Silencing cotton overlapping structure of silencer

Abstract

The utility model provides a silencing cotton stacking structure of a silencer, and relates to the field of silencing. The silencing cotton stacking structure of the silencer comprises a first shell and a second shell, a sealing assembly and a silencing assembly are arranged between the first shell and the second shell, and the silencing assembly comprises a silencing cotton core. The air flow needs to penetrate through the noise reduction cotton core, when the air flow makes contact with the surface of the inner wall of the noise reduction cotton core, the noise reduction cotton core absorbs high-frequency noise in the air, the noise reduction effect is achieved, and a plurality of exhaust square grooves, a plurality of exhaust round holes and a plurality of exhaust long grooves are formed in the outer side of the noise reduction cotton core. And one end of each of the plurality of square exhaust grooves, the plurality of round exhaust holes and the plurality of long exhaust grooves extends into the silencing cotton core, the plurality of square exhaust grooves, the plurality of round exhaust holes and the plurality of long exhaust grooves play a role in guiding and dispersing airflow, a stagnation point pressure diffusion phenomenon is formed, and the silencing and noise reduction effects of the silencing cotton core are improved in an auxiliary mode.

Description

Technical Field

[0001] The utility model relates to a sound-absorbing cotton superposition structure, in particular to a sound-absorbing cotton superposition structure for a silencer, and belongs to the technical field of sound-absorbing. Background Art

[0002] The air filter outlet pipe is a very important component of the automobile intake system. Its main function is to filter out impurities or dust in the air and allow clean air to enter the cylinder. Fuel combustion requires a large amount of air.

[0003] For example, the existing patent application number is: 201821613836.9. The utility model discloses an automobile air filter, including a shell and filter paper. The filter paper is corrugated and rolled into a cone shape. The tip of the cone is set as a mounting hole. The shell includes a bottom cover, a large positioning ring, a small positioning ring and a top cover. The large and small positioning rings are respectively provided with annular grooves. The top of the filter paper abuts in the groove of the large positioning ring, and the mounting hole of the filter paper abuts in the groove of the small positioning ring. The bottom cover is in contact with the bottom of the large positioning ring, and the top cover is provided with a groove matching the small positioning ring.

[0004] However, during the application of the air filter, a porous silencer cavity structure is designed on the air filter outlet pipe to reduce the noise of the vehicle during operation. Although the structure is simple, the noise reduction effect is poor, especially when the vehicle has a lot of mid- and high-frequency noise, resulting in unclear noise reduction. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The purpose of the utility model is to provide a silencer cotton stacking structure in order to solve the above-mentioned problem, so as to solve the problem that in the prior art, a porous silencer cavity structure is designed on the air outlet pipe of the air filter to reduce the noise of the whole vehicle in operation. Although the structure is simple, the noise reduction effect is poor, especially the high-frequency noise of the whole vehicle is relatively large, resulting in the problem that the noise reduction is not obvious.

[0007] (II) Technical solution

[0008] The utility model is implemented through the following technical scheme: a silencer silencer cotton superposition structure, including a first shell and a second shell, a sealing component and a silencer component are arranged between the first shell and the second shell, the silencer component includes a silencer cotton core, a plurality of exhaust square grooves, a plurality of exhaust circular holes and a plurality of exhaust long grooves are opened on the outer side of the silencer cotton core, and silencer cotton sleeves are provided on the top and bottom of the outer side of the silencer cotton core.

[0009] Preferably, the exhaust long groove is opened at the top of the outer side of the silencer cotton core, and an exhaust inclined pipe is fixedly connected to one side of the silencer cotton core. The gas can return to the inside of the silencer cotton core through the exhaust inclined pipe to form an air flow cycle.

[0010] Preferably, a plurality of mounting mesh plates are provided on the outer fixed sleeve of the silencer cotton core, and the plurality of mounting mesh plates are used to install the silencer cotton core to avoid the shaking of the silencer cotton core and ensure the stability of the silencer work of the silencer structure composed of the first shell, the second shell, the sealing assembly, the silencer assembly and other structures. Two groups of support frames are provided on the outer sides of the plurality of mounting mesh plates, and a certain distance is provided between the silencer cotton core installed by the plurality of mounting mesh plates and the first shell and the second shell to avoid the airflow discharged from the exhaust square grooves and the exhaust circular holes from colliding with the first shell and the second shell, thereby reducing the generation of noise. The two groups of support frames are fixedly connected to the inside of the first shell and the second shell respectively, and the two groups of support assemblies install the mounting mesh plates without affecting the installation and disassembly between the first shell and the second shell.

[0011] Preferably, each group of support frames includes two arc-shaped mounting plates, and the two arc-shaped mounting plates are respectively arranged on the top and bottom of the mounting mesh plate, and support the top and bottom of the mounting mesh plate at the same time to ensure stable and efficient installation of the mounting mesh plate.

[0012] Preferably, the sealing assembly includes a first friction frame and a second friction frame, wherein the first friction frame is fixedly connected to one side of the first outer shell, and a large area of ​​the first friction frame and the second friction frame are in contact and squeezed with each other, so as to provide a good seal between the first outer shell and the second outer shell to avoid noise caused by air flow leakage inside the silencer structure, and a rubber pad is fixedly connected to one side of the first friction frame.

[0013] Preferably, the second friction frame is fixedly connected to one side of the second outer shell, and a mounting groove is provided on one side of the second friction frame. The rubber pad elastically deforms inside the mounting groove to fill the gap between the first friction frame and the second friction frame, thereby having good sealing performance.

[0014] Preferably, an air inlet duct is fixedly connected to the top of the second shell, and a support bracket is fixedly connected to the bottom of the second shell. The support bracket supports the first shell so that the first shell and the second shell are tightly fitted together, and an air outlet duct is fixedly connected to the bottom of the support bracket.

[0015] The utility model provides a muffler silencer cotton stacking structure, which has the following beneficial effects:

[0016] 1. The silencer has a superimposed structure of silencer cotton. The airflow needs to pass through the silencer cotton core. When the airflow contacts the inner wall surface of the silencer cotton core, the silencer cotton core absorbs the high-frequency noise in the gas to reduce noise. In addition, a plurality of exhaust square grooves, a plurality of exhaust circular holes and a plurality of exhaust long grooves are provided on the outer side of the silencer cotton core. One end of the plurality of exhaust square grooves, a plurality of exhaust circular holes and a plurality of exhaust long grooves extends into the silencer cotton core. The plurality of exhaust square grooves, a plurality of exhaust circular holes and a plurality of exhaust long grooves guide and disperse the airflow, forming a stagnation pressure diffusion phenomenon, which helps to improve the silencing and noise reduction effect of the silencer cotton core.

[0017] 2. The silencer has a superimposed structure of silencer cotton, and multiple exhaust square grooves, multiple exhaust circular holes and multiple exhaust long grooves are designed in different shapes, which can interrupt the dispersed airflow and improve the silencer effect. Silencer cotton sleeves are set on the top and bottom of the outer side of the silencer cotton core, and multiple exhaust long grooves and a part of the exhaust circular holes are connected to the inside of the two silencer cotton sleeves. The silencer cotton sleeves block and silence the airflow diverted by the exhaust long grooves and the exhaust circular holes to prevent the airflow from blowing to the first shell and the second shell to generate new noise. An exhaust oblique pipe is fixedly connected to one side of the silencer cotton core. While the exhaust oblique pipe plays a role in dispersing the airflow and reducing noise, the gas between the first shell and the second shell can return to the inside of the silencer cotton core through the exhaust oblique pipe, forming an airflow flow cycle, avoiding the storage of gas between the first shell and the second shell, and ensuring the cleanliness between the first shell and the second shell.

[0018] 3. The silencer cotton stacking structure, after the rubber pad fixed to the first friction frame is inserted into the inside of the support bracket opened on one side of the second friction frame, the rubber pad is elastically deformed inside the support bracket to fill the gap between the first friction frame and the second friction frame, thereby improving the sealing between the first friction frame and the second friction frame. At the same time, there is a large area of ​​mutual contact and extrusion between the first friction frame and the second friction frame, which has good sealing. Therefore, the sealing assembly composed of the first friction frame, the rubber pad, the second friction frame and other structures can perform good sealing between the first shell and the second shell, thereby avoiding noise caused by airflow leakage inside the silencer structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the first housing of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the sound-absorbing cotton core of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the second shell of the utility model.

[0023]

Main component symbol description

[0024] 1. First outer shell; 2. First friction frame; 3. Rubber pad; 4. Second outer shell; 5. Air inlet duct; 6. Second friction frame; 7. Installation groove; 8. Air outlet duct; 9. Silence cotton core; 10. Exhaust circular hole; 11. Exhaust oblique pipe; 12. Exhaust square groove; 13. Installation mesh plate; 14. Silence cotton sleeve; 15. Exhaust long groove; 16. Arc-shaped installation plate; 17. Support bracket. DETAILED DESCRIPTION

[0025] The utility model embodiment provides a silencer cotton stacking structure.

[0026] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , including a first shell 1 and a second shell 4, a sealing component and a silencer component are arranged between the first shell 1 and the second shell 4, the silencer component includes a silencer cotton core 9, a plurality of exhaust square grooves 12, a plurality of exhaust circular holes 10 and a plurality of exhaust long grooves 15 are opened on the outer side of the silencer cotton core 9, and a silencer cotton sleeve 14 is provided on the top and bottom of the outer side of the silencer cotton core 9.

[0027] When the utility model is in use: the silencer structure composed of the first shell 1, the second shell 4, the sealing component, the silencer component and the like is installed on the outlet pipe of the engine air intake pipe, and a silencer cotton core 9 is installed between the first shell 1 and the second shell 4. The airflow discharged from the outlet pipe of the engine air intake pipe needs to pass through the silencer cotton core 9. When the airflow contacts the inner wall surface of the silencer cotton core 9, the silencer cotton core 9 absorbs the high-frequency noise in the gas to play a noise reduction role, and a plurality of exhaust square grooves 12 and a plurality of exhaust circular holes 1 are opened on the outer side of the silencer cotton core 9. 0 and multiple exhaust long grooves 15, and one end of the multiple exhaust square grooves 12, the multiple exhaust circular holes 10 and the multiple exhaust long grooves 15 all extend into the interior of the silencer cotton core 9, the multiple exhaust square grooves 12, the multiple exhaust circular holes 10 and the multiple exhaust long grooves 15 play a role in guiding and dispersing the airflow, forming a stagnation point pressure diffusion phenomenon, and assisting in improving the soundproofing and noise reduction effect of the silencer cotton core 9, and the multiple exhaust square grooves 12, the multiple exhaust circular holes 10 and the multiple exhaust long grooves 15 are designed to be different shapes, which can interrupt the dispersed airflow and improve the soundproofing effect. Silencing cotton sleeves 14 are provided on the top and bottom of the outer side of the silencer cotton core 9, and a plurality of exhaust long grooves 15 and a part of the exhaust circular holes 10 are connected to the inside of the two silencer cotton sleeves 14. The silencer cotton sleeves 14 block and silence the airflow diverted by the exhaust long grooves 15 and the exhaust circular holes 10 to prevent the airflow from blowing onto the first shell 1 and the second shell 4 to generate new noise. An exhaust oblique pipe 11 is fixedly connected to one side of the silencer cotton core 9. While the exhaust oblique pipe 11 plays a role in dispersing the airflow and reducing noise, the gas between the first shell 1 and the second shell 4 can return to the inside of the silencer cotton core 9 through the exhaust oblique pipe 11, forming an airflow circulation, avoiding the storage of gas between the first shell 1 and the second shell 4, and ensuring the cleanliness between the first shell 1 and the second shell 4.

[0028] A plurality of mounting mesh plates 13 are fixedly sleeved on the outside of the muffler cotton core 9. A certain distance is maintained between the muffler cotton core 9 mounted by the plurality of mounting mesh plates 13 and the first shell 1 and the second shell 4, so that the airflow discharged from the exhaust square grooves 12 and the exhaust circular holes 10 can be prevented from hitting the first shell 1 and the second shell 4, thereby reducing the generation of noise. Two groups of support frames are arranged on the outside of the mounting mesh plates 13. The two groups of support frames are respectively fixedly connected to the inside of the first shell 1 and the second shell 4. When the two groups of support components install the mounting mesh plates 13, the installation and disassembly between the first shell 1 and the second shell 4 is not affected.

[0029] Each group of support frames includes two arc-shaped mounting plates 16, which are respectively arranged on the top and bottom of the mounting mesh plate 13, and support the top and bottom of the mounting mesh plate 13 at the same time, ensuring that the mounting mesh plate 13 is installed stably and efficiently. Multiple mounting mesh plates 13 are used to install the silencer cotton core 9 to avoid the silencer cotton core 9 from shaking, thereby ensuring the stability of the silencer work of the silencer structure composed of the first shell 1, the second shell 4, the sealing component, the silencer component and other structures.

[0030] The first friction frame 2 is fixedly connected to one side of the first housing 1 , and a rubber pad 3 is fixedly connected to one side of the first friction frame 2 , and the rubber pad 3 can be elastically deformed after being subjected to force.

[0031] After aligning the first friction frame 2 with the second friction frame 6 fixedly connected to one side of the second shell 4, inserting the rubber pad 3 fixed to the first friction frame 2 into the installation groove 7 provided on one side of the second friction frame 6, the rubber pad 3 elastically deforms inside the installation groove 7 to fill the gap between the first friction frame 2 and the second friction frame 6, thereby improving the sealing between the first friction frame 2 and the second friction frame 6. Meanwhile, a large area of ​​mutual contact and extrusion between the first friction frame 2 and the second friction frame 6 is provided, thereby having good sealing. Therefore, the sealing assembly composed of the first friction frame 2, the rubber pad 3, the second friction frame 6 and other structures can perform good sealing between the first shell 1 and the second shell 4, thereby avoiding noise caused by airflow leakage inside the silencer structure.

[0032] An air inlet duct 5 is fixedly connected to the top of the second shell 4. The air inlet duct 5 is used to connect with the outlet pipe of the engine intake pipe to guide the airflow into the silencer cotton core 9 installed between the first shell 1 and the second shell 4, so that the silencer structure can perform noise reduction treatment on it. A support bracket 17 is fixedly connected to the bottom of the second shell 4. The first shell 1 is supported by the support bracket 17 so that the first shell 1 and the second shell 4 are tightly fitted together to prevent the first shell 1 from being affected by the airflow and moving on one side of the second shell 4. An air outlet duct 8 is fixedly connected to the bottom of the support bracket 17, and a thread is provided on the outer side of the air outlet duct 8 for installing the duct.

[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A muffler silencer cotton stacking structure, comprising a first shell (1) and a second shell (4), characterized in that: A sealing component and a silencer component are provided between the first shell (1) and the second shell (4), the silencer component comprising a silencer cotton core (9), a plurality of exhaust square grooves (12), a plurality of exhaust circular holes (10) and a plurality of exhaust long grooves (15) being provided on the outer side of the silencer cotton core (9), and silencer cotton sleeves (14) are provided on the top and bottom of the outer side of the silencer cotton core (9).

2. A muffler silencer cotton stacking structure according to claim 1, characterized in that: The exhaust long groove (15) is arranged on the top of the outer side of the silencer cotton core (9), and an exhaust inclined pipe (11) is fixedly connected to one side of the silencer cotton core (9).

3. The muffler silencer cotton stacking structure according to claim 1 is characterized by: The outer fixed sleeve of the sound-absorbing cotton core (9) is provided with a plurality of mounting mesh plates (13), and the outer sides of the mounting mesh plates (13) are provided with two groups of support frames, which are respectively fixedly connected to the inside of the first outer shell (1) and the second outer shell (4).

4. The muffler silencer cotton stacking structure according to claim 3 is characterized by: Each group of support frames comprises two arc-shaped mounting plates (16), and the two arc-shaped mounting plates (16) are respectively arranged on the top and bottom of the mounting mesh plate (13).

5. The muffler silencer cotton stacking structure according to claim 1 is characterized in that: The sealing assembly comprises a first friction frame (2) and a second friction frame (6); the first friction frame (2) is fixedly connected to one side of the first housing (1); and a rubber pad (3) is fixedly connected to one side of the first friction frame (2).

6. A muffler silencer cotton stacking structure according to claim 5, characterized in that: The second friction frame (6) is fixedly connected to one side of the second outer shell (4), and a mounting groove (7) is provided on one side of the second friction frame (6).

7. The muffler silencer cotton stacking structure according to claim 1 is characterized by: The top of the second shell (4) is fixedly connected to an air inlet duct (5), the bottom of the second shell (4) is fixedly connected to a support bracket (17), and the bottom of the support bracket (17) is fixedly connected to an air outlet duct (8).

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