Lightweight water storage spraying mechanism for high-altitude fire extinguishing unmanned aerial vehicle
By designing a lightweight water storage and spraying mechanism, the problem of increased drone weight caused by complex nozzle structure was solved, thereby expanding the fire extinguishing range and achieving continuous water spraying effect, and improving the fire extinguishing efficiency and water storage capacity of the drone.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI WUJIN FIRE-FIGHTING SAFETY EQUIP CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-06-12
AI Technical Summary
The nozzle structure of existing high-altitude spraying fire extinguishing drones is complex, which increases the mass of the drone's exterior and reduces the water storage capacity inside the water tank, affecting the continuous spraying fire extinguishing effect.
A lightweight water storage and spraying mechanism was designed, including a water tank, a control structure and a high-pressure pump. The spraying range is expanded by staggered nozzles and rotating nozzles, reducing the mass of the UAV water storage structure and ensuring water storage capacity and fire extinguishing effect.
This enabled the drone to expand its firefighting range while maintaining stable flight, improving firefighting efficiency and continuous water spraying capability, while ensuring the drone's stability and water storage capacity.
Smart Images

Figure CN224345325U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire-fighting drone technology, specifically a lightweight water storage and spraying mechanism for high-altitude fire-fighting drones. Background Technology
[0002] Firefighting drones are drones used to extinguish fires. Depending on the structure of the drone, the firefighting methods are also different. Existing drones generally extinguish fires by towing water hoses, carrying fire extinguishers, and spraying water. However, existing firefighting drones still have certain shortcomings in use. The spray guns used for existing high-altitude spraying fire extinguishing have a limited spray range. For some fires involving a large area, operators need to frequently move the drone's position to spray, which is not convenient.
[0003] Patent CN217339846U discloses a fire-fighting drone spraying device. During fire extinguishing, a rotating mechanism drives the nozzle mechanism to rotate, and the centrifugal force makes the spraying range wider. The nozzle mechanism is equipped with nozzles on both sides that are inclined, which can further increase the spraying range when rotating. At the same time, an electric push rod is fixed on the top of the rotating mechanism so that the nozzle mechanism can be lowered below the drone's support legs during spraying, so as to avoid the support legs blocking the nozzle mechanism from spraying water for fire extinguishing. This allows the spraying device to either store water for spraying or be connected to an external water source for spraying, improving the applicability of the device. It can achieve two spraying methods: targeted spraying of a certain location and wide-area spraying, so as to select according to the fire area.
[0004] In the aforementioned patent, the drone solves the problems mentioned above. However, the drone in this patent also has the following problems: during the use of the drone, the water spraying process needs to be completed through the first and second nozzles. Multiple control structures are set at the upper end of the nozzles, and high-pressure water pumps and external water suction pipes are set at the upper end of the water tank. This will increase the mass of the water distribution structure on the outside of the drone, thereby reducing the water storage capacity inside the water tank and easily affecting the continuous water spraying fire extinguishing effect of the drone.
[0005] To address the aforementioned issues, there is an urgent need for innovative design based on the existing drone structure. Utility Model Content
[0006] The purpose of this invention is to provide a lightweight water-storage spraying mechanism for high-altitude fire-fighting drones, in order to solve the problem mentioned in the background art that the upper end of the nozzle is equipped with multiple control structures, and the upper end of the water tank is equipped with high-pressure water pumps and external water extraction pipes, which would increase the mass of the water-spraying structure on the outside of the drone, thereby reducing the water storage capacity inside the water tank and easily affecting the continuous water spraying fire-fighting effect of the drone.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a lightweight water storage and spraying mechanism for a high-altitude firefighting drone, comprising a body and a lighting lamp installed on the upper part of the body;
[0008] The outer side of the machine body is provided with a propeller assembly at equal angles, and a support frame is fixedly installed at the lower end of the machine body. Support rods are installed at equal intervals inside the support frame, and a monitoring probe is nested on the outer side of the machine body.
[0009] The upper end of the support rod is fitted with a water tank with a filling port on the outside. A control structure is fixedly installed on the outside of the machine body, and a high-pressure pump is fixedly installed on the outside of the control structure.
[0010] Preferably, a water pumping pipe and a water delivery pipe connected to a high-pressure pump are installed on the outside of the control structure, and the end of the water pumping pipe away from the control structure is connected to a water storage tank.
[0011] Preferably, an adapter is bonded to the outside of the water storage tank, and the adapter is connected to the end of the water supply pipe away from the control structure. Furthermore, two sets of flexible hoses are staggered at the end of the adapter away from the machine body.
[0012] Preferably, the end of the hose furthest from the adapter is connected to a spray pipe, and the end of the spray pipe furthest from the hose is threaded with a nozzle.
[0013] Preferably, a mounting plate for mounting a drive motor is fixedly installed on the outer side of the machine body, and a reciprocating lead screw fixedly connected to the output end of the drive motor is rotatably connected to the mounting plate.
[0014] Preferably, the threaded connector on the outer side of the reciprocating screw is fixedly installed inside the sliding plate, and the sliding plate is slidably installed on the outer side of the positioning rod fixedly installed inside the mounting plate.
[0015] Preferably, the limiting rod fixedly installed at the lower end of the mounting plate is rotatably connected to the end of the nozzle near the machine body, and the rotating rod rotatably installed inside the mounting plate is rotatably connected to the nozzle.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] 1. A water storage tank is installed and secured to the upper end of equidistant support rods. This ensures the stability of the water storage tank installation and prevents it from being bumped or knocked during normal use, thus protecting the water storage tank and ensuring the stable operation of the fire-fighting drone's water supply and fire-fighting process.
[0018] 2. Equipped with a control structure and a high-pressure pump, the high-pressure pump is controlled by the control structure to allow water inside the water tank to be sprayed out through two sets of staggered nozzles. This reduces the mass of the drone's water storage structure, thereby increasing the water storage capacity inside the tank, ensuring a normal water supply for the fire-fighting drone, and thus ensuring the drone's continuous fire-fighting effect.
[0019] 3. Furthermore, a rotating rod and a limiting rod are provided. The rotating rod is driven to rotate by the sliding rod, which causes the nozzle to rotate and the nozzle to rotate horizontally around the limiting rod. This results in the water jets from the nozzle being distributed in two fan shapes, which expands the fire extinguishing range and improves the fire extinguishing effect of the drone while it is flying stably. Attached Figure Description
[0020] Figure 1 This is a top-view three-dimensional structural diagram of the present invention;
[0021] Figure 2 This is a top-view three-dimensional structural diagram of the lighting lamp of this utility model;
[0022] Figure 3 This is a three-dimensional structural diagram of the water storage tank of this utility model from a bottom view;
[0023] Figure 4 This is a top-view three-dimensional structural diagram of the mounting plate of this utility model;
[0024] Figure 5 This is a bottom-view three-dimensional structural diagram of the water pipe of this utility model;
[0025] Figure 6 This is a top-view three-dimensional structural diagram of the sliding plate of this utility model.
[0026] In the diagram: 1. Body; 2. Lighting lamp; 3. Propeller assembly; 4. Support frame; 5. Monitoring probe; 6. Support rod; 7. Water tank; 8. Control structure; 9. High-pressure pump; 10. Pumping pipe; 11. Water delivery pipe; 12. Adapter; 13. Hose; 14. Spray pipe; 15. Nozzle; 16. Mounting plate; 17. Filling port; 18. Drive motor; 19. Reciprocating screw; 20. Threaded connector; 21. Sliding plate; 22. Positioning rod; 23. Rotating rod; 24. Limiting rod. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] In a specific embodiment, such as Figures 1-3 The basic operating procedure of the firefighting drone is shown in the figure.
[0029] The machine body 1 and the lighting lamp 2 installed on the upper part of the machine body 1; the propeller assembly 3 is set at equal angles on the outer side of the machine body 1, and the support frame 4 is fixedly installed on the lower end of the machine body 1, and the support rods 6 are installed at equal intervals inside the support frame 4; the monitoring probe 5 is nested on the outer side of the machine body 1; the water tank 7 with the filling port 17 on the outer side is snapped onto the upper end of the support rod 6; the control structure 8 is fixedly installed on the outer side of the machine body 1, and the high pressure pump 9 is fixedly installed on the outer side of the control structure 8.
[0030] When using this high-altitude firefighting drone, it is necessary to control the drone through a remote control device to extinguish fires in high-altitude buildings. During this process, the drone is propelled to take off by the operation of the propeller assembly 3. At the same time, the lighting 2 can illuminate the interior of the building at night, and the monitoring probe 5 can transmit the situation captured by the drone back to the remote control device in real time, so that firefighters can take effective firefighting measures and ensure the effectiveness of the firefighting process. Meanwhile, the water in the water tank 7 will be sprayed out through the nozzle 15 to control the fire in the building and ensure the stability of the drone's use.
[0031] In one specific embodiment, such as Figures 1-4 The spraying and extinguishing process is shown in the figure.
[0032] The control structure 8 is equipped with a water pumping pipe 10 and a water delivery pipe 11 connected to the high-pressure pump 9. The end of the water pumping pipe 10 away from the control structure 8 is connected to the water storage tank 7. The water storage tank 7 is bonded with an adapter 12, which is connected to the end of the water delivery pipe 11 away from the control structure 8. The adapter 12 is provided with two sets of hoses 13 arranged alternately at the end away from the machine body 1. The end of the hose 13 away from the adapter 12 is connected to a spray pipe 14, and the end of the spray pipe 14 away from the hose 13 is threaded with a nozzle 15.
[0033] When using the lightweight water-storage spraying mechanism of this high-altitude firefighting drone, water needs to be added to the water tank 7 through the filling port 17. When the drone takes off and reaches the outside of the building that needs firefighting, it can be controlled by the remote control device through the control structure 8. At this time, the control structure 8 will work and cause the high-pressure pump 9 to pump water, thereby drawing the water from the water tank 7 through the pumping pipe 10 and delivering it to the adapter 12 through the water supply pipe 11. Then, the water inside the adapter 12 can be sprayed out from the nozzle 15 through the hose 13 and the spray pipe 14, so that the water can accurately extinguish the fire in the high-rise building, thereby ensuring the firefighting effect of the drone and reducing the weight of the drone's water-storage spraying mechanism. This allows the drone to maximize the internal volume of the water tank 7, making it easier for firefighters to carry out firefighting.
[0034] Based on the above embodiments, such as Figures 1-6 The process of the drone spraying mechanism performing stable, large-scale fire extinguishing is shown in the diagram.
[0035] A mounting plate 16 for mounting a drive motor 18 is fixedly installed on the outer side of the body 1. A reciprocating screw 19 fixedly connected to the output end of the drive motor 18 is rotatably connected to the mounting plate 16. A threaded connector 20 threaded on the outer side of the reciprocating screw 19 is fixedly installed inside the sliding plate 21. The sliding plate 21 is slidably installed on the outer side of a positioning rod 22 fixedly installed inside the mounting plate 16. A limiting rod 24 fixedly installed at the lower end of the mounting plate 16 is rotatably connected to the end of the nozzle 14 near the body 1. A rotating rod 23 rotatably installed inside the mounting plate 16 is rotatably connected to the nozzle 14.
[0036] When using the lightweight water-storage spraying mechanism of this high-altitude firefighting drone, water is sprayed from the nozzle 15 to extinguish fires in high-rise buildings. During high-altitude firefighting, it is necessary to ensure the stability of the drone and expand the firefighting range. At this time, the remote control device needs to control the drive motor 18 to work. The drive motor 18 drives the reciprocating screw 19 to rotate. The reciprocating screw 19 then drives the sliding plate 21 to slide back and forth on the outside of the positioning rod 22 through the threaded connector 20. During the movement of the sliding plate 21, the rotating rod 23 pushes the nozzle 14 to rotate. The nozzle 14 then reciprocates around the limiting rod 24, and the hose 13 deforms. This allows the two sets of nozzles 14 and nozzles 15 to rotate crosswise and the water sprayed from the nozzles 15 to maintain a fan-shaped dispersion. This allows the drone to expand the firefighting range while maintaining a horizontal state, effectively improving the firefighting efficiency of the drone spraying mechanism and increasing its overall practicality.
[0037] The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A lightweight water-storage spraying mechanism for a high-altitude fire-fighting drone, comprising a body (1) and a lighting lamp (2) installed on the upper part of the body (1); Its features are: The outer side of the body (1) is provided with a propeller assembly (3) at equal angles, and a support frame (4) is fixedly installed at the lower end of the body (1). Support rods (6) are installed at equal intervals inside the support frame (4). A monitoring probe (5) is nested on the outer side of the body (1). The upper end of the support rod (6) is fitted with a water tank (7) with a filling port (17) on the outside. The outer side of the body (1) is fitted with a control structure (8), and a high-pressure pump (9) is fixedly installed on the outer side of the control structure (8).
2. The lightweight water storage and spraying mechanism for a high-altitude firefighting drone according to claim 1, characterized in that: The control structure (8) is equipped with a pumping pipe (10) and a water delivery pipe (11) connected to a high-pressure pump (9) on its outer side, and the end of the pumping pipe (10) away from the control structure (8) is connected to the water storage tank (7).
3. A lightweight water storage and spraying mechanism for a high-altitude firefighting drone according to claim 2, characterized in that: The water storage tank (7) is attached to the outside of the adapter (12), and the adapter (12) is connected to the end of the water pipe (11) away from the control structure (8), and the adapter (12) is provided with two sets of hoses (13) arranged alternately at the end away from the body (1).
4. A lightweight water storage and spraying mechanism for a high-altitude firefighting drone according to claim 3, characterized in that: The end of the hose (13) away from the adapter (12) is connected to the nozzle (14), and the end of the nozzle (14) away from the hose (13) is threaded with a nozzle (15).
5. A lightweight water storage and spraying mechanism for a high-altitude firefighting drone according to claim 4, characterized in that: The outer side of the body (1) is fixedly mounted with a mounting plate (16) for mounting a drive motor (18), and the reciprocating screw (19) fixedly connected to the output end of the drive motor (18) is rotatably connected to the mounting plate (16).
6. A lightweight water storage and spraying mechanism for a high-altitude firefighting drone according to claim 5, characterized in that: The threaded connector (20) with the threaded outer side of the reciprocating screw (19) is fixedly installed inside the sliding plate (21), and the sliding plate (21) is slidably installed on the outer side of the positioning rod (22) fixedly installed inside the mounting plate (16).
7. A lightweight water storage and spraying mechanism for a high-altitude firefighting drone according to claim 6, characterized in that: The limiting rod (24) fixedly installed at the lower end of the mounting plate (16) is rotatably connected to the end of the nozzle (14) near the body (1), and the rotating rod (23) rotatably installed inside the mounting plate (16) is rotatably connected to the nozzle (14).