Fire extinguishing spray head for unmanned aerial vehicle

Abstract

The utility model relates to the technical field of fire extinguishing equipment, and discloses a fire extinguishing spray head for an unmanned aerial vehicle, which comprises a mounting seat connected and mounted with the bottom end of the unmanned aerial vehicle, a communicating pipe is embedded at the central axis of the bottom end of the mounting seat, a protective component is arranged on the outer wall of the communicating pipe, a spherical spray head is arranged at the bottom end of the communicating pipe, and the spray head is connected with the unmanned aerial vehicle. Spraying holes are formed in the surface of the spraying head, and an angle adjusting assembly is arranged on the surface of the spraying head. According to the fire extinguishing spraying nozzle for the unmanned aerial vehicle, in the using process, the temperature of the bottom side of the mounting base is detected through a temperature sensor, when the temperature exceeds a set safety value, an electromagnetic valve can be started, water is sprayed through a branch pipe and an atomization nozzle, a water curtain is formed on the peripheral side of the unmanned aerial vehicle, and the safety protection effect on the unmanned aerial vehicle is achieved; and when the temperature of the bottom side of the mounting base is low, the electromagnetic valve is kept in a closed state, water loaded by the unmanned aerial vehicle is used for fire extinguishing work, and normal proceeding of the fire extinguishing work is ensured.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguishing equipment technology, and more specifically to a fire extinguishing spray head for drones. Background Technology

[0002] Firefighting drones are specialized drones modified from traditional drones and equipped with firefighting-related equipment. When a fire occurs, they can use their onboard high-resolution digital cameras, high-definition cameras, and infrared devices to observe and locate the fire scene. Then, through their onboard payloads, such as dry powder extinguishing canisters, fire extinguishing bombs, and water bags, they can precisely deliver extinguishing agents to the core area of ​​the fire source to achieve the purpose of extinguishing the fire.

[0003] A search revealed an existing patent (publication number: CN218552942U) that discloses a fire-extinguishing spray nozzle for drones. During use, the protective shell effectively protects the internal connecting pipe. By setting a channel between the inner wall of the protective shell and the outer wall of the connecting pipe, and connecting multiple sets of atomizing nozzles distributed along the axial direction of the protective shell to the channel, water can be supplied to the atomizing nozzles through the channel without the need for additional piping after the connecting pipe is connected to the water supply pipe. The atomizing nozzles can form a multi-layer protective water curtain under and around the drone, reducing the impact of the on-site temperature on the drone's operation and preventing damage to the drone. However, in the process of realizing this utility model, the inventors discovered the following problems with the existing technology: The above-mentioned fire-extinguishing spray nozzle for drones can form a protective water curtain around the drone using the atomizing nozzle to provide heat insulation and cooling protection for the drone. However, the atomizing nozzle is normally open. If the drone is in an upwind position or other normal temperature environment for fire extinguishing, the water spraying from the atomizing nozzle will cause water waste. The drone's load capacity is limited, which will affect the fire extinguishing work. Furthermore, the spray direction of the nozzle body is fixed vertically downward, and the angle is difficult to adjust. Under such circumstances, it is difficult to carry out fire extinguishing work in environments where there are obstacles above the fire source, and it has the defect of poor applicability.

[0004] In view of this, this utility model proposes a fire-extinguishing sprinkler head for drones to solve this problem. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a fire extinguishing sprinkler head for drones to solve the problems existing in the background art.

[0006] This utility model provides the following technical solution: a fire extinguishing spray nozzle for drones, including a mounting base that is connected and installed to the bottom of the drone, a connecting pipe is embedded at the central axis of the bottom end of the mounting base, a protective component is provided on the outer wall of the connecting pipe, a spray head is provided at the bottom end of the connecting pipe, the spray head is spherical, spray holes are opened on the surface of the spray head, and an angle adjustment component is provided on the surface of the spray head.

[0007] The protective component includes branch pipes that are uniformly embedded in the outer wall of the connecting pipe in a circumferential array. An atomizing nozzle is fixedly installed at the end of the branch pipe away from the connecting pipe. A solenoid valve is provided on the surface of the branch pipe. A temperature sensor is fixedly installed at the bottom of the mounting base. Both the temperature sensor and the solenoid valve are electrically connected to the external drone.

[0008] The angle adjustment assembly includes a connecting sleeve at the bottom of the connecting pipe, a horizontal shaft fixedly mounted on the surface of the spray head, the spray head being rotatably mounted on the bottom of the connecting sleeve via the horizontal shaft, a round opening corresponding to the bottom of the connecting sleeve, the water outlet of the spray hole extending to the outside through the round opening, an electric push rod fixedly mounted on the outer wall of the connecting sleeve, a rack fixedly mounted on the telescopic end of the electric push rod, and a gear plate fixedly mounted on the surface of the horizontal shaft, with the rack and gear plate meshing with each other.

[0009] As a further description of the above technical solution: the surface of the mounting base is provided with a plurality of mounting holes arranged in a circumferential array for connecting the drone; by providing mounting holes, it is convenient to install the mounting base and the drone.

[0010] As a further description of the above technical solution: a sealing ring groove is provided on the upper surface of the mounting base, and a sealing gasket is installed inside the sealing ring groove. The sealing gasket is used to seal the water outlet of the UAV and the connecting pipe. By setting the sealing gasket, the sealing performance between the connecting pipe and the UAV can be enhanced when the mounting base is installed.

[0011] As a further description of the above technical solution: a first fireproof cover is fixedly installed between the mounting base and the connecting pipe, and the first fireproof cover covers the surface of the solenoid valve; by setting the first fireproof cover, the solenoid valve can be protected.

[0012] As a further description of the above technical solution: a second fireproof cover is fixedly installed on the outer wall of the connecting sleeve, and the second fireproof cover covers the outside of the electric push rod, rack and gear plate; by setting the second fireproof cover, the electric push rod, rack and gear plate can be protected.

[0013] As a further description of the above technical solution: an annular sealing ring is provided on the inner wall of the circular opening, and the annular sealing ring is used to seal the gap between the spray head and the circular opening; by setting the annular sealing ring, the gap between the spray head and the circular opening can be sealed to prevent water leakage.

[0014] As a further description of the above technical solution: the connecting sleeve and the connecting pipe are rotatably connected by a sealed bearing. A forward and reverse motor is fixedly installed on the outer wall of the connecting pipe. The output shaft of the forward and reverse motor extends to the bottom end of the first fireproof cover and is fixedly installed with a drive gear. A driven gear ring is fixedly installed on the surface of the connecting sleeve. The drive gear meshes with the driven gear ring. By setting up a forward and reverse motor, the drive gear is driven to rotate. Based on the meshing of the drive gear and the driven gear ring, the connecting sleeve can be driven to rotate, thereby further achieving the purpose of adjusting the angle of the spray head.

[0015] As a further description of the above technical solution: a limiting protrusion is fixedly installed at the bottom end of the connecting pipe, a limiting groove is opened on the inner wall of the connecting sleeve, and the limiting protrusion is inserted into the limiting groove. The limiting protrusion and the limiting groove are used to limit the horizontal rotation angle range of the connecting sleeve. By setting the limiting protrusion and the limiting groove, and by using the limiting protrusion inserted into the limiting groove, the rotation angle of the connecting sleeve can be limited, so as to avoid the electrical circuit failure of the electric push rod caused by excessive rotation angle.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] 1. Compared with existing technologies, this drone-based fire-fighting sprinkler head utilizes a mounting base to install the entire sprinkler structure on the mounting platform on the underside of the drone. The drone's water outlet is connected to an opening in a connecting pipe, allowing water to be transported through the pipe and sprayed out through the sprinkler head's nozzles for fire extinguishing. During operation, a temperature sensor monitors the temperature at the bottom of the mounting base. When the temperature exceeds a set safety value, a solenoid valve is activated, spraying water through branch pipes and atomizing nozzles to form a water curtain around the drone, providing safety protection. When the temperature at the bottom of the mounting base is low, the solenoid valve remains closed, using the drone's water for fire extinguishing, ensuring the normal operation of the fire-fighting process.

[0018] 2. Compared with existing technologies, the fire-fighting sprinkler head of this drone can drive the rack to move via an electric push rod when using the sprinkler head and sprinkler holes for fire-fighting operations. Based on the meshing of the rack and the toothed disc, it can drive the horizontal axis to deflect and adjust the angle of the sprinkler head, so as to meet the needs of fire-fighting operations in different environments and has strong applicability.

[0019] 3. Compared with existing technologies, this drone-based fire-extinguishing sprinkler head features mounting holes for easy installation between the mounting base and the drone; a sealing gasket enhances the seal between the connecting pipe and the drone during installation; a first fireproof cover protects the solenoid valve; a second fireproof cover protects the electric push rod, rack, and gear; and an annular sealing ring seals the gap between the sprinkler head and the round opening, preventing water leakage.

[0020] 4. Compared with existing technologies, the fire-extinguishing sprinkler head of this drone uses a forward and reverse motor to drive the rotation of the drive gear. Based on the meshing of the drive gear and the driven gear ring, the connecting sleeve can be rotated, thereby achieving the purpose of adjusting the angle of the sprinkler head. By setting a limiting protrusion and a limiting groove, the rotation angle of the connecting sleeve can be limited by the limiting protrusion inserted into the limiting groove, avoiding electrical circuit failure of the electric push rod caused by excessive rotation angle. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention from one perspective;

[0022] Figure 2 This is a two-dimensional structural schematic diagram of the present invention from a different perspective;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of this utility model in cross-section;

[0024] Figure 4 This is a side-sectional three-dimensional structural diagram of the second fireproof cover of this utility model;

[0025] Figure 5 for Figure 3 Enlarged structural diagram at point A in the middle.

[0026] The attached diagram is labeled as follows: 1. Mounting base; 2. Connecting pipe; 3. Spray head; 4. Spray hole; 5. Branch pipe; 6. Atomizing nozzle; 7. Solenoid valve; 8. Temperature sensor; 9. Connecting sleeve; 10. Horizontal shaft; 11. Electric push rod; 12. Rack; 13. Gear plate; 14. Mounting hole; 15. Sealing gasket; 16. First fireproof cover; 17. Second fireproof cover; 18. Annular sealing ring; 19. Forward and reverse motor; 20. Drive gear; 21. Driven gear ring; 22. Limiting protrusion; 23. Limiting groove. Detailed Implementation

[0027] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The fire extinguishing spray head for drones involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] Reference Figures 1 to 5 This utility model provides a fire extinguishing spray nozzle for drones, including a mounting base 1 for connecting and installing to the bottom of the drone. The surface of the mounting base 1 is provided with a plurality of mounting holes 14 arranged in a circumferential array for connecting the drone.

[0029] By setting mounting holes 14, bolts can be inserted into the mounting holes 14 to facilitate the installation of the mounting base 1 and the external drone.

[0030] A connecting pipe 2 is embedded at the bottom center axis of the mounting base 1.

[0031] A sealing ring groove is provided on the upper surface of the mounting base 1, and a sealing gasket 15 is installed inside the sealing ring groove. The sealing gasket 15 is used to seal the water outlet of the drone and the connecting pipe 2.

[0032] By setting the sealing gasket 15, the sealing between the connecting pipe 2 and the drone can be enhanced when the mounting base 1 is installed.

[0033] The outer wall of the connecting pipe 2 is provided with a protective component, and the bottom end of the connecting pipe 2 is provided with a spray head 3. The spray head 3 is spherical, and the surface of the spray head 3 is provided with spray holes 4. The surface of the spray head 3 is also provided with an angle adjustment component.

[0034] The protective components include branch pipes 5 that are uniformly embedded in the outer wall of the connecting pipe 2 in a circumferential array. An atomizing nozzle 6 is fixedly installed at the end of the branch pipe 5 away from the connecting pipe 2. A solenoid valve 7 is provided on the surface of the branch pipe 5. A temperature sensor 8 is fixedly installed at the bottom of the mounting base 1. Both the temperature sensor 8 and the solenoid valve 7 are electrically connected to the external drone.

[0035] It is worth noting that when the fire extinguishing sprinkler head of the drone is in use, the entire sprinkler head structure is installed on the mounting platform on the bottom side of the external drone using the mounting base 1, and the water outlet of the drone is connected to the opening on the connecting pipe 2. Water is transported through the connecting pipe 2, and the water is sprayed out through the spray hole 4 of the sprinkler head 3 to achieve fire extinguishing operation.

[0036] Furthermore, during the use of this nozzle, the temperature sensor 8 detects the temperature on the bottom side of the mounting base 1. When the temperature exceeds the set safety value, a signal is transmitted to the inside of the drone. Then, the drone itself controls and activates the solenoid valve 7, spraying water through the branch pipe 5 and the atomizing nozzle 6 to form a water curtain around the drone, achieving the effect of protecting the drone. When the temperature on the bottom side of the mounting base 1 is low, the solenoid valve 7 remains closed, and the water carried by the drone is used for fire extinguishing, ensuring the normal operation of the fire extinguishing work.

[0037] A first fireproof cover 16 is fixedly installed between the mounting base 1 and the connecting pipe 2, and the first fireproof cover 16 covers the surface of the solenoid valve 7.

[0038] By setting up the first fireproof cover 16, the solenoid valve 7 can be protected.

[0039] The angle adjustment assembly includes a connecting sleeve 9 at the bottom of the connecting pipe 2, a horizontal shaft 10 fixedly mounted on the surface of the spray head 3, the spray head 3 being rotatably mounted on the bottom of the connecting sleeve 9 via the horizontal shaft 10, a round opening corresponding to the bottom of the connecting sleeve 9, the water outlet of the spray hole 4 extending to the outside through the round opening, an electric push rod 11 fixedly mounted on the outer wall of the connecting sleeve 9, a rack 12 fixedly mounted on the telescopic end of the electric push rod 11, a gear plate 13 fixedly mounted on the surface of the horizontal shaft 10, and the rack 12 and the gear plate 13 meshing with each other.

[0040] The drone uses a fire-extinguishing sprinkler head. When using the sprinkler head 3 and sprinkler hole 4 for fire extinguishing operations, the electric push rod 11 drives the rack 12 to move. Based on the meshing of the rack 12 and the gear plate 13, it can drive the horizontal axis 10 to deflect, thereby adjusting the angle of the sprinkler head 3 to meet the needs of fire extinguishing operations in different environments, and has strong applicability.

[0041] A second fireproof cover 17 is fixedly installed on the outer wall of the connecting sleeve 9. The second fireproof cover 17 covers the outside of the electric push rod 11, the rack 12 and the gear plate 13.

[0042] By setting up a second fireproof cover 17, the electric push rod 11, rack 12 and gear plate 13 can be protected.

[0043] The connecting sleeve 9 and the connecting pipe 2 are rotatably connected by a sealed bearing. A forward and reverse motor 19 is fixedly installed on the outer wall of the connecting pipe 2. The output shaft of the forward and reverse motor 19 extends to the bottom end of the first fireproof cover 16 and is fixedly installed with a drive gear 20. A driven gear ring 21 is fixedly installed on the surface of the connecting sleeve 9. The drive gear 20 meshes with the driven gear ring 21.

[0044] It is worth further explaining that by setting up a forward and reverse motor 19, the forward and reverse motor 19 drives the drive gear 20 to rotate. Based on the meshing of the drive gear 20 and the driven gear ring 21, the connecting sleeve 9 can be driven to rotate, thereby further achieving the purpose of adjusting the angle of the spray head 3.

[0045] A limiting protrusion 22 is fixedly installed at the bottom end of the connecting pipe 2, and a limiting groove 23 is opened on the inner wall of the connecting sleeve 9. The limiting protrusion 22 is inserted into the limiting groove 23. The limiting protrusion 22 and the limiting groove 23 are used to limit the horizontal rotation angle range of the connecting sleeve 9.

[0046] It is worth noting that by setting the limiting protrusion 22 and the limiting groove 23, and by using the limiting protrusion 22 inserted into the limiting groove 23, the rotation angle of the connecting sleeve 9 can be limited, thus avoiding electrical circuit failure of the electric push rod 11 caused by excessive rotation angle.

[0047] An annular sealing ring 18 is fitted onto the inner wall of the round opening, which is used to seal the spray head 3 with the round opening.

[0048] By setting an annular sealing ring 18, the gap between the spray head 3 and the round opening can be sealed to prevent water leakage.

[0049] Finally, it should be noted that the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A fire-extinguishing sprinkler head for unmanned aerial vehicles (UAVs), comprising a mounting base (1) for connection and installation to the bottom of the UAV, characterized in that: A connecting pipe (2) is embedded at the bottom center axis of the mounting base (1). A protective component is provided on the outer wall of the connecting pipe (2). A spray head (3) is provided at the bottom of the connecting pipe (2). The spray head (3) is spherical. Spray holes (4) are opened on the surface of the spray head (3). An angle adjustment component is provided on the surface of the spray head (3). The protective component includes branch pipes (5) that are uniformly embedded in the outer wall of the connecting pipe (2) in a circumferential array. An atomizing nozzle (6) is fixedly installed at one end of the branch pipe (5) away from the connecting pipe (2). A solenoid valve (7) is provided on the surface of the branch pipe (5). A temperature sensor (8) is fixedly installed at the bottom of the mounting base (1). Both the temperature sensor (8) and the solenoid valve (7) are electrically connected to the external drone. The angle adjustment assembly includes a connecting sleeve (9) set at the bottom of the connecting pipe (2), a horizontal shaft (10) fixedly installed on the surface of the spray head (3), the spray head (3) is rotatably installed at the bottom of the connecting sleeve (9) via the horizontal shaft (10), the bottom of the connecting sleeve (9) is provided with a round opening corresponding to the spray head (3), the water outlet end of the spray hole (4) extends to the outside through the round opening, an electric push rod (11) is fixedly installed on the outer wall of the connecting sleeve (9), a rack (12) is fixedly installed on the telescopic end of the electric push rod (11), a gear plate (13) is fixedly installed on the surface of the horizontal shaft (10), and the rack (12) and the gear plate (13) mesh with each other.

2. The fire extinguishing sprinkler head for unmanned aerial vehicles according to claim 1, characterized in that: The surface of the mounting base (1) is provided with a number of mounting holes (14) arranged in a circular array for connecting to the UAV.

3. The fire-extinguishing sprinkler head for unmanned aerial vehicles according to claim 1, characterized in that: The upper surface of the mounting base (1) is provided with a sealing ring groove, and a sealing gasket (15) is installed inside the sealing ring groove. The sealing gasket (15) is used to seal the water outlet of the UAV and the connecting pipe (2).

4. A fire-extinguishing sprinkler head for unmanned aerial vehicles according to claim 1, characterized in that: A first fireproof cover (16) is fixedly installed between the mounting base (1) and the connecting pipe (2), and the first fireproof cover (16) covers the surface of the solenoid valve (7).

5. A fire-extinguishing sprinkler head for unmanned aerial vehicles according to claim 1, characterized in that: The outer wall of the connecting sleeve (9) is fixedly installed with a second fireproof cover (17), which covers the outside of the electric push rod (11), rack (12) and gear plate (13).

6. A fire-extinguishing sprinkler head for unmanned aerial vehicles according to claim 1, characterized in that: The inner wall of the round opening is fitted with an annular sealing ring (18), which is used to seal the spray head (3) and the round opening.

7. A fire-extinguishing sprinkler head for unmanned aerial vehicles according to claim 1, characterized in that: The connecting sleeve (9) and the connecting pipe (2) are rotatably connected by a sealed bearing. A forward and reverse motor (19) is fixedly installed on the outer wall of the connecting pipe (2). The output shaft of the forward and reverse motor (19) extends to the bottom end of the first fireproof cover (16) and is fixedly installed with a drive gear (20). A driven gear ring (21) is fixedly installed on the surface of the connecting sleeve (9). The drive gear (20) meshes with the driven gear ring (21).

8. A fire-extinguishing sprinkler head for unmanned aerial vehicles according to claim 1, characterized in that: A limiting protrusion (22) is fixedly installed at the bottom end of the connecting pipe (2), and a limiting groove (23) is opened on the inner wall of the connecting sleeve (9). The limiting protrusion (22) is inserted into the limiting groove (23). The limiting protrusion (22) and the limiting groove (23) are used to limit the horizontal rotation angle range of the connecting sleeve (9).

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