Building fire extinguishing system

Abstract

The utility model provides a building fire extinguishing system which comprises a fire extinguishing box fixed on the top wall of a building body, and a first driving mechanism, a second driving mechanism, an adjustable water mist spraying mechanism and an adjustable dry powder spraying mechanism are arranged in the fire extinguishing box. The first driving mechanism is fixedly connected with one end of the adjustable water mist spraying mechanism, the second driving mechanism is fixedly connected with one end of the adjustable dry powder spraying mechanism, and a smoke sensor, a temperature sensor and a controller are sequentially fixed to the outer side of the fire fighting box from top to bottom. The adjustable water mist spraying mechanism and the adjustable dry powder spraying mechanism are arranged, the adjustable dry powder spraying mechanism can rapidly control the fire behavior by adjusting the rotating angle and the spraying range, the adjustable water mist spraying mechanism continuously cools a fire source while the fire behavior is controlled, fire behavior reburning is prevented, and the fire extinguishing device has the advantages of being rapid in fire extinguishing, high in practicability and the like. And the use effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire fighting equipment technical field especially relates to building construction fire fighting system. BACKGROUND

[0002] At present, China's economy enters the period of rapid development, urbanization construction is accelerating, and urban construction is also in transition from scattered low-density to centralized high-density, and the high-rise buildings become the main symbol of the city. Residents live in high-rise towers, and enterprises move into skyscrapers. High-rise buildings effectively utilize space, but various communication lines, power and lighting lines, and various system lines in high-rise buildings are crisscrossed, resulting in a substantial increase in the probability of fire. When a fire occurs, people are not easy to escape.

[0003] The existing building fire is usually installed with a fire hydrant on the outside of the house. One end of the fire hydrant is connected to a water pipe, and a valve is provided on the surface of the water pipe. When a building catches fire, the user uses the fire hydrant and twists the valve to extinguish the fire. For some types of fire, such as electrical fire, oil fire or chemical fire, water cannot effectively extinguish the fire. In addition, in high-rise buildings, due to the influence of water pressure limitation and water pipe length, the water injection distance and force may not be enough to cover all the fire points, affecting the fire extinguishing efficiency. A small fire extinguisher is provided in a small number of fire hydrants, and a small fire extinguisher is used for fire extinguishing. The capacity of the small fire extinguisher is small, and the number of fire extinguishing agents is limited. When extinguishing the fire, the small fire extinguisher is often used in a horizontal injection mode. The injection distance and coverage range of the small fire extinguisher are limited, and the horizontal injection mode cannot reach the fire area far away from the injection point to some extent, thereby causing the fire extinguishing effect to be unsatisfactory, and the fire cannot be effectively controlled in time. It is inconvenient in actual use.

[0004] Therefore, it is necessary to provide a new building fire fighting system to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides a building fire fighting system.

[0006] The building fire fighting system provided by the utility model comprises a fire fighting box fixed on the top wall of a building body, a driving mechanism one, a driving mechanism two, an adjustable water mist spraying mechanism and an adjustable dry powder spraying mechanism are arranged in the fire fighting box, one end of the driving mechanism one is fixedly connected with the adjustable water mist spraying mechanism, and one end of the driving mechanism two is fixedly connected with the adjustable dry powder spraying mechanism.

[0007] The drive mechanism includes a water tank and a water pump. The water tank and the water pump are both fixed inside the fire box, and the water tank and the water pump are fixedly connected to one end of the adjustable water mist spraying mechanism through water pipes.

[0008] The second drive mechanism includes a dry powder box and a dry powder pump. Both the dry powder box and the dry powder pump are fixed inside the fire box, and the dry powder box and the dry powder pump are fixedly connected to one end of the adjustable dry powder spraying mechanism through a connecting pipe.

[0009] The fire box is equipped with a smoke sensor, a temperature sensor, and a controller, which are fixed to the outside of the box from top to bottom.

[0010] Preferably, a partition is fixed to the bottom wall of the fire box, which divides the interior of the fire box into cavity one and cavity two. A fixing plate is fixed to the inner side wall of the fire box. The drive mechanism one, drive mechanism two, adjustable water mist spraying mechanism and adjustable dry powder spraying mechanism are all fixed to the top of the fixing plate. The drive mechanism one and the adjustable water mist spraying mechanism are located inside cavity two, and the drive mechanism two and the adjustable dry powder spraying mechanism are located inside cavity one.

[0011] Preferably, the top of the fixing plate is fixed with a base one and a base two, the base one and the base two are respectively located in the cavity two and the cavity one, the water tank and the water pump are fixedly connected to the surface of the base one through water pipes, the dry powder tank and the dry powder pump are fixedly connected to the surface of the base two through connecting pipes, and the adjustable water mist spraying mechanism and the adjustable dry powder spraying mechanism are respectively fixed on the top of the base one and the base two.

[0012] Preferably, the adjustable water mist spraying mechanism includes a motor and several water mist spraying components. The several water mist spraying components are located opposite each other at the bottom of the motor. The motor is fixed to the top of the base. The rotor of the motor passes through the surface of the base and is fixedly connected to the top of the several water mist spraying components.

[0013] Preferably, the adjustable dry powder spraying mechanism includes a second motor and several dry powder spraying components. The several dry powder spraying components are located opposite each other at the bottom of the second motor. The second motor is fixed to the top of the second base. The rotor of the second motor passes through the surface of the second base and is fixedly connected to the top of the several dry powder spraying components.

[0014] Preferably, the water mist spraying assembly includes a rotating rod and several nozzles fixed to the bottom of the rotating rod. The rotating rod has several equally spaced grooves on its surface ring. Several sliders and slide plates slide on the inner sidewalls of the grooves. The tops of the sliders are fixedly connected to the bottoms of the slide plates. Several branch pipes are also fixed to the tops of the sliders, and the other ends of the branch pipes pass through the surface of the slide plates and are fixedly connected to the surface of the water pipes. A hydraulic rod is also fixed to the bottom wall of the fire box. The hydraulic rod is located inside the cavity two. The output end of the hydraulic rod is fixedly connected to the bottom of the slide plates. Several equally spaced fixing blocks are fixed to the surface ring of the rotating rod. The surfaces of the fixing blocks are all provided with rotating components.

[0015] Preferably, each of the rotating components includes two opposing connecting rods and a rotating plate. One end of the two connecting rods rotates on the left and right sides of the fixed block via a rotating column. The other end of the two connecting rods is rotatably connected to one end of the rotating plate via a rotating shaft. The other end of the rotating plate rotates via a limiting block, and the rotating plate slides on the bottom wall of the slide groove via the limiting block.

[0016] Preferably, several nozzles are fixedly mounted on the surfaces of several rotating plates, each nozzle has a spray hole on its surface, one side of each nozzle is fixedly connected to the surface of the water pipe through several branch pipes, and the surface of the fire box also has a rotating cabinet door for easy maintenance.

[0017] Compared with related technologies, the building fire protection system provided by this utility model has the following beneficial effects:

[0018] By setting up adjustable water mist spraying mechanism and adjustable dry powder spraying mechanism, smoke sensor and temperature sensor convert detection signals into electrical signals and transmit them to controller. The controller transmits the electrical signals to the adjustable dry powder spraying mechanism and the adjustable water mist spraying mechanism in sequence. The adjustable dry powder spraying mechanism can quickly control the fire by adjusting the rotation angle and spraying range. While controlling the fire, the adjustable water mist spraying mechanism continuously cools the fire source to prevent the fire from reigniting. It uses less water and solves the problem of the existing method of using fire extinguishing pipes, which uses a large amount of water and causes damage to the interior decoration, electronic equipment, furniture and other property.

[0019] Fire risk is monitored in real time by smoke and temperature sensors. The smoke and temperature sensors convert the detection signals into electrical signals and transmit them to the controller. The controller automatically activates the corresponding fire extinguishing mode based on the monitoring data, which improves the timeliness and accuracy of fire extinguishing and can cope with different types of fires. Compared with existing technologies, it can effectively reduce interference and damage to non-fire areas. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall structure of the building fire protection system provided by this utility model;

[0021] Figure 2 A structural schematic diagram showing the installation location of the fire protection system for buildings provided by this utility model;

[0022] Figure 3 A structural schematic diagram of the fire protection system for buildings provided by this utility model;

[0023] Figure 4 This is a schematic diagram of the main structure of an adjustable water mist spraying mechanism and an adjustable dry powder spraying mechanism.

[0024] Figure 5 This is a top view schematic diagram of an adjustable water mist spraying mechanism and an adjustable dry powder spraying mechanism.

[0025] Figure 6 This is a schematic diagram of the hydraulic rod.

[0026] Figure 7 This is a schematic diagram of the rotating rod.

[0027] Numbered in the diagram: 1. Building body; 2. Fire cabinet; 21. Partition; 22. Cavity 1; 23. Cavity 2; 231. Fixing plate; 232. Base 1; 233. Base 2; 24. Motor 1; 241. Water tank; 242. Water pipe; 243. Water pump; 25. Dry powder box; 251. Motor 2; 252. Dry powder pump; 26. Cabinet door; 3. Rotating rod; 31. Slide rail; 32. Slide plate; 321. Branch pipe; 33. Sliding block; 34. Hydraulic rod; 4. Fixing block; 41. Rotating column; 42. Connecting rod; 43. Rotating shaft; 44. Rotating plate; 5. Nozzle; 51. Nozzle hole; 6. Smoke sensor; 7. Temperature sensor; 8. Controller. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Please refer to the following: Figure 1 Know Figure 7 ,in, Figure 1 A schematic diagram of the overall structure of the building fire protection system provided by this utility model; Figure 2 A structural schematic diagram showing the installation location of the fire protection system for buildings provided by this utility model; Figure 3 A structural schematic diagram of the fire protection system for buildings provided by this utility model; Figure 4 This is a schematic diagram of the main structure of an adjustable water mist spraying mechanism and an adjustable dry powder spraying mechanism. Figure 5This is a top view schematic diagram of an adjustable water mist spraying mechanism and an adjustable dry powder spraying mechanism. Figure 6 This is a schematic diagram of the hydraulic rod. Figure 7 This is a schematic diagram of the rotating rod.

[0030] In the specific implementation process, such as Figures 1 to 7 As shown, the fire box 2 is fixed to the top wall of the building body 1. The fire box 2 is equipped with a drive mechanism 1, a drive mechanism 2, an adjustable water mist spraying mechanism and an adjustable dry powder spraying mechanism. The drive mechanism 1 is fixedly connected to one end of the adjustable water mist spraying mechanism, and the drive mechanism 2 is fixedly connected to one end of the adjustable dry powder spraying mechanism.

[0031] The drive mechanism includes a water tank 241 and a water pump 243. The water tank 241 and the water pump 243 are both fixed inside the fire box 2, and the water tank 241 and the water pump 243 are fixedly connected to one end of the adjustable water mist spraying mechanism through a water pipe 242.

[0032] The second drive mechanism includes a dry powder box 25 and a dry powder pump 252. Both the dry powder box 25 and the dry powder pump 252 are fixed inside the fire box 2, and the dry powder box 25 and the dry powder pump 252 are fixedly connected to one end of the adjustable dry powder spraying mechanism through a connecting pipe.

[0033] A smoke sensor 6, a temperature sensor 7, and a controller 8 are fixed to the outside of the fire box 2 from top to bottom.

[0034] It should be noted that within the drive mechanism 1, the water tank 241 is used to store fire-fighting water and provide a water source for water mist spraying.

[0035] Water pump 243: connected to water tank 241 and adjustable water mist spraying mechanism via water pipe 242, used to pressurize and deliver water to adjustable water mist spraying mechanism to form water mist for fire extinguishing;

[0036] It should be noted that within the second drive mechanism, there is a dry powder box: which stores fire extinguishing dry powder, such as ABC dry powder, for extinguishing different types of fires.

[0037] Dry powder pump: Connected to the dry powder box 25 and the adjustable dry powder spraying mechanism via a connecting pipe, used to transport dry powder to the adjustable dry powder spraying mechanism for fire extinguishing;

[0038] It should be noted that the smoke sensor 6, temperature sensor 7 and controller 8 are electrically connected, and the surfaces of the smoke sensor 6, temperature sensor 7 and controller 8 are all equipped with protective covers.

[0039] It should be further explained that by setting up an adjustable water mist spraying mechanism and an adjustable dry powder spraying mechanism, the smoke sensor 6 and the temperature sensor 7 convert the detection signals into electrical signals and transmit them to the controller 8. The controller 8 transmits the signals to the adjustable dry powder spraying mechanism and the adjustable water mist spraying mechanism in sequence in the form of electrical signals. The adjustable dry powder spraying mechanism can quickly control the fire by adjusting the rotation angle and spraying range. While controlling the fire, the adjustable water mist spraying mechanism continuously cools the fire source to prevent the fire from reigniting. It also uses less water and has a high effect and wide coverage.

[0040] It should be noted that the smoke sensor 6: when smoke enters, it will change the ionization state of the ionization chamber in the smoke sensor 6, thereby triggering an alarm. When smoke is detected, the smoke sensor 6 will convert the detected physical signal into an electrical signal and transmit it to the controller 8 wirelessly.

[0041] Temperature sensor 7: When the ambient temperature rises abnormally to the preset fire threshold, temperature sensor 7 will trigger an alarm. Temperature sensor 7 will also convert the detected temperature information into an electrical signal and transmit it to controller 8.

[0042] The controller 8, model HGM9510, contains components such as a microprocessor, signal amplification circuit, and logic judgment circuit. When it receives electrical signals from the smoke sensor 6 and the temperature sensor 7, the controller 8 first amplifies and filters the signals, and then determines whether the fire alarm conditions are met through logic judgment. Once a fire is confirmed, the controller 8 will immediately send start commands to the adjustable dry powder spraying mechanism and the adjustable water mist spraying mechanism in the form of electrical signals.

[0043] refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 As shown, a partition 21 is fixed to the bottom wall of the fire box 2, which divides the interior of the fire box 2 into cavity 1 22 and cavity 23. A fixing plate 231 is fixed to the inner side wall of the fire box 2. Drive mechanism 1, drive mechanism 2, adjustable water mist spraying mechanism and adjustable dry powder spraying mechanism are all fixed to the top of the fixing plate 231. Drive mechanism 1 and adjustable water mist spraying mechanism are located inside cavity 23, and drive mechanism 2 and adjustable dry powder spraying mechanism are located inside cavity 1 22.

[0044] The top of the fixed plate 231 is fixed with a base 1 232 and a base 233. The base 1 232 and the base 233 are located in the cavity 23 and the cavity 1 22, respectively. The water tank 241 and the water pump 243 are fixedly connected to the surface of the base 1 232 through the water pipe 242. The dry powder box 25 and the dry powder pump 252 are fixedly connected to the surface of the base 233 through the connecting pipe. The adjustable water mist spraying mechanism and the adjustable dry powder spraying mechanism are fixed on the top of the base 1 232 and the base 2 233, respectively.

[0045] The adjustable water mist spraying mechanism includes a motor 24 and several water mist spraying components. The several water mist spraying components are located opposite each other at the bottom of the motor 24. The motor 24 is fixed to the top of the base 232. The rotor of the motor 24 passes through the surface of the base 232 and is fixedly connected to the top of the several water mist spraying components.

[0046] The adjustable dry powder spraying mechanism includes a second motor 251 and several dry powder spraying components. The several dry powder spraying components are located opposite each other at the bottom of the second motor 251. The second motor 251 is fixed to the top of the second base 233. The rotor of the second motor 251 passes through the surface of the second base 233 and is fixedly connected to the top of the several dry powder spraying components.

[0047] It should be noted that by setting up partition 21, the interior of fire box 2 is divided into two independent cavities, so that the operation between drive component one and adjustable water mist spraying mechanism and drive component two and adjustable dry powder spraying mechanism are not affected, effectively utilizing the space inside fire box 2 and improving the compactness and integration of the equipment.

[0048] It should be noted that by the back-and-forth swinging of the rotors of motor 1 24 and motor 2 251, several water mist spraying components and several dry powder spraying components located at the bottom of motor 1 24 and motor 2 251 swing back and forth, thereby achieving swing spraying.

[0049] It should be further noted that several dry powder spraying components and several water mist spraying components have the same structure and the same adjustment method;

[0050] refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 as well as Figure 7As shown, the water mist spraying assembly includes a rotating rod 3 and several nozzles 5 fixed to the bottom of the rotating rod 3. Several equally spaced grooves 31 are opened around the surface of the rotating rod 3. Several sliders 33 and slide plates 32 slide on the inner sidewalls of the grooves 31. The tops of the sliders 33 are fixedly connected to the bottom of the slide plates 32. Several branch pipes 321 are also fixed to the tops of the sliders 33. The other ends of the branch pipes 321 pass through the surface of the slide plates 32 and are fixedly connected to the surface of the water pipe 242. A hydraulic rod 34 is also fixed to the bottom wall of the fire box 2. The hydraulic rod 34 is located inside the cavity 23. The output end of the hydraulic rod 34 is fixedly connected to the bottom of the slide plates 32. Several equally spaced fixing blocks 4 are fixed around the surface of the rotating rod 3. The surfaces of the fixing blocks 4 are all provided with rotating components.

[0051] Several rotating components include two opposing connecting rods 42 and a rotating plate 44. One end of the two connecting rods 42 rotates on the left and right sides of the fixed block 4 via a rotating column 41. The other end of the two connecting rods 42 is rotatably connected to one end of the rotating plate 44 via a rotating shaft 43. The other end of the rotating plate 44 rotates with a limiting block. The rotating plate 44 slides on the bottom wall of the slide groove 31 via the limiting block, and the limiting block is fixedly connected to the bottom of the slider 33.

[0052] Several nozzles 5 are fixedly mounted on the surfaces of several rotating plates 44. Each nozzle 5 has a spray hole 51 on its surface. One side of each nozzle 5 is fixedly connected to the surface of a water pipe 242 through several branch pipes 321. The surface of the fire box 2 also has a cabinet door 26 that is easy to maintain.

[0053] It should be noted that the surface of the nozzle 5 is provided with spray holes 51 for uniformly spraying water mist onto the fire source area. In use, the spray angle and spray range of the nozzle 5 are controlled by extending and retracting the hydraulic rod 34. That is, when the hydraulic rod 34 is pushed upward, it drives the slide plate 32 to move upward, and the slide plate 32 drives several sliders 33 at its bottom to move upward. Since the bottom of the sliders 33 is fixedly connected to the bottom of several limiting blocks, when the sliders 33 rise, the limiting blocks rise and slide in the slide groove 31. At this time, the rotating shaft 43 and the rotating column 41 rotate accordingly, and the nozzles 5 spread outward evenly, expanding the spray range and rotating the angle of the spray holes 51 on the surface of the nozzle 5 from oblique downward to horizontal, realizing the adjustment of the spray range and spray angle. Conversely, when the hydraulic rod 34 retracts inward, the nozzle 5 rotates counterclockwise, and the nozzles 5 retract inward, reducing the spray range.

[0054] It should be noted that branch pipe 321 is connected to water pipe 242 via slide plate 32 and slider 33 for water supply.

[0055] It should be further noted that the fire box 2 has a rotating cabinet door 26 on its surface, which facilitates daily inspection and maintenance, adding water to the water tank 241 and adding dry powder to the dry powder tank 25, thus reducing maintenance difficulty and cost.

[0056] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0057] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A building fire protection system, characterized in that The utility model provides a kind of fire-fighting box (2) including fixed in the top wall of building body (1), the inside of the fire-fighting box (2) is equipped with driving mechanism one, driving mechanism two, adjustable water mist spraying mechanism and adjustable dry powder spraying mechanism, driving mechanism one is fixedly connected with one end of adjustable water mist spraying mechanism, driving mechanism two is fixedly connected with one end of adjustable dry powder spraying mechanism; Driving mechanism one includes water tank (241) and water pump (243), water tank (241) and water pump (243) are fixed in the inside of fire-fighting box (2), and water tank (241) and water pump (243) are fixedly connected with one end of adjustable water mist spraying mechanism by water pipe (242). Driving mechanism two includes dry powder tank (25) and dry powder pump (252), dry powder tank (25) and dry powder pump (252) are fixed in the inside of fire-fighting box (2), and dry powder tank (25) and dry powder pump (252) are fixedly connected with one end of adjustable dry powder spraying mechanism by connecting pipe.

2. The building fire protection system of claim 1, wherein, The outside of fire-fighting box (2) is sequentially fixed with smoke sensor (6), temperature sensor (7) and controller (8) from top to bottom, the bottom wall of fire-fighting box (2) is fixed with partition (21), partition (21) divides the inside of fire-fighting box (2) into cavity one (22) and cavity two (23), the inside wall of fire-fighting box (2) is fixed with fixed plate (231), driving mechanism one, driving mechanism two, adjustable water mist spraying mechanism and adjustable dry powder spraying mechanism are fixed on the top of fixed plate (231), and driving mechanism one and adjustable water mist spraying mechanism are located in the inside of cavity two (23), driving mechanism two and adjustable dry powder spraying mechanism are located in the inside of cavity one (22).

3. The building fire protection system of claim 2, wherein, The top of fixed plate (231) is fixed with base one (232) and base two (233), base one (232) and base two (233) are located in cavity two (23) and cavity one (22) respectively, water tank (241) and water pump (243) are fixedly connected with the surface of base one (232) by water pipe (242), dry powder tank (25) and dry powder pump (252) are fixedly connected with the surface of base two (233) by connecting pipe, and adjustable water mist spraying mechanism and adjustable dry powder spraying mechanism are fixed on the top of base one (232) and base two (233) respectively.

4. The building fire protection system of claim 3, wherein, Adjustable water mist spraying mechanism includes motor one (24) and several water mist spraying assemblies, several water mist spraying assemblies are located at the bottom of motor one (24) oppositely, motor one (24) is fixed on the top of base one (232), the rotor of motor one (24) is fixedly connected with the top of several water mist spraying assemblies through the surface of base one (232).

5. The building fire protection system of claim 4, wherein, The adjustable dry powder spraying mechanism includes a second motor (251) and a plurality of dry powder spraying assemblies, the plurality of dry powder spraying assemblies are located at the bottom of the second motor (251), the second motor (251) is fixed on the top of the second base (233), and the rotor of the second motor (251) is fixedly connected with the tops of the plurality of dry powder spraying assemblies through the surface of the second base (233).

6. The building fire protection system of claim 5, wherein, The water mist spraying assembly includes a rotating rod (3) and a plurality of nozzles (5) fixed on the bottom of the rotating rod (3), a plurality of equidistantly distributed sliding grooves (31) are arranged on the surface of the rotating rod (3), a plurality of sliding blocks (33) and sliding plates (32) are slidably arranged on the inner side walls of the plurality of sliding grooves (31), the tops of the plurality of sliding blocks (33) are fixedly connected with the bottom of the sliding plate (32), a plurality of branch pipes (321) are further fixed on the tops of the plurality of sliding blocks (33), and the other ends of the plurality of branch pipes (321) are fixedly connected with the surface of the water pipe (242) through the surface of the sliding plate (32), the bottom wall of the fire-fighting box (2) is further fixed with a hydraulic rod (34), the hydraulic rod (34) is located in the second cavity (23), the output end of the hydraulic rod (34) is fixedly connected with the bottom of the sliding plate (32), and a plurality of equidistantly distributed fixing blocks (4) are fixed on the surface of the rotating rod (3), and the surfaces of the plurality of fixing blocks (4) are provided with rotating assemblies.

7. The building fire protection system of claim 6, wherein, Each of the rotating assemblies includes two opposite connecting rods (42) and a rotating plate (44), one end of each of the two connecting rods (42) is rotatably connected with the left and right sides of the fixing block (4) through a rotating column (41), the other end of each of the two connecting rods (42) is rotatably connected with one end of the rotating plate (44) through a rotating shaft (43), the other end of the rotating plate (44) is rotatably provided with a limiting block, the rotating plate (44) slides on the bottom wall of the sliding groove (31) through the limiting block, and the limiting block is fixedly connected with the bottom of the sliding block (33).

8. The building fire protection system of claim 7, wherein, The surfaces of the plurality of nozzles (5) are provided with a plurality of nozzle holes (51), one side of each of the plurality of nozzles (5) is fixedly connected with the surface of the water pipe (242) through the plurality of branch pipes (321), and the surface of the fire-fighting box (2) is further rotatably provided with a cabinet door (26) for convenient maintenance.

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