A noise reduction assembly for a fan

Abstract

The utility model relates to the related field of noise reduction assembly, especially a fan noise reduction assembly, including sound insulation room, sound insulation door, observation window, exhaust pipe, ventilation assembly and sound insulation board etc. The utility model discloses high damping vibration stop layer, high -efficient sound absorption sound insulation layer, metal pipe cover damping rubber are set up to reduce the noise that air flows in the pipeline produces, and is provided with sound insulation board in sound insulation room to reduce the mechanical noise that fan generates when working, and through ventilation assembly to the fan ventilation cooling in sound insulation room, and the sound reduction board can carry out the noise reduction treatment to the flowing air in the ventilation pipe, reduces the noise pollution through, is favorable to reducing the influence of large -scale fan for electric heating furnace in the use process to the production environment.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction components, and in particular to a noise reduction component for wind turbines. Background Technology

[0002] Circulating fluidized bed boilers, as a type of high-efficiency, low-pollution combustion equipment, are widely used in industrial and power production. In order to meet the needs of fluidized bed material and coal, supplement the oxygen required for combustion, and provide the oxygen required for combustion, the fluidized bed boiler needs to be connected to the primary air fan and the secondary air fan.

[0003] During operation, fans typically use specialized ducts to deliver air to designated locations within the electric furnace. However, due to their inherent structure, fans inevitably generate mechanical noise during operation, especially large fans which produce even greater noise. Furthermore, the high-speed airflow within the ducts can easily rub against the duct walls, generating noise. Both the mechanical noise and the noise from the friction of the high-velocity air within the pipes are transmitted to the outside through the duct walls, causing noise pollution and impacting the production environment. Summary of the Invention

[0004] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides a noise reduction component for a fan to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a noise reduction component for a fan, comprising a soundproof chamber, a soundproof door, an observation window, an exhaust pipe, a ventilation component, a soundproof board, and a skirting board. An exhaust pipe and a ventilation component are fixedly passed through the soundproof chamber, and the soundproof door, the observation window, and the exhaust pipe are all installed on the soundproof chamber. The exhaust duct includes a pipe, a high-damping vibration damping layer, a high-efficiency sound absorption and insulation layer, and a metal pipe sleeve damping adhesive arranged sequentially from the inside to the outside. The pipe, the high-damping vibration damping layer, the high-efficiency sound absorption and insulation layer, and the metal pipe sleeve damping adhesive all pass through the soundproof room. The ventilation assembly includes several ventilation pipes fixedly embedded in the soundproof room. The ventilation pipes are divided into air inlet pipes and air outlet pipes. The air outlet pipes are set at a higher height than the air inlet pipes. Only the air outlet pipes are equipped with axial flow fans. Two or more sound-absorbing plates are installed in the ventilation pipes. Each end of the sound-absorbing plate along the extension direction of the ventilation pipe is equipped with a guide plate, and the sound-absorbing plate in the air outlet pipe is directly opposite the air outlet of the axial flow fan.

[0006] Preferably, a skirting board is provided at the bottom outer side of the soundproof room.

[0007] Preferably, the sound insulation panel includes a support steel frame that can be detachably installed in the soundproof room, a damping plate that can be detachably installed on the support steel frame from the inside out, an inner frame, a fourth sound insulation layer and a stainless steel plate. A perforated plate is installed on each of the inner and outer sides of the inner frame, and a third sound insulation layer is filled between the two perforated plates. The third sound insulation layer is covered and sealed by the sealing plates installed at the four ends of the inner side of the inner frame.

[0008] Preferably, the soundproof door includes a door panel that is movably installed on the soundproof chamber, the soundproof chamber is provided with an entrance and exit corresponding to the door panel, the door panel is a hollow structure and is filled with a first sound insulation layer.

[0009] Preferably, a sealing strip is attached and fixed around the perimeter of the door panel.

[0010] Preferably, the observation window includes an outer frame fixedly embedded in the soundproof room and an observation glass installed inside the outer frame. The outer frame is hollow and filled with a second soundproof layer.

[0011] Preferably, the observation glass is a double-glazed insulated glass or laminated glass.

[0012] The beneficial effects of this utility model are: This invention reduces noise generated by airflow in ducts by incorporating a high-damping vibration damping layer, a high-efficiency sound-absorbing and insulating layer, and a metal tube sleeve damping adhesive. Furthermore, sound-insulating panels are installed in the soundproof chamber to reduce the mechanical noise generated by the fan itself during operation. A ventilation assembly is used to ventilate and cool the fan within the soundproof chamber, while a sound-absorbing panel reduces noise from the airflow within the ventilation duct. By reducing noise pollution, this invention helps to minimize the impact of large fans used in electric furnaces on the production environment during operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall front view of the soundproof room of this utility model; Figure 2 This is a schematic diagram of the soundproof door structure of this utility model; Figure 3 This is a schematic diagram of the observation window structure of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the exhaust pipe connection of this utility model; Figure 5 This is a front view cross-sectional structural diagram of the ventilation component of this utility model; Figure 6 This is a schematic diagram of the cross-sectional structure of the sound insulation panel of this utility model.

[0014] The components include: 1. Soundproof room; 2. Soundproof door; 3. Observation window; 4. Exhaust duct; 5. Ventilation assembly; 6. Soundproof board; 7. Skirting board; 21. Door panel; 22. First soundproof layer; 23. Sealing strip; 31. Outer frame; 32. Observation glass; 33. Second soundproof layer; 41. Pipe; 42. High damping vibration damping layer; 43. High-efficiency sound absorption and insulation layer; 44. Metal pipe sleeve damping adhesive; 51. Ventilation duct; 52. Axial flow fan; 53. Soundproof plate; 54. Guide plate; 61. Supporting steel frame; 62. Damping plate; 63. Inner frame; 64. Perforated plate; 65. Third soundproof layer; 66. Fourth soundproof layer; 67. Stainless steel plate. Detailed Implementation

[0015] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0016] like Figures 1 to 5 As shown, this utility model provides a noise reduction component for a fan, including a soundproof room 1, a soundproof door 2, an observation window 3, an exhaust pipe 4, a ventilation component 5, a soundproof board 6, and a skirting board 7. The exhaust pipe 4 and the ventilation component 5 are fixedly passed through the soundproof room 1. The soundproof door 2, the observation window 3, and the exhaust pipe 4 are all installed on the soundproof room 1. The exhaust duct 4 includes a ring-shaped pipe 41, a high-damping vibration damping layer 42, a high-efficiency sound-absorbing and insulating layer 43, and a metal pipe sleeve damping adhesive 44, which are fixedly connected from the inside to the outside. The pipe 41, the high-damping vibration damping layer 42, the high-efficiency sound-absorbing and insulating layer 43, and the metal pipe sleeve damping adhesive 44 are all fixedly connected through the soundproof room 1. The ventilation assembly 5 includes several L-shaped ventilation pipes 51 fixedly embedded in the soundproof room 1. The ventilation pipes 51 are made of stainless steel and are divided into air inlet pipes and air outlet pipes. The air inlet pipes are located in the lower middle part of the soundproof room 1, while the air outlet pipes are located at the top of the soundproof room 1. Only the air outlet pipes are equipped with axial flow fans 52. Two or more equally spaced and parallel sound-absorbing plates 53 are installed in the ventilation pipes 51. Each end of the sound-absorbing plate 53 along the extension direction of the ventilation pipe 51 is equipped with an arc-shaped guide plate 54 to guide the air flow in the ventilation pipes 51. The sound-absorbing plate 53 in the air outlet pipe is directly opposite the air outlet of the axial flow fan 52. In this embodiment, a skirting board 7 is provided at the bottom outer side of the soundproof room 1. The skirting board 7 is a 20cm high skirting board made of bricks, which is used to protect the bottom outer side of the soundproof room 1 and reduce rainwater infiltration. In this embodiment, the high-damping vibration damping layer 42 is made of butyl rubber or nitrile rubber. Other high-elasticity materials can also be used, but will not be elaborated here. The high-efficiency sound-absorbing and insulating layer 43 is made of glass wool. The metal tube sleeve damping adhesive 44 is made of carbon steel with rubber, and the rubber is connected to the outer surface of the high-efficiency sound absorption and insulation layer 43. In this embodiment, the soundproof door 2 includes a door panel 21 hinged to the soundproof room 1. The soundproof room 1 is provided with an inlet and outlet corresponding to the door panel 21. The position of the inlet and outlet corresponds to the maintenance position of the soundproof room 2. The door panel 21 is a hollow stainless steel plate and is filled with a first sound insulation layer 22. Rubber sealing strips 23 are pasted and fixed around the door panel 21 to improve the sealing performance between the door panel 21 and the soundproof door 2 and reduce the noise inside the soundproof door 2 from flowing out through the gap outside the door panel 21. In this embodiment, the observation window 3 includes an outer frame 31 fixedly embedded in the soundproof room 1 and an observation glass 32 installed in the outer frame 31. The outer frame 31 is made of aluminum alloy and is hollow inside with a second sound insulation layer 33 to improve the sound insulation effect at the position of the outer frame 31. The position of the observation glass 32 is directly facing the fan in the soundproof room 1 so as to observe the working status of the fan in time. The observation glass 32 is made of double-layer hollow glass or laminated glass to improve the sound insulation effect of the observation glass 32. like Figure 6 As shown, in this embodiment, the sound insulation panel 6 includes a support steel frame 61 that is locked and fixed in the sound insulation room 1, a damping plate 62 that is detachably installed on the support steel frame 61 from the inside to the outside, an inner frame 63, a fourth sound insulation layer 66, and a stainless steel plate 67. The inner frame 63 is made of stainless steel. A perforated plate 64 is installed on each of the inner and outer sides of the inner frame 63. The perforated plate 64 is made of aluminum alloy plate. A third sound insulation layer 65 is filled between the two perforated plates 64, and the third sound insulation layer 65 is covered and sealed by the sealing plates 68 installed at the four ends of the inner side of the inner frame 63. In this embodiment, the outer surface of the stainless steel plate 67 is coated with any one of epoxy resin coating, polyurethane coating, fluorocarbon coating, and inorganic coating to improve the corrosion resistance of the inner frame 63 and the stainless steel plate 67. In this embodiment, the first sound insulation layer 22, the second sound insulation layer 33, and the third sound insulation layer 65 are all made of rock wool. In this embodiment, a temperature sensor for detecting temperature changes is installed in the soundproof room 1 (not shown in the figure). The temperature sensor and axial flow fan 52 are connected to a dedicated power distribution box. The operation of the electrical components is controlled by a microcomputer program, and the temperature in the soundproof room is automatically adjusted in conjunction with the axial flow fan 52. Specifically, by installing the fan used by the large electric furnace in the soundproof room 1, and connecting the air outlet of the large fan to the exhaust pipe 4, and the end of the exhaust pipe 4 to the location of the electric furnace that needs to be cooled, when the large fan is working, the airflow flows in the pipe 41. When the pipe 41 vibrates due to the operation of the fan, the high-damping vibration damping layer 42 and the metal pipe sleeve damping rubber 44 will undergo stretching, compression, shearing and other deformations with the vibration of the pipe. During the deformation process, the mechanical energy of the vibration is converted into heat energy and consumed through the intermolecular friction and internal friction of the material, thereby effectively suppressing the generation and propagation of vibration, reducing the noise caused by pipe vibration from the root, and further absorbing noise through the high-efficiency sound-absorbing and insulating layer 43, reducing the noise generated by the airflow in the exhaust pipe 4. Furthermore, the noise generated by the fan in the soundproof room 1 is absorbed by the third sound insulation layer 65 and the fourth sound insulation layer 66, thereby reducing the noise pollution generated when the fan is working. When ventilation and heat dissipation of the fan in the soundproof room 1 are required, the axial flow fan 52 is started to drive the air flow in the soundproof room 1. The air in the air inlet duct of the soundproof room 1 is affected by the axial flow fan 52 and flows naturally. The air flow carries away the heat in the soundproof room 1, so that the soundproof room 1 has a good ventilation effect. The sound-absorbing plate 53 reduces the noise of the flowing air and reduces the noise pollution generated by the axial flow fan 52 when it is working.

[0017] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A noise reduction component for a fan, comprising a soundproof room, a soundproof door installed in the soundproof room, an observation window, and an exhaust duct; Its features are, An exhaust duct and ventilation components are fixedly installed through the soundproof room; The exhaust duct includes a pipe, a high-damping vibration damping layer, a high-efficiency sound absorption and insulation layer, and a metal pipe sleeve damping adhesive arranged sequentially from the inside to the outside. The pipe, the high-damping vibration damping layer, the high-efficiency sound absorption and insulation layer, and the metal pipe sleeve damping adhesive all pass through the soundproof room. The ventilation assembly includes several ventilation pipes fixedly embedded in the soundproof room. The ventilation pipes are divided into air inlet pipes and air outlet pipes. Only the air outlet pipe is equipped with an axial flow fan. Two or more sound-absorbing plates are installed in the ventilation pipe. Each end of the sound-absorbing plate along the extension direction of the ventilation pipe is equipped with a guide plate, and the sound-absorbing plate in the air outlet pipe is directly opposite the air outlet of the axial flow fan.

2. The noise reduction component for a fan according to claim 1, characterized in that: The bottom outer side of the soundproof room is equipped with a skirting board.

3. The noise reduction component for a fan according to claim 1, characterized in that: It also includes a sound insulation panel, which includes a support steel frame that can be detachably installed in the soundproof room, a damping plate that can be detachably installed on the support steel frame from the inside to the outside, an inner frame, a fourth sound insulation layer and a stainless steel plate. A perforated plate is installed on each of the inner and outer sides of the inner frame, and a third sound insulation layer is filled between the two perforated plates. The third sound insulation layer is covered and sealed by the sealing plates installed at the four ends of the inner side of the inner frame.

4. The noise reduction component for a fan according to claim 1, characterized in that: The soundproof door includes a door panel that is movably installed on the soundproof chamber. The soundproof chamber is provided with an entrance and exit corresponding to the door panel. The door panel has a hollow structure and is filled with a first sound insulation layer.

5. The noise reduction component for a fan according to claim 4, characterized in that: Sealing strips are affixed and fixed around the perimeter of the door panel.

6. The noise reduction component for a fan according to claim 1, characterized in that: The observation window includes an outer frame fixedly embedded in the soundproof room and an observation glass installed inside the outer frame. The outer frame is hollow and filled with a second soundproof layer.

7. The noise reduction component for a fan according to claim 6, characterized in that: The observation glass is made of double-glazed or laminated glass.

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