Silencer

Abstract

The utility model discloses a silencer, relates to the technical field of air outlet pipelines, and aims to solve the problems that in the prior art, an air outlet pipeline of an existing air outlet device is prone to being impacted by high-pressure air to generate a large amount of noise and vibration and is not quiet and reliable enough in use. The silencing pipe body comprises a waterproof cloth wrapping layer, silencing cotton is wrapped on the inner side of the waterproof cloth wrapping layer, spiral springs are arranged on the inner side of the silencing cotton, the spiral springs support the inner side of the silencing cotton to form a hollow air channel, and the distance between the spiral springs is in a stroke wave shape formed by naturally protruding of the silencing cotton. The waterproof cloth wrapping layer is waterproof and windproof.

Description

Technical Field

[0001] The utility model relates to the technical field of air outlet pipes, and specifically relates to a silencer. Background Art

[0002] The inner tube of a conventional silencing air duct is a perforated aluminum foil hose, with glass wool in the middle and a single-sided aluminum foil outer skin on the outside. The length is 10m, the glass wool is exposed outside, and the interface is not treated;

[0003] For example, the application publication number is CN212960268U, a silencing air duct, including a pipe body. The pipe body is sequentially provided with an inner liner layer, a sound insulation layer, a secondary sound absorption layer, and an outer jacket protection layer from the inside to the outside. The secondary sound absorption layer is a cavity structure; both ends of the pipe body are provided with fixing seats; the outer jacket protection layer is formed by winding double-sided aluminum foil and steel wires; the steel wires serve as a skeleton to form a cavity structure of the secondary sound absorption layer between the sound insulation layer and the outer jacket protection layer;

[0004] The above application has a reasonable structure. The inner liner layer avoids the generation of secondary noise. The sound insulation layer can absorb medium and high frequencies. The cavity structure of the secondary sound absorption layer is beneficial to improving the absorption of low frequencies, thus achieving the silencing effect. The fixing seat, as a standardized interface, is convenient for installation, not prone to air leakage and falling off. However, the air outlet pipe of the current air outlet device is easily impacted by high-pressure air, generating a large amount of noise and vibration. The above application cannot relieve the impact of high-pressure air and is not quiet and reliable enough during use. Therefore, there is an urgent need in the market to develop a silencer to help people solve existing problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a silencer to solve the problem that the air outlet pipe of the current air outlet device is easily impacted by high-pressure air, generating a large amount of noise and vibration, and is not quiet and reliable enough during use as mentioned in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A silencer, including a silencing pipe body. The silencing pipe body includes a waterproof cloth wrapping layer. The inner side of the waterproof cloth wrapping layer is wrapped with sound-absorbing cotton. A spiral spring is arranged inside the sound-absorbing cotton. In the spacing of the spiral spring, there are natural convex travel waveforms of the sound-absorbing cotton.

[0007] Through the above technical solution, the purpose is that when using the air outlet device, the silencing pipe body is connected to the device. When the air passes through the inner diameter air duct of the spiral spring, there are natural convex waveforms of the sound-absorbing cotton in the spacing of the spiral spring, which can block and decompress the air, so that the sound coming out of the air outlet will be greatly reduced, thus solving the problems of noise and vibration, and making this silencer more quiet and reliable to use.

[0008] In a preferred embodiment, the present utility model can be further configured as follows: The spiral spring supports the inner side of the sound-absorbing cotton to form a hollow air duct.

[0009] Through the above technical solution, the spiral spring can be bent, and the inner diameter air duct will not be deformed even at 90 degrees, which can make the air duct unobstructed from beginning to end and improve the stability of air delivery.

[0010] In a preferred embodiment, the present utility model can be further configured as follows: The waterproof cloth layer is waterproof and windproof.

[0011] Through the above technical solution, the outside of the sound-absorbing cotton is a waterproof, windproof and airtight cloth, which can prevent the internal air flow from leaking and can also play a role in rain and waterproofing, improving the use reliability.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. When the sound-absorbing pipe body of this utility model is connected to the air outlet device, when the wind passes through the inner diameter air duct of the spiral spring, the sound-absorbing cotton naturally protrudes in the space between the spiral springs to form a wave shape, which can block and decompress the air, so that the sound coming out of the air outlet will be greatly reduced, thus solving the problems of noise and vibration, and making this silencer more quiet and reliable in use.

[0014] 2. The spiral spring of this utility model can be bent, and the inner diameter air duct will not be deformed even at 90 degrees, which can make the air duct unobstructed from beginning to end and improve the stability of air delivery.

[0015] 3. The outside of the sound-absorbing cotton of this utility model is a waterproof, windproof and airtight cloth, which can prevent the internal air flow from leaking and can also play a role in rain and waterproofing, improving the use reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an overall schematic diagram of a silencer of the present utility model;

[0017] Figure 2 is a cross-sectional view of the side view of a silencer of the present utility model;

[0018] Figure 3 is a cross-sectional view of the cross-section of a silencer of the present utility model;

[0019] In the figure: 1, sound-absorbing pipe body; 2, waterproof cloth layer; 3, sound-absorbing cotton; 4, spiral spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0021] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0022] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, terms such as "installed", "provided with", "sheathed / connected", "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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0023] Please refer to Figures 1 - 3 , an embodiment provided by the present utility model: A silencer, including a silencing pipe body 1, the silencing pipe body 1 includes a waterproof cloth wrapping layer 2, a sound-absorbing cotton 3 is wrapped inside the waterproof cloth wrapping layer 2, a spiral spring 4 is arranged inside the sound-absorbing cotton 3, and there are natural convex travel waves of the sound-absorbing cotton 3 in the spacing of the spiral spring 4.

[0024] Please refer to Figure 2 and Figure 3 , the spiral spring 4 supports to form a hollow air duct inside the sound-absorbing cotton 3.

[0025] Please refer to Figure 2 and Figure 3 , the waterproof cloth wrapping layer 2 is waterproof and windproof.

[0026] Working principle: When in use, when using an air outlet device, the silencing pipe body 1 is connected to the device. When the wind passes through the inner diameter air duct of the spiral spring 4, there are natural convex waves of the sound-absorbing cotton 3 in the spacing of the spiral spring 4, which can block and decompress the air, so that the sound coming out of the air outlet will be greatly reduced, thus solving the problems of noise and vibration, making this silencer more quiet and reliable in use. At the same time, the outside of the sound-absorbing cotton 3 is a waterproof and windproof and airtight waterproof cloth wrapping layer 2, which can prevent the internal air flow from leaking and can also play a role in rain and water prevention, improving the use reliability.

[0027] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A silencer, comprising a silencer pipe body (1), characterized in that: The silencer pipe body (1) comprises a waterproof cloth wrapping layer (2), the inner side of the waterproof cloth wrapping layer (2) is wrapped with silencer cotton (3), the inner side of the silencer cotton (3) is provided with a coil spring (4), and the spacing of the coil springs (4) has a naturally raised wave-like stroke of the silencer cotton (3).

2. A muffler according to claim 1, characterized in that: The coil spring (4) supports the inner side of the sound-absorbing cotton (3) to form a hollow air duct.

3. A muffler according to claim 1, characterized in that: The waterproof cloth wrapping layer (2) is waterproof and windproof.

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