Multi-frequency noise suppression chemical silencer

Abstract

The utility model provides a chemical silencer for multi-frequency noise suppression, which relates to the technical field of silencers and comprises a main body, an external silencing pipe arranged at the top of the main body, a connecting pipe arranged at the bottom of the main body, supporting legs arranged at the bottom of the outer side of the main body, a supporting base arranged at the bottoms of the supporting legs, and a resonance sound absorber arranged at the top end in the main body. A cavity is formed in the main body, a built-in silencing barrel is arranged in the center of the cavity, a sound insulation plate is arranged on the outer side of the silencing barrel, a damping spring is arranged at the bottom of the sound insulation plate, multiple pieces of silencing cotton, a filtering layer, the silencing barrel, a sound absorber and a silencing pipe are adopted, multi-layer inhibition on multi-frequency noise is achieved, and noise is simply and effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mufflers, in particular to a chemical muffler for suppressing multi-frequency noise. Background Art

[0002] According to Chinese patent number CN104361885B, a silencer effectively addresses noise pollution and energy waste caused by excess steam after steam has completed its work in industries such as power, chemical, metallurgy, and textiles. It can also serve as a terminal muffler for some power noise sources. The steam silencer comprises, from bottom to top, a water level control chamber, an anechoic chamber, an internal multifunctional working chamber, sound-absorbing panels, and a steam-water separator. These components are enclosed in an outer shell with an exhaust vent at the top.

[0003] The above-mentioned comparative documents and prior art have the following technical problems: the existing chemical industry has noises of multiple frequencies, which often bother workers at work and require silencers to solve the problem. However, the existing silencers cannot suppress all the noises of multiple frequencies, and the noises of multiple frequencies will also generate a certain amount of energy, which will cause the silencer to vibrate to a certain extent, and the vibration will affect its work. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a chemical muffler with multi-frequency noise suppression.

[0005] In order to achieve the above-mentioned purpose, the present utility model adopts the following technical solutions: a multi-frequency noise suppression chemical silencer, comprising a main body, an external silencer pipe is provided on the top of the main body, a connecting pipe is provided on the bottom of the main body, a support leg is provided on the bottom of the outer side of the main body, a support base is provided on the bottom of the support leg, a resonance sound absorber is provided on the top inner side of the main body, a cavity is provided inside the main body, a built-in silencer is provided in the center of the cavity, a sound insulation board is provided on the outside of the silencer, and a shock-absorbing spring is provided on the bottom of the sound insulation board.

[0006] Preferably, a first sound insulation cotton is provided on the inner wall of the main body, the top and the bottom of the main body are both sound insulation boards, and the main body and the supporting legs are connected by welding.

[0007] Preferably, the external silencer pipe comprises a pipe body, a silencer hole is provided on the outside of the pipe body, and a cover plate is provided on the top of the pipe body.

[0008] Preferably, the external silencer pipe passes through the top of the main body to the resonance sound absorber, and the external silencer pipe is connected to the main body through the resonance sound absorber.

[0009] Preferably, a second sound-absorbing cotton is provided inside the connecting pipe, a first filter layer is provided inside the connecting pipe, and a second filter layer is provided on top of the first filter layer.

[0010] Preferably, the connecting pipe is connected to the built-in silencer, the inner diameter of the connecting pipe is consistent with the inner diameter of the silencer, a first silencer and a second silencer are provided inside the cavity, the connecting pipe is communicated with the first silencer, and the outside of the first silencer and the outside of the second silencer are both provided with through holes.

[0011] Preferably, the end of the first silencer is connected to the sound insulation board, and the end of the second silencer is connected to the resonance sound absorber.

[0012] Beneficial effects

[0013] In the utility model, multiple silencer cottons, filter layers, silencers, sound absorbers and silencer pipes are adopted. Multi-frequency noise first enters the interior of the main body through the connecting pipe. The multi-frequency noise will pass through the connecting pipe and the sound-absorbing cotton inside the main body, and also through the filter layer to filter out oil and tiny particles in the gas and filter and silence them. Then, it passes through the cavity and the first silencer in the cavity. The multi-frequency noise can only enter the second silencer through the through hole due to the sound insulation board, and then enter the resonant sound absorber through the second silencer. Finally, when it comes out through the external silencer pipe, the noise has been reduced a lot, and noises of different frequencies are interfered with each other, which is better for noise reduction.

[0014] In the utility model, support legs and shock-absorbing springs are adopted to reduce the vibration of noise and avoid interference with the muffler. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the utility model;

[0016] Figure 2 This is an axonometric drawing of the present utility model;

[0017] Figure 3 This is the internal structure diagram of the utility model;

[0018] Figure 4 It is a cross-sectional view of the connecting pipe of the utility model.

[0019] Legend:

[0020] 1. Main body; 101. First sound-proof cotton; 2. External silencer; 201. Tube body; 202. Silencer hole; 203. Cover plate; 3. Connecting pipe; 301. Second sound-proof cotton; 302. First filter layer; 303. Second filter layer; 4. Support legs; 5. Support base; 6. Resonance sound absorber; 7. Cavity; 8. Built-in silencer; 801. First silencer; 802. Second silencer; 803. Through hole; 9. Sound insulation board; 10. Shock-absorbing spring. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0022] The specific embodiments of the present utility model are described below with reference to the accompanying drawings. Specific embodiment one:

[0024] Reference Figure 1-4The utility model provides a multi-frequency noise suppression chemical muffler, including a main body 1, a first sound insulation cotton 101 is provided on the inner wall of the main body 1, an external sound-absorbing pipe 2 is provided on the top of the main body 1, the external sound-absorbing pipe 2 includes a pipe body 201, a sound-absorbing hole 202 is provided on the outside of the pipe body 201, a cover plate 203 is provided on the top of the pipe body 201, a connecting pipe 3 is provided at the bottom of the main body 1, a second sound-absorbing cotton 301 is provided inside the connecting pipe 3, a first filter layer 302 is provided inside the connecting pipe 3, a second filter layer 303 is provided on the top of the first filter layer 302, a supporting leg 4 is provided on the outer bottom of the main body 1, and the main body 1 is connected to the support leg 4 by welding, and a support base 5 is provided at the bottom of the support leg 4. The support leg 4 and the support base 5 make the whole more stable. A resonance sound absorber 6 is provided at the top of the inner part of the main body 1, and the external silencer pipe 2 passes through the top of the main body 1 to the resonance sound absorber 6. The external silencer pipe 2 is connected to the main body 1 through the resonance sound absorber 6. A cavity 7 is provided inside the main body 1, and a built-in silencer 8 is provided at the center of the cavity 7. The connecting pipe 3 is connected to the built-in silencer 8. The inner diameter of the connecting pipe 3 is consistent with the inner diameter of the built-in silencer 8. The first silencer 801 and the second silencer are provided inside the cavity 7. The outer side of the first silencer 801 and the outer side of the second silencer 802 are provided with a through hole 803. The outer side of the built-in silencer 8 is provided with a sound insulation board 9. The end of the first silencer 801 is connected to the sound insulation board 9. The end of the second silencer 802 is connected to the resonance sound absorber 6. The top of the main body 1 and the bottom of the main body 1 are both sound insulation boards 9. The bottom of the sound insulation board 9 is provided with a shock-absorbing spring 10. The shock-absorbing spring 10 reduces the vibration of the noise and avoids interference with the silencer. Multiple silencer cotton, filter layers, silencers, sound absorbers and silencers are used. Tube, multi-frequency noise first enters the interior of the main body 1 through the connecting tube 3, and the multi-frequency noise will pass through the connecting tube 3 and the sound-absorbing cotton inside the main body 1, and also through the filter layer to filter the oil and tiny particles in the gas and filter and silence them, and then pass through the cavity 7, through the first silencer 801 in the cavity 7, the multi-frequency noise can only enter the second silencer 802 through the through hole 803 due to the sound insulation board 9, and then enter the resonance sound absorber 6 through the second silencer 802, and finally come out through the external silencer tube 2, which has reduced a lot of noise, and makes noises of different frequencies interfere with each other, so as to better reduce noise. Specific embodiment two:

[0026] Reference Figure 1 A sealed aquifer can be installed inside, with switches controlled by the outside at the bottom and top. The bottom switch extends above the water level, so that noise can enter the water on the horizontal plane and go out from the top switch after reducing the noise, which more effectively reduces the noise.

[0027] In summary:

[0028] 1. The use of multiple silencer cottons, filter layers, silencers, absorbers and silencer tubes achieves multi-layer suppression of multi-frequency noise and simple and effective noise reduction;

[0029] 2. The support legs 4 and the shock-absorbing springs 10 are used to reduce the vibration of the noise and avoid interference with the muffler.

[0030] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A chemical muffler for multi-frequency noise suppression, comprising a main body (1), characterized in that: The top of the main body (1) is provided with an external silencer pipe (2), the bottom of the main body (1) is provided with a connecting pipe (3), the outer bottom of the main body (1) is provided with a supporting leg (4), the bottom of the supporting leg (4) is provided with a supporting base (5), the top of the interior of the main body (1) is provided with a resonant sound absorber (6), the interior of the main body (1) is provided with a cavity (7), the center of the cavity (7) is provided with a built-in silencer (8), the outer side of the built-in silencer (8) is provided with a sound insulation board (9), and the bottom of the sound insulation board (9) is provided with a shock-absorbing spring (10).

2. The multi-frequency noise suppression chemical muffler according to claim 1, characterized in that: A first sound insulation cotton (101) is provided on the inner wall of the main body (1), the top of the main body (1) and the bottom of the main body (1) are both sound insulation boards (9), and the main body (1) and the supporting legs (4) are connected by welding.

3. The multi-frequency noise suppression chemical muffler according to claim 1, characterized in that: The external silencer pipe (2) comprises a pipe body (201), a silencer hole (202) is provided on the outside of the pipe body (201), and a cover plate (203) is provided on the top of the pipe body (201).

4. The multi-frequency noise suppression chemical muffler according to claim 3, characterized in that: The external silencer pipe (2) passes through the top of the main body (1) to the resonance sound absorber (6), and the external silencer pipe (2) and the main body (1) are connected via the resonance sound absorber (6).

5. The multi-frequency noise suppression chemical muffler according to claim 1, characterized in that: A second sound-absorbing cotton (301) is provided inside the connecting pipe (3), a first filter layer (302) is provided inside the connecting pipe (3), and a second filter layer (303) is provided on the top of the first filter layer (302).

6. The multi-frequency noise suppression chemical muffler according to claim 5, characterized in that: The connecting pipe (3) is connected to the built-in silencer (8); the inner diameter of the connecting pipe (3) is consistent with the inner diameter of the built-in silencer (8); a first silencer (801) and a second silencer (802) are provided inside the cavity (7); the connecting pipe (3) is in communication with the first silencer (801); and through holes (803) are provided on the outside of the first silencer (801) and the outside of the second silencer (802).

7. The multi-frequency noise suppression chemical muffler according to claim 6, characterized in that: The end of the first silencer (801) is connected to the sound insulation board (9), and the end of the second silencer (802) is connected to the resonance sound absorber (6).

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