A denitrification acoustic blowing silencing device

Abstract

This utility model discloses a denitrification acoustic soot blowing silencing device, including a flue wall, a horn body installed on the flue wall, a sound wave generator set at one end of the horn body, a fixed bracket sleeved on the outer wall of the horn body, the fixed bracket having a ring-shaped cross-section, the fixed bracket being installed on the inner wall of the flue wall, a third silencing layer fixedly connected to the inner wall of the fixed bracket, the third silencing layer being fixedly connected to a second silencing layer, a first silencing layer fixedly connected to the inner side of the second silencing layer, silencing support cotton fixedly connected to the inner side of the first silencing layer, a second silencing layer set inside the third silencing layer, a first silencing layer set inside the second silencing layer, and silencing support cotton set inside the first silencing layer, the silencing support cotton wrapping the outer wall of the horn body, and a silencer set on one side of the horn body. This device can reduce the noise generated during use, thereby avoiding noise harm to the workers' health and improving safety during use.

Description

Technical Field

[0001] This utility model relates to the field of denitrification technology, specifically a denitrification acoustic ash blowing and silencing device. Background Technology

[0002] Denitrification refers to the process of removing nitrogen oxides (NOx) from exhaust gases. These nitrogen oxides mainly include nitric oxide (NO) and nitrogen dioxide (NO2), which are among the major pollutants that cause air pollution. They can lead to photochemical smog, acid rain, and harm to human health. Therefore, reducing NOx emissions is a very important environmental protection measure in many industrial production processes, especially those involving combustion, such as thermal power plants, steel plants, and cement plants.

[0003] In the denitrification system, the flue gas needs to pass through the flue, which contains a lot of dust. When the dust passes through the flue, it will adhere to the inner wall of the flue. Therefore, a soot blowing device is needed for cleaning. The existing soot blowing device is generally a sonic soot blowing device. The sonic soot blowing device is mainly composed of a sonic generator and a horn. During operation, it will generate a lot of noise, which will affect the health of the staff. Improvement is needed. Utility Model Content

[0004] The purpose of this invention is to provide a denitrification acoustic soot blowing silencing device to solve the problem of excessive noise during the use of the acoustic soot blowing device mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a denitrification acoustic soot blowing silencing device, comprising a flue wall, a horn body installed on the flue wall, a sound wave generator provided at one end of the horn body, a fixed bracket sleeved on the outer wall of the horn body, the fixed bracket being installed on the inner wall of the flue wall, a third silencing layer fixedly connected to the inner wall of the fixed bracket, a second silencing layer provided inside the third silencing layer, a first silencing layer provided inside the second silencing layer, silencing support cotton provided inside the first silencing layer, the silencing support cotton wrapping the outer wall of the horn body, and a silencer provided on one side of the horn body.

[0006] Preferably, the fixed bracket has a ring-shaped cross-section, and the inner diameter of the fixed bracket is larger than the maximum diameter of the horn body.

[0007] Preferably, the third sound-absorbing layer is fixedly connected to the second sound-absorbing layer, the first sound-absorbing layer is fixedly connected to the inner side of the second sound-absorbing layer, and the sound-absorbing support cotton is fixedly connected to the inner side of the first sound-absorbing layer.

[0008] Preferably, a corrugated connecting pipe is attached and fixed to one side of the muffler, and a sound insulation layer is attached to the inner wall of the corrugated connecting pipe.

[0009] Preferably, one end of the corrugated connecting pipe is glued and fixed to the speaker body, and the muffler is movably connected to the speaker body through the corrugated connecting pipe.

[0010] Preferably, both ends of the outer wall of the silencer are fixedly connected to a support frame, and one end of the support frame is fixed to the flue wall.

[0011] Preferably, the inner wall of the sound-absorbing support cotton has an inclined structure in cross-section, and the sound-absorbing support cotton matches the outer wall structure of the speaker.

[0012] Compared with the prior art, the beneficial effects of this utility model are: (1) This device can reduce the noise generated during use, thereby avoiding the harm of noise to the workers' bodies and improving the safety during use.

[0013] (2) This device improves the sound absorption effect of the speaker body by setting a fixed bracket on the outer wall of the speaker body and setting a sound-absorbing support cotton, a first sound-absorbing layer, a second sound-absorbing layer and a third sound-absorbing layer between the fixed bracket and the speaker body, thereby avoiding the speaker body from generating a large amount of noise that could cause harm to the workers.

[0014] (3) This device can reduce the noise transmitted from the speaker body by elastically connecting a muffler to one side of the speaker body, thereby improving the noise reduction effect of this device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a denitrification acoustic soot blowing silencing device according to the present invention; Figure 2 This is a cross-sectional view of a denitrification acoustic blowing silencing device according to the present invention; Figure 3 This is a side view of the connection between the horn body and the fixed bracket of the denitrification acoustic blowing silencing device of this utility model; Figure 4 This is a side view of the corrugated connecting pipe of a denitrification acoustic blowing silencing device according to the present invention.

[0016] In the diagram: 1. Sound wave generator; 2. Speaker body; 3. Flue wall; 4. Fixing bracket; 5. Silencer; 6. Corrugated connecting pipe; 7. Support frame; 8. Silencer support cotton; 9. First silencing layer; 10. Second silencing layer; 11. Third silencing layer; 12. Sound insulation layer. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4This utility model provides a technical solution: a denitrification acoustic soot blowing silencing device, including a flue wall 3, a horn body 2 installed on the flue wall 3, a sound generator 1 set at one end of the horn body 2, the left side of the sound generator 1 for connecting a compressed air input pipe, the sound generator 1 being fixed to the flue by bolts, a fixing bracket 4 sleeved on the outer wall of the horn body 2, the fixing bracket 4 having a ring-shaped cross-section, the inner diameter of the fixing bracket 4 being larger than the maximum diameter of the horn body 2, the fixing bracket 4 being made of metal, the fixing bracket 4 facilitating the installation of the silencing structure while avoiding direct contact with the horn body 2, ensuring the soot blowing effect of the horn body 2, the fixing bracket 4 being installed in the flue. The inner wall of wall 3 and the inner wall of the fixing bracket 4 are fixedly connected to a third sound-absorbing layer 11. The third sound-absorbing layer 11 is fixedly connected to the second sound-absorbing layer 10. The inner side of the second sound-absorbing layer 10 is fixedly connected to a first sound-absorbing layer 9. The inner side of the first sound-absorbing layer 9 is fixedly connected to a sound-absorbing support cotton 8. In this structure, the first sound-absorbing layer 9 is made of porous rubber sheet, the second sound-absorbing layer 10 is made of wooden sound-absorbing board, and the third sound-absorbing layer 11 is made of metal micro-perforated board. The sound-absorbing effect of the speaker body 2 can be improved by the first sound-absorbing layer 9, the second sound-absorbing layer 10, and the third sound-absorbing layer 11, thereby avoiding the speaker body 2 from generating large noise. The second sound-absorbing layer 10 is set inside the third sound-absorbing layer 11. A first sound-absorbing layer 9 is provided inside the sound-absorbing layer 10, and a sound-absorbing support cotton 8 is provided inside the first sound-absorbing layer 9. The inner wall of the sound-absorbing support cotton 8 is inclined in cross-section. The sound-absorbing support cotton 8 matches the outer wall structure of the speaker body 2. This structure can ensure the sound-absorbing support cotton 8's sound-absorbing and noise-reducing effect on the speaker body 2. The sound-absorbing support cotton 8 can be made of high-temperature resistant glass wool. The sound-absorbing support cotton 8 is wrapped around the outer wall of the speaker body 2. A muffler 5 is provided on one side of the speaker body 2. A corrugated connecting pipe 6 is pasted and fixed on one side of the muffler 5. A sound insulation layer 12 is pasted on the inner wall of the corrugated connecting pipe 6. The sound insulation layer 12 is made of sound insulation felt and is fixed to the inner wall of the corrugated connecting pipe 6 with glue. The corrugated connecting pipe 6 can avoid the rigid connection affecting the sound wave propagation effect of the speaker body 2. The sound insulation effect of the corrugated connecting pipe 6 can be improved by setting the sound insulation layer 12. One end of the corrugated connecting pipe 6 is glued and fixed to the speaker body 2. The silencer 5 is connected to the speaker body 2 through the corrugated connecting pipe 6. This structure can achieve the purpose of noise reduction after the sound wave is propagated, thereby reducing the harm of noise to the workers. The silencer 5 can be an impedance composite silencer. Both ends of the outer wall of the silencer 5 are fixedly connected to the support frame 7. One end of the support frame 7 is fixed to the flue wall 3. This structure can ensure the stability of the silencer 5 installation through the support frame 7.

[0019] Working principle: When using this denitrification sonic blowing silencing device, compressed air first enters the sound generator 1 to generate sound waves, which then diffuse into the flue through the horn body 2. When the sound waves enter the horn body 2, they pass through the fixed bracket 4. At this time, part of the noise generated diffuses to the outside of the fixed bracket 4, and the other part diffuses to the silencer 5. The noise that diffuses to the silencer 5 is first partially absorbed by the sound insulation layer 12, and then silenced by the silencer 5. The noise that diffuses to the outside of the fixed bracket 4 is then silenced by the first sound-absorbing layer 9, the second sound-absorbing layer 10, and the third sound-absorbing layer 11 in sequence. This greatly reduces the noise generated when the horn body 2 is working and improves the safety of the operators.

[0020] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A denitrification acoustic soot blowing silencing device, comprising a flue wall (3), a horn body (2) installed on the flue wall (3), and a sound wave generator (1) provided at one end of the horn body (2), characterized in that: The outer wall of the horn body (2) is fitted with a fixed bracket (4), which is installed on the inner wall of the flue wall (3). The inner wall of the fixed bracket (4) is fixedly connected with a third sound-absorbing layer (11). A second sound-absorbing layer (10) is provided inside the third sound-absorbing layer (11). A first sound-absorbing layer (9) is provided inside the second sound-absorbing layer (10). A sound-absorbing support cotton (8) is provided inside the first sound-absorbing layer (9). The sound-absorbing support cotton (8) is wrapped around the outer wall of the horn body (2). A silencer (5) is provided on one side of the horn body (2).

2. The denitrification acoustic soot blowing silencing device according to claim 1, characterized in that: The fixed bracket (4) has a ring structure in cross-section, and the inner diameter of the fixed bracket (4) is greater than the maximum diameter of the horn body (2).

3. The denitrification acoustic soot blowing silencing device according to claim 1, characterized in that: The third sound-absorbing layer (11) is fixedly connected to the second sound-absorbing layer (10), and the first sound-absorbing layer (9) is fixedly connected to the inner side of the second sound-absorbing layer (10), and the sound-absorbing support cotton (8) is fixedly connected to the inner side of the first sound-absorbing layer (9).

4. The denitrification acoustic soot blowing silencing device according to claim 1, characterized in that: A corrugated connecting pipe (6) is attached to one side of the muffler (5), and a sound insulation layer (12) is attached to the inner wall of the corrugated connecting pipe (6).

5. The denitrification acoustic soot blowing silencing device according to claim 4, characterized in that: One end of the corrugated connecting pipe (6) is attached and fixed to the speaker body (2), and the muffler (5) is movably connected to the speaker body (2) through the corrugated connecting pipe (6).

6. The denitrification acoustic soot blowing silencing device according to claim 1, characterized in that: Both ends of the outer wall of the silencer (5) are fixedly connected to support frames (7), and one end of the support frame (7) is fixed to the flue wall (3).

7. The denitrification acoustic soot blowing silencing device according to claim 1, characterized in that: The sound-absorbing support cotton (8) has an inclined inner wall structure when viewed in cross-section, and the sound-absorbing support cotton (8) matches the outer wall structure of the speaker body (2).

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