected to the first vent pipe (6) and the second vent pipe (7).

3. The integrated double-layer sound-absorbing silencer according to claim 2, characterized in that: The bottom of the intake pipe (2) is provided with a diverter pipe (201), the diameter of the diverter pipe (201) is the same as the diameter of the intake pipe (2), and both ends of the diverter pipe (201) are provided with guide pipes (202).

4. The integrated double-layer sound-absorbing silencer according to claim 3, characterized in that: One end of the guide pipe (202) is connected to the sound-absorbing body (1), and the guide pipe (202) is connected to the double-layer shell. The other end of the guide pipe (202) is connected to the sound insulation plate (5).

5. The integrated double-layer sound-absorbing silencer according to claim 4, characterized in that: The guide pipe (202) is connected to the first vent pipe (6) and the second vent pipe (7) respectively. The bottom of the first vent pipe (6) is provided with a sound insulation plate (5). The shock-absorbing spring (4) extends from the inner wall of the sound-absorbing body (1) to the sound insulation plate (5) at the bottom of the first vent pipe (6).

6. The integrated double-layer sound-absorbing silencer according to claim 5, characterized in that: The second vent pipe (7) is connected to the third vent pipe (8). The bottom of the third vent pipe (8) is provided with a sound insulation plate (5). The vertical partition (10) and the sound insulation plate (5) at the bottom of the first vent pipe (6) and the vertical partition (10) and the sound insulation plate (5) at the bottom of the third vent pipe (8) are all connected by welding.

7. The integrated double-layer sound-absorbing silencer according to claim 6, characterized in that: The bottom of the second vent pipe (7) is provided with a first through hole (701), the bottom of the third vent pipe (8) is provided with a second through hole (801), and the bottom of the fourth vent pipe (9) is provided with a third through hole (901).

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