Porous composite spiral silencer with remarkable noise reduction effect

Abstract

A porous composite spiral silencer with a remarkable noise reduction effect comprises an air guide pipeline which is integrally arranged in a spiral shape, and butt flanges which can be conveniently communicated with an external ventilation pipeline are installed at the two ends of the air guide pipeline. The outer side of the air guide pipeline is sleeved with a silencing barrel, a silencing gap is reserved between the silencing barrel and the air guide pipeline, a plurality of partition plates fixedly connected with the air guide pipeline are arranged on the silencing barrel at the silencing gap at intervals, and silencing holes are formed in the air guide pipeline and the silencing barrel; the outer side of the silencing barrel is further sleeved with a sound insulation shell, a sound absorption gap is reserved between the inner wall of the sound insulation shell and the outer side of the silencing barrel, a sound absorption plate is installed on the inner wall, at the sound absorption gap, of the sound insulation shell, and a sound insulation layer is further installed on the outer wall of the sound insulation shell. Noise generated when air flows at a high speed can be rapidly absorbed and consumed, the efficient noise reduction effect is achieved, the comfort level of the working environment is improved, and the physical and psychological health of operators is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of muffler, especially a porous composite spiral muffler with remarkable noise reduction effect. BACKGROUND

[0002] In the modern industrial field, especially in the power, chemical, metallurgical and other industries, the high-speed flow of air is an inevitable link in the production process, especially in the process of air intake and exhaust of power auxiliary machines (generator set, steam turbine auxiliary machine, etc.), however, this link is often accompanied by high-intensity noise pollution, and strong turbulent noise will be generated when air flows at high speed in the pipeline, which poses a serious threat to the working environment, the health of the operators and the surrounding ecological environment.

[0003] Traditional noise control measures, such as sound barriers and soundproof covers, can alleviate the noise problem to some extent, but they often have limitations such as large land occupation, high cost and complex maintenance, and secondly, although there are various noise absorbers with different structures in the prior art to deal with this problem, their structures are relatively simple and the noise reduction effect is very limited, making it more and more difficult to meet the modern industrial demand for efficient, environmentally friendly and economical noise reduction.

[0004] Therefore, it is urgent to develop efficient and reliable noise reduction equipment. INVENTION CONTENTS

[0005] The utility model solves the technical problem of the prior art and provides a porous composite spiral muffler with remarkable noise reduction effect, which can quickly absorb and consume the noise generated by the high-speed flow of air, achieve efficient noise reduction effect, improve the comfort of the working environment and protect the physical and mental health of the operators.

[0006] The utility model solves the technical problem by the following technical scheme. The utility model is a porous composite spiral muffler with remarkable noise reduction effect, which comprises a spiral-shaped air guide pipeline, a butt flange for communicating with an external air duct is installed at both ends of the air guide pipeline; an air silencer is sleeved on the outer side of the air guide pipeline, an air silencer gap is left between the air silencer and the air guide pipeline, a plurality of partition plates fixedly connected with the air guide pipeline are arranged on the air silencer at intervals, and air silencer holes are arranged on the air guide pipeline and the air silencer; a sound insulation shell is further sleeved on the outer side of the air silencer, a sound absorption gap is left between the inner wall of the sound insulation shell and the outer side of the air silencer, a sound absorption plate is installed on the inner wall of the sound insulation shell at the sound absorption gap, and a sound insulation layer is further installed on the outer wall of the sound insulation shell.

[0007] The technical problems to be solved by the utility model further can be further realized through following technical scheme, for the above-mentioned noise reduction effect is remarkable multi -hole composite formula spiral silencer, still add supplementary installation structure to sound insulation shell, supplementary installation structure includes mounting plate I and mounting plate II, mounting plate I is fixedly connected with sound insulation shell, mounting plate II is fixedly connected with mounting plate II through elastic shock pad.

[0008] The technical problems to be solved by the utility model further can be further realized through following technical scheme, for the above-mentioned noise reduction effect is remarkable multi -hole composite formula spiral silencer, the elastic shock pad is rubber plate or polyurethane plate.

[0009] The technical problems to be solved by the utility model further can be further realized through following technical scheme, for the above-mentioned noise reduction effect is remarkable multi -hole composite formula spiral silencer, the air guide pipe, the silencer and the sound insulation shell are all stainless steel materials.

[0010] The technical problems to be solved by the utility model further can be further realized through following technical scheme, for the above-mentioned noise reduction effect is remarkable multi -hole composite formula spiral silencer, the sound absorption board is wood fiber sound absorption board, glass fiber sound absorption board or metal sound absorption board.

[0011] The technical problems to be solved by the utility model further can be further realized through following technical scheme, for the above-mentioned noise reduction effect is remarkable multi -hole composite formula spiral silencer, the material of the sound insulation layer is sound absorption cotton, rock wool or sound insulation felt.

[0012] The technical problems to be solved by the utility model further can be further realized through following technical scheme, for the above-mentioned noise reduction effect is remarkable multi -hole composite formula spiral silencer, the silencer is in the form of a whole cylinder, and the sound insulation shell is in the form of a whole cuboid.

[0013] Compared with the prior art, the utility model has the advantages of:

[0014] 1, efficient noise reduction: the air guide pipe is arranged in the form of a spiral, which not only prolongs the airflow path, but also increases the contact area of the airflow and the sound absorption structure, thereby improving the sound absorption efficiency, and the sound absorption gap between the silencer and the air guide pipe, the sound absorption holes on the partition plate, the sound absorption board in the sound absorption gap and the sound insulation layer on the outer wall of the sound insulation shell jointly constitute a multi-level sound absorption system, which can effectively absorb and reflect sound waves and reduce the propagation of noise.

[0015] 2, stable structure: the butt flanges installed at both ends of the air guide pipe facilitate communication with external air pipes, ensuring the installation stability and connection reliability of the silencer, and the partition plate firmly connects the silencer and the air guide pipe together, enhancing the structural strength of the entire silencer.

[0016] 3. Wide application: The silencer is not only suitable for various occasions requiring noise reduction, such as industrial equipment, power auxiliary machines, etc., but also can be customized and optimized according to specific needs to meet the noise reduction requirements in different scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 A structural schematic view of the present application;

[0018] Fig. 2 A structural schematic view of the soundproof cylinder of the present application;

[0019] Fig. 3 A structural schematic view of the soundproof shell of the present application. DETAILED DESCRIPTION

[0020] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Referring to Figs. 1-3 A porous composite spiral silencer with remarkable noise reduction effect, which comprises a spiral-shaped air guide pipe 1. The air flow can generate more vortex and turbulence when passing through the air guide pipe 1, thereby more effectively consuming sound energy and reducing noise. Moreover, the path of the air flow is prolonged, further enhancing the silencing effect. For easy installation, a butt flange 2 for communicating with the external air pipe is installed at both ends of the air guide pipe 1. The butt flange 2 not only facilitates quick and stable connection with the external air pipe, but also ensures smooth flow of the air flow.

[0022] In order to enhance the silencing effect, a soundproof cylinder 3 is sleeved on the outside of the air guide pipe 1, and a soundproof gap 5 is left between the soundproof cylinder 3 and the air guide pipe 1, providing additional reflection and absorption space for sound waves. A plurality of partition plates 4 fixedly connected with the air guide pipe 1 are arranged at intervals on the soundproof cylinder 3 at the soundproof gap 5. These partition plates 4 not only play a supporting and fixing role, but also further divide the soundproof space, so that the sound waves can be reflected and attenuated multiple times during propagation, thereby improving the silencing efficiency. Soundproof holes 13 are provided on the air guide pipe 1 and the soundproof cylinder 3. These holes provide more diffusion and dissipation paths for sound waves, enhancing the silencing effect.

[0023] In order to further improve the noise reduction performance, the sound insulation shell 6 is further sleeved outside the muffler 3, the sound absorption gap 7 is left between the inner wall of the sound insulation shell 6 and the outer side of the muffler 3, and the sound absorption plate 8 is installed on the inner wall of the sound insulation shell 6 at the sound absorption gap 7. The sound absorption plate 8 is made of wood fiber, glass fiber or metal, which has good sound absorption performance and can effectively absorb and consume sound wave energy. The sound insulation layer 9 is also installed on the outer wall of the sound insulation shell 6, which is made of sound absorption cotton, rock wool or high-efficiency sound insulation material such as sound insulation felt, further enhancing the sound insulation effect of the muffler.

[0024] In order to facilitate installation and maintenance, the auxiliary installation structure is further provided on the sound insulation shell 6, which includes the mounting plate I 10 and the mounting plate II 12. The mounting plate I 10 is fixedly connected with the sound insulation shell 6, and the mounting plate II 12 is fixedly connected with the mounting plate II 12 through the elastic damping plate 11. The elastic damping plate 11 is a rubber plate or a polyurethane plate, which has good elasticity and damping performance and can effectively reduce the transmission of vibration and noise. The mounting hole is left on the mounting plate II 12, which is convenient for installing and fixing it with the external support by bolts.

[0025] In actual use, the air guide pipe 1, the muffler 3 and the sound insulation shell 6 are all made of stainless steel, which has excellent corrosion resistance and strength, and can ensure that the muffler can maintain stable performance in harsh environment.

[0026] The muffler 3 is in the form of a cylinder, and the sound insulation shell 6 is in the form of a rectangular parallelepiped. This design not only makes the muffler more beautiful and elegant in appearance, but also facilitates installation and arrangement in various occasions.

[0027] The actual application process of the muffler is as follows:

[0028] I. Installation process

[0029] Confirm whether the type and size of the muffler match the equipment or pipeline that needs to be reduced in noise;

[0030] Check whether all parts of the muffler are complete and intact, including the air guide pipe 1, the muffler 3, the sound insulation shell 6, the sound absorption plate 8, the sound insulation layer 9 and the auxiliary installation structure;

[0031] According to the noise source position and noise reduction demand of the equipment, determine the best installation position of the muffler to ensure that the installation position of the muffler is convenient for subsequent maintenance and inspection;

[0032] II. Use process

[0033] After ensuring that all connections and fixings are correct, start the equipment or pipeline that produces noise;

[0034] When the airflow enters the silencer through the external ventilation duct, it first encounters the spiral design of the air duct 1. This design causes the airflow to change direction continuously during propagation, generating eddies and turbulence, thereby consuming sound energy and reducing the intensity and frequency of noise.

[0035] At the same time, the sound waves generated by the airflow will enter the silencer gap 5 between the air duct 1 and the silencer 3. In this gap, the sound waves will encounter the partition plate 4 and the silencer hole 13. The partition plate 4 divides the silencer space into multiple small areas. The sound waves are reflected and attenuated multiple times in these small areas. Meanwhile, the design of the silencer hole 13 allows the sound waves to further diffuse and dissipate when passing through, thereby reducing the propagation ability of noise.

[0036] Next, the sound wave continues to propagate outward and enters the sound-absorbing gap 7 between the soundproof shell 6 and the silencer 3. In this gap, a sound-absorbing panel 8 is installed. The sound-absorbing panel 8 has good sound absorption performance. When the sound wave hits the sound-absorbing panel 8, the sound wave energy will be absorbed by the sound-absorbing panel 8 and converted into heat energy or other forms of energy, thereby further reducing the intensity and frequency of the noise.

[0037] Finally, the sound waves will propagate to the outer wall of the soundproof shell 6 and encounter the soundproof layer 9. The soundproof layer 9 can effectively block the propagation of the sound waves. When the sound waves hit the soundproof layer 9, the sound wave energy will be absorbed or reflected back into the silencer, thereby further reducing the propagation range and impact of the noise.

[0038] If the noise reduction effect is not ideal during use, you can check whether the installation position and connection method of the muffler are correct. You can also adjust the installation position of the muffler or optimize its internal structure according to the actual situation to improve the noise reduction effect.

[0039] In summary, the noise reduction process of this porous composite spiral silencer is a complex process involving the synergistic effect of multiple components and materials. Through the spiral design of the air duct 1, the reflection and absorption in the noise reduction gap 5, the sound absorption effect of the sound-absorbing plate 8, the sound insulation effect of the sound insulation layer 9, and the vibration damping effect of the elastic damping plate 11, this silencer can effectively reduce the intensity and frequency of noise, and reduce the propagation range and impact of noise. This makes it a promising candidate for various applications where noise pollution reduction is required.

Claims

1. A multi-perforated composite helical muffler with significant noise reduction effect, characterized in that: The muffler comprises a spiral-shaped air guide pipe, flanges for connecting with external air pipes are arranged at both ends of the air guide pipe, a muffling cylinder is sleeved outside the air guide pipe, a muffling gap is left between the muffling cylinder and the air guide pipe, a plurality of partition plates are arranged on the muffling cylinder at the muffling gap and fixedly connected with the air guide pipe, muffling holes are arranged on the air guide pipe and the muffling cylinder, a soundproof shell is sleeved outside the muffling cylinder, a sound absorbing gap is left between the inner wall of the soundproof shell and the outer side of the muffling cylinder, a sound absorbing plate is arranged on the inner wall of the soundproof shell at the sound absorbing gap, and a soundproof layer is arranged on the outer wall of the soundproof shell.

2. The multi-perforated compound helical silencer of claim 1, wherein: An auxiliary mounting structure is additionally arranged on the soundproof shell, the auxiliary mounting structure comprises mounting plate I and mounting plate II, the mounting plate I is fixedly connected with the soundproof shell, and the mounting plate II is fixedly connected with the mounting plate I through an elastic shock-absorbing plate.

3. The multi-perforated compound helical silencer of claim 2, wherein: The elastic shock-absorbing plate is a rubber plate or a polyurethane plate.

4. The multi-perforated hybrid helical silencer of claim 1, wherein: The air guide pipe, the muffling cylinder and the soundproof shell are made of stainless steel.

5. The significantly noise reducing perforated compound spiral silencer of claim 1, wherein: The sound absorbing plate is a wood fiber sound absorbing plate, a glass fiber sound absorbing plate or a metal sound absorbing plate.

6. The significantly noise reducing perforated compound spiral silencer of claim 1, wherein: The soundproof layer is made of sound absorbing cotton, rock wool or soundproof felt.

7. The significantly noise reducing perforated compound spiral silencer of claim 1, wherein: The muffling cylinder is in a cylindrical shape, and the soundproof shell is in a cuboid shape.

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