Industrial stainless steel chimney with noise reduction structure

Abstract

The utility model discloses an industrial stainless steel chimney with a noise reduction structure, and relates to the technical field of chimneys. The chimney comprises a chimney body and a smoke inlet pipe, and further comprises a guide plate which is fixedly installed at the joint of the chimney body and the smoke inlet pipe, the guide plate is of an arc-shaped structure inclining towards the extending direction of the chimney body, and a sound absorption layer and a sound insulation layer are fixedly installed on the inner wall and the outer wall of the chimney body respectively. The curvature radius R of the guide plate and the diameter D of the smoke inlet pipe meet the condition that R / D is larger than or equal to 1.5 and smaller than or equal to 2.5, the supporting assembly is configured to support the chimney body at the position communicated with the smoke inlet pipe, and a plurality of damping assemblies for buffering and damping the chimney body are arranged on the supporting assembly. The air flow path is optimized through the guide plate, noise and vibration are reduced from the source, the sound absorption layer and the sound insulation layer form a dual noise reduction structure, the full path of noise transmission is covered, the supporting assembly is in linkage with the damping assembly, the structural stability is guaranteed, and vibration transmission is weakened through elastic buffering.

Description

Technical Field

[0001] This utility model belongs to the field of chimneys, specifically, it relates to an industrial stainless steel chimney with a noise reduction structure. Background Technology

[0002] A chimney is a vertical tubular structure used to discharge flue gas, exhaust gas, and other gases. It is widely used in industrial production, civil construction, and other fields. In modern industrial production, industrial stainless steel chimneys are widely used in various fields, such as chemical, power, and steel industries, to discharge high-temperature flue gas and exhaust gas generated during the production process. However, noise problems have become increasingly prominent during the use of chimneys, bringing many adverse effects to the surrounding environment and people.

[0003] Chinese patent CN214426030U discloses a noise-reducing chimney. The device can effectively absorb the noise when smoke is discharged through the sound-absorbing layer, and has a good noise reduction effect. The heat insulation layer can block the heat from spreading to the outside of the exhaust pipe, and play a role in heat insulation and protection. However, the device has a right-angle bend structure between the smoke inlet pipe and the smoke outlet pipe. During the smoke discharge process, the bend structure is easily impacted by the airflow, which generates noise, thereby reducing the overall noise reduction effect.

[0004] In view of this, this utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an industrial stainless steel chimney with a noise reduction structure, thus solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] An industrial stainless steel chimney with a noise reduction structure includes a chimney body and a flue gas inlet pipe, and a guide plate fixedly installed at the interface between the chimney body and the flue gas inlet pipe. The guide plate is an arc-shaped structure inclined towards the extension direction of the chimney body. A sound-absorbing layer and a sound-insulating layer are fixedly installed on the inner and outer walls of the chimney body, respectively. The radius of curvature R of the guide plate and the diameter D of the flue gas inlet pipe satisfy 1.5≤R / D≤2.5.

[0008] A support assembly is configured to support the chimney body at the connection point with the flue, and the support assembly is provided with multiple sets of shock-absorbing components to buffer and dampen the chimney body.

[0009] By optimizing the airflow path through the guide plate, noise and vibration are reduced at the source. The sound-absorbing layer and the sound-insulating layer form a dual noise reduction structure that covers the entire path of noise propagation. The support components and the vibration damping components work together to ensure structural stability and reduce vibration transmission through elastic buffering.

[0010] Optionally, the support assembly includes two sets of clamps sleeved and fixedly installed on the outer wall of the chimney body, multiple sets of adjustable telescopic rods hinged to the clamps, and a mounting plate hinged to the bottom of the adjustable telescopic rods. The multiple sets of shock-absorbing components are spaced apart on the two sets of clamps.

[0011] The adjustable telescopic rods increase the flexibility and adaptability of the support components, enabling the chimney to better cope with different working conditions and external conditions. The shock-absorbing components are evenly distributed, which can comprehensively and effectively buffer the chimney vibration and improve the stability and safety of the chimney.

[0012] Optionally, the shock absorption assembly includes:

[0013] The mounting bracket is fixedly mounted on the clamp, and a movable rod is provided through and movably mounted on the mounting bracket and the clamp. A clamping plate that can fit against the outer wall of the chimney body is fixedly mounted at the first end of the movable rod.

[0014] An abutment plate is sleeved and fixedly mounted on the movable rod, and a spring is sleeved on the movable rod to abut against the abutment plate and the mounting bracket.

[0015] The elastic deformation of the spring can absorb vibration energy and reduce the transmission of vibration to the support components and foundation structure. The mounting bracket and movable rod are simple in structure, easy to install and maintain, and can reliably achieve the vibration reduction function.

[0016] Optionally, a limiting plate is fixedly installed at the second end of the movable rod.

[0017] The movement range of the movable rod is limited by the limiting plate to prevent it from coming out of the mounting bracket and clamps, thus ensuring the normal operation of the shock absorption components.

[0018] Optionally, a shock-absorbing pad is fixedly installed at the end of the clamping plate away from the movable rod, and the shock-absorbing pad is a synthetic rubber with a temperature resistance of ≥300℃.

[0019] The vibration is further buffered by the shock-absorbing pads between the clamping plate and the outer wall of the chimney, reducing rigid contact, noise and wear.

[0020] Optionally, the system also includes a cleaning assembly disposed on the chimney body. The cleaning assembly includes a cleaning pipe and a drive assembly. The cleaning pipe is located inside the chimney body and has multiple cleaning holes disposed opposite to the inner wall of the chimney body. The drive assembly is configured to drive the cleaning pipe to move in a circular trajectory along the circumference of the inner wall of the chimney body. The cleaning pipe is connected to an external pipe through a rotary joint.

[0021] Regularly cleaning the sound-absorbing layer with drive components and cleaning pipes can maintain its sound absorption performance, ensuring that the noise reduction effect of the chimney is not affected. It also helps maintain the normal smoke exhaust function of the chimney and prevents the accumulation of dirt from affecting the flow of flue gas.

[0022] Optionally, a reinforcing ring for mounting the drive assembly is sleeved and fixedly installed on the top of the chimney body, the drive assembly comprising:

[0023] An external gear is rotatably mounted on the reinforcing ring, and a fixing bracket is fixedly installed between the external gear and the cleaning pipe;

[0024] An electric motor is fixedly mounted on the chimney body, and a drive gear is fixedly mounted on the drive shaft of the electric motor, the drive gear meshing with the external gear.

[0025] The drive gear on the motor drive shaft meshes with the external gear that is rotatably mounted on the reinforcing ring, causing the external gear to rotate. The external gear, through the fixed frame, drives the cleaning pipe to make a circular motion.

[0026] Optionally, the bottom of the fixing frame is fixedly equipped with casters that are rolled on the reinforcing ring.

[0027] By having the casters roll on the reinforcing ring, friction between the fixing frame and the reinforcing ring is reduced, making the movement of the cleaning pipe smoother.

[0028] Optionally, a metal mesh layer for installing the sound insulation layer is fixedly installed inside the chimney body.

[0029] The metal mesh layer provides support for the sound insulation layer, allowing it to be better fixed to the inner wall of the chimney body. It also helps to disperse the sound propagation path and enhance the sound insulation effect.

[0030] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0031] 1. By setting up support components, shock absorption components, and guide plates, the airflow path is optimized through the guide plates, reducing the generation of noise and vibration from the source. The sound absorption layer and the sound insulation layer form a dual noise reduction structure, covering the entire path of noise transmission. The support components and shock absorption components work together to ensure structural stability and weaken vibration transmission through elastic buffering.

[0032] 2. By installing a cleaning component, the dirt on the sound-absorbing layer can be cleaned regularly, which can maintain the sound absorption performance of the sound-absorbing layer, ensure that the noise reduction effect of the chimney is not affected, and at the same time help maintain the normal smoke exhaust function of the chimney and prevent dirt accumulation from affecting the flow of flue gas.

[0033] 3. By incorporating casters that roll on the reinforcing ring, friction between the fixing frame and the reinforcing ring is reduced, making the movement of the cleaning pipe smoother. This reduces the load on the drive components, decreases energy consumption, and also reduces wear between parts, thereby improving the working efficiency and service life of the cleaning components.

[0034] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0035] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0036] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0037] Figure 2 This is a schematic diagram of the structure of the drive component of this utility model;

[0038] Figure 3 This is a schematic diagram of the structure of the guide plate of this utility model;

[0039] Figure 4 This is a schematic diagram of the structure of the support component of this utility model;

[0040] Figure 5 This is a schematic diagram of the structure of the shock absorption component of this utility model;

[0041] Figure 6 This utility model Figure 5 Top view;

[0042] Figure 7 This is a schematic diagram of the internal structure of the chimney body after it has been cut open.

[0043] Figure 8 This is a schematic diagram of the structure of the rotary joint of this utility model;

[0044] Figure 9 This is a schematic diagram of the universal wheel of this utility model.

[0045] The attached diagram lists the components represented by each number as follows:

[0046] 1. Chimney body; 2. Inlet pipe; 3. Reinforcing ring; 4. Sound insulation layer; 5. Sound absorption layer; 6. Metal mesh layer; 7. Support assembly; 71. Adjustable telescopic rod; 72. Clamp; 73. Mounting plate; 8. Cleaning assembly; 81. Cleaning pipe; 82. Drive assembly; 821. Motor; 822. Drive gear; 823. Fixing frame; 824. External gear; 9. Vibration damping assembly; 91. Clamping plate; 92. Movable rod; 93. Abutment plate; 94. Spring; 95. Mounting frame; 10. Guide plate; 11. Vibration damping pad; 12. Limiting plate; 13. Cleaning hole; 14. Rotary joint; 15. Casters.

[0047] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0048] The present invention will now be described in further detail with reference to the accompanying drawings.

[0049] Please see Figure 1-9 As shown, this embodiment provides an industrial stainless steel chimney with a noise reduction structure, including a chimney body 1 and a flue 2, and a guide plate 10, which is fixedly installed at the interface between the chimney body 1 and the flue 2. The guide plate 10 is an arc-shaped structure that is inclined towards the extension direction of the chimney body 1. The inner wall and outer wall of the chimney body 1 are respectively fixedly installed with a sound-absorbing layer 5 and a sound-insulating layer 4. The radius of curvature R of the guide plate 10 and the diameter D of the flue 2 satisfy 1.5≤R / D≤2.5. The support component 7 is configured to support the chimney body 1 at the connection with the flue 2. The support component 7 is provided with multiple sets of shock-absorbing components 9 for buffering and damping the chimney body 1.

[0050] Specifically, when the flue gas enters the chimney from the inlet pipe 2, it first comes into contact with the arc-shaped guide plate 10 fixed at the interface. The guide plate 10 is inclined in the direction of the extension of the chimney body 1, forming a smooth flow channel, which forces the flue gas to change its flow direction along the arc trajectory, avoiding airflow impact and turbulence caused by right-angle or acute-angle interfaces. When the flow of flue gas into the chimney body 1 generates noise, the inner wall sound-absorbing layer 5 (such as porous materials such as glass fiber and rock wool) absorbs sound waves through its pores and converts sound energy into heat energy. At the same time, the outer wall sound insulation layer 4 (such as high-density steel plate, sound insulation felt, etc.) reflects and blocks sound waves, reducing noise. When sound propagates to the external environment, and the flow of flue gas or the operation of equipment causes the chimney body 1 to vibrate, the support component 7 fixes the connection between the chimney and the flue gas inlet pipe 2, while the vibration damping component 9 absorbs vibration energy through elastic deformation, reducing the impact of vibration on the chimney structure and foundation, reducing the noise generated by the airflow impacting the bend, and optimizing the airflow path through the guide plate 10 to reduce the generation of noise and vibration from the source. The sound-absorbing layer 5 and the sound-insulating layer 4 form a double noise reduction structure, covering the entire path of noise propagation. The support component 7 and the vibration damping component 9 work together to ensure structural stability and weaken vibration transmission through elastic buffering.

[0051] It should be noted that, in this embodiment, a sealing gasket is fixedly installed at the connection between adjacent chimney bodies 1, and a rubber gasket is installed between the bottom of the chimney body 1 and the mounting base to block vibration from being transmitted to the ground and to prevent the chimney body 1 from becoming loose or damaged due to long-term vibration; furthermore, the radius of curvature R of the guide plate 10 is 500 mm (which must satisfy R ≥ 1.5 × inlet pipe diameter), and the tilt angle α is 22°. Meanwhile, the sound-absorbing layer 5 is made of high-alumina glass fiber felt (density 85 kg / m³). 2 It can withstand long-term temperatures ≥400℃.

[0052] In this embodiment, as Figures 1 to 4 As shown, the support assembly 7 includes two sets of clamps 72 sleeved and fixedly installed on the outer wall of the chimney body 1, multiple sets of adjustable telescopic rods 71 ​​hinged to the clamps 72, and a mounting plate 73 hinged to the bottom of the adjustable telescopic rods 71. Multiple sets of shock-absorbing components 9 are spaced apart on the two sets of clamps 72. Specifically, the two sets of clamps 72 are sleeved on the outer wall of the chimney body 1 to fix the support assembly 7 to the chimney. The adjustable telescopic rods 71 ​​can adjust their length and angle according to actual installation requirements to provide stable support for the chimney and adapt to different installation environments. The shock-absorbing components 9 are spaced apart on the clamps 72 to play a buffering role when the chimney vibrates.

[0053] In this embodiment, as Figures 1 to 6As shown, the shock absorption assembly 9 includes a mounting bracket 95, which is fixedly mounted on a clamp 72. A movable rod 92 is movably mounted through the mounting bracket 95 and the clamp 72. A clamping plate 91 that can fit against the outer wall of the chimney body 1 is fixedly mounted on the first end of the movable rod 92. An abutment plate 93 is sleeved and fixedly mounted on the movable rod 92. A spring 94 that abuts against the abutment plate 93 and the mounting bracket 95 is sleeved on the movable rod 92. Specifically, when the chimney vibrates, the movable rod 92 moves on the mounting bracket 95 and the clamp 72, and the clamping plate 91 moves with the movable rod 92. It is attached to the outer wall of the chimney body 1. Under the action of the spring 94, the contact plate 93 provides elastic force to the movable rod 92, so that the clamping plate 91 can adapt to the vibration of the chimney and play a buffering and shock-absorbing effect. The elastic deformation of the spring 94 can absorb the vibration energy and reduce the vibration transmitted to the support component 7 and the foundation structure. The mounting bracket 95 and the movable rod 92 are simple in structure, easy to install and maintain, and can reliably realize the shock absorption function. It should be noted that in this embodiment, the stiffness coefficient of the spring 94 k=15N / mm and the compression stroke ≥20mm.

[0054] In this embodiment, as Figures 4 to 6 As shown, a limiting plate 12 is fixedly installed at the second end of the movable rod 92. Specifically, the limiting plate 12 restricts the movement range of the movable rod 92, preventing the movable rod 92 from coming out of the mounting bracket 95 and the clamp 72, ensuring the normal operation of the shock absorption assembly 9, improving the reliability and stability of the shock absorption assembly 9, avoiding the failure of the shock absorption function due to the movable rod 92 coming out, and ensuring the shock absorption effect and safe operation of the chimney.

[0055] In this embodiment, as Figure 5 and Figure 6 As shown, a shock-absorbing pad 11 is fixedly installed at the end of the clamping plate 91 away from the movable rod 92. The shock-absorbing pad 11 is made of synthetic rubber with a temperature resistance of ≥300℃. Specifically, the shock-absorbing pad 11 can be a rubber pad. The shock-absorbing pad 11 further buffers the vibration between the clamping plate 91 and the outer wall of the chimney, reduces rigid contact, reduces noise and wear, protects the outer wall of the chimney from wear by the clamping plate 91, and enhances the shock absorption effect, further reducing vibration and noise, and improving the overall performance and service life of the chimney. It should be noted that the shock-absorbing pad 11 is made of fluorosilicone rubber (Shore hardness 70A) with a temperature resistance of 350℃.

[0056] In this embodiment, as Figure 1 , Figure 2 , Figure 7 and Figure 8As shown, it also includes a cleaning component 8, which is installed on the chimney body 1. The cleaning component 8 includes a cleaning pipe 81 and a drive component 82. The cleaning pipe 81 is located inside the chimney body 1 and has multiple cleaning holes 13 that are disposed opposite to the inner wall of the chimney body 1. The drive component 82 is configured to drive the cleaning pipe 81 to move in a circular trajectory along the circumference of the inner wall of the chimney body 1. The cleaning pipe 81 is connected to an external pipe through a rotary joint 14. Specifically, the drive component 82 drives the cleaning pipe 81 to move in a circular trajectory along the circumference of the inner wall of the chimney body 1, cleaning... The cleaning medium (such as compressed air, water, etc.) is sprayed out from the hole 13 to clean the sound-absorbing layer 5 on the inner wall of the chimney body 1, removing the attached dirt. By regularly cleaning the dirt on the sound-absorbing layer 5, the sound absorption performance of the sound-absorbing layer 5 can be maintained, ensuring that the noise reduction effect of the chimney is not affected. At the same time, it also helps to maintain the normal smoke exhaust function of the chimney and prevent dirt accumulation from affecting the flow of flue gas. It should be noted that in this embodiment, the cleaning pipe 81 is connected to the external conveying pipe, and the rotary joint 14 is installed at the connection between the cleaning pipe 81 and the external pipe to realize the medium conveying in the rotating state.

[0057] In this embodiment, as Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, a reinforcing ring 3 for mounting a drive assembly 82 is fitted and fixedly installed on the top of the chimney body 1. The drive assembly 82 includes an external gear 824, which is rotatably mounted on the reinforcing ring 3. A fixing bracket 823 is fixedly installed between the external gear 824 and the cleaning pipe 81. A motor 821 is fixedly installed on the chimney body 1. A drive gear 822 that meshes with the external gear 824 is fixedly installed on the drive shaft of the motor 821. Specifically, the drive gear 822 on the drive shaft of the motor 821 is controlled to rotate by an external control device. The drive gear 822 drives the external gear 824 to rotate. The external gear 824 drives the cleaning pipe 81 to make a circular motion through the fixing bracket 823. The motor 821 provides stable power, and the gear transmission is precise and reliable, which can ensure that the cleaning pipe 81 moves according to the predetermined circular trajectory, so as to achieve comprehensive and uniform cleaning of the sound-absorbing layer 5 on the inner wall of the chimney.

[0058] In this embodiment, as Figure 9 As shown, a caster wheel 15 is fixedly installed at the bottom of the fixed frame 823 and is rolled on the reinforcing ring 3. Specifically, the caster wheel 15 is installed at the bottom of the fixed frame 823. When the cleaning pipe 81 makes a circular motion, the caster wheel 15 rolls on the reinforcing ring 3, which reduces the friction between the fixed frame 823 and the reinforcing ring 3, making the movement of the cleaning pipe 81 smoother. This reduces the load on the drive assembly 82, reduces energy consumption, and also reduces wear between parts, improving the working efficiency and service life of the cleaning assembly 8.

[0059] In this embodiment, as Figure 3 As shown, a metal mesh layer 6 for installing the sound insulation layer 4 is fixedly installed inside the chimney body 1. Specifically, the metal mesh layer 6 provides support for the sound insulation layer 4, enabling the sound insulation layer 4 to be better fixed to the inner wall of the chimney body 1. It also helps to disperse the sound propagation path and enhance the sound insulation effect, thereby improving the installation stability and reliability of the sound insulation layer 4. This ensures that the sound insulation layer 4 will not fall off or shift during long-term use, thus guaranteeing the sound insulation performance of the chimney and effectively reducing noise pollution.

[0060] Working principle:

[0061] When flue gas enters the chimney from the inlet pipe 2, it first comes into contact with the arc-shaped guide plate 10 fixed at the interface. The guide plate 10 is inclined in the direction of the extension of the chimney body 1, forming a smooth flow channel, forcing the flue gas to change its flow direction along the arc trajectory, avoiding airflow impact and turbulence caused by right-angle or acute-angle interfaces. When the flow of flue gas into the chimney body 1 generates noise, the inner wall sound-absorbing layer 5 (such as porous materials such as glass fiber and rock wool) absorbs sound waves through its pores and converts sound energy into heat energy. At the same time, the outer wall sound insulation layer 4 (such as high-density steel plate, sound insulation felt, etc.) reflects and blocks sound waves, reducing the transmission of noise to the external environment. When the flow of flue gas or the operation of equipment causes the chimney body 1 to vibrate, when the chimney vibrates, the active The movable rod 92 moves on the mounting bracket 95 and the clamp 72. The clamping plate 91 moves with the movable rod 92 and fits against the outer wall of the chimney body 1. The contact plate 93 provides elastic force to the movable rod 92 under the action of the spring 94, so that the clamping plate 91 can adapt to the vibration of the chimney and play a buffering and shock-absorbing effect, thereby reducing the impact of vibration on the chimney structure and foundation, reducing the noise generated by the airflow impacting the bend, optimizing the airflow path through the guide plate 10, reducing the generation of noise and vibration from the source, and forming a double noise reduction structure with the sound-absorbing layer 5 and the sound-insulating layer 4, covering the entire path of noise propagation. The support component 7 is linked with the shock-absorbing component 9, which not only ensures the structural stability, but also weakens the vibration transmission through elastic buffering.

[0062] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. An industrial stainless steel chimney with a noise reduction structure, comprising a chimney body (1) and a smoke inlet pipe (2), characterized in that, Also includes: A guide plate (10) is fixedly installed at the interface between the chimney body (1) and the smoke inlet pipe (2). The guide plate (10) is an arc-shaped structure that is inclined towards the extension direction of the chimney body (1). The inner wall and outer wall of the chimney body (1) are respectively fixedly installed with a sound-absorbing layer (5) and a sound-insulating layer (4). The radius of curvature R of the guide plate (10) and the diameter D of the smoke inlet pipe (2) satisfy 1.5≤R / D≤2.

5. A support assembly (7) is configured to support the chimney body (1) at the point of communication with the flue (2), and the support assembly (7) is provided with multiple sets of shock-absorbing assemblies (9) for buffering and damping the chimney body (1).

2. The industrial stainless steel chimney with noise reduction structure according to claim 1, characterized in that, The support assembly (7) includes two sets of clamps (72) sleeved and fixedly installed on the outer wall of the chimney body (1), multiple sets of adjustable telescopic rods (71) hinged on the clamps (72), and a mounting plate (73) hinged to the bottom of the adjustable telescopic rods (71). Multiple sets of shock-absorbing assemblies (9) are spaced apart on the two sets of clamps (72).

3. An industrial stainless steel chimney with a noise reduction structure according to claim 2, characterized in that, The shock absorption assembly (9) includes: Mounting bracket (95) is fixedly mounted on clamp (72). A movable rod (92) is provided through and movable on the mounting bracket (95) and clamp (72). A clamping plate (91) that can fit against the outer wall of the chimney body (1) is fixedly mounted on the first end of the movable rod (92). A contact plate (93) is sleeved and fixedly mounted on the movable rod (92), and a spring (94) is sleeved on the movable rod (92) to abut against the contact plate (93) and the mounting bracket (95).

4. An industrial stainless steel chimney with a noise reduction structure according to claim 3, characterized in that, A limiting plate (12) is fixedly installed at the second end of the movable rod (92).

5. An industrial stainless steel chimney with a noise reduction structure according to claim 4, characterized in that, A shock-absorbing pad (11) is fixedly installed on one end of the clamping plate (91) away from the movable rod (92). The shock-absorbing pad (11) is made of synthetic rubber with a temperature resistance of ≥300℃.

6. An industrial stainless steel chimney with a noise reduction structure according to claim 1, characterized in that, It also includes a cleaning assembly (8) disposed on the chimney body (1). The cleaning assembly (8) includes a cleaning pipe (81) and a drive assembly (82). The cleaning pipe (81) is located inside the chimney body (1). The cleaning pipe (81) has a plurality of cleaning holes (13) disposed relative to the inner wall of the chimney body (1). The drive assembly (82) is configured to drive the cleaning pipe (81) to move in a circular trajectory along the circumference of the inner wall of the chimney body (1). The cleaning pipe (81) is connected to an external pipe through a rotary joint (14).

7. An industrial stainless steel chimney with a noise reduction structure according to claim 6, characterized in that, The top of the chimney body (1) is fitted with and fixedly installed with a reinforcing ring (3) for installing the drive assembly (82), the drive assembly (82) comprising: An external gear (824) is rotatably mounted on the reinforcing ring (3), and a fixing bracket (823) is fixedly installed between the external gear (824) and the cleaning pipe (81); An electric motor (821) is fixedly mounted on the chimney body (1). A drive gear (822) is fixedly mounted on the drive shaft of the electric motor (821). The drive gear (822) meshes with the external gear (824).

8. An industrial stainless steel chimney with a noise reduction structure according to claim 7, characterized in that, The bottom of the fixed frame (823) is fixedly equipped with casters (15) that are rolled on the reinforcing ring (3).

9. An industrial stainless steel chimney with a noise reduction structure according to claim 1, characterized in that, A metal mesh layer (6) for installing the sound insulation layer (4) is fixedly installed inside the chimney body (1).

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