Mounting structure of fire smoke exhaust fan

Abstract

The application relates to the field of fire-fighting equipment, in particular to a mounting structure of a fire-fighting smoke exhaust fan, which comprises a fan body and a mounting device for mounting the fan body, the mounting device comprises a mounting platform located below a roof surface, a plurality of hangers for hoisting and fixing the mounting platform on the roof surface, and a damping mechanism arranged on the mounting platform, the fan body is arranged on the mounting platform, the damping mechanism comprises a mounting cylinder slidingly arranged on the mounting platform and a first damping assembly for damping and adjusting the mounting cylinder, the fan body is arranged on the mounting cylinder, the first damping assembly comprises a supporting seat fixed on the mounting cylinder and a guide rod fixed on the mounting platform, the supporting seat is located between the mounting cylinder and the mounting platform, the length direction of the guide rod is the same as the axis direction of the fan body, the guide rod horizontally penetrates through the supporting seat, and the supporting seat and the guide rod are in sliding fit. The application has the effect of eliminating vibration generated in the use process of the fire-fighting smoke exhaust fan.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fire-fighting equipment, in particular to a mounting structure of a fire-fighting smoke exhaust fan. BACKGROUND

[0002] With the development of the construction industry, the problem of building fire protection becomes increasingly important. The modern buildings completed in recent years need to set up a fire-fighting smoke exhaust system to timely exhaust the smoke generated during the building fire, so as to reduce the personal injury and property loss caused by high-temperature smoke during the fire.

[0003] The fire-fighting smoke exhaust system of the building mostly uses smoke exhaust fans and smoke exhaust valves and other devices. When the fire-fighting smoke exhaust fan is installed indoors, the fire-fighting smoke exhaust fan is fixed on the indoor roof by a boom and other equipment, and a smoke exhaust duct is connected to the air outlet of the fire-fighting smoke exhaust fan. A fire valve and other equipment are installed on the smoke exhaust duct, so as to exhaust the smoke generated during the indoor fire to the outdoor. In addition, the fire-fighting smoke exhaust fan can construct a smoke exhaust system suitable for different environments according to different installation occasions. When the fire-fighting smoke exhaust system is configured, especially when the smoke exhaust fan is used, not only the emergency requirements during the fire should be considered, but also the role of the smoke exhaust fan in daily ventilation should be considered. Thus, higher requirements are put forward for the smoke exhaust fan. The smoke exhaust fan not only needs to meet the normal operation under the fire-fighting state (280℃ normal operation for 0.5 hours, 250℃ normal operation for 1 hour), but also needs to meet the normal operation of daily ventilation.

[0004] In the use process of the existing fire-fighting smoke exhaust fan, the smoke exhaust fan itself will produce a certain vibration due to the rotation of the exhaust fan. When the smoke exhaust fan is used for a long time, the vibration will gradually accumulate and increase. When the vibration intensity is too large, the smoke exhaust fan is prone to be damaged, or the position where the smoke exhaust fan is fixed is prone to be broken. SUMMARY

[0005] In order to avoid the vibration of the fire-fighting smoke exhaust fan in the use process, the present application provides a mounting structure of a fire-fighting smoke exhaust fan.

[0006] The mounting structure of the fire-fighting smoke exhaust fan provided by the present application adopts the following technical scheme:

[0007] The mounting structure of the fire smoke exhaust fan comprises a fan body and a mounting device for mounting the fan body, the mounting device comprises a mounting platform located below a roof surface, a plurality of hangers for hoisting and fixing the mounting platform on the roof surface, and a damping mechanism arranged on the mounting platform, the fan body is arranged on the mounting platform, the damping mechanism comprises a mounting cylinder slidingly arranged on the mounting platform and a first damping assembly for damping and adjusting the mounting cylinder, the fan body is arranged on the mounting cylinder, the first damping assembly comprises a support seat fixed on the mounting cylinder and a guide rod fixed on the mounting platform, the support seat is located between the mounting cylinder and the mounting platform, the length direction of the guide rod is the same as the axis direction of the fan body, the guide rod horizontally penetrates through the support seat, and the support seat and the guide rod are in sliding fit.

[0008] By adopting the above technical scheme, when the fire smoke exhaust fan is exhausting smoke, an opposite force and vibration to the wind direction are generated during rotation of a fan inside the fan body, the first damping assembly is arranged to allow the fan body to be slidingly adjusted on the surface of the mounting platform, so as to offset the generated opposite force and vibration, the fan body and the mounting platform are flexibly connected, the influence of the vibration on the fan body is prevented, and damage of the connection between the fan body and the mounting platform is avoided.

[0009] Optionally, a pair of first damping springs are sleeved on the guide rod, the two first damping springs are symmetrically arranged on both sides of the support seat, one end of each first damping spring is fixed to the support seat, and the other end is fixed to the mounting platform.

[0010] By adopting the above technical scheme, the first damping springs absorb the opposite force and vibration generated by the fan through compression deformation, so as to achieve the energy absorption effect, and the fan body returns to the initial position under the action of the first damping springs when the fan body stops working.

[0011] Optionally, two groups of the first damping assemblies are arranged on the mounting platform, and the two groups of first damping assemblies are symmetrically arranged between the mounting cylinder and the mounting platform.

[0012] By adopting the above technical scheme, the two groups of first damping assemblies arranged on the mounting platform can form stable support on both sides of the mounting cylinder, so as to avoid tilting of the mounting cylinder to one side, and the two groups of first damping assemblies are arranged to make the mounting cylinder slide more smoothly on the mounting platform.

[0013] Optionally, a plurality of rotating rollers are rotatably arranged on the surface of the mounting platform, the axis of the rotating roller is perpendicular to the axis of the fan body, and the support seat is located on the plurality of rotating rollers.

[0014] By adopting the above technical scheme, the plurality of rotating rollers arranged on the surface of the mounting platform can reduce the friction between the supporting seat and the upper surface of the mounting platform, so that the supporting seat can slide more easily on the upper surface of the mounting platform.

[0015] Optionally, the mounting cylinder is arranged with a second damping assembly, the mounting cylinder is sleeved outside the fan body, and the axis direction of the fan body is the same as the axis direction of the mounting cylinder, the second damping assembly comprises a plurality of second damping springs arranged between the inner wall of the mounting cylinder and the outer wall of the fan body, the plurality of second damping springs are uniformly distributed in the circumferential direction of the axis of the fan body, one end of the second damping spring is fixed to the inner wall of the mounting cylinder, and the other end is fixed to the outer wall of the fan body.

[0016] By adopting the above technical scheme, the plurality of second damping springs arranged in the annular gap between the mounting cylinder and the fan body can form a flexible connection between the fan body and the mounting cylinder, and when the fan body vibrates, the vibration can be absorbed through the compression deformation of the second damping spring.

[0017] Optionally, the second damping assembly is provided with two groups, the two groups of second damping assemblies are symmetrically arranged on the fan body and close to the air inlet or the air outlet of the fan body.

[0018] By adopting the above technical scheme, the two groups of second damping assemblies arranged inside the mounting cylinder can form stable support for the fan body, so that the fan body will not swing irregularly during work, and the two ends of the fan body will not repeatedly hit the two ends of the mounting cylinder.

[0019] Optionally, the mounting cylinder is composed of a pair of semicylinders of the same size, a fixed plate extending outward is fixed at the joint of the two semicylinders, and the two fixed plates on the same side of the two semicylinders are fixed by bolts.

[0020] By adopting the above technical scheme, the two semicylinders can be easily opened to better fix the fan body inside the mounting cylinder.

[0021] Optionally, a third damping assembly is arranged between the inner wall of the mounting cylinder and the outer wall of the fan body, the third damping assembly comprises a pair of first sealing rings fixed on the outer wall of the fan body and a pair of second sealing rings fixed on the inner wall of the mounting cylinder, an annular sealing groove is formed in the second sealing ring, the first sealing ring is inserted and matched in the sealing groove, and the first sealing ring can rotate in the sealing groove without being taken out of the sealing groove, a hollow and sealed damping cavity is formed between the mounting cylinder, the fan body, the two first sealing rings and the two second sealing rings, and the damping cavity is filled with liquid.

[0022] By adopting the technical scheme, the liquid filled in the damping cavity can form a buffer layer in the gap between the mounting cylinder and the fan body, and the impact force and the generated vibration can be absorbed by extruding the liquid.

[0023] Optionally, the liquid filled in the damping cavity is cooling liquid.

[0024] By adopting the technical scheme, the filled cooling liquid can not only realize the damping and energy absorption effect, but also lower the temperature of the fan body, so as to prevent the normal work of the fan body from being affected by the high temperature.

[0025] Optionally, the motor in the fan body is externally sleeved with a heat dissipation cylinder, the cylinder wall of the heat dissipation cylinder is a hollow structure, and a pair of connecting pipes are communicated on the cylinder wall of the heat dissipation cylinder, and the ends of the two connecting pipes away from the heat dissipation cylinder are connected to the inner wall of the fan body and communicated with the damping cavity.

[0026] By adopting the technical scheme, the heat dissipation cylinder can lower the temperature generated by the motor during work, and can form a heat insulation layer outside the motor to prevent the high-temperature flue gas from affecting the motor. In addition, the liquid in the heat dissipation cylinder is communicated with the liquid in the damping cavity through the connecting pipes, so that the liquid can flow and circulate in time, and the liquid in the heat dissipation cylinder cannot continue to realize the corresponding effect after the temperature of the liquid is increased.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. The first damping assembly and the second damping assembly are arranged, so that the fan body and the mounting platform are connected in multiple stages, and the impact force and the vibration generated in all directions of the fan body during smoke exhaust can be absorbed, so that the connection position is not damaged, and the vibration does not affect the fan body itself.

[0029] 2. The third damping assembly arranged between the mounting cylinder and the fan body can absorb the vibration and the impact force generated during the work of the fan body, and lower the temperature of the fan body, so as to prevent the service life of the fan body from being affected by the high temperature. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0031] Figure 2 is a schematic diagram of the damping mechanism of the embodiment of the present application;

[0032] Figure 3 is a schematic diagram of the internal structure of the third damping assembly of the embodiment of the present application.

[0033] Explanation of reference signs: 1, fan body; 2, mounting platform; 21, boom; 22, rotating roller; 3, mounting cylinder; 31, half cylinder; 32, fixed plate; 4, first damping assembly; 41, support seat; 42, guide rod; 43, first damping spring; 5, second damping assembly; 51, second damping spring; 6, third damping assembly; 61, first sealing ring; 62, second sealing ring; 621, sealing groove; 63, sealing pad; 64, damping cavity; 7, box body; 71, liquid inlet pipe; 72, liquid outlet pipe; 73, liquid inlet pump; 8, heat dissipation cylinder; 81, connecting pipe; 9, heat dissipation pipe. DETAILED DESCRIPTION

[0034] The following will be described in detail with reference to the accompanying drawings. Figures 1-3 The application is further described in detail.

[0035] The application discloses a mounting structure of a fire-fighting smoke exhaust fan.

[0036] Reference Figure 1 A mounting structure of a fire-fighting smoke exhaust fan comprises a mounting device arranged below a roof surface of a house and a fan body 1 arranged on the mounting device, the mounting device comprises a mounting platform 2 arranged close to the roof surface of the house, the fan body 1 is arranged on the mounting platform 2, a plurality of booms 21 are vertically and fixedly connected at positions of the periphery edges of the mounting platform 2, and the ends, away from the mounting platform 2, of the booms 21 are fixed to the roof surface of the house; when the fire-fighting smoke exhaust fan is mounted in a mounting chamber, a worker determines the position of the mounting platform 2 in advance, fixes the booms 21 to the roof surface of the house, and then mounts the fan body 1 on the mounting platform 2; a smoke exhaust pipe is connected to the air outlet of the fan body 1, the end, away from the fan body 1, of the smoke exhaust pipe is communicated to the outside, and a fireproof valve is connected to the smoke exhaust pipe to prevent the fan body 1 from introducing an open fire in the house into the smoke exhaust pipe in the process of exhausting smoke in the house.

[0037] Reference Figure 1 and Figure 2, the mounting device further comprises a damping mechanism arranged on the mounting platform 2, the damping mechanism comprises a mounting cylinder 3 slidingly arranged above the mounting platform 2 and a first damping assembly 4 arranged on the mounting platform 2, the mounting cylinder 3 is hollow and open at both ends, the length direction of the mounting cylinder 3 is the same as the length direction of the mounting platform 2, the fan body 1 is fixed inside the mounting cylinder 3, the axis direction of the mounting cylinder 3 is the same as the axis direction of the fan body 1, when the fan body 1 starts, the fan inside the fan body 1 will generate a force in the opposite direction during rotation, so that the mounting cylinder 3 can slide along the length direction of the mounting platform 2, and the first damping assembly 4 can absorb the displacement amount of the mounting cylinder 3 sliding in the horizontal direction; the first damping assembly 4 is located at the position between the mounting cylinder 3 and the mounting platform 2, and the first damping assembly 4 is symmetrically arranged between the outer wall of the mounting cylinder 3 and the upper surface of the mounting platform 2. In the embodiment of the application, two groups of first damping assemblies 4 are taken as examples for illustration, but the number of the first damping assemblies 4 is not limited to two groups, the first damping assembly 4 comprises a support seat 41 fixed on the outer wall of the mounting cylinder 3 on the side facing the mounting platform 2 and a guide rod 42 arranged on the upper surface of the mounting platform 2, the length direction of the support seat 41 is perpendicular to the axis direction of the fan body 1, the length direction of the guide rod 42 is the same as the axis direction of the fan body 1, and the two ends of the guide rod 42 are fixed above the mounting platform 2 by the vertical plates arranged thereon, the guide rod 42 horizontally penetrates through the support seat 41, and the support seat 41 can move along the guide rod 42, the two support seats 41 located on both sides of the mounting cylinder 3 are integrally formed, and the sliding cooperation of the two groups of guide rods 42 and support seats 41 can form stable support on both sides of the mounting cylinder 3, so that the movement of the mounting cylinder 3 is more stable; a pair of first damping springs 43 are sleeved on the guide rod 42, the two first damping springs 43 are symmetrically arranged at the positions on both sides of the support seat 41, one end of the first damping spring 43 is fixed with the support seat 41, and the other end is fixed with the mounting platform 2, when the fire smoke exhaust fan works, the fan body 1 will generate a certain reverse force, so that the fan body 1 can slide along the direction of the guide rod 42, and the first damping spring 43 is compressed, so that the first damping spring 43 absorbs the impact force generated when the fan body 1 works, and when the fire smoke exhaust fan stops working, the fan body 1 returns to the initial position under the action of the first damping spring 43.

[0038] A plurality of rotating rollers 22 are rotatably connected to the upper surface of the mounting platform 2, the length direction of the rotating roller 22 is perpendicular to the length direction of the guide rod 42, and the plurality of rotating rollers 22 are uniformly distributed along the length direction of the guide roller, the support seat 41 can be placed on the adjacent plurality of rotating rollers 22, and when the support seat 41 moves, the rotating roller 22 can reduce the friction between the support seat 41 and the upper surface of the mounting platform 2, so that the support seat 41 can slide more easily on the upper surface of the mounting platform 2.

[0039] With reference to Figure 1 And Figure 2 , the mounting cylinder 3 includes a pair of half-cylinders 31 of the same size and structure, the two half-cylinders 31 are spliced into a complete mounting cylinder 3, and a fixed plate 32 extending horizontally and outward is fixedly connected at the splicing position of the two half-cylinders 31, when the two half-cylinders 31 are spliced, the two fixed plates 32 on the same side of the half-cylinders 31 are sealingly attached, and a sealing gasket 63 is arranged between the fixed plates 32, the two fixed plates 32 on the same side of the half-cylinders 31 are fixedly connected by a plurality of bolts, when the fan body 1 is installed inside the mounting cylinder 3, the two half-cylinders 31 arranged can facilitate the worker to open the two half-cylinders 31, and then fix the fan body 1 inside the mounting cylinder 3.

[0040] Two groups of second damping assemblies 5 are symmetrically arranged between the inner wall of the mounting cylinder 3 and the outer wall of the fan body 1 and close to the opening positions of the two ends of the mounting cylinder 3, the second damping assembly 5 includes a plurality of second damping springs 51 arranged between the mounting cylinder 3 and the fan body 1, the plurality of second damping springs 51 are uniformly distributed along the axis of the mounting cylinder 3, one end of the second damping spring 51 is fixed with the inner wall of the mounting cylinder 3, and the other end is fixed with the outer wall of the fan body 1, the second damping assembly 5 arranged can absorb the impact force of the fan body 1 in the vertical direction perpendicular to the guide rod 42 and the circumferential direction of the mounting cylinder 3, so as to avoid the gradually increasing vibration of the fan body 1 inside the mounting cylinder 3; the two groups of second damping assemblies 5 arranged close to the opening positions of the two ends of the mounting cylinder 3 make the connection of the fan body 1 inside the mounting cylinder 3 more stable, and prevent the air inlet or air outlet of the fan body 1 from colliding with the opening of the mounting cylinder 3 when adjusting the impact force received by the fan body 1.

[0041] With reference to Figure 1 、 Figure 2 And Figure 3Since the second damping springs 51 are arranged between the inner wall of the mounting cylinder 3 and the outer wall of the fan body 1, there is an annular gap between the inner wall of the mounting cylinder 3 and the outer wall of the fan body 1, and the third damping assembly 6 is arranged in the annular gap between the inner wall of the mounting cylinder 3 and the outer wall of the fan body 1. The third damping assembly 6 includes a pair of first sealing rings 61 fixed on the outer wall of the fan body 1 and a pair of second sealing rings 62 fixed on the inner wall of the mounting cylinder 3. The two first sealing rings 61 are located near the air inlet and the air outlet of the fan body 1, and the two second sealing rings 62 are located near the two open ends of the mounting cylinder 3. An annular sealing groove 621 is formed on the inner circumferential surface of the second sealing ring 62 facing the fan body 1, and a matching sealing gasket 63 is fixed in the sealing groove 621. The first sealing ring 61 is inserted and matched in the sealing groove 621. In the embodiment of the application, the ring width of the first sealing ring 61 is greater than or equal to the ring width of the second sealing ring 62, the outer diameter of the first sealing ring 61 is greater than the inner diameter of the second sealing ring 62 and less than the outer diameter of the second sealing ring 62, and in the initial state, the ring width of the first sealing ring 61 inserted into the sealing groove 621 is greater than or equal to half of the ring width of the second sealing ring 62, so that the first sealing ring 61 can rotate in the sealing groove 621 without falling out of the sealing groove 621, and can adapt to the shaking of the fan body 1 when the second damping spring 51 absorbs the impact force. Since the first sealing ring 61 is arranged in the sealing groove 621 on the second sealing ring 62, the fan body 1 can rotate inside the mounting cylinder 3 about the axis of the mounting cylinder 3. A hollow and sealed damping cavity 64 is formed between the mounting cylinder 3, the fan body 1, the two first sealing rings 61 and the two second sealing rings 62. The damping cavity 64 is filled with liquid. When the fan body 1 moves relatively inside the mounting cylinder 3, the liquid in the damping cavity 64 can be squeezed, and the liquid in the damping cavity 64 can shake back and forth in the damping cavity 64, which plays a good damping and energy absorption effect, avoiding the impact of the fan body 1 on the mounting cylinder 3.

[0042] Referring to Figure 1 , Figure 2 and Figure 3 , the liquid filled in the damping cavity 64 is cooling liquid. When the third damping assembly 6 damps and absorbs energy of the fan body 1, the cooling liquid can also cool the fan body 1, avoiding the temperature of the fan body 1 gradually rising in the process of the fan body 1 discharging high-temperature flue gas for a long time, so that the fan body 1 stops working due to high temperature.

[0043] A hollow box 7 is fixed on the installation platform 2 and located at one side of the installation cylinder 3. The box 7 is filled with cooling liquid. An inlet pipe 71 and an outlet pipe 72 are connected to the outer wall of the installation cylinder 3. The ends of the inlet pipe 71 and the outlet pipe 72 are connected to the inside of the damping cavity 64. The ends of the inlet pipe 71 and the outlet pipe 72 away from the installation cylinder 3 are communicated to the inside of the box 7. The end of the inlet pipe 71 away from the box 7 is communicated to the inside of the damping cavity 64 from the lower side of the installation cylinder 3 close to the installation platform 2. The end of the outlet pipe 72 away from the box 7 is communicated to the inside of the damping cavity 64 from the upper side of the installation cylinder 3 away from the installation platform 2. The liquid in the inside of the damping cavity 64 can gradually fill the inside of the damping cavity 64 from bottom to top. The excess cooling liquid can flow back to the inside of the box 7 through the outlet pipe 72. The materials of the inlet pipe 71 and the outlet pipe 72 are flexible hoses, which can adapt to the horizontal movement of the installation cylinder 3 on the installation platform 2. An inlet pump 73 is connected to the inlet pipe 71. The cooling liquid in the inside of the box 7 can quickly fill the inside of the damping cavity 64. The liquid in the inside of the damping cavity 64 can circulate, avoiding the cooling liquid in the inside of the damping cavity 64 from rising in temperature and failing to achieve good cooling effect.

[0044] Referring to Figure 1 , Figure 2 and Figure 3 , a heat dissipation cylinder 8 is sleeved on the motor in the fan body 1. The cylinder wall of the heat dissipation cylinder 8 is hollow. A pair of connecting pipes 81 are connected to the cylinder wall of the heat dissipation cylinder 8. The connecting pipes 81 are high-temperature-resistant metal pipes, avoiding the influence of high-temperature flue gas. The ends of the two connecting pipes 81 away from the heat dissipation cylinder 8 are connected to the housing of the heat dissipation fan body 1 and communicated to the inside of the damping cavity 64. The cooling liquid in the inside of the damping cavity 64 can flow into the inside of the heat dissipation cylinder 8. The motor in the inside of the fan body 1 generates heat during operation and the heat generated during the exhaust process can affect the motor. The heat dissipation cylinder 8 can cool the motor itself and prevent high-temperature flue gas from affecting the normal operation of the motor.

[0045] A plurality of rectangular heat dissipation pipes 9 are fixedly connected in the inside of the fan body 1 and close to the air inlet. The plurality of heat dissipation pipes 9 are evenly distributed along the diameter direction of the fan body 1. Each heat dissipation pipe 9 is arranged at a certain inclination angle with the diameter direction at the air inlet of the fan body 1. Adjacent two heat dissipation pipes 9 form a channel for high-temperature flue gas. The heat dissipation pipe 9 is hollow and open at both ends. The two ends of the heat dissipation pipe 9 are communicated to the inside of the damping cavity 64. The cooling liquid in the inside of the damping cavity 64 can flow into the inside of the heat dissipation pipe 9. When the high-temperature flue gas is sucked into the inside of the fan body 1, it can be cooled first by the heat dissipation pipe 9, avoiding the influence of high-temperature flue gas on the service life of the fan body 1.

[0046] The implementation principle of the mounting structure of the fire smoke exhaust fan provided in the embodiments of the present application is as follows: when the fan body 1 is working, the first damping assembly 4 can absorb the vibration of the fan body 1 in the axial direction, the second damping assembly 5 can absorb the vibration of the fan body 1 in the circumferential direction and the vertical direction, and the third damping assembly 6 can enhance the damping effect, so that the vibration of the fan body 1 in the rotating direction can be absorbed, and the third damping assembly 6 can also cool the high-temperature flue gas discharged, so as to prevent the high-temperature flue gas from affecting the normal work of the fan body 1.

[0047] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An installation structure for a fire-fighting smoke exhaust fan, characterized in that: The fan body (1) and the mounting device for mounting the fan body (1), the mounting device includes a mounting platform (2) located below the roof surface, a plurality of hangers (21) for hoisting and fixing the mounting platform (2) on the roof surface, and a damping mechanism arranged on the mounting platform (2), the fan body (1) is arranged on the mounting platform (2), the damping mechanism includes a mounting cylinder (3) slidingly arranged on the mounting platform (2) and a first damping assembly (4) for damping adjustment of the mounting cylinder (3), the fan body (1) is arranged on the mounting cylinder (3), the first damping assembly (4) includes a support seat (41) fixed on the mounting cylinder (3) and a guide rod (42) fixed on the mounting platform (2), the support seat (41) is located between the mounting cylinder (3) and the mounting platform (2), the length direction of the guide rod (42) is the same as the axis direction of the fan body (1), the guide rod (42) horizontally passes through the support seat (41), and the support seat (41) and the guide rod (42) are in sliding fit; A pair of first damping springs (43) are sleeved on the guide rod (42), the two first damping springs (43) are symmetrically arranged on both sides of the support seat (41), one end of the first damping spring (43) is fixed with the support seat (41), and the other end is fixed with the mounting platform (2); The mounting cylinder (3) is provided with a second damping assembly (5), the mounting cylinder (3) is sleeved outside the fan body (1), and the axis direction of the fan body (1) is the same as the axis direction of the mounting cylinder (3), the second damping assembly (5) includes a plurality of second damping springs (51) arranged between the inner wall of the mounting cylinder (3) and the outer wall of the fan body (1), the plurality of second damping springs (51) are uniformly distributed along the axis of the fan body (1), one end of the second damping spring (51) is fixed with the inner wall of the mounting cylinder (3), and the other end is fixed with the outer wall of the fan body (1); A third damping assembly (6) is arranged between the inner wall of the mounting cylinder (3) and the outer wall of the fan body (1), the third damping assembly (6) includes a pair of first sealing rings (61) fixed on the outer wall of the fan body (1) and a pair of second sealing rings (62) fixed on the inner wall of the mounting cylinder (3), the second sealing ring (62) is provided with an annular sealing groove (621), the first sealing ring (61) is inserted and matched in the sealing groove (621), and the first sealing ring (61) can rotate in the sealing groove (621) and cannot be taken out of the sealing groove (621), a hollow and sealed damping cavity (64) is formed between the mounting cylinder (3), the fan body (1), the two first sealing rings (61) and the two second sealing rings (62), and the damping cavity (64) is filled with liquid; The liquid filled in the damping cavity (64) is cooling liquid; The motor outside the fan body (1) is externally sleeved with a heat dissipation cylinder (8), the cylinder wall of the heat dissipation cylinder (8) is a hollow structure, the cylinder wall of the heat dissipation cylinder (8) is communicated with a pair of connecting pipes (81), the two connecting pipes (81) are connected to the inner wall of the fan body (1) and communicated with the damping cavity (64) at the end away from the heat dissipation cylinder (8).

2. The mounting structure for a smoke exhaust fan of claim 1, wherein: The first damping assembly (4) is provided with two groups on the mounting platform (2), and the two first damping assemblies (4) are symmetrically arranged between the mounting cylinder (3) and the mounting platform (2).

3. The mounting structure for a smoke exhaust fan of claim 1, wherein: A plurality of rotating rollers (22) are rotatably arranged on the surface of the mounting platform (2), the axis of the rotating roller (22) is perpendicular to the axis of the fan body (1), and the support seat (41) is located on the plurality of rotating rollers (22).

4. The mounting structure for a smoke exhaust fan of claim 1, wherein: The second damping assembly (5) is provided with two groups, and the two groups of second damping assemblies (5) are symmetrically arranged on the fan body (1) and close to the air inlet or air outlet of the fan body (1).

5. The mounting structure for a smoke exhaust fan of claim 1, wherein: The mounting cylinder (3) is composed of a pair of semicylinders (31) with the same size, the two semicylinders (31) are fixed with outwardly extending fixing plates (32) at the splicing positions, and the two fixing plates (32) on the same side of the two semicylinders (31) are fixed by bolts.

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