Fire extinguishing unmanned aerial vehicle fire retardant spraying device

Abstract

The utility model discloses fire extinguishing unmanned plane flame retardant spraying device, including storage component, conveying component and spraying component, the storage component is installed in the unmanned plane fuselage, is used for storing flame retardant, the storage component includes storage tank, is provided with agitating mechanism in the storage tank inside, the conveying component sets up in the installation cavity, the installation cavity outside is fixedly installed through the fixed frame in the unmanned plane fuselage below inside, and installation cavity is located the bottom of storage tank, the conveying component one end is connected with the discharge gate of the bottom of storage tank, is used for conveying flame retardant, the conveying component includes the conveying pipe and sets up flow regulation mechanism on the conveying pipe, the spraying component is connected with the other end of conveying component, is used for spraying flame retardant to the fire area. The utility model discloses rational in structure, convenient operation can effectively promote the operation effect of fire extinguishing unmanned plane in the fire rescue, has higher practicality and popularization value.

Description

Technical Field

[0001] This utility model relates to the field of drone firefighting technology, specifically a flame retardant spraying device for firefighting drones. Background Technology

[0002] With the continuous development of drone technology, drones have been widely used in firefighting. During fire rescue operations, firefighting drones can carry flame retardants to the fire scene and spray them onto the fire area through spraying devices to control the spread of the fire and extinguish it.

[0003] However, existing fire-fighting drone flame retardant spraying devices have some shortcomings in use. On the one hand, flame retardants are prone to sedimentation and stratification during storage, resulting in uneven concentrations of the sprayed flame retardant and affecting the fire-fighting effect. On the other hand, most existing spraying devices cannot adjust the spraying flow rate of the flame retardant according to the actual situation at the fire scene (such as the fire area and fire size). Either the flow rate is too small to quickly control the fire, or the flow rate is too large, resulting in waste of flame retardant.

[0004] Therefore, it is necessary to design a flame retardant spraying device for fire-fighting drones that can solve the above problems, so as to improve fire-fighting efficiency, reduce flame retardant waste, and enhance the operational performance of fire-fighting drones. Utility Model Content

[0005] The purpose of this invention is to provide a flame retardant spraying device for fire-fighting drones to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fire-fighting drone flame retardant spraying device, comprising a storage component, a conveying component, and a spraying component. The storage component is installed inside the drone fuselage and is used to store flame retardant. The storage component includes a storage tank, and a stirring mechanism is provided inside the storage tank. The conveying component is disposed in an installation cavity, which is fixedly installed on the inner side of the drone fuselage below the outer side by a fixing bracket. The installation cavity is located at the bottom of the storage tank. One end of the conveying component is connected to the outlet at the bottom of the storage tank for conveying flame retardant. The conveying component includes a conveying pipe and a flow regulating mechanism disposed on the conveying pipe. The spraying component is connected to the other end of the conveying component for spraying flame retardant onto the fire area. The spraying component includes a nozzle base and multiple atomizing nozzles mounted on the nozzle base.

[0007] Preferably, the stirring mechanism includes a stirring motor, a stirring shaft, and stirring blades. The stirring motor is installed on the top of the storage tank. One end of the stirring shaft is connected to the output end of the stirring motor, and the other end extends into the storage tank. The stirring blades are fixedly installed on the part of the stirring shaft located inside the storage tank.

[0008] Preferably, the stirring blades are spirally distributed on the stirring shaft.

[0009] Preferably, the flow regulation mechanism includes a flow regulation valve and a controller for controlling the opening degree of the flow regulation valve, wherein the controller is electrically connected to the flight control system of the UAV.

[0010] Preferably, the conveying assembly further includes a conveying pump, which is disposed on the conveying pipe and located between the discharge port of the storage tank and the flow regulating mechanism. Both the conveying pump and the flow regulating mechanism are installed in the mounting cavity.

[0011] Preferably, the nozzle holder is a ring structure, with three nozzle holders fixed horizontally at the same center on the lower side of the mounting cavity. The three nozzle holders are respectively connected to the flow adjustment mechanism. The multiple atomizing nozzles are evenly distributed around the nozzle holder, with the atomizing nozzle on the innermost nozzle holder tilted inward, the atomizing nozzle on the middle nozzle holder vertically downward, and the atomizing nozzle on the outermost nozzle holder tilted outward.

[0012] Preferably, the top of the storage box is provided with a feed inlet, and the feed inlet is provided with a sealing cover.

[0013] Preferably, the storage component is connected to the drone body via a detachable connection structure. The detachable connection structure includes a mounting hole on the drone body and a mounting bracket on the outside of the storage box. The mounting bracket is connected to the mounting hole on the drone body via bolts.

[0014] Preferably, the conveying pipe is made of corrosion-resistant, high-strength plastic material.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model has a stirring mechanism installed inside the storage tank. The stirring motor drives the stirring shaft and stirring blades to rotate, which fully stirs the flame retardant in the storage tank. This can effectively prevent the flame retardant from settling and stratifying, ensure the uniform concentration of the flame retardant, and thus improve the fire extinguishing effect.

[0017] 2. This utility model incorporates a flow regulation mechanism. Electrically connected to the drone's flight control system via a controller, personnel can adjust the flow regulation valve opening by sending commands from the flight control system to the controller based on the actual conditions at the fire scene. This allows the three nozzles to operate in combination or individually, achieving precise control over the flame retardant spray flow. This ensures effective fire extinguishing while preventing flame retardant waste, reducing the drone's load, and improving its endurance and flight stability.

[0018] 3. The nozzle holder of this utility model adopts a ring structure, with multiple atomizing nozzles evenly distributed around the circumference of the nozzle holder. The spraying directions of the atomizing nozzles on the three nozzle holders are different. The spraying range of the flame retardant can be controlled by the flow regulating mechanism, so that the flame retardant can be accurately sprayed to the fire area, thereby improving the efficiency of fire extinguishing operations.

[0019] 4. The material storage component of this utility model adopts a detachable connection structure with the drone body, which facilitates the installation, disassembly and maintenance of the material storage component; the conveying pipe is made of corrosion-resistant and high-strength plastic material, which extends the service life and reduces the load on the drone.

[0020] In summary, this utility model has a reasonable structure and is easy to operate, which can effectively improve the operational effectiveness of firefighting drones in fire rescue and has high practicality and promotion value. Attached Figure Description

[0021] Figure 1 This is a three-dimensional top view of the structure of this utility model;

[0022] Figure 2 This is a three-dimensional upward view of the structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the fuselage structure of the UAV of this utility model;

[0024] Figure 4 This is a cross-sectional view of the material storage component of this utility model;

[0025] Figure 5 This is a three-dimensional top view of the conveying component and spraying component of this utility model;

[0026] Figure 6 This is a three-dimensional bottom view of the conveying component and spraying component of this utility model.

[0027] In the diagram: 1. UAV fuselage; 2. Material storage assembly; 21. Material storage bin; 22. Agitator motor; 23. Agitator shaft; 24. Agitator blades; 25. Feed inlet; 26. Sealing cover; 27. Mounting frame; 3. Conveying assembly; 31. Mounting cavity; 32. Fixing frame; 33. Conveying pump; 34. Flow regulation mechanism; 35. Conveying pipe; 4. Spraying assembly; 41. Nozzle holder; 42. Atomizing nozzle. Detailed Implementation

[0028] 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.

[0029] Please see Figure 1-6 The present invention provides a technical solution: a fire retardant spraying device for fire extinguishing drones, comprising a storage component 2, a conveying component 3, and a spraying component 4.

[0030] The storage assembly 2 is installed inside the drone fuselage 1 and is used to store flame retardant. The storage assembly 2 includes a storage tank 21, inside which is a stirring mechanism. This mechanism stirs the flame retardant within the storage tank 21 to prevent sedimentation and stratification, ensuring uniform concentration. The stirring mechanism includes a stirring motor 22, a stirring shaft 23, and stirring blades 24. The stirring motor 22 is mounted on top of the storage tank 21. One end of the stirring shaft 23 is connected to the output of the stirring motor 22, and the other end extends into the storage tank 21. The stirring blades 24 are fixedly installed on the portion of the stirring shaft 23 located inside the storage tank 21. To improve the stirring effect, the stirring blades 24 are spirally distributed on the stirring shaft 23. This structural design allows for more thorough stirring, further ensuring uniform mixing of the flame retardant.

[0031] The storage tank 21 has a feed inlet 25 on its top, and a sealing cover 26 on the feed inlet 25. The sealing cover 26 prevents the flame retardant from overflowing from the feed inlet 25 during the drone's flight, and also prevents external impurities from entering the storage tank 21 and contaminating the flame retardant. A transparent observation window with graduations is also provided on the side wall of the storage tank 21. The window allows operators to monitor the remaining amount of flame retardant in the storage tank 21 in real time and replenish it promptly. Furthermore, the storage assembly 2 is connected to the drone fuselage 1 via a detachable connection structure. This detachable connection structure includes mounting holes on the drone fuselage 1 and a mounting bracket 27 on the outside of the storage tank 21. The mounting bracket 27 is bolted to the mounting holes on the drone fuselage 1. This detachable connection facilitates the installation, disassembly, and maintenance of the storage assembly 2. When the storage tank 21 is damaged or needs cleaning, it can be quickly removed from the drone fuselage 1, making operation convenient.

[0032] The conveying assembly 3 is housed within the mounting cavity 31. The mounting cavity 31 is fixedly mounted on the inner side below the UAV fuselage 1 via a mounting bracket 32. The mounting cavity 31 is located at the bottom of the storage tank 21. One end of the conveying assembly 3 is connected to the outlet at the bottom of the storage tank 21, used to convey the flame retardant from the storage tank 21 to the spraying assembly 4. The conveying assembly 3 includes a conveying pipe 35, a flow regulating mechanism 34 mounted on the conveying pipe 35, and a conveying pump 33. The conveying pump 33 is mounted on the conveying pipe 35 and located between the outlet of the storage tank 21 and the flow regulating mechanism 34. Both the conveying pump 33 and the flow regulating mechanism 34 are mounted within the mounting cavity 31. The conveying pump 33 provides power for the delivery of the flame retardant, ensuring that the flame retardant can be delivered stably and efficiently to the spraying assembly 4. The flow regulating mechanism 34 includes a flow regulating valve and a controller for controlling the opening degree of the flow regulating valve. The controller is electrically connected to the UAV's flight control system. Workers can send control commands to the controller via the drone's flight control system. The controller then adjusts the opening of the flow regulating valve according to the commands, thereby achieving precise control of the flame retardant spraying flow rate. By rationally adjusting the spraying flow rate based on the actual conditions at the fire scene, such as the fire area and fire size, both fire extinguishing effectiveness and flame retardant waste can be avoided. The delivery pipe 35 is made of corrosion-resistant, high-strength plastic. This material not only has excellent corrosion resistance, preventing the flame retardant from corroding the delivery pipe 35 and extending its service life, but also has a lighter weight, reducing the overall load on the drone and improving its flight performance.

[0033] The spraying assembly 4 is connected to the other end of the delivery assembly 3 and is used to spray flame retardant onto the fire area. The spraying assembly 4 includes a nozzle seat 41 and multiple atomizing nozzles 42 mounted on the nozzle seat 41. The nozzle seat 41 has a ring structure, and the multiple atomizing nozzles 42 are evenly distributed around the circumference of the nozzle seat 41, which can make the spraying range of the flame retardant wider and improve the efficiency of fire extinguishing operations. Three nozzle seats 41 are fixed horizontally at the same center on the lower side of the mounting cavity 31. The three nozzle seats 41 are respectively connected to the flow regulating mechanism 34, and the atomizing nozzles 42 on the innermost nozzle seat 41 are inclined inward, the atomizing nozzles 42 on the middle nozzle seat 41 are vertically downward, and the atomizing nozzles 42 on the outermost nozzle seat 41 are inclined outward. By controlling the opening of the flow regulating valve, each nozzle seat 41 can be controlled to work individually or in combination. This allows for control of the spraying range through atomizing nozzles 42 with different orientations, and reasonable adjustment of the spraying flow rate. This ensures the fire extinguishing effect while avoiding waste of flame retardant, enabling the flame retardant to be accurately sprayed onto the fire area, further improving the fire extinguishing effect.

[0034] Specifically, before the drone takes off for the fire scene, staff open the sealing cap 26 on top of the storage tank 21 and inject the prepared flame retardant into the storage tank 21 through the inlet 25. After filling, the sealing cap 26 is tightened to prevent the flame retardant from overflowing or external impurities from entering during flight. The mounting bracket 27 on the storage tank 21 is fixed to the mounting hole on the drone fuselage 1 with bolts. The stirring motor 22 on top of the storage tank 21 is started, driving the stirring shaft 23 and the spirally distributed stirring blades 24 to rotate, pre-stirring the flame retardant in the storage tank 21, breaking up any initial sediment that may exist in the flame retardant, and ensuring a uniform concentration of the flame retardant to avoid affecting the fire extinguishing effect due to uneven concentration during the initial spraying stage.

[0035] While the drone flies to the fire scene and reaches the preset operating altitude to carry out operations, the mixing mechanism remains operational. The discharge port at the bottom of the storage tank 21 is connected to the conveying pipe 35. The conveying pump 33 is started, and the conveying pump 33 draws the flame retardant in the storage tank 21 into the conveying pipe 35, causing the flame retardant to flow along the conveying pipe 35 towards the spraying component 4.

[0036] Downstream of the delivery pump 33, the flow regulating mechanism 34 begins operation. Personnel send flow commands to the UAV flight control system via a ground control terminal. The flight control system transmits the commands to the controller of the flow regulating mechanism 34. The controller adjusts the opening of the flow regulating valve according to the commands, controlling the spray flow or spraying status of the atomizing nozzles 42 on the three nozzle seats 41. For example, when the fire is large, all three nozzle seats 41 can operate simultaneously, and the valve opening can be increased to increase the spray flow for rapid fire control. When the fire is small, the operating status of the three nozzle seats 41 can be selectively controlled, and the opening can be reduced to avoid wasting flame retardant. The flow regulating valve provides real-time feedback of the opening data to the controller, forming a closed-loop control to ensure that the actual spray flow matches the set value.

[0037] The flame retardant, after flow regulation, enters the nozzle seat 41 of the spraying assembly 4 along the delivery pipe 35. The annular nozzle seat 41 evenly distributes the flame retardant to multiple circumferential atomizing nozzles 42, converting the flame retardant into fine droplets. The droplets are sprayed into the fire area through the spray holes on the protective cover to carry out fire extinguishing work.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flame retardant spraying device for firefighting drones, characterized in that, include: The storage component (2) is installed inside the fuselage (1) of the drone and is used to store flame retardant. The storage component (2) includes a storage tank (21) and a stirring mechanism is provided inside the storage tank (21). The conveying assembly (3) is installed inside the mounting cavity (31). The outer side of the mounting cavity (31) is fixedly installed on the inner side below the fuselage (1) of the drone by a fixing bracket (32). The mounting cavity (31) is located at the bottom of the storage box (21). One end of the conveying assembly (3) is connected to the discharge port at the bottom of the storage box (21) for conveying flame retardant. The conveying assembly (3) includes a conveying pipe (35) and a flow regulating mechanism (34) installed on the conveying pipe (35). The spraying assembly (4), connected to the other end of the delivery assembly (3), is used to spray flame retardant into the fire area. The spraying assembly (4) includes a nozzle seat (41) and a plurality of atomizing nozzles (42) mounted on the nozzle seat (41).

2. The fire-fighting drone flame retardant spraying device according to claim 1, characterized in that: The stirring mechanism includes a stirring motor (22), a stirring shaft (23), and stirring blades (24). The stirring motor (22) is installed on the top of the storage tank (21). One end of the stirring shaft (23) is connected to the output end of the stirring motor (22), and the other end extends into the storage tank (21). The stirring blades (24) are fixedly installed on the part of the stirring shaft (23) located inside the storage tank (21).

3. The fire-fighting drone flame retardant spraying device according to claim 2, characterized in that: The stirring blades (24) are spirally distributed on the stirring shaft (23).

4. The fire-fighting drone flame retardant spraying device according to claim 1, characterized in that: The flow regulation mechanism (34) includes a flow regulation valve and a controller for controlling the opening degree of the flow regulation valve, the controller being electrically connected to the flight control system of the UAV.

5. The fire-fighting drone flame retardant spraying device according to claim 1, characterized in that: The conveying assembly (3) also includes a conveying pump (33), which is installed on the conveying pipe (35) and located between the outlet of the storage tank (21) and the flow regulating mechanism (34). Both the conveying pump (33) and the flow regulating mechanism (34) are installed in the mounting cavity (31).

6. The fire-fighting drone flame retardant spraying device according to claim 1, characterized in that: The nozzle seat (41) is a ring structure. Three nozzle seats (41) are fixed horizontally at the same center on the lower side of the mounting cavity (31). The three nozzle seats (41) are connected to the flow adjustment mechanism (34) respectively. The multiple atomizing nozzles (42) are evenly distributed around the nozzle seat (41). The atomizing nozzle (42) on the innermost nozzle seat (41) is inclined inward, the atomizing nozzle (42) on the middle nozzle seat (41) is set vertically downward, and the atomizing nozzle (42) on the outermost nozzle seat (41) is inclined outward.

7. The fire-fighting drone flame retardant spraying device according to claim 1, characterized in that: The top of the storage box (21) is provided with a feed inlet (25), and a sealing cover (26) is provided on the feed inlet (25).

8. The fire-fighting drone flame retardant spraying device according to claim 1, characterized in that: The storage component (2) is connected to the drone body (1) by a detachable connection structure. The detachable connection structure includes a mounting hole on the drone body (1) and a mounting bracket (27) on the outside of the storage box (21). The mounting bracket (27) is connected to the mounting hole on the drone body (1) by bolts.

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