Durable induced draft fan silencer

Abstract

The utility model discloses a durable silencer for an induced draft fan. The durable silencer comprises a shell, an inner plate, a silencing medium, a reinforcing plate and a protective plate, the shell is provided with a vertically-through exhaust channel, a groove is formed in the exhaust channel, the inner plate is arranged on the exhaust channel, a silencing cavity is formed between the groove and the inner plate, and the reinforcing plate is arranged on the end face of the silencing cavity. The silencing medium is arranged in the silencing cavity and located on the inner wall face of the reinforcing plate, and an opening is formed in the inner plate; the protection plate is arranged on the outer side of the shell; thus, through the design of all the parts, the silencing medium is arranged on the reinforcing plate, the protection plate is arranged on the outer side of the shell in a matched mode, the overall structural strength of the product is improved, the influence on the interior of the product when the product is collided by the outside is reduced, the normal use and the exhaust silencing effect of the product are guaranteed, the structural design is ingenious and reasonable, use is stable, and the practicability is high. The durability and the service life of the product are improved, and the application range is wide.

Description

Technical Field

[0001] This utility model relates to the field of exhaust silencing technology, and in particular to a durable induced draft fan silencing device. Background Technology

[0002] With the development of technology, to meet environmental protection standards in the current industrial powder material processing, high-speed and high-pressure induced draft fans are required during operation. Traditional induced draft fans are devices that use impeller rotation to generate negative pressure and then draw air from the system (equipment). These fans are generally installed at the tail end of the boiler to extract hot flue gas from the furnace. However, high-speed and high-pressure induced draft fans generate strong noise during operation, which seriously affects the quietness of the environment, hinders the normal production and life of workers, and is detrimental to the health of users.

[0003] Later, a type of induced draft fan silencer appeared on the market. This silencer is installed at the air outlet of the induced draft fan and absorbs the noise generated during the operation of the fan to reduce the impact of noise on the user's working environment, thereby achieving the purpose of silencing the exhaust of the induced draft fan. However, the existing induced draft fan silencers have poor structural strength, making the shell of the silencer prone to deformation or damage when subjected to external impacts. This can lead to damage to the silencing medium inside the silencer or exposure of the silencing medium from the damaged area on the outside of the shell, which may cause the silencer to malfunction. This reduces the silencing effect and service life of the silencer, resulting in poor usability and a limited range of applications.

[0004] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide a durable induced draft fan silencing device. It utilizes a silencing medium on a reinforcing plate and a protective plate on the outside of the shell, which improves the overall structural strength of the product, reduces the impact of external collisions on the internal structure, ensures the normal use of the product and the effect of exhaust silencing, improves the durability and service life of the product, and has a wide range of applications.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A durable induced draft fan silencing device includes a housing, an inner plate, a silencing medium, a reinforcing plate, and a protective plate. The housing has a vertically penetrating exhaust channel with a groove extending annularly along its inner wall. The inner plate is positioned on the exhaust channel and located at the inner end of the groove, forming a silencing cavity between the groove and the inner plate. Several reinforcing plates are sequentially arranged on the end faces of the silencing cavity. The silencing medium is disposed within the silencing cavity and located on the inner wall of the reinforcing plate. An opening is formed on the inner plate. The protective plate is located on the outer side of the housing.

[0008] As a preferred embodiment, a gap is maintained between the inner panel and the sound-absorbing medium, and a flame-retardant layer is provided on the outer wall surface of the inner panel, the flame-retardant layer having a porous structure.

[0009] As a preferred embodiment, the flame-retardant layer is honeycomb-shaped flame-retardant cotton.

[0010] As a preferred embodiment, a buffer is provided between the protective plate and the housing.

[0011] As a preferred embodiment, the buffer is provided with a first reinforcing rib inside.

[0012] As a preferred embodiment, the sound-absorbing medium is porous glass fiber sound-absorbing cotton or polyester fiber sound-absorbing cotton.

[0013] As a preferred embodiment, the device also includes a mounting head for installing the product at the exhaust port of the induced draft fan. The mounting head is located at the upper or lower end of the housing and is provided with a sealing gasket that makes sealing contact with the induced draft fan.

[0014] As a preferred embodiment, the sealing gasket is provided with a second reinforcing rib.

[0015] As a preferred embodiment, the outer wall of the protective plate is sequentially provided with a graphene heat dissipation coating and a polyurethane wear-resistant paint.

[0016] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly improves the overall structural strength of the product by designing each component, using a sound-absorbing medium on the reinforcing plate, and cooperating with a protective plate on the outside of the shell. This reduces the impact on the interior when the product is hit by external collisions, ensuring the normal use of the product and the effect of exhaust and sound absorption. The structural design is ingenious and reasonable, the use is stable, and the durability and service life of the product are improved. It has a wide range of applications.

[0017] Secondly, the flame-retardant layer provides excellent flame protection for the silencing medium in the silencing cavity, preventing the blower from drawing hot air into the silencing cavity and affecting the silencing medium, thus ensuring the safety of the product. At the same time, the buffer component further reduces the impact on the internal structure when the product is subjected to external collisions. Furthermore, the first reinforcing rib improves the structural strength between the buffer component, the protective plate, and the shell, thereby enhancing the protective effect of the protective plate and buffer component on the shell and improving its usability.

[0018] Furthermore, the sealing gasket ensures the airtight connection between the mounting head and the exhaust fan, preventing some airflow from escaping through the gap between the mounting head and the exhaust fan during exhaust, thereby improving the product's exhaust noise reduction effect. At the same time, the second reinforcing rib helps to improve the connection strength between the mounting head, sealing gasket, and exhaust fan, thus ensuring the sealing effect of the sealing gasket. In addition, the graphene heat dissipation coating and polyurethane wear-resistant paint improve the product's heat dissipation effect and wear resistance.

[0019] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of an embodiment of the present utility model;

[0021] Figure 2 This is a partially enlarged schematic diagram of an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached diagram:

[0023] 11. Housing 111. Exhaust duct

[0024] 112. Groove; 113. Sound-absorbing cavity

[0025] 12. Inner panel 121. Opening

[0026] 13. Sound-absorbing medium; 14. Reinforcing plate

[0027] 15. Protective plate 151. Graphene heat dissipation coating

[0028] 152. Polyurethane wear-resistant paint; 16. Flame retardant layer

[0029] 17. Buffer component 171. First reinforcing rib

[0030] 18. Mounting head 19. Sealing gasket. Detailed Implementation

[0031] Please refer to Figures 1 to 2 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0032] A durable induced draft fan silencing device includes a housing 11, an inner plate 12, a silencing medium 13, a reinforcing plate 14, and a protective plate 15; wherein:

[0033] The housing 11 has a vertically penetrating exhaust channel 111. A groove 112 extending circumferentially along the inner wall of the exhaust channel 111 is provided within the exhaust channel 111. An inner plate 12 is disposed on the exhaust channel 111 and located at the inner end of the groove 112. A sound-absorbing cavity 113 is formed between the groove 112 and the inner plate 12. Several reinforcing plates 14 are provided and sequentially disposed on the end face of the sound-absorbing cavity 113. The sound-absorbing medium 13 is porous glass fiber sound-absorbing cotton or polyester fiber sound-absorbing cotton. The sound-absorbing medium 13 is disposed within the sound-absorbing cavity. The sound cavity 113 is located inside the inner wall of the reinforcing plate 14, and the inner plate 12 has an opening 121; the protective plate 15 is located on the outer side of the shell 11. In this way, through the design of each component, the sound-absorbing medium is placed on the reinforcing plate, and the protective plate is placed on the outer side of the shell, which improves the overall structural strength of the product, reduces the impact of external collisions on the interior, ensures the normal use of the product and the effect of exhaust and noise reduction, the structural design is ingenious and reasonable, the use is stable, the durability and service life of the product are improved, and the application range is wide.

[0034] Furthermore, a gap is maintained between the inner plate 12 and the sound-absorbing medium 13. A flame-retardant layer 16 is provided on the outer wall surface of the inner plate 12. The flame-retardant layer 16 has a porous structure and is made of honeycomb flame-retardant cotton. In this way, the flame-retardant layer provides good flame-retardant protection for the sound-absorbing medium in the sound-absorbing cavity, preventing the blower from bringing hot air into the sound-absorbing cavity and affecting the sound-absorbing medium, thus preventing ignition and ensuring the safety of the product.

[0035] Furthermore, a buffer 17 is provided between the protective plate 15 and the shell 11. Preferably, the buffer 17 has a plurality of first reinforcing ribs 171 arranged at intervals along the outer periphery of the shell. The buffer 17 is made of silicone. In this way, the buffer further reduces the impact on the interior of the product when it is hit by external collisions. Moreover, the first reinforcing ribs improve the structural strength between the buffer, the protective plate and the shell, thereby improving the protective effect of the protective plate and the buffer on the shell and improving its usability.

[0036] It also includes an installation head 18, which is used to install the product at the exhaust port of the induced draft fan. The installation head 18 is located at the upper or lower end of the housing 11, and a sealing gasket 19 is provided on the installation head 18 to seal against the induced draft fan. Specifically, the sealing gasket 19 has several spaced second reinforcing ribs (not shown in the figure) inside. The sealing gasket 19 is made of soft rubber. In this way, the setting of the sealing gasket ensures the sealing of the connection between the installation head and the induced draft fan, and prevents some airflow from being discharged from the gap between the installation head and the induced draft fan during exhaust, thereby improving the exhaust noise reduction effect of the product. At the same time, the setting of the second reinforcing ribs helps to improve the connection strength between the installation head, the sealing gasket and the induced draft fan, thereby ensuring the sealing effect of the sealing gasket.

[0037] Preferably, the surface of the protective plate 15 is sequentially provided with a graphene heat dissipation coating 151 and a polyurethane wear-resistant paint 152 to improve the heat dissipation effect and wear resistance of the product.

[0038] The key design feature of this utility model is that, through the design of each component, a sound-absorbing medium is placed on the reinforcing plate, and a protective plate is placed on the outside of the shell. This improves the overall structural strength of the product, reduces the impact on the interior when the product is subjected to external collisions, ensures the normal use of the product and the effect of ventilation and sound absorption. The structure is ingenious and reasonable, stable in use, improves the durability and service life of the product, and has a wide range of applications.

[0039] Secondly, the flame-retardant layer provides excellent flame protection for the silencing medium in the silencing cavity, preventing the blower from drawing hot air into the silencing cavity and affecting the silencing medium, thus ensuring the safety of the product. At the same time, the buffer component further reduces the impact on the internal structure when the product is subjected to external collisions. Furthermore, the first reinforcing rib improves the structural strength between the buffer component, the protective plate, and the shell, thereby enhancing the protective effect of the protective plate and buffer component on the shell and improving its usability.

[0040] Furthermore, the sealing gasket ensures the airtight connection between the mounting head and the exhaust fan, preventing some airflow from escaping through the gap between the mounting head and the exhaust fan during exhaust, thereby improving the product's exhaust noise reduction effect. At the same time, the second reinforcing rib helps to improve the connection strength between the mounting head, sealing gasket, and exhaust fan, thus ensuring the sealing effect of the sealing gasket. In addition, the graphene heat dissipation coating and polyurethane wear-resistant paint improve the product's heat dissipation effect and wear resistance.

[0041] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A durable induced draft fan silencer, characterized in that: The device includes a shell, an inner plate, a sound-absorbing medium, a reinforcing plate, and a protective plate. The shell has a vertically penetrating exhaust channel with a groove extending annularly along its inner wall. The inner plate is positioned on the exhaust channel and located at the inner end of the groove, forming a sound-absorbing cavity between the groove and the inner plate. Several reinforcing plates are sequentially arranged on the end faces of the sound-absorbing cavity. The sound-absorbing medium is disposed within the sound-absorbing cavity and located on the inner wall of the reinforcing plate. An opening is formed on the inner plate. The protective plate is located on the outer side of the shell.

2. The durable induced draft fan silencing device according to claim 1, characterized in that: There is a gap between the inner panel and the sound-absorbing medium, and a flame-retardant layer is provided on the outer wall of the inner panel. The flame-retardant layer has a porous structure.

3. The durable induced draft fan silencing device according to claim 2, characterized in that: The flame-retardant layer is honeycomb-shaped flame-retardant cotton.

4. The durable induced draft fan silencing device according to claim 1, characterized in that: A buffer is provided between the protective plate and the housing.

5. The durable induced draft fan silencing device according to claim 4, characterized in that: The buffer component has a first reinforcing rib inside.

6. The durable induced draft fan silencing device according to claim 1, characterized in that: The sound-absorbing medium is porous glass fiber sound-absorbing cotton or polyester fiber sound-absorbing cotton.

7. The durable induced draft fan silencing device according to claim 1, characterized in that: It also includes an installation head, which is used to install the product at the exhaust port of the induced draft fan. The installation head is located at the upper or lower end of the housing and is provided with a sealing gasket that is in sealing contact with the induced draft fan.

8. The durable induced draft fan silencing device according to claim 7, characterized in that: The sealing gasket is provided with a second reinforcing rib.

9. A durable induced draft fan silencing device according to claim 1, characterized in that: The outer wall of the protective plate is sequentially coated with a graphene heat dissipation coating and a polyurethane wear-resistant paint.

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