Induced draft fan silencer easy to assemble and use

Abstract

The utility model discloses an induced draft fan silencer easy to assemble and use. The induced draft fan silencer comprises a shell body, an installation head and a silencing medium. The shell body comprises an upper plate part, a lower plate part, an inner plate and an outer plate which are detachably connected, a silencing cavity is defined by the upper plate part, the lower plate part, the inner plate and the outer plate, the silencing medium is arranged in the silencing cavity, an exhaust channel is defined by the upper plate part, the lower plate part and the inner plate, and an opening is formed in the inner plate; the mounting head is arranged at any opening; thus, through the design of all the components, the shell body, the silencing medium, the installation head and other components are stored and transported respectively, the upper plate part, the lower plate part, the inner plate and the outer plate of the shell body are matched to be detachably connected, stacking storage of all the components is facilitated, the occupied space and the transportation cost of all the components are reduced, the structural design is ingenious and reasonable, and practicability is high. And subsequent maintenance of the product is facilitated, the use requirements of users are met, the usability is good, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the field of exhaust silencing technology, in particular to an induced draft fan silencing device which is easy to assemble and use. Background Art

[0002] With the development of science and technology, in order to meet environmental protection standards for powder material processing in industry at this stage, high-speed and high-pressure induced draft fans are needed during work. Traditional induced draft fans generate negative pressure through the rotation of impellers, and then extract air from the system (equipment). The induced draft fan is generally installed at the tail end of the boiler to extract hot flue gas in the furnace. Since high-speed and high-pressure induced draft fans generate strong noise during operation, they seriously affect the quietness of the environment, hinder the normal production and life of the staff, and are not conducive to the health of the users.

[0003] The existing induced draft fan is additionally provided with a silencer, which is arranged at the air outlet of the induced draft fan. The silencer is used to absorb the noise sound waves generated during the operation of the induced draft fan to reduce the impact of the noise on the user's working environment. However, the existing silencer is usually assembled into a whole product by welding various components, and then transported to a designated location for installation and placement. Its structural design is poor, the entire product takes up a large space during transportation, is not conducive to stacking, has high transportation costs, is not convenient for subsequent repair and maintenance, cannot meet the user's usage needs, and has a small scope of application.

[0004] Therefore, it is necessary to study a new technical solution to solve the above problems. Utility Model Content

[0005] In view of this, the utility model aims to solve the deficiencies in the prior art, and its main purpose is to provide an induced draft fan silencer device that is easy to assemble and use. Through the design of various components, the shell body, silencer medium, mounting head and other components are stored and transported separately, and the upper plate, lower plate, inner plate and outer plate of the shell body are detachably connected to facilitate stacking and storage of the components, thereby reducing the space occupied by the components and the transportation cost, and having a wide range of applications.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A silencing device for an induced draft fan that is easy to assemble and use, comprising a shell body, a mounting head and a silencing medium arranged on the shell body; wherein: the shell body comprises an upper plate portion, a lower plate portion, an inner plate and an outer plate that are detachably connected, the inner plate and the outer plate are arranged between the upper plate portion and the lower plate portion and are arranged in a spacing manner from the inside to the outside, a silencing cavity is formed between the upper plate portion, the lower plate portion, the inner plate and the outer plate, the silencing medium is arranged in the silencing cavity, an exhaust passage that is open up and down is formed between the upper plate portion, the lower plate portion and the inner plate, and a plurality of openings for connecting the silencing cavity with the exhaust passage are opened on the inner plate; the mounting head is used to mount the shell body at the exhaust outlet, and the mounting head is arranged at any opening.

[0008] As a preferred solution, a first flame retardant layer is provided on the inner side of the inner plate, the first flame retardant layer is kept at a distance from the sound-absorbing medium, and the first flame retardant layer is a porous structure.

[0009] As a preferred solution, the inner wall of the outer panel is provided with a second flame retardant layer, and the sound-absorbing medium is provided on the inner side of the second flame retardant layer.

[0010] As a preferred solution, the sound-absorbing medium is sound-absorbing cotton.

[0011] As a preferred solution, the sound-absorbing cotton is glass fiber sound-absorbing cotton or polyester fiber sound-absorbing cotton with a porous structure.

[0012] As a preferred solution, the mounting head has a first mounting plate for connecting to the exhaust port, the center of the first mounting plate has a second mounting plate extending toward the exhaust channel, the second mounting plate extends from the opening into the exhaust channel and is connected to the inner wall of the exhaust channel.

[0013] As a preferred solution, a heat dissipation device is provided on the outer side of the outer plate.

[0014] As a preferred solution, the heat dissipation device includes a third mounting plate and heat dissipation fins arranged on the third mounting plate, the third mounting plate is arranged on the outside of the outer plate, and the heat dissipation device is provided with a plurality of heat dissipation fins arranged in a spaced manner along the periphery of the outer plate.

[0015] As a preferred solution, the inner side of the lower end of the upper plate part and the inner side of the upper end of the lower plate part are both provided with a first stopper for positioning and connecting with the inner plate, and the outer end of the inner plate is arranged at the inner end of the first stopper.

[0016] As a preferred solution, the outer ends of the upper plate portion and the lower plate portion are both provided with a second stopper for positioning and connecting with the outer plate, and the inner end of the outer plate is arranged on the outer side of the second stopper.

[0017] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that the shell body, the silencing medium and the mounting head are stored and transported separately mainly through the design of each component, and the upper plate part, the lower plate part, the inner plate and the outer plate of the shell body are detachably connected to facilitate the stacking and storage of each component, thereby reducing the occupied space and transportation cost of each component. The structural design is ingenious and reasonable, which is conducive to the subsequent maintenance of the product, meets the use needs of users, has good usability and a wide range of applications.

[0018] Secondly, the setting of the first flame retardant layer can provide good flame retardant protection for the silencing medium in the silencing chamber, preventing the induced draft fan from bringing hot air into the silencing chamber and affecting the silencing medium and causing ignition, thereby ensuring the safety of the product. At the same time, the setting of the second flame retardant layer improves the fire retardant effect in the silencing chamber and ensures the safety of the silencing medium.

[0019] In addition, the setting of the heat dissipation device allows the silencing medium to transfer heat through the outer plate to the heat dissipation device after being heated to accelerate the heat dissipation, thereby ensuring the use of the silencing medium and having strong practicality. At the same time, the setting of the first stopper is beneficial to the assembly efficiency of the inner plate on the upper plate portion and the lower plate portion, with simple operation and accurate positioning. Moreover, the setting of the second stopper improves the assembly efficiency of the outer plate on the upper plate portion and the lower plate portion, thereby improving the assembly efficiency of the product and having good usability.

[0020] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of an embodiment of the utility model;

[0022] Figure 2 It is a first partial enlarged schematic diagram of an embodiment of the utility model;

[0023] Figure 3 It is a second partial enlarged schematic diagram of an embodiment of the utility model.

[0024] Description of the accompanying drawings:

[0025] 101, first stopper 102, second stopper

[0026] 10. Shell body 11. Upper plate

[0027] 12. Lower plate 13. Inner plate

[0028] 131, opening 14, outer plate

[0029] 15. Silence chamber 16. Exhaust channel

[0030] 17. First flame retardant layer 18. Second flame retardant layer

[0031] 19. Heat dissipation device 191. Third mounting plate

[0032] 192, cooling fin 20, mounting head

[0033] 21. First mounting plate 22. Second mounting plate

[0034] 30. Silencing medium. DETAILED DESCRIPTION

[0035] Please refer to Figures 1 to 3 As shown, it shows the specific structure of an embodiment of the utility model.

[0036] A silencing device for an induced draft fan that is easy to assemble and use, comprising a shell body 10, a mounting head 20 disposed on the shell body 10, and a silencing medium 30; wherein:

[0037] The shell body 10 includes a detachably connected upper plate portion 11, a lower plate portion 12, an inner plate 13, and an outer plate 14, wherein the inner plate 13 and the outer plate 14 are disposed between the upper plate portion 11 and the lower plate portion 12 and are arranged in a spacing manner from the inside to the outside, and a silencing cavity 15 is formed between the upper plate portion 11, the lower plate portion 12, the inner plate 13, and the outer plate 14, and the silencing medium 20 is disposed in the silencing cavity 15, and an exhaust passage 16 opened up and down is formed between the upper plate portion 11, the lower plate portion 12, and the inner plate 13, and a plurality of openings 131 for connecting the silencing cavity with the exhaust passage are opened on the inner plate 13;

[0038] The mounting head 20 is used to install the shell body at the exhaust port of the induced draft fan, and the mounting head 20 is set at any open place; in this embodiment, the silencing medium 30 is silencing cotton, and the silencing cotton is glass fiber silencing cotton or polyester fiber silencing cotton with a porous structure. In this way, through the design of each component, the shell body, the silencing medium and the mounting head and other components are stored and transported separately, and the upper plate part, the lower plate part, the inner plate and the outer plate of the shell body are detachable and connected to facilitate the stacking and storage of the components, thereby reducing the space occupied by the components and the transportation cost. The structural design is ingenious and reasonable, which is conducive to the subsequent maintenance of the product and meets the user's usage needs. It has good usability and a wide range of applications.

[0039] In addition, a first flame retardant layer 17 is provided on the inner side of the inner panel 13, and the first flame retardant layer 17 maintains a distance from the silencing medium 30, and the first flame retardant layer 17 is a porous structure. Here, a second flame retardant layer 18 is provided on the inner wall of the outer panel 14, and the silencing medium 30 is provided on the inner side of the second flame retardant layer 18. Preferably, both the first flame retardant layer 17 and the second flame retardant layer 18 are honeycomb flame retardant cotton. In this way, the setting of the first flame retardant layer can provide good flame retardant protection for the silencing medium in the silencing cavity, prevent the induced draft fan from bringing hot air into the silencing cavity and affecting the silencing medium to cause ignition, thereby ensuring the safety of product use. At the same time, the setting of the second flame retardant layer improves the fire retardant effect in the silencing cavity and ensures the safety of silencing medium use.

[0040] Here, the mounting head 20 has a first mounting plate 21 for connecting to the exhaust port, the center of the first mounting plate 21 has a second mounting plate 22 extending toward the exhaust channel, the second mounting plate 22 extends from the opening into the exhaust channel 16 and is connected to the inner wall of the exhaust channel to facilitate the assembly connection between the mounting head and the shell body.

[0041] In addition, a heat dissipation device 19 is provided on the outer side of the outer plate 14, and the heat dissipation device 19 includes a third mounting plate 191 and heat dissipation fins 192 arranged on the third mounting plate. The third mounting plate 191 is arranged on the outer side of the outer plate 14, and a plurality of heat dissipation fins 192 are provided and arranged in an upper and lower spacing manner on the outer side of the third mounting plate 191. A plurality of heat dissipation fins 192 are provided and arranged in a spacing manner along the periphery of the outer plate. In this way, the setting of the heat dissipation device enables the silencing medium to transfer the heat through the outer plate to the heat dissipation device to accelerate the heat dissipation after being heated, thereby ensuring the use of the silencing medium and having strong practicality.

[0042] In addition, the inner side of the lower end of the upper plate portion 11 and the inner side of the upper end of the lower plate portion 12 are both provided with a first stop portion 101 for positioning and connecting with the inner plate, the outer end of the inner plate 13 is arranged at the inner end of the first stop portion 101, and the outer end of the upper plate portion 11 and the outer end of the lower plate portion 12 are both provided with a second stop portion 102 for positioning and connecting with the outer plate, and the inner end of the outer plate 14 is arranged on the outer side of the second stop portion 102. In this way, the setting of the first stop portion is beneficial to the assembly efficiency of the inner plate on the upper plate portion and the lower plate portion, and the operation is simple and the positioning is accurate. In addition, the setting of the second stop portion improves the assembly efficiency of the outer plate on the upper plate portion and the lower plate portion, thereby improving the assembly efficiency of the product and having good usability.

[0043] The design focus of the utility model is that, mainly through the design of various components, the shell body, the silencing medium and the mounting head and other components are stored and transported separately, and the upper plate part, the lower plate part, the inner plate and the outer plate of the shell body are detachably connected to facilitate the stacking and storage of various components, thereby reducing the occupied space and transportation cost of various components. The structural design is ingenious and reasonable, which is conducive to the subsequent maintenance of the product, meets the use needs of users, has good usability and a wide range of applications;

[0044] Secondly, the setting of the first flame retardant layer can provide good flame retardant protection for the silencing medium in the silencing chamber, preventing the induced draft fan from bringing hot air into the silencing chamber and affecting the silencing medium and causing ignition, thereby ensuring the safety of the product. At the same time, the setting of the second flame retardant layer improves the fire retardant effect in the silencing chamber and ensures the safety of the silencing medium.

[0045] In addition, the setting of the heat dissipation device allows the silencing medium to transfer heat through the outer plate to the heat dissipation device after being heated to accelerate the heat dissipation, thereby ensuring the use of the silencing medium and having strong practicality. At the same time, the setting of the first stopper is beneficial to the assembly efficiency of the inner plate on the upper plate portion and the lower plate portion, with simple operation and accurate positioning. Moreover, the setting of the second stopper improves the assembly efficiency of the outer plate on the upper plate portion and the lower plate portion, thereby improving the assembly efficiency of the product and having good usability.

[0046] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An induced draft fan silencer that is easy to assemble and use. Features: It includes a shell body and a mounting head and a sound-absorbing medium arranged on the shell body; wherein: the shell body includes an upper plate portion, a lower plate portion, an inner plate and an outer plate which are detachably connected; the inner plate and the outer plate are arranged between the upper plate portion and the lower plate portion and are arranged in a spacing manner from the inside to the outside; a sound-absorbing cavity is formed between the upper plate portion, the lower plate portion, the inner plate and the outer plate; the sound-absorbing medium is arranged in the sound-absorbing cavity; an exhaust passage which is open up and down is formed between the upper plate portion, the lower plate portion and the inner plate; a plurality of openings for connecting the sound-absorbing cavity with the exhaust passage are opened on the inner plate; the mounting head is used to mount the shell body at the exhaust port; the mounting head is arranged at any opening.

2. According to claim 1, an induced draft fan silencer device that is easy to assemble and use, Features: A first flame retardant layer is arranged on the inner side of the inner plate, the first flame retardant layer is kept at a distance from the sound-absorbing medium, and the first flame retardant layer is a porous structure.

3. According to claim 1, an induced draft fan silencer device that is easy to assemble and use, Features: The inner wall of the outer plate is provided with a second flame retardant layer, and the sound-absorbing medium is provided on the inner side of the second flame retardant layer.

4. According to claim 1, an induced draft fan silencer device that is easy to assemble and use, Features: The sound-absorbing medium is sound-absorbing cotton.

5. According to claim 4, an induced draft fan silencer device that is easy to assemble and use, Features: The sound-absorbing cotton is glass fiber sound-absorbing cotton or polyester fiber sound-absorbing cotton with a porous structure.

6. The induced draft fan silencer device that is easy to assemble and use according to claim 1, Features: The mounting head has a first mounting plate for connecting with the exhaust port, the center of the first mounting plate has a second mounting plate extending toward the exhaust passage, the second mounting plate extends from the opening into the exhaust passage and is connected to the inner wall of the exhaust passage.

7. The induced draft fan silencer device that is easy to assemble and use according to claim 1, Features: A heat dissipation device is arranged on the outer side of the outer plate.

8. The induced draft fan silencer device that is easy to assemble and use according to claim 7, Features: The heat dissipation device comprises a third mounting plate and heat dissipation fins arranged on the third mounting plate. The third mounting plate is arranged on the outside of the outer plate. The heat dissipation device is provided with a plurality of heat dissipation fins arranged in a spaced manner along the periphery of the outer plate.

9. The induced draft fan silencer device that is easy to assemble and use according to claim 1, Features: A first stopper for positioning and connecting with the inner plate is disposed on the inner side of the lower end of the upper plate portion and the inner side of the upper end of the lower plate portion, and the outer end of the inner plate is disposed at the inner end of the first stopper.

10. The induced draft fan silencer device that is easy to assemble and use according to claim 1, Features: The outer ends of the upper plate portion and the lower plate portion are both provided with a second stopper for positioning and connecting with the outer plate, and the inner end of the outer plate is arranged on the outer side of the second stopper.

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