Building fire-fighting fan protection mounting structure

Abstract

The building fire-fighting fan protection mounting structure is applied to the technical field of mechanical pumps, the mounting piece is arranged, two first fixing blocks are close to each other and clamped on the outer side of a fire-fighting fan, primary fixing is achieved, a mounting ring is clamped between a second fixing block and a fixing ring, complete fixing is achieved, and the mounting piece is fixed to the outer side of the fire-fighting fan. The protection net is installed on the fire-fighting fan more stably, the protection net protects an air outlet of the fire-fighting fan and prevents rats, garbage, impurities and the like from entering the fan, by arranging the automatic opening piece, when a fire occurs, wind power generated when the fan is started can relieve fixation of the protection net, automatic opening of the protection net is achieved, and the safety of the fire-fighting fan is improved. According to the fire-fighting fan, the smoke exhaust resistance of the fire-fighting fan is smaller, the smoke exhaust effect is better, by arranging the movable connecting column, locking between the automatic opening piece and the protective net can be automatically relieved when the automatic opening piece is clamped, and therefore the protective net can still be opened under the condition that the automatic opening piece is clamped, and it can be guaranteed that smoke is exhausted smoothly and unobstructed all the time.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical pumps, and in particular to a protective installation structure for a fire-fighting fan in a building. Background Art

[0002] A fire fan is a ventilation device used for ventilation and smoke exhaust when a fire occurs. Its main function is to force air flow, thereby achieving ventilation and smoke exhaust. A fire fan is usually driven by an electric motor. When the power supply system fails, the equipped engine can automatically start in a short time and continue to drive the fan to work, thereby ensuring the normal operation of the mechanical smoke prevention and exhaust system.

[0003] In modern buildings, fire fans are essential firefighting equipment. Since fire fans are usually installed on the roof or outdoor platform, the air outlet of the fire fan is often directly connected to the outdoor environment. The outdoor environment is relatively complex, and garbage and other impurities are often blown into the fan, thus affecting the normal operation of the fire fan. Even mice will drill into the fire fan and gnaw the internal wiring of the fire fan, causing damage to the fire fan. In the prior art, a relatively sparse wire mesh is usually used to seal the outlet of the fire fan. Although this can keep large pieces of garbage out, it is still difficult to blow the fire fan out. It can block them outside and does not affect smoke exhaust, but some smaller garbage and rats cannot be blocked, and the fire fan is often damaged. Once a fire occurs during the period of fire fan damage, the consequences are disastrous. When a denser wire mesh is used to seal the outlet of the fire fan, although smaller garbage and rats can be blocked, in the event of a fire, the denser wire mesh will increase the resistance during smoke exhaust and greatly reduce the smoke exhaust speed, which will increase the smoke concentration in the building, which is not conducive to people's escape and increases the safety risk of escapees.

[0004] For this reason, we propose a building fire-fighting fan protection installation structure to solve the above problems. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the purpose of the present application is to set up a denser protective net to protect the air outlet of the fire-fighting fan to prevent impurities such as rats and garbage from entering. When a fire occurs, the wind force of the fan and the heat of the smoke are used to automatically open the protective net to ensure that the smoke is discharged unimpeded. Compared with the prior art, a protective installation structure for a fire-fighting fan in a building is provided. By setting a mounting part, the protective net is installed on the fire-fighting fan. By setting an automatic opening part, the protective net is automatically opened in the event of a fire to ensure that the smoke is discharged unimpeded. By setting a movable connecting part, the protective net can still be opened even if the automatic opening part is stuck, so as to always ensure that the smoke can be discharged unimpeded.

[0007] 2. Technical solution

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions.

[0009] A fire-fighting fan protection installation structure for a building, comprising a fire-fighting fan, wherein one end of the fire-fighting fan close to an air outlet is fixedly connected with a mounting ring, a fixing ring is fitted on the outer side of the mounting ring, and both left and right ends of the fixing ring are provided with mounting parts;

[0010] The mounting member comprises an L-shaped plate, a limiting rod, a fixing block and a spring;

[0011] The L-shaped plate is fixedly connected to the fixing ring, one end of the limiting rod 1 passes through the L-shaped plate and is slidably connected to the L-shaped plate, the other end of the limiting rod 1 is fixedly connected to the fixing block 1, the spring is sleeved on the outside of the limiting rod 1, and the spring is fixedly connected between the L-shaped plate and the fixing block 1.

[0012] Further, the mounting member further comprises a first limiting block, a second limiting rod, a second fixing block, a threaded rod and a second limiting block;

[0013] The limit block 1 is fixedly connected to the fixed block 1, the limit rod 2 passes through the limit block 1 and is slidably connected to the limit block 1, the fixed block 2 is fixedly connected to the limit rod 2, the threaded rod is rotatably connected to the fixed block 2, and the limit block 2 is threadedly connected to the threaded rod.

[0014] Furthermore, one end of the limiting rod 1 away from the fixing block 1 is fixedly connected to a stopper, two limiting rods 1 and stoppers are arranged on the L-shaped plate, and a handle is fixedly connected between the two stoppers.

[0015] Furthermore, the fixing block 1 and the fixing block 2 are both fixedly connected with anti-skid pads, and the anti-skid pads are made of rubber anti-skid material.

[0016] Furthermore, one of the L-shaped plates is rotatably connected to a protective ring via hinge 1, a locking device is provided between the protective ring and the other L-shaped plate, the bottom of the protective ring is rotatably connected to a protective net via hinge 2, an automatic opening component is provided between the top of the protective net and the protective ring, an annular airbag is embedded and installed on the protective ring, and the annular airbag is in contact with the upper edge of the protective net.

[0017] Further, the automatic opening member includes a mounting frame, a baffle, a sliding frame, a locking block, a rotating rod, a wind-catching plate and a square air bag;

[0018] The mounting frame is fixedly connected to the inner wall of the protective ring, the baffle is fixedly connected to a side of the mounting frame close to the protective net, the sliding frame is slidably connected to the mounting frame, locking grooves are provided at both ends of the sliding frame, the locking block is slidably connected to the locking groove, the rotating rod is rotatably connected to the locking block, the locking block, the locking groove and the rotating rod are each provided with two and are symmetrically arranged with respect to the mounting frame, the two ends of the rotating rods that are close to each other are rotatably connected, and the two ends of the rotating rods that are close to each other are elastically connected by a torsion spring, the wind catcher is fixedly connected to one of the rotating rods, the square airbag is fixedly connected to both sides of the inner wall of the mounting frame, and the position of the square airbag corresponds to that of the locking block.

[0019] Furthermore, the wind-catching plate is arc-shaped, and an opening of the wind-catching plate faces the fire-fighting fan.

[0020] Furthermore, a mounting plate is fixedly connected to the protective net, a connecting column is arranged between the mounting plate and the sliding frame, a sliding groove 1 is provided on the mounting plate, a sliding groove 2 is provided on a side of the sliding frame close to the mounting plate, and both ends of the connecting column are slidably connected to the mounting plate and the sliding frame through sliding groove 1 and sliding groove 2 respectively.

[0021] Furthermore, a piston cylinder is fixedly connected to the mounting plate, and an output end of the piston cylinder is fixedly connected to a connecting column.

[0022] Compared with the prior art, the advantages of this application are:

[0023] (1) By setting the mounting parts, during installation, the handle is pulled to drive the fixing block 1 close to the L-shaped plate, so that the distance between the two fixing blocks 1 becomes larger, and then the fixing ring is fitted with the mounting ring of the fire-fighting fan. After that, the handle is released, and the two fixing blocks 1 are driven close to each other under the elastic force of the spring, and clamped on the outside of the fire-fighting fan to achieve preliminary fixation. Then, the threaded rod is rotated, and under the limiting action of the limiting rod 2, the fixing plate 2 moves toward the mounting ring, and the mounting ring is clamped between the fixing block 2 and the fixing ring to achieve complete fixation. By clamping and installing the fixing block 1 and the fixing block 2 from two directions, the protective net can be installed on the fire-fighting fan more stably. The protective net protects the air outlet of the fire-fighting fan, and can prevent mice and garbage impurities from entering the fan, thereby achieving a protective effect. In addition, the equipment can be installed on the existing fire-fighting fan through the mounting parts, and the fire-fighting fan does not need to be replaced, thereby making the device more adaptable.

[0024] (2) By setting an automatic opening part, when a fire occurs, the fire-fighting fan is started. Under the huge wind force of the fire-fighting fan, the wind catcher and the rotating rod are blown, causing the rotating rod to rotate, thereby pulling the locking blocks on both sides to move toward the inside of the sliding frame through the rotating rod. At the same time, the smoke heats the square airbag, causing the square airbag to expand and squeeze the locking block, so that the locking block can be more quickly retracted into the sliding frame, so that the locking block and the baffle lose their restrictive effect. At this time, the sliding frame and the mounting frame also lose their restrictive effect. Under the elastic action of the expanded annular airbag, the protective net is ejected, causing the protective net to automatically rotate and open, thereby reducing the resistance of the fire-fighting fan to exhaust smoke, making it smoother and achieving a better smoke exhaust effect.

[0025] (3) The piston cylinder is arranged to drive the connecting column to move upward. Since the occurrence of fire is highly accidental, when a fire occurs, if the parts in the automatic opening part are blocked by impurities or are aged and cannot move or rotate, the protective net cannot be rotated and opened. However, the temperature of the smoke continuously discharged at this time is relatively high, which can heat the piston cylinder. The heated output end of the piston cylinder extends, driving the connecting column to slide upward in the first and second slide grooves until the connecting column and the second slide groove are no longer constrained. At this time, the connecting column is separated from the sliding frame, and the protective net can be driven to pop out under the elastic action of the annular airbag, so that the protective net can still be opened when the automatic opening part is stuck, thereby ensuring smooth and unimpeded discharge of smoke.

[0026] (4) By arranging anti-skid pads made of rubber anti-skid material on the fixing block 1 and the fixing block 2, the friction between the fixing block 1 and the fixing block 2 and the fire-fighting fan can be increased, thereby improving the stability of the installation.

[0027] (5) By providing a handle, the fixed block can be pulled apart to facilitate disassembly and assembly.

[0028] (6) By arranging a torsion spring between the two rotating rods, the elastic force of the torsion spring can keep the rotating rod in a straight line and push the locking block out, so that the protective net and the protective ring can fit tightly.

[0029] (7) By providing an arc-shaped wind-catching plate, the arc shape can increase the area of ​​the wind-catching plate, so that the fire-fighting fan exerts a greater force on the wind-catching plate when it is working, making it easier for the rotating rod to rotate.

[0030] (8) By providing a square airbag, the square airbag expands when heated and squeezes the locking block, which can accelerate the contraction of the locking block, thereby enabling the protective net to be opened more quickly.

[0031] (9) By providing an annular airbag, smoke can heat the annular airbag, causing it to expand, thereby squeezing the upper edge of the protective net. When the locking block loses its restriction, the expanded annular airbag can pop out the protective net, allowing the protective net to open quickly.

[0032] (10) By providing a locking device, the protective net can be opened horizontally, which is convenient for daily inspection and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overall structure of the front side of this application;

[0034] Figure 2 This is a schematic diagram of the overall structure on the back of this application;

[0035] Figure 3 For this application Figure 2 A partial enlarged view of the structure at A;

[0036] Figure 4 Open the status structure diagram for daily maintenance of this application;

[0037] Figure 5 This is a schematic diagram of the structure in the open state during fire for this application;

[0038] Figure 6 For this application Figure 5 A local enlarged view of the structure at B in FIG.

[0039] Figure 7 This is a schematic diagram of the automatic opening structure of this application;

[0040] Figure 8 This is a partial cross-sectional structural schematic diagram of the automatic opening member of the present application;

[0041] Fig. 9 This is a schematic diagram of the mounting plate and piston cylinder structure of the present application.

[0042] Description of the numbers in the figure:

[0043] 1. Fire fan; 2. Mounting ring; 3. Fixing ring; 4. Mounting parts; 401. L-shaped plate; 402. Limit rod 1; 403. Fixing block 1; 404. Spring; 405. Limiting block 1; 406. Limit rod 2; 407. Fixing block 2; 408. Threaded rod; 409. Limiting block 2; 410. Handle; 411. Anti-skid pad; 5. Hinge 1; 6. Protective ring; 7. Locking device; 8. Protective net; 9. Automatic opening part; 901. Mounting frame; 902. Baffle; 903. Sliding frame; 904. Locking block; 905. Rotating rod; 906. Wind catcher; 907. Square airbag; 10. Mounting plate; 11. Connecting column; 12. Hinge 2; 13. Annular airbag; 14. Slide 1; 15. Slide 2; 16. Piston cylinder. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0045] Embodiment 1:

[0046] The present invention provides a building fire fan protection installation structure, please refer to Figure 1-9 , including a fire-fighting fan 1, one end of the fire-fighting fan 1 close to the air outlet is fixedly connected with a mounting ring 2, a fixing ring 3 is fitted and installed on the outer side of the mounting ring 2, and mounting parts 4 are arranged on both ends of the left and right ends of the fixing ring 3, and the mounting parts 4 include an L-shaped plate 401, a limiting rod 402, a fixing block 403 and a spring 404, the L-shaped plate 401 is fixedly connected to the fixing ring 3, one end of the limiting rod 402 passes through the L-shaped plate 401 and is slidably connected to the L-shaped plate 401, the other end of the limiting rod 402 is fixedly connected to the fixing block 403, and the end of the limiting rod 402 away from the fixing block 403 is fixedly connected with a stopper, two limiting rods 402 and stops are arranged on the L-shaped plate 401, and a handle 410 is fixedly connected between the two stops, and the handle 410 can pull the fixing block 403 apart for easy disassembly and assembly, and the spring 404 is sleeved on the limiting rod 402. On the outside, the spring 404 is fixedly connected between the L-shaped plate 401 and the fixed block 1 403. The mounting member 4 also includes a limit block 1 405, a limit rod 2 406, a fixed block 2 407, a threaded rod 408 and a limit block 2 409. The limit block 1 405 is fixedly connected to the fixed block 1 403. The limit rod 2 406 penetrates the limit block 1 405 and is slidably connected to the limit block 1 405. The fixed block 2 407 is fixedly connected to the limit rod 2 406. The fixed block 1 403 and the fixed block 2 407 are both fixedly connected with an anti-skid pad 411. The anti-skid pad 411 is made of rubber anti-skid material. The anti-skid pad 411 can increase the friction between the fixed block 1 403 and the fixed block 2 407 and the fire-fighting fan 1, thereby improving the stability of the installation. The threaded rod 408 is rotatably connected to the fixed block 2 407, and the limit block 2 409 is threadedly connected to the threaded rod 408.

[0047] Specifically, during installation, the handle 410 is pulled to drive the fixing block 1 403 close to the L-shaped plate 401, so that the distance between the two fixing blocks 1 403 becomes larger, and then the fixing ring 3 is fitted with the mounting ring 2 of the fire-fighting fan 1, and then the handle 410 is released, and the two fixing blocks 1 403 are driven close to each other under the elastic force of the spring 404, and clamped on the outside of the fire-fighting fan 1 to achieve preliminary fixation, and then the threaded rod 408 is rotated, and under the limiting action of the limiting rod 2 406, the fixing block 2 407 moves toward the mounting ring 2, and the mounting ring 2 is clamped between the fixing block 2 407 and the fixing ring 3 to achieve complete fixation. By clamping and installing the fixing block 1 403 and the fixing block 2 407 from two directions, the protective net 8 can be more stably installed on the fire-fighting fan 1, and the equipment can be installed on the existing fire-fighting fan 1 through the mounting part 4, and the fire-fighting fan 1 does not need to be replaced, thereby making the device more adaptable.

[0048] One of the L-shaped plates 401 is rotatably connected to a protective ring 6 via a hinge 1 5, a locking device 7 is provided between the protective ring 6 and the other L-shaped plate 401, the locking device 7 can horizontally open the protective net, which is convenient for daily inspection and maintenance, the bottom of the protective ring 6 is rotatably connected to a protective net 8 via a hinge 2 12, an automatic opening member 9 is provided between the top of the protective net 8 and the protective ring 6, an annular airbag 13 is inlaid and installed on the protective ring 6, the annular airbag 13 is fitted with the upper edge of the protective net 8, the smoke can heat the annular airbag 13, so that the annular airbag 13 is opened. The airbag 13 expands, thereby squeezing the upper edge of the protective net 8. When the locking block 904 loses its restriction, the expanded annular airbag 13 can pop out the protective net 8. The automatic opening member 9 includes a mounting frame 901, a baffle 902, a sliding frame 903, a locking block 904, a rotating rod 905, a wind-catching plate 906 and a square airbag 907. The mounting frame 901 is fixedly connected to the inner wall of the protective ring 6, the baffle 902 is fixedly connected to the side of the mounting frame 901 close to the protective net 8, the sliding frame 903 is slidably connected to the mounting frame 901, and both ends of the sliding frame 903 are open. A locking groove is provided, and a locking block 904 is slidably connected to the locking groove, and a rotating rod 905 is rotatably connected to the locking block 904. The locking block 904, the locking groove and the rotating rod 905 are each provided with two and are symmetrically arranged with respect to the mounting frame 901. The ends of the two rotating rods 905 that are close to each other are rotatably connected, and the ends of the two rotating rods 905 that are close to each other are elastically connected by a torsion spring. The elastic force of the torsion spring can keep the rotating rod 905 in a straight line state, and push the locking block 904 out, so that the protective net 8 can fit closely with the protective ring 6. The wind-catching plate 906 is fixedly connected to one of the rotating rods 905, so that the wind-catching plate 906 can be fixedly connected to the wind-catching plate 906. Plate 906 is arc-shaped, and the opening of wind-catching plate 906 faces the fire-fighting fan 1. The arc shape can increase the area of ​​wind-catching plate 906, so that the fire-fighting fan 1 exerts a greater force on wind-catching plate 906 when blowing, making it easier for the rotating rod 905 to rotate. The square airbag 907 is fixedly connected to both sides of the inner wall of the mounting frame 901. The position of the square airbag 907 corresponds to that of the locking block 904. The square airbag 907 expands due to heat and squeezes the locking block 904, which can accelerate the contraction of the locking block 904, thereby enabling the protective net 8 to be opened more quickly.

[0049] Specifically, when a fire occurs, the fire-fighting fan 1 is started, and the huge wind force of the fire-fighting fan 1 blows the wind-catching plate 906 and the rotating rod 905, causing the rotating rod 905 to rotate, thereby pulling the locking blocks 904 on both sides to move toward the inside of the sliding frame 903 through the rotating rod 905. At the same time, the smoke heats the square airbag 907, causing the square airbag 907 to expand and squeeze the locking block 904, so that the locking block 904 can be more quickly retracted into the sliding frame 903, so that the locking block 904 and the baffle 902 lose their restrictive effect, and the sliding frame 903 and the mounting frame 901 also lose their restrictive effect. Under the elastic action of the expanded annular airbag 13, the protective net 8 is ejected, so that the protective net 8 automatically rotates and opens, thereby making the fire-fighting fan 1 have smaller resistance to smoke exhaust, smoother, and better smoke exhaust effect.

[0050] A mounting plate 10 is fixedly connected to the protective net 8, a connecting column 11 is arranged between the mounting plate 10 and the sliding frame 90, a slide groove 14 is provided on the mounting plate 10, a slide groove 2 15 is provided on the side of the sliding frame 903 close to the mounting plate 10, both ends of the connecting column 11 are slidingly connected to the mounting plate 10 and the sliding frame 903 through the slide groove 14 and the slide groove 2 15 respectively, the slide groove 14 and the slide groove 2 15 have the same shape, and a larger circular space is provided at the upper end to facilitate the installation and separation of the connecting column 11, a piston cylinder 16 is fixedly connected to the mounting plate 10, and the output end of the piston cylinder 16 is fixedly connected to the connecting column 11, the piston cylinder 16 can be heated when the smoke is discharged, and the piston cylinder 16 is sealed and filled with inert gas.

[0051] Specifically, since the occurrence of fire is very accidental, when a fire occurs, if the parts in the automatic opening part 9 are blocked by impurities or aged and cannot be moved or rotated, the protective net 8 cannot be rotated and opened. However, the temperature of the smoke continuously discharged at this time is relatively high, which can heat the piston cylinder 16. The output end of the heated piston cylinder 16 extends, driving the connecting column 11 to slide upward in the slide groove 14 and the slide groove 2 15 until the connecting column 11 and the slide groove 2 15 are no longer constrained and detach from the slide groove 2 15. At this time, the connecting column 11 is separated from the sliding frame 903, and the elastic action of the annular airbag 13 can drive the protective net 8 to pop out, so that the protective net 8 can still be opened when the automatic opening part 9 is stuck, and the unimpeded discharge of smoke can always be guaranteed.

[0052] Working principle: Select equipment that matches the specifications of the fan. During installation, pull the handle 410 to drive the fixing block 1 403 close to the L-shaped plate 401, so that the distance between the two fixing blocks 1 403 becomes larger, and then fit the fixing ring 3 with the installation ring 2 of the fire fan 1. Then release the handle 410, and drive the two fixing blocks 1 403 close to each other under the elastic force of the spring 404, clamp them on the outside of the fire fan 1, and achieve preliminary fixation. Then rotate the threaded rod 408, and under the limiting action of the limiting rod 2 406, the fixing block 2 407 moves toward the installation ring 2 , clamp the mounting ring 2 between the fixing block 2 407 and the fixing ring 3 to achieve complete fixation. By clamping and installing the fixing block 1 403 and the fixing block 2 407 from two directions, the protective net 8 can be more stably installed on the fire-fighting fan 1. The protective net 8 protects the air outlet of the fire-fighting fan 1, which can prevent mice and garbage impurities from entering the fan, thereby achieving a protective effect. In addition, the device can be installed on the existing fire-fighting fan 1 through the mounting member 4, and the fire-fighting fan 1 does not need to be replaced, thereby making the device more adaptable.

[0053] During routine maintenance, the locking device can be opened to open the protective net horizontally, which is convenient for daily inspection and maintenance (the locking device is a prior art and will not be elaborated in detail here);

[0054] When a fire occurs, the fire-fighting fan 1 is started. Under the huge wind force of the fire-fighting fan 1, the wind-catching plate 906 and the rotating rod 905 are blown, so that the rotating rod 905 rotates, thereby pulling the locking blocks 904 on both sides to move into the sliding frame 903 through the rotating rod 905. At the same time, the smoke heats the square airbag 907, so that the square airbag 907 expands and squeezes the locking block 904, so that the locking block 904 can be more quickly retracted into the sliding frame 903, so that the locking block 904 and the baffle 902 lose their restrictive effect, and the sliding frame 903 and the mounting frame 901 also lose their restrictive effect. Under the elastic action of the expanded annular airbag 13, the protective net 8 is ejected, so that the protective net 8 automatically rotates and opens, so that the fire-fighting fan 1 has less resistance to smoke exhaust, smoother, and better smoke exhaust effect;

[0055] If the parts in the automatic opening part 9 are blocked by impurities or are aged and cannot move or rotate, the protective net 8 cannot be rotated and opened. However, the temperature of the smoke continuously discharged at this time is high, which can heat the piston cylinder 16. The output end of the heated piston cylinder 16 extends, driving the connecting column 11 to slide upward in the slide groove 14 and the slide groove 2 15 until the connecting column 11 and the slide groove 2 15 are no longer constrained and detach from the slide groove 2 15. At this time, the connecting column 11 is separated from the sliding frame 903, and the elastic action of the annular airbag 13 can drive the protective net 8 to pop out, so that the protective net 8 can still be opened when the automatic opening part 9 is stuck, and the unimpeded discharge of smoke can always be guaranteed.

[0056] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and its improved conception, which should be covered by the protection scope of the present application.

Claims

1. A fire-fighting fan protection installation structure for a building, comprising a fire-fighting fan (1), wherein one end of the fire-fighting fan (1) close to the air outlet is fixedly connected to a mounting ring (2), characterized in that: A fixing ring (3) is fitted on the outer side of the mounting ring (2), and mounting parts (4) are provided on both left and right ends of the fixing ring (3); The mounting member (4) comprises an L-shaped plate (401), a limiting rod (402), a fixing block (403) and a spring (404); The L-shaped plate (401) is fixedly connected to the fixing ring (3); one end of the limiting rod (402) passes through the L-shaped plate (401) and is slidably connected to the L-shaped plate (401); the other end of the limiting rod (402) is fixedly connected to the fixing block (403); the spring (404) is sleeved on the outside of the limiting rod (402), and the spring (404) is fixedly connected between the L-shaped plate (401) and the fixing block (403).

2. A fire-fighting fan protection installation structure for a building according to claim 1, characterized in that: The mounting member (4) further comprises a first limiting block (405), a second limiting rod (406), a second fixing block (407), a threaded rod (408) and a second limiting block (409); The limit block 1 (405) is fixedly connected to the fixed block 1 (403), the limit rod 2 (406) passes through the limit block 1 (405) and is slidably connected to the limit block 1 (405), the fixed block 2 (407) is fixedly connected to the limit rod 2 (406), the threaded rod (408) is rotatably connected to the fixed block 2 (407), and the limit block 2 (409) is threadedly connected to the threaded rod (408).

3. A fire-fighting fan protection installation structure for a building according to claim 1, characterized in that: One end of the limiting rod 1 (402) away from the fixing block 1 (403) is fixedly connected to a stopper, two limiting rods 1 (402) and stoppers are arranged on the L-shaped plate (401), and a handle (410) is fixedly connected between the two stoppers.

4. A fire-fighting fan protection installation structure for a building according to claim 2, characterized in that: The fixing block 1 (403) and the fixing block 2 (407) are both fixedly connected with an anti-skid pad (411), and the anti-skid pad (411) is made of rubber anti-skid material.

5. A fire-fighting fan protection installation structure for a building according to claim 1, characterized in that: One of the L-shaped plates (401) is rotatably connected to a protective ring (6) via hinge 1 (5), a locking device (7) is provided between the protective ring (6) and the other L-shaped plate (401), the bottom of the protective ring (6) is rotatably connected to a protective net (8) via hinge 2 (12), an automatic opening member (9) is provided between the top of the protective net (8) and the protective ring (6), an annular airbag (13) is embedded and installed on the upper part of the protective ring (6), and the annular airbag (13) is in contact with the upper edge of the protective net (8).

6. A fire-fighting fan protection installation structure for a building according to claim 5, characterized in that: The automatic opening member (9) comprises a mounting frame (901), a baffle (902), a sliding frame (903), a locking block (904), a rotating rod (905), a wind-catching plate (906) and a square air bag (907); The installation frame (901) is fixedly connected to the inner wall of the protective ring (6), the baffle (902) is fixedly connected to the side of the installation frame (901) close to the protective net (8), the sliding frame (903) is slidably connected to the installation frame (901), both ends of the sliding frame (903) are provided with locking grooves, the locking block (904) is slidably connected to the locking groove, the rotating rod (905) is rotatably connected to the locking block (904), the locking block (904), the locking groove and the rotating rod (905) are provided with two and are symmetrically arranged with respect to the installation frame (901), the ends of the two rotating rods (905) close to each other are rotatably connected, and the ends of the two rotating rods (905) close to each other are elastically connected by a torsion spring, the wind-catching plate (906) is fixedly connected to one of the rotating rods (905), and the square airbag (907) is fixedly connected to both sides of the inner wall of the installation frame (901), and the position of the square airbag (907) corresponds to that of the locking block (904).

7. A fire-fighting fan protection installation structure for a building according to claim 6, characterized in that: The wind-catching plate (906) is arc-shaped, and the opening of the wind-catching plate (906) faces the fire-fighting fan (1).

8. A fire-fighting fan protection installation structure for a building according to claim 6, characterized in that: The protective net (8) is fixedly connected to a mounting plate (10), a connecting column (11) is arranged between the mounting plate (10) and the sliding frame (903), a sliding groove 1 (14) is provided on the mounting plate (10), a sliding groove 2 (15) is provided on a side of the sliding frame (903) close to the mounting plate (10), and two ends of the connecting column (11) are slidably connected to the mounting plate (10) and the sliding frame (903) through the sliding groove 1 (14) and the sliding groove 2 (15), respectively.

9. A fire-fighting fan protection installation structure for a building according to claim 8, characterized in that: A piston cylinder (16) is fixedly connected to the mounting plate (10), and an output end of the piston cylinder (16) is fixedly connected to a connecting column (11).

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