A fire-fighting fan device convenient for installation

Abstract

The present application relates to a fire-fighting conveniently installed fire-fighting fan device, belonging to the field of fire-fighting fans, which includes an outer cylinder, a motor is arranged inside the outer cylinder, a fan is fixedly connected to the output shaft of the motor, abutment rings are fixedly connected to both ends of the outer cylinder inside the outer cylinder, and a plurality of clamping plates are slidably connected to both ends of the outer cylinder, and the plurality of clamping plates can clamp the ends of the pipes placed inside the outer cylinder and abutting against the abutment rings. The present application has the effect of facilitating the connection operation of the fire-fighting fan and the pipe.

Description

Technical Field

[0001] The present application relates to the field of fire fighting fans, and in particular to a fire fighting fan device that is easy to install for fire fighting. Background Art

[0002] A fire-fighting fan refers to an industrial fan that can operate continuously for more than 60 minutes at a high temperature of 300°C and for 20 hours at a temperature of 100°C without damage.

[0003] During daily use of the fire-fighting fan, it is necessary to connect pipes at both ends of the fire-fighting fan, and guide the air inlet and outlet of the fire-fighting fan through the pipes, so as to achieve accurate smoke exhaust in a certain area.

[0004] During use, pipes with flanges at the ends are generally used, and the connection between the end of the fire-fighting fan and the flange at the end of the pipe is generally bolted. The bolted connection method can make the connection between the fire-fighting fan and the pipe more stable, but it is also easy to cause trouble in connecting the threaded holes between the fire-fighting fan and the pipe, resulting in the problem of time-consuming and labor-intensive connection between the fire-fighting fan and the pipe. Summary of the invention

[0005] In order to facilitate the connection operation between the fire-fighting fan and the pipeline, the present application provides a fire-fighting fan device that is easy to install.

[0006] The present application provides a fire-fighting fan device that is easy to install and adopts the following technical solution:

[0007] A fire-fighting fan device that is easy to install for firefighting comprises an outer cylinder, a motor is arranged inside the outer cylinder, a fan is fixedly connected to the output shaft of the motor, abutment rings are fixedly connected at both ends of the outer cylinder inside the outer cylinder, and a plurality of clamping plates are slidably connected to both ends of the outer cylinder, and the plurality of clamping plates can clamp the ends of the pipes placed inside the outer cylinder and abutting against the abutment rings.

[0008] By adopting the above technical solution, when it is necessary to connect the fire-fighting fan and the pipeline, the pipeline is inserted into the inside of the outer tube, and the pipeline is abutted with the abutment ring of the outer tube. Then, the pipeline and the abutment ring are connected by a clamp plate, so that the pipeline and the abutment ring are abutted, thereby achieving a preliminary connection between the pipeline and the abutment ring. Then, the pipeline and the abutment ring are connected by bolts, thereby achieving a full connection between the pipeline and the abutment ring. By setting a clamp plate for the preliminary connection of the pipeline and the abutment ring, the trouble of docking the pipeline and the abutment ring can be reduced, thereby facilitating the process of connecting the pipeline and the abutment ring by the staff.

[0009] Optionally, a connection assembly is connected between the plurality of clamps and the output shaft of the motor, and the connection assembly can drive the plurality of clamps to clamp the pipes at both ends of the outer tube under the drive of the motor.

[0010] By adopting the above technical solution and setting up a connecting assembly, the motor can drive the clamping plate to move through the connecting assembly during rotation, and drive the pipe to abut against the abutment ring through the clamping plate, thereby reducing the trouble of workers moving the clamping plate.

[0011] Optionally, the connecting assembly includes a driving bevel gear connected to the output shaft of the motor and driven by the output shaft of the motor, the driving bevel gear meshing with a driven bevel gear, one side of the driven bevel gear is fixedly connected to a driving gear, the driving gear is meshed with an end face gear ring near each end of the outer cylinder, each end face gear ring is meshed with a plurality of connecting gears on a side near an adjacent outer cylinder end, the plurality of connecting gears are arranged in a one-to-one correspondence with the plurality of clamps, each connecting gear is fixedly connected to a driving screw on a side near the corresponding clamp, each driving screw is threadedly inserted with a screw connecting block on a side near an adjacent clamp, each screw connecting block is connected to an adjacent clamp, and each clamp is inserted into the inner setting of the outer cylinder along the radial sliding direction of the adjacent outer cylinder.

[0012] By adopting the above technical solution, during the rotation of the motor, the motor drives the driving bevel gear to rotate, the driving bevel gear drives the driven bevel gear to rotate during the rotation, the driven bevel gear drives the connected driving gear to rotate during the rotation, the driving gear drives the two connected end face gear rings to rotate during the rotation, each end face gear ring drives the multiple connected connecting gears to rotate during the rotation, each connecting gear drives the connected driving screw to rotate during the rotation, each driving screw drives the connected screw connecting block to move during the rotation, and each screw connecting block drives the connected clamping plate to move during the movement, so that the multiple clamping plates can cooperate with each other to clamp the pipeline.

[0013] Optionally, a slider is fixedly connected to one side of the clamping plate close to the screw connecting block, the cross-section of the slider is set to be rectangular and smaller than the cross-section of the clamping plate, the slider is slidably connected to the screw connecting block along the length direction of the outer cylinder, the outer cylinder is provided with a horizontal opening for the slider to slide along the length direction of the outer cylinder, and the side wall of the outer cylinder close to each slider is connected to a pressure spring that can drive the slider to move toward the direction close to the adjacent abutment ring.

[0014] By adopting the above technical solution, when the driving screw drives the clamp to move to the inside of the outer tube, under the action of the pressure spring, the pressure spring drives the slider to move along the horizontal mouth, so that the clamp can drive the pipe to abut against the abutment ring, thereby reducing the phenomenon that the abutment ring is difficult to drive the flange at the end of the pipe to abut against the abutment ring due to changes in the flange size of the pipe.

[0015] Optionally, a blocking net is fixedly connected to the interior of each abutment ring.

[0016] By adopting the above technical solution and setting a blocking net, it is possible to reduce the occurrence of impurities entering the fan or motor through the pipeline and affecting the normal operation of the fan.

[0017] Optionally, each of the screens is connected to a scraper assembly capable of scraping impurities in the gaps between the screens.

[0018] By adopting the above technical solution and setting up a scraper assembly, it is possible to reduce the amount of impurities adhering to the screen.

[0019] Optionally, the barrier net is composed of a plurality of railings spaced apart from each other, and the scraper assembly includes a scraper plate located between two adjacent railings, and the plurality of scraper plates connected to the same barrier net are connected to the same connecting block, and the connecting block can drive the plurality of scraper plates to move along the length direction of the adjacent railings.

[0020] By adopting the above technical solution, when impurities are attached to the railing, the connecting block can be driven to move along the length direction of the railing, so that the connecting block drives the multiple scraper plates connected to it to move along the length direction of the railing, thereby realizing the process of scraping away the impurities attached to the railing through the scraper plates.

[0021] Optionally, each of the connecting blocks is penetrated by and threadedly connected with a reciprocating screw, each of the reciprocating screws is arranged parallel to the adjacent railings, and one end of each of the reciprocating screws penetrates the adjacent outer cylinder and is rotatably connected to the outer cylinder.

[0022] By adopting the above technical solution and arranging a reciprocating screw, the reciprocating screw can be rotated to drive multiple scraper plates to move along the length direction of the railing, thereby facilitating the process of workers moving the connecting blocks.

[0023] Optionally, one end of each reciprocating screw passing through the outer cylinder is fixedly connected to a scraper bevel gear, and a side of each end face gear ring close to the outer cylinder is fixedly connected to a driving bevel gear ring capable of meshing with the scraper bevel gear.

[0024] By adopting the above technical solution, during the rotation of the motor, the motor drives the two end face gear rings to rotate, and the two end face gear rings drive the connected driving bevel gear rings to rotate. Each driving bevel gear ring drives the connected driven bevel gear to rotate during the rotation process, and the driven bevel gear drives the driving screw to rotate during the rotation process, thereby reducing the trouble of the staff needing to rotate the driving screw.

[0025] Optionally, a clamping pad is fixedly connected to one side of each clamping plate that is capable of abutting against the pipe.

[0026] By adopting the above technical solution and providing a clamping pad, the wear on the pipeline during the process of clamping the pipeline by the clamping plate can be reduced.

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

[0028] 1. By setting up multiple clamps to clamp the pipe, the trouble of workers having to adjust the butt angle between the pipe and the abutment ring multiple times is reduced;

[0029] 2. By setting up a screen, it is possible to reduce the occurrence of impurities contacting the fan or motor and thus affecting the rotation of the fan;

[0030] 3. By setting up the scraper assembly, it is possible to reduce the occurrence of impurities adhering to the screen, thereby affecting the flow of air through the outer cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0032] Figure 2 It is a cross-sectional view of the overall structure of an embodiment of the present application.

[0033] Figure 3 yes Figure 2 A partial enlarged schematic diagram of the structure A in the middle.

[0034] Figure 4 yes Figure 2 A partial enlarged schematic diagram of the structure B in the figure.

[0035] Figure 5 It is a schematic diagram showing the connection relationship between the scraper assembly and the barrier.

[0036] Explanation of the reference numerals in the accompanying drawings: 1. outer cylinder; 11. motor; 12. fan; 13. abutment ring; 14. vertical opening; 15. horizontal opening; 16. pressure spring; 2. splint; 21. slider; 22. clamping pad; 3. connecting assembly; 31. driving pulley; 32. driven pulley; 321. connecting belt; 33. driving bevel gear; 331. driven bevel gear; 34. driving gear; 35. end face gear ring; 351. connecting rod; 36. connecting gear; 37. driving screw; 38. screw connecting block; 4. blocking net; 41. railing; 5. scraper assembly; 51. scraper plate; 52. connecting block; 53. reciprocating screw; 54. scraper bevel gear; 55. driving bevel gear ring. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1 -Attached Figure 5 This application is described in further detail.

[0038] The embodiment of the present application discloses a fire-fighting fan device which is convenient for firefighting installation. Figure 1 and Figure 2 , comprising a horizontally arranged outer cylinder 1, a motor 11 is arranged in the middle of the outer cylinder 1, and the axis of the output shaft of the motor 11 coincides with the central axis of the outer cylinder 1. A fan 12 is fixedly connected to the output shaft of the motor 11 near one end of the outer cylinder 1.

[0039] An abutment ring 13 is provided inside the outer tube 1 at the side of the fan 12 away from the connected motor 11, and the outer ring wall of the abutment ring 13 is fixedly connected to the inner wall of the outer tube 1. A similar abutment ring 13 is provided inside the outer tube 1 at the side of the motor 11 away from the fan 12, and the outer ring wall of the abutment ring 13 is also fixedly connected to the inner wall of the outer tube 1.

[0040] A plurality of clamping plates 2 are connected to the side walls of the outer cylinder 1 on the opposite sides of the two abutment rings 13. In this embodiment, eight clamping plates 2 are provided, and the eight clamping plates 2 are divided into two groups and evenly arranged at both ends of the outer cylinder 1. The four clamping plates 2 connected to each end of the outer cylinder 1 are evenly distributed around the central axis of the adjacent outer cylinder 1, and the two groups of clamping plates 2 are arranged one by one.

[0041] A connecting assembly 3 is connected between each set of clamping plates 2 and the motor 11 , and the connecting assembly 3 can drive the clamping plates 2 to clamp the pipe on one side of the adjacent abutting ring 13 under the drive of the motor 11 .

[0042] When it is necessary to connect the pipeline to the fire-fighting fan, the pipeline is inserted from both ends of the outer tube 1 into the inner part of the outer tube 1 and the pipeline is abutted against the side wall of the abutment ring 13. Then the motor 11 is started, and the motor 11 drives the multiple clamping plates 2 to abut against the pipeline through the connection assembly 3, thereby realizing the clamping process of the pipeline, and then the pipeline and the abutment ring 13 are connected by bolts to realize the connection between the pipeline and the fire-fighting fan.

[0043] The motor 11 and the connecting assembly 3 drive the clamp 2 to perform preliminary positioning of the pipeline, and then the pipeline and the abutment ring 13 are connected by bolts, which facilitates the process of positioning the pipeline and limiting the pipeline position, and facilitates the subsequent process of the staff connecting the pipeline and the abutment ring 13 by bolts, and also makes the connection between the pipeline and the fire fan more stable.

[0044] Reference Figure 2 , Figure 3 and Figure 4 The connecting assembly 3 includes a driving pulley 31 fixedly sleeved on the output shaft of the motor 11, and a driven pulley 32 corresponding to the driving pulley 31 is provided on the outer side of the outer cylinder 1. A connecting belt 321 that runs through the side wall of the outer cylinder 1 is connected between the driven pulley 32 and the driving pulley 31.

[0045] One side of the driven pulley 32 is fixedly connected to a driving bevel gear 33, one side of the driving bevel gear 33 is meshed with a driven bevel gear 331, and the driven bevel gear 331 is fixedly connected to a driving gear 34. Both sides of the driving gear 34 near the two ends of the outer cylinder 1 are meshed with end face gear rings 35, and each end face gear ring 35 is rotatably connected to the outer wall of the outer cylinder 1 through a plurality of connecting rods 351.

[0046] Each end face gear ring 35 is meshed with four connecting gears 36 on one side away from the meshed driving gear 34. The four connecting gears 36 are arranged one by one corresponding to the four adjacent clamping plates 2. The lower side of each connecting gear 36 is fixedly connected with a driving screw 37. Each driving screw 37 is arranged along the radial direction of the outer tube 1. The lower side of each driving screw 37 is threadedly inserted with a screw connecting block 38.

[0047] Each clamping plate 2 is fixedly connected to a slider 21 on one side close to the adjacent screw connecting block 38. The cross section of each slider 21 is set to be rectangular, and the cross section of each clamping plate 2 is set to be rectangular, and the cross section size of each slider 21 is smaller than the cross section size of the connected clamping plate 2. The vertical cross section of each slider 21 is set to be one of T-shaped or dovetail-shaped. In this embodiment, the vertical cross section of the slider 21 is set to be T-shaped. The lower end of each screw connecting block 38 is slidably sleeved to the upper side of the adjacent slider 21 so that the slider 21 can move in a direction parallel to the center line of the outer cylinder 1 to abut against the adjacent abutment ring 13.

[0048] The hole wall where each screw link 38 connects to the driving screw 37 is arranged as a light hole at one end away from the connected slider 21, so that when the driving screw 37 drives the clamping plate 2 to the inside of the outer tube 1 through the screw link 38 and the slider 21, and makes the side wall of the clamping plate 2 close to the slider 21 slide and abut against the inner wall of the outer tube 1, the driving screw 37 is no longer threadedly connected to the screw link 38.

[0049] A vertical opening 14 is provided on the side wall of the outer tube 1 near each clamping plate 2 for the clamping plate 2 to be inserted into the inner part of the outer tube 1 along the radial direction of the outer tube 1. Each clamping plate 2 is located inside the vertical opening 14 and is slidably abutted against the inner wall of the vertical opening 14. A horizontal opening 15 is provided on the side of each vertical opening 14 near the adjacent abutting ring 13 for the slider 21 to move toward the side close to the abutting ring 13, and each horizontal opening 15 is connected to the adjacent vertical opening 14. A pressure spring 16 is provided inside the side wall of the outer tube 1 on the side of each horizontal opening 15 away from the connected vertical opening 14. Each pressure spring 16 can abut against the slider 21 and drive the slider 21 to move toward the side close to the adjacent abutting ring 13.

[0050] During the rotation of the motor 11, the motor 11 drives the driving pulley 31 to rotate. During the rotation of the driving pulley 31, the connecting belt 321 and the driven pulley 32 are driven to rotate. During the rotation of the driven pulley 32, the connected driving bevel gear 33 is driven to rotate. During the rotation of the driving bevel gear 33, the meshing driven bevel gear 33 is driven to rotate. During the rotation of the driven bevel gear 331, the connected driving gear 34 is driven to rotate. During the rotation of the driving gear 34, the two meshing end gear rings 35 are driven to rotate.

[0051] During the rotation, each end face gear ring 35 drives the meshing multiple connecting gears 36 to rotate, and each connecting gear 36 drives the connected driving screw 37 to rotate, and each driving screw 37 drives the connected screw connecting block 38, slider 21 and clamping plate 2 to move toward the direction close to the pipeline, so that the multiple clamping plates 2 connected to the end of the outer tube 1 can drive the pipeline to move to the middle position inside the outer tube 1, thereby adjusting the position of the pipeline and clamping the pipeline.

[0052] Driven by the pressure spring 16 , the slider 21 and the clamping plate 2 move toward the side close to the adjacent abutment ring 13 , thereby driving the pipeline to abut against the abutment ring 13 , thereby realizing the connection process between the pipeline and the fan.

[0053] Reference Figure 2 , Figure 4 and Figure 5 A barrier net 4 is arranged inside each abutting ring 13 , and the barrier net 4 is composed of a plurality of vertically arranged railings 41 .

[0054] By providing the blocking net 4, the blocking net 4 can block the impurities inside the pipeline that are blown toward the fan at the side of the blocking net 4 away from the fan 12, so that the fan 12 can operate stably.

[0055] Each screen 4 is connected to a scraper assembly 5 , and the scraper assembly 5 is used to scrape impurities on the screen 4 .

[0056] By providing the scraper assembly 5, the scraper assembly 5 can scrape off the impurities attached to the blocking net 4, thereby reducing the phenomenon that the impurities adhere to the blocking net 4 and block the air flow.

[0057] The scraper assembly 5 includes a scraper plate 51 disposed between every two adjacent railings 41. The scraper plates 51 in the same group are fixedly connected to the same connection block 52 on the side close to the fan 12. Each connection block 52 is penetrated in the vertical direction and is threadedly connected to a reciprocating screw 53. One end of each reciprocating screw 53 penetrates the side wall of the outer cylinder 1 and is rotatably connected to the outer cylinder 1. One end of each reciprocating screw 53 that penetrates the side wall of the outer cylinder 1 is fixedly connected to a scraper bevel gear 54. Each end face gear ring 35 is fixedly connected to a driving bevel gear ring 55 that can mesh with the adjacent scraper bevel gear 54 on the side close to the adjacent scraper bevel gear 54.

[0058] During actual use, when the motor 11 rotates to drive the two end face gear rings 35 to rotate, each end face gear ring 35 drives the connected driving bevel gear ring 55 to rotate, and each driving bevel gear ring 55 drives the meshing scraper bevel gear 54 to rotate during the rotation process. Each scraper bevel gear 54 drives the connected reciprocating screw 53 to rotate during the rotation process. Each reciprocating screw 53 drives the connected connecting block 52 to move up and down during the rotation process. Each connecting block 52 drives the connected multiple scraper plates 51 to move up and down during the movement process, thereby realizing the process of scraping impurities attached to the multiple scraper plates 51 through the multiple scraper plates 51.

[0059] A clamping pad 22 is fixedly connected to one side of each clamping plate 2 close to the adjacent abutting ring 13 , and the clamping pad 22 is made of a flexible material such as rubber, foam or the like.

[0060] By providing the clamping pad 22, the clamping pad 22 can abut against the pipe during the process of the clamping plate 2 clamping the pipe, so that the clamping pad 22 is deformed during the contact with the pipe, so that the clamping plate 2 clamps the pipe more stably.

[0061] The implementation principle of a fire-fighting fan device that is easy to install in an embodiment of the present application is: the pipes that need to be connected to the fan are inserted into the inner part of the outer tube 1 from both ends of the outer tube 1, and the ends of each pipe are abutted against the abutment ring 13.

[0062] Then start the fan, which drives the multiple clamps 2 located at the end of the outer tube 1 to move, so that the clamps 2 can abut the pipe between the clamps 2 and the adjacent abutment rings 13, thereby realizing the initial clamping process of the pipe, and then further connect the pipe and the abutment ring 13 through bolts to realize the full connection process of the pipe and the fan.

[0063] Afterwards, when the motor 11 drives the fan 12 to rotate, the motor 11 continues to drive the two reciprocating screws 53 to rotate. During the rotation process, the two reciprocating screws 53 drive the connected multiple scraper plates 51 to scrape off the impurities attached to the screen 4, so that the fan can operate normally.

[0064] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fire-fighting fan device that is convenient for installation, characterized in that: The invention comprises an outer cylinder (1), wherein a motor (11) is arranged inside the outer cylinder (1), the output shaft of the motor (11) is fixedly connected to a fan (12), the inner side of the outer cylinder (1) is fixedly connected to abutment rings (13) at both ends close to the outer cylinder (1), and the two ends of the outer cylinder (1) are slidably connected to a plurality of clamping plates (2), and the plurality of clamping plates (2) can clamp the ends of the pipes placed inside the outer cylinder (1) and abutting against the abutment rings (13); a connecting assembly (3) is connected between the plurality of clamping plates (2) and the output shaft of the motor (11), and the connecting assembly (3) can drive the plurality of clamping plates (2) to clamp the pipes at both ends of the outer cylinder (1) under the drive of the motor (11); The connecting assembly (3) comprises a driving bevel gear (33) connected to the output shaft of the motor (11) and driven by the output shaft of the motor (11); the driving bevel gear (33) is meshed with a driven bevel gear (331); one side of the driven bevel gear (331) is fixedly connected with a driving gear (34); the driving gear (34) is meshed with an end face gear ring (35) at a position close to each end of the outer cylinder (1); each end face gear ring (35) is meshed with a side close to an adjacent end of the outer cylinder (1) There are a plurality of connecting gears (36), and the plurality of connecting gears (36) are arranged one by one corresponding to the plurality of clamping plates (2). A driving screw (37) is fixedly connected to the side of each connecting gear (36) close to the corresponding clamping plate (2), and a screw connecting block (38) is threadedly inserted into the side of each driving screw (37) close to the adjacent clamping plate (2). Each screw connecting block (38) is connected to the adjacent clamping plate (2), and each clamping plate (2) is inserted into the interior of the outer cylinder (1) by sliding along the radial direction of the outer cylinder (1); A slider (21) is fixedly connected to one side of the clamping plate (2) close to the lead screw connecting block (38); the cross section of the slider (21) is set to be rectangular and smaller than the cross section of the clamping plate (2); the slider (21) is slidably connected to the lead screw connecting block (38) along the length direction of the outer cylinder (1); a vertical opening (14) is provided on the side wall of the outer cylinder (1) close to each clamping plate (2) for the clamping plate (2) to be inserted into the inner part of the outer cylinder (1) along the radial direction of the outer cylinder (1); The cylinder (1) is provided with a transverse opening (15) for the slider (21) to slide along the length direction of the outer cylinder (1); the transverse opening (15) is located on a side of the vertical opening (14) close to an adjacent abutment ring (13); the transverse opening (15) is communicated with the adjacent vertical opening (14); and a pressure spring (16) capable of driving the slider (21) to move in a direction close to the adjacent abutment ring (13) is connected to a side of the side wall of the outer cylinder (1) close to each slider (21).

2. A fire-fighting fan device that is convenient to install for fire fighting according to claim 1, characterized in that: The interior of each abutment ring (13) is fixedly connected to a barrier net (4).

3. A fire-fighting fan device that is convenient to install for fire fighting according to claim 2, characterized in that: Each of the blocking nets (4) is connected to a scraping assembly (5) capable of scraping impurities in the gaps of the blocking nets (4).

4. A fire-fighting fan device that is convenient to install for fire fighting according to claim 3, characterized in that: The barrier net (4) is composed of a plurality of railings (41) arranged at intervals from each other, and the scraper assembly (5) comprises a scraper plate (51) located between two adjacent railings (41). The plurality of scraper plates (51) connected to the same barrier net (4) are connected to the same connecting block (52), and the connecting block (52) can drive the plurality of scraper plates (51) to move along the length direction of the adjacent railings (41).

5. A fire-fighting fan device that is convenient to install for fire fighting according to claim 4, characterized in that: Each of the connecting blocks (52) is penetrated by and threadedly connected with a reciprocating screw (53), each of the reciprocating screws (53) is arranged in parallel with the adjacent railing (41), and one end of each of the reciprocating screws (53) penetrates the adjacent outer cylinder (1) and is rotatably connected to the outer cylinder (1).

6. A fire-fighting fan device that is convenient to install for fire fighting according to claim 5, characterized in that: One end of each reciprocating screw (53) passing through the outer cylinder (1) is fixedly connected to a scraper bevel gear (54), and the side of each end face gear ring (35) close to the outer cylinder (1) is fixedly connected to a driving bevel gear ring (55) capable of meshing with the scraper bevel gear (54).

7. The fire-fighting fan device conveniently installed for fire fighting according to claim 1, characterized in that: A clamping pad (22) is fixedly connected to one side of each clamping plate (2) that is capable of abutting against the pipeline.

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