Low-noise silencer

A muffler and muffler pipe technology, which is applied to instruments, sounding equipment, chemical instruments and methods, etc., can solve the problems of reducing the working efficiency of the muffler, the muffler's poor muffler effect, and the muffler being easy to block the muffler. Blockage, not easy to block, the effect of ensuring the elimination effect

Pending Publication Date: 2021-11-05
连云港久盛电力辅机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the internal environment of existing power plants and chemical plants contains a large amount of granular impurities, which can easily block the holes inside the muffler when they enter the muffler, reducing the working efficiency of the muffler. good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] see Figure 1-8 , a low-noise muffler according to an embodiment of the present invention, comprising a circular first muffler pipe 1 and a circular second muffler pipe 2, the diameter of the first muffler pipe 1 is smaller than the diameter of the second muffler pipe 2 , and the first silencing pipe 1 and the second silencing pipe 2 are connected by installing a sealing mechanism, and the inner walls of the first silencing pipe 1 and the second silencing pipe 2 are provided with first sound-absorbing cotton 3. An inlet pipe 4 is installed on the first muffler pipe 1, an outlet pipe 5 is installed on the second muffler pipe 2, and a first muffler plate 6 with a sound hole is provided inside the first muffler pipe 1 , the second silencing plate 7 and the third silencing plate 8, the inside of the first silencing pipe 1 is divided into the first silencing chamber 9, the first silencing chamber 9 and the third silencing plate 8 by the first silencing plate 6, the second si...

Embodiment 2

[0036] see Figure 1-5 , the sound-absorbing board 13 includes an upper noise reduction board 26, a porous foam board 27 and a noise reduction board 28, and the upper noise reduction board 26, the porous foam board 27 and the noise reduction board 28 are formed as a molding , the upper noise reduction plate 26 and the noise reduction plate 28 are provided with a secondary sound hole, and the upper noise reduction plate 26 and the noise reduction plate 28 are both set in a cavity shape. Both the upper noise reduction board 26 and the noise reduction board 28 are provided with a cross-shaped hollow sound insulation column 29, the inner wall of the hollow sound insulation column 29 is provided with a sound insulation cotton block, and the first noise reduction mechanism includes a The sound insulation cover 30 on the inner wall of the first muffler cavity 9, the sound insulation cover 30, the inlet pipe 4 is provided with an air inlet 31, and the outer wall of the inlet pipe 4 is...

Embodiment 3

[0039] see Figure 5 and Figure 7 , the inside of the second muffler pipe 2 is provided with several sound insulation boards 40, one of the sound insulation boards 40 is provided with a flow equalizer 41, and the inside of the sound insulation plate 40 located on the side of the flow equalizer 41 is filled with Catalyst layer 42, another sound insulation plate 40 is filled with activated carbon mesh 43, the filter plate 15 includes a circular plate 44 equal to the inner diameter of the first muffler pipe 1, and the middle part of the circular plate 44 is embedded There is a filter screen, the outer surface of the bottom of the inlet pipe 4 is provided with a circular arc 45, and the bottom of the circular plate 44 is fixed with a circular arc 46 that matches the circular arc 45. A mounting piece 47 is fixedly arranged on the outer surface wall of the circular arc plate 46, and a sealing gasket 48 is arranged on the outer wall of the circular arc plate 46, and the sealing gas...

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PUM

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Abstract

The invention discloses a low-noise silencer. The low-noise silencer comprises a first circular silencing pipe and a second circular silencing pipe, wherein the diameter of the first silencing pipe is smaller than that of the second silencing pipe, and the first silencing pipe and the second silencing pipe are connected through an installation sealing mechanism; first sound absorption cotton is arranged on the inner wall of the first hush pipe and the inner wall of the second hush pipe, an inlet pipe is installed on the first hush pipe, and an outlet pipe is installed on the second hush pipe. The low-noise silencer is advantaged in that the working principle of a sound absorption plate in a third noise reduction cavity is the same as that of a sound absorption plate in a second small noise cavity, then the sound absorption plate enters a fourth noise reduction cavity, noise reduction is conducted again through an arranged second noise reduction mechanism, therefore, the good noise absorption effect is achieved, finally, low-noise frequency band noise enters a second noise reduction pipe, and the first sound absorption cotton in the second silencing pipe achieves final silencing so that the noise is reduced to be extremely low.

Description

technical field [0001] The invention relates to the field of mufflers, in particular to a low-noise muffler. Background technique [0002] The muffler is a device that prevents sound transmission and allows airflow to pass through. It is an important measure to eliminate aerodynamic noise. In the fields of power plants and chemical plants, mufflers are often used, and the principle of mufflers in this field is It is composed of two pipes with different lengths. The two pipes are separated first and then merged, so that the two columns of sound waves cancel each other out when they are superimposed and interfere with each other to weaken the sound intensity and reduce the sound, thereby achieving the effect of noise reduction. Moreover, the internal environment of existing power plants and chemical plants contains a large amount of granular impurities, which can easily block the holes inside the muffler when they enter the muffler, reducing the working efficiency of the muffl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/16G10K11/162G10K11/175B01D46/00B01D46/12B01D53/86
CPCG10K11/161G10K11/162G10K11/175B01D46/12B01D53/86
Inventor 谢其志谢庆杰曹道义武猛马启东张同千
Owner 连云港久盛电力辅机有限公司
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