Silencer structure

Abstract

The utility model relates to the technical field of silencers, in particular to a silencer structure which comprises a mounting plate, a first silencing structure, a second silencing structure and an end cover. The mounting plate comprises an inlet, the first silencing structure comprises a first cavity, and the second silencing structure comprises a second cavity; the first silencing structure comprises sound absorption cotton and a sound absorption piece, and a plurality of sound absorption holes are formed in the sound absorption piece; and the second silencing structure comprises silencing cotton. The silencer structure comprises a mounting plate, a first silencing structure, a second silencing structure and an end cover, sound is transmitted in the inlet, the first cavity and the second cavity in sequence; when sound enters the first cavity, the first silencing structure absorbs the sound through the sound-absorbing cotton and greatly weakens the noise, and the low-decibel sound is discharged through the sound-absorbing holes in the sound-absorbing piece; and when the sound enters the second cavity, the second silencing structure absorbs and eliminates the remaining noise through the silencing cotton.

Description

Technical Field

[0001] The utility model relates to the technical field of mufflers, in particular to a muffler structure. Background Art

[0002] A muffler is a noise-reducing device that uses pipes and elbows with sound-absorbing linings, or pipes with sudden changes in cross-sectional area or other discontinuities in acoustic impedance, to attenuate or reflect noise within airflow ducts that also carry noise. However, with the rapid development of society, people's demands for a more refined working environment, along with their expectations for noise levels, are also increasing. Addressing the low noise reduction characteristics of existing mufflers is becoming increasingly important.

[0003] For example, patent application number 202320136836.9 discloses a muffler for air compressor equipment, comprising a muffler body, a housing fixedly connected to the left side of the muffler body, a positioning plate threadedly connected to the right side of the muffler body, and a positioning block fixedly connected to the inner cavity of the housing. The muffler, through the provision of a soundproofing plate, can soundproof the inner cavity of the housing to avoid noise explosions. The provision of a wave-peak sound-absorbing sponge layer provides high sound absorption, excellent thermal insulation, flame retardancy, light weight, and water resistance, while being harmless to the human body and environmentally friendly.

[0004] The existing muffler has a simple noise reduction structure and a general noise reduction effect. It is necessary to propose a muffler with better noise reduction effect. Utility Model Content

[0005] The purpose of the present utility model is to solve at least one of the technical problems existing in the prior art and to provide a muffler structure.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present utility model is as follows: a muffler structure, comprising a mounting plate, a first muffler structure, a second muffler structure, and an end cover;

[0007] The first sound-absorbing structure and the second sound-absorbing structure are connected together, the mounting plate is fixedly arranged at an end of the first sound-absorbing structure, and the end cover is arranged at an end of the second sound-absorbing structure;

[0008] The mounting plate includes an inlet, the first sound-absorbing structure includes a first cavity, the second sound-absorbing structure includes a second cavity, and the inlet, the first cavity, and the second cavity are sequentially connected;

[0009] The first sound-absorbing structure includes sound-absorbing cotton and a sound-absorbing member. The sound-absorbing cotton is arranged around the first cavity, and the sound-absorbing member is arranged around the sound-absorbing cotton. The sound-absorbing member is provided with a plurality of sound-absorbing holes.

[0010] The second sound-absorbing structure includes sound-absorbing cotton, and the sound-absorbing cotton is filled in the second cavity.

[0011] Furthermore, the first sound-absorbing structure protrudes outward from four edges of the mounting plate.

[0012] Furthermore, a plurality of mounting holes are provided on the four edges of the mounting plate.

[0013] Furthermore, a plurality of baffles are provided in the first cavity, and adjacent baffles enable the sound to propagate in a Z-shaped trajectory in the first cavity.

[0014] Furthermore, the first sound-absorbing structure further includes a breathable mesh tube, and the breathable mesh tube is arranged around the sound-absorbing component.

[0015] Furthermore, the second sound-absorbing structure includes a shell, and the second cavity is located in the shell.

[0016] Furthermore, a vacuum cavity is provided in the shell, and the vacuum cavity is provided outside the second cavity.

[0017] Furthermore, the end cover is threadedly connected to the shell.

[0018] Beneficial effects of the present invention: From the above description of the present invention, it can be seen that compared with the prior art, the silencer structure of the present invention includes a mounting plate, a first silencer structure, a second silencer structure, and an end cover; the sound propagates in the inlet, the first cavity, and the second cavity in sequence; when the sound enters the first cavity, the first silencer structure absorbs the sound and greatly reduces the noise through the sound-absorbing cotton, and discharges the low-decibel sound through the sound-absorbing holes on the sound-absorbing component; when the sound enters the second cavity, the second silencer structure absorbs and eliminates the remaining noise through the sound-absorbing cotton; the present invention adopts a two-stage silencer structure, which greatly improves the sound elimination effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic front view of the internal structure of a muffler structure in a preferred embodiment of the present utility model;

[0020] Figure 2 This is a schematic top view of a mounting plate in a preferred embodiment of the present utility model;

[0021] Figure numerals: 1 mounting plate, 2 first sound-absorbing structure, 3 second sound-absorbing structure, 4 end cover, 101 inlet, 102 mounting hole, 201 first cavity, 202 sound-absorbing cotton, 203 sound-absorbing component, 204 sound-absorbing hole, 205 baffle, 206 breathable mesh tube, 301 sound-absorbing cotton, 302 shell, 303 vacuum chamber. DETAILED DESCRIPTION

[0022] The technical solutions of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] Reference Figure 1-Figure 2 As shown, a preferred embodiment of the present utility model is a silencer structure, comprising a mounting plate 1, a first silencer structure 2, a second silencer structure 3, and an end cover 4; the first silencer structure 2 and the second silencer structure 3 are connected together, the mounting plate 1 is fixedly arranged at the end of the first silencer structure 2, and the end cover 4 is arranged at the end of the second silencer structure 3; the mounting plate 1 includes an inlet 101, the first silencer structure 2 includes a first cavity 201, the second silencer structure 3 includes a second cavity, and the inlet 101, the first cavity 201, and the second cavity are connected in sequence; the first silencer structure 2 includes sound-absorbing cotton 202 and a sound-absorbing component 203, the sound-absorbing cotton 202 is arranged around the first cavity 201, the sound-absorbing component 203 is arranged around the sound-absorbing cotton 202, and a number of sound-absorbing holes 204 are provided on the sound-absorbing component 203; the second silencer structure 3 includes sound-absorbing cotton 301, and the sound-absorbing cotton 301 is filled in the second cavity.

[0025] The muffler structure of the present invention includes a mounting plate 1, a first muffler structure 2, a second muffler structure 3, and an end cover 4; the sound propagates in the inlet 101, the first cavity 201, and the second cavity in sequence; when the sound enters the first cavity 201, the first muffler structure 2 absorbs the sound and greatly reduces the noise through the sound-absorbing cotton 202, and absorbs low-decibel sounds through the sound-absorbing holes 204 on the sound-absorbing component 203; when the sound enters the second cavity, the second muffler structure 3 absorbs and eliminates the remaining noise through the sound-absorbing cotton 301; the utility model adopts a two-stage muffler structure, which greatly improves the sound elimination effect.

[0026] As a preferred embodiment of the present invention, it may also have the following additional technical features:

[0027] In this embodiment, the first muffler structure 2 protrudes outward from the edges of the mounting plate 1, and a plurality of mounting holes 102 are provided on the edges of the mounting plate 1. By providing the mounting holes 102 on the edges of the mounting plate 1, the muffler structure can be installed on the equipment requiring muffler.

[0028] In this embodiment, a plurality of baffles 205 are provided in the first cavity 201. Adjacent baffles 205 cause sound to propagate in a Z-shaped trajectory within the first cavity 201. The baffles 205 cause sound to propagate in a Z-shaped trajectory within the first cavity 201, causing the direction of the sound to continuously change, thereby reducing the volume of the sound.

[0029] In this embodiment, the first sound-absorbing structure 2 further includes a breathable mesh tube 206, which is arranged around the sound-absorbing member 203. The breathable mesh tube 206 can prevent dust from entering the sound-absorbing holes 204, thereby preventing the sound-absorbing holes 204 from being blocked by dust and reducing the sound absorption effect.

[0030] In this embodiment, the second sound-absorbing structure 3 includes a housing 302, the second cavity being located within the housing 302, and a vacuum chamber 303 disposed within the housing 302. The vacuum chamber 303 is disposed around the second cavity. The housing 302 includes a second cavity, within which sound-absorbing cotton 301 is disposed. The vacuum chamber 303 is disposed around the outer periphery of the sound-absorbing cotton 301. The vacuum chamber 303 blocks sound propagation, ensuring that the sound is substantially absorbed by the sound-absorbing cotton 301.

[0031] In this embodiment, the end cap 4 is threadedly connected to the housing 302. The end cap 4 is threadedly connected to the housing 302 so that the end cap 4 can be removed and the silencer cotton 301 can be replaced.

[0032] Under the premise that no conflict occurs, those skilled in the art may freely combine and superimpose the above-mentioned additional technical features.

[0033] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A muffler structure, characterized in that: It comprises a mounting plate (1), a first sound-absorbing structure (2), a second sound-absorbing structure (3), and an end cover (4); The first sound-absorbing structure (2) and the second sound-absorbing structure (3) are connected together, the mounting plate (1) is fixedly arranged at the end of the first sound-absorbing structure (2), and the end cover (4) is arranged at the end of the second sound-absorbing structure (3); The mounting plate (1) includes an inlet (101), the first sound-absorbing structure (2) includes a first cavity (201), and the second sound-absorbing structure (3) includes a second cavity; the inlet (101), the first cavity (201), and the second cavity are sequentially connected; The first sound-absorbing structure (2) comprises sound-absorbing cotton (202) and a sound-absorbing member (203); the sound-absorbing cotton (202) is arranged around the first cavity (201); the sound-absorbing member (203) is arranged around the sound-absorbing cotton (202); and a plurality of sound-absorbing holes (204) are provided on the sound-absorbing member (203); The second sound-absorbing structure (3) comprises sound-absorbing cotton (301), and the sound-absorbing cotton (301) is filled in the second cavity.

2. A muffler structure according to claim 1, characterized in that: The first sound-absorbing structure (2) protrudes outward from the four edges of the mounting plate (1).

3. A muffler structure according to claim 2, characterized in that: A plurality of mounting holes (102) are provided on the four edges of the mounting plate (1).

4. A muffler structure according to claim 1, characterized in that: A plurality of baffles (205) are provided in the first cavity (201), and adjacent baffles (205) enable sound to propagate in a Z-shaped trajectory in the first cavity (201).

5. A muffler structure according to claim 1, characterized in that: The first sound-absorbing structure (2) further comprises a breathable mesh tube (206), and the breathable mesh tube (206) is arranged around the sound-absorbing component (203).

6. A muffler structure according to claim 1, characterized in that: The second sound-absorbing structure (3) comprises a shell (302), and the second cavity is located in the shell (302).

7. A muffler structure according to claim 6, characterized in that: A vacuum cavity (303) is provided in the housing (302), and the vacuum cavity (303) is provided on the periphery of the second cavity.

8. A muffler structure according to claim 6, characterized in that: The end cover (4) is threadedly connected to the housing (302).

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