Novel composite silencer

A composite muffler, a new type of technology, applied in the direction of sounding equipment, instruments, fluid heaters, etc., can solve problems such as inability to eliminate and effectively absorb high-energy sound waves, and achieve the effect of reducing wind resistance and stabilizing air pressure

Pending Publication Date: 2022-03-15
连云港市运国环保设备有限公司
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AI Technical Summary

Problems solved by technology

Impedance composite muffler is a combination of resistive muffler and resistive muffler in some way to achieve wider frequency band noise reduction. The existing technology CN202120863647.2 is an impedance composite muffler, which uses the elastic force of the shrapnel itself to dissipate the sound-absorbing cotton The roll is fixed in the sound-absorbing chamber, and the operation is simple and convenient. However, because the existing technology uses sound-insulating materials fixed on the inner wall, it cannot effectively absorb high-energy sound waves in the face of the noise generated by the vibration of the pipeline caused by the atmospheric air flow, and it cannot be based on the sound. Targeted elimination of gas at high and low frequencies

Method used

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  • Novel composite silencer
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Examples

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Embodiment

[0026] Example: Reference figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10A new composite muffler shown includes a casing 1 with openings at both ends, an air outlet assembly with a filtering function installed at the end of the casing 1 with an opening, and an automatic pressure regulating assembly is provided on the side of the casing 1, The inside of the outer shell 1 is provided with an inner shell 17, the length and width of the inner shell 17 are smaller than that of the outer shell 1, the space between the outer shell 1 and the inner shell 17 is close to vacuum, the air content is minimized, and it is filled with sound insulation cotton, the inside of the inner shell 17 is close to vacuum The end of the inner shell 17 away from the air outlet assembly is provided with a high-temperature air intake detection assembly, and the end of the inner shell 17 close to the air outlet assembly is slidably ...

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Abstract

The invention discloses a novel composite silencer, and relates to the technical field of boiler silencers, the novel composite silencer comprises a double-layer sound receiving pipe with a pit on the inner side, the sound receiving pipe can be stretched and compressed, and by changing the bending radius of the sound receiving pipe and changing the angle between the sound wave direction and the inner wall of the sound receiving pipe, noise of different degrees can be absorbed. The device further comprises an air storage barrel, a sliding piston is arranged in the air storage barrel in a sliding mode, it is guaranteed that the air pressure of the outer shell and the air pressure of the inner shell are stable through movement of the sliding piston, and the interior of the outer shell and the interior of the inner shell are both in a nearly-vacuum state. And targeted elimination is carried out according to high and low frequencies of sound.

Description

technical field [0001] The invention relates to the technical field of boiler mufflers, in particular to a novel composite muffler. Background technique [0002] Boiler room noise control refers to the process of using various methods to keep the noise generated by boiler room facilities during operation within the allowable range. It is an important part of noise control in the metallurgical industry. Boiler blowers and induced draft fans (hoods) Body noise, and drive motor noise. Both the blower and the induced draft fan are centrifugal fans. Including: aerodynamic noise radiated by the air inlet and outlet; mechanical noise radiated by the casing, pipe wall and motor bearing; solid-state sound caused by foundation vibration. Among them, the aerodynamic noise of the air inlet and outlet is the strongest. As a main noise reduction functional component, the muffler is widely used in various fields, such as exhaust noise reduction for engines, etc. The muffler meets the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/16F22B37/00F24H9/00
CPCG10K11/16F22B37/00F24H9/0005
Inventor 谢汝兴朱运国朱小艳
Owner 连云港市运国环保设备有限公司
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