Centrifugal spray head for unmanned aerial vehicle

By designing a centrifugal nozzle for drones, and combining nozzle rotation with an atomizer and guide hood, the problem of pesticide drift during drone spraying was solved, achieving wider coverage and more efficient application.

CN223931642UActive Publication Date: 2026-02-24ZHEJIANG WENXIN MECHANICAL&ELECTRICAL CO LTD
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Patent Information

Application Number
CN202520210173.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-10
Publication Date
2026-02-24
Estimated Expiration
2035-02-10

AI Technical Summary

Technical Problem

When using drones to spray pesticides, the pesticides tend to drift in the air, making it difficult to ensure coverage.

Method used

Design a centrifugal nozzle for drones that uses a rotating nozzle and motor drive to centrifuge and eject the liquid medicine, and combines the design of an atomizer and a guide shroud to ensure uniform distribution and diffusion of the liquid medicine.

Benefits of technology

It increases the spraying range and coverage of the pesticide solution, reduces drift, and improves pesticide utilization and application efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of unmanned aerial vehicles, in particular to a centrifugal sprayer for an unmanned aerial vehicle, which comprises a barrel, a water inlet channel is arranged in the barrel, a hose is arranged in the water inlet channel, one end of the hose is used for extending out of the water inlet channel to be connected with a water pipe, and a nozzle for spraying liquid medicine is arranged at the other end of the hose. The hose is used for introducing liquid medicine into the nozzle, the nozzle is rotationally connected with the barrel, a motor is further arranged in the barrel and fixedly connected with the barrel, a rotating shaft of the motor is fixedly connected with the nozzle, and a plurality of atomizers used for atomizing the sprayed liquid medicine are arranged on the nozzle. The nozzle is rotationally connected with the barrel, the motor drives the nozzle to rotate, and the motor can rotate the nozzle, so that the liquid medicine is centrifugally thrown out, the liquid medicine can be sprayed uniformly, and the coverage range is wider. The atomizer further improves the atomization effect of the liquid medicine, so that the liquid medicine is finer and easy to diffuse, and the medicine utilization rate and the treatment efficiency are improved.
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Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and in particular to a centrifugal nozzle for UAVs. Background Technology

[0002] With the continuous development of drone technology, drones are being used in a wider range of civilian fields, including urban management, agriculture, geology, meteorology, power, disaster relief, and video shooting.

[0003] In agriculture, drones typically carry pesticide canisters to spray pesticides. When spraying, the drone moves along a prescribed trajectory to complete the spraying of the entire farmland. Under current technology, drones usually atomize and spray pesticides. During aerial spraying, pesticides are easily dispersed in the air, making it difficult to ensure pesticide coverage. Utility Model Content

[0004] To address the problem that existing drones typically atomize and spray pesticides, causing pesticides to easily disperse in the air during flight and making it difficult to ensure pesticide coverage, this application provides a centrifugal nozzle for drones, with the specific solution as follows.

[0005] A centrifugal nozzle for drones includes a cylindrical body with a mounting bracket on its outer side. A flexible hose is mounted on the mounting bracket, with one end of the hose extending into a water inlet channel and connecting to a water pipe. The other end of the hose is equipped with a nozzle for spraying liquid medicine. The hose is used to allow liquid medicine to flow into the nozzle. The nozzle is rotatably connected to the cylindrical body. A motor is also installed inside the cylindrical body and is fixedly connected to the cylindrical body. The motor's shaft is fixedly connected to the nozzle. The nozzle is equipped with multiple atomizers for atomizing and spraying the liquid medicine.

[0006] By adopting the above technical solutions, the hose design allows the liquid medicine to smoothly enter the nozzle from an external water source, achieving continuous spraying. Simultaneously, the rotating connection between the nozzle and the cylinder, along with the motor-driven nozzle rotation, centrifugally ejects the liquid medicine, ensuring even distribution and wider coverage. The presence of the atomizer further enhances the atomization effect, making the liquid medicine finer and easier to diffuse, thereby improving drug utilization and treatment efficiency.

[0007] Optionally, the cylinder is also provided with a connector, which is fixedly connected to the cylinder and rotatably connected to the nozzle. The connector is fixedly connected to the cylinder, the motor shaft passes through the connector and is connected to the nozzle, and the hose is connected to the connector and the liquid medicine is introduced into the connector. The interior of the connector is in communication with the nozzle.

[0008] By adopting the above technical solution, the connector is fixedly connected to the cylinder body and connected to the hose through the connector. The connector will not rotate with the nozzle, while the nozzle can rotate centrifugally, which will not drive the hose to rotate. This reduces the situation where the hose rotates with the nozzle and reduces the impact of the nozzle on the hose.

[0009] Optionally, a guide cover is provided on the cylinder corresponding to the nozzle position. The guide cover is fixedly connected to the nozzle and is arranged around the nozzle. A gap is left between the nozzle and the guide cover for the liquid to be sprayed out. The atomizer is arranged facing the guide cover.

[0010] By adopting the above technical solutions, the fixed connection and surrounding arrangement between the guide cover and the nozzle ensures the uniform distribution of the liquid, which can further improve the spraying range of the liquid, and the gaps left ensure that the liquid can be sprayed out smoothly.

[0011] Optionally, the guide cover is arc-shaped, the guide cover is inclined, and the side of the guide cover closer to the nozzle is higher than the side of the original nozzle.

[0012] By adopting the above technical solutions, the arc shape and inclined setting of the guide cover allow for more uniform guidance of the sprayed liquid, thereby improving the atomization effect and reducing splashing and waste. Simultaneously, the side of the guide cover closer to the nozzle is higher than the side farther from the nozzle, further enhancing the diffusion range of the liquid in the air, enabling the liquid to cover the target area more evenly and improving application efficiency and effectiveness.

[0013] Optionally, the nozzle is provided with a mounting part facing the guide cover, the mounting part is integrally provided with the nozzle, and the atomizer is fixedly provided on the mounting part.

[0014] By adopting the above technical solution, the mounting part on the nozzle is integrated with the nozzle, making the structure more stable and reliable, and avoiding loosening problems caused by welding or bonding. At the same time, the atomizer is fixedly mounted on the mounting part, ensuring the accuracy of the atomizer's position, improving the uniformity and stability of the liquid atomization, thereby enhancing the spraying effect and efficiency.

[0015] Optionally, the mounting part is provided with a mounting slope, which is set along the angle of the guide cover, and the atomizer is disposed on the mounting slope.

[0016] By adopting the above technical solutions, the inclined installation design allows the atomizer to better fit the angle of the guide shroud, thereby ensuring more uniform and concentrated spraying of the liquid medicine, improving the efficiency and effectiveness of atomization. At the same time, this design also reduces liquid medicine waste and improves drug utilization.

[0017] Optionally, it also includes a rotating frame, wherein the cylinder is provided with a rotating rod corresponding to the rotating frame, the rotating rod is fixedly connected to the cylinder, and the rotating rod is rotatably connected to the rotating frame.

[0018] By adopting the above technical solution, multi-angle adjustment of the centrifugal nozzle is achieved. Specifically, by adding a rotating frame and a matching rotating rod, the entire nozzle assembly can rotate freely within a certain range, making it convenient for users to adjust the spray direction according to different needs. In addition, this design also improves the operational flexibility of the equipment and reduces the usage limitations caused by a fixed position.

[0019] Optionally, the rotating frame is provided with a locking nut, which is threadedly connected to the rotating rod and can abut against the rotating frame.

[0020] By adopting the above technical solution, the locking nut on the rotating frame is threadedly connected to the rotating rod, allowing the rotating frame to be fixed in a specific position when needed, preventing unnecessary movement or rotation due to external factors, thereby ensuring the working stability of the nozzle. At the same time, when locking is not required, the position of the rotating frame can be easily adjusted by loosening the locking nut, improving flexibility and convenience of use.

[0021] In summary, this application has at least the following beneficial effects:

[0022] 1. This application solves the problem that in the prior art, drones typically atomize and spray pesticides, and the pesticides tend to drift in the air during flight spraying, making it difficult to ensure the coverage of pesticides. This application improves the coverage of pesticides by setting the nozzle to rotate, thereby throwing the atomized liquid at the nozzle out by centrifugation.

[0023] 2. This application also provides a rotating bracket for the nozzle, which can be rotated and adjusted on the drone and locked by a locking nut, further improving the flexibility of the nozzle during use. The angle can be adjusted according to needs, thereby further improving the spraying effect. Attached Figure Description

[0024] Figure 1 This is a front view of this embodiment.

[0025] Figure 2 This is a cross-sectional view of this embodiment.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Cylinder body; 11. Mounting bracket; 12. Hoses; 13. Motor; 14. Connector; 15. Guide cover; 16. Rotating rod;

[0028] 2. Nozzle; 21. Atomizer; 22. Mounting part; 221. Mounting slope;

[0029] 3. Rotating bracket; 31. Locking nut. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] A centrifugal nozzle for drones, such as Figure 1 and Figure 2 As shown, the device includes a cylindrical body with a mounting bracket on its outer side. A flexible hose is mounted on the bracket, with one end extending into a water inlet channel and connecting to a water pipe. The other end of the hose has a nozzle for spraying the pesticide solution. The hose allows the pesticide solution to flow into the nozzle, which is rotatably connected to the cylindrical body. A motor is also housed inside the cylindrical body and fixedly connected to it. The motor's shaft is fixedly connected to the nozzle, which has multiple atomizers for atomizing the pesticide solution. In practice, a water pump supplies the pesticide solution through the hose, pressurizing the solution to further expand the spraying area.

[0032] like Figure 1 and Figure 2 As shown, the cylinder is also equipped with a connector, which is fixedly connected to the cylinder and rotatably connected to the nozzle. The connector is fixedly connected to the cylinder, and the motor shaft passes through the connector and connects to the nozzle. The hose is connected to the connector and the liquid medicine flows through the connector. The inside of the connector is in communication with the nozzle. In specific implementation, the hose is connected to the connector on the side of the cylinder. The connector and the hose do not rotate with the rotation of the nozzle, so the hose is not affected by rotation, and the liquid medicine can flow into the inside of the nozzle through the connector.

[0033] like Figure 1 and Figure 2 As shown, a guide shield is installed on the cylinder corresponding to the nozzle position. The guide shield is fixedly connected to the nozzle and surrounds the nozzle. A gap is left between the nozzle and the guide shield for the liquid to be sprayed out. The atomizer faces the guide shield. The guide shield is arc-shaped and inclined, with the side of the guide shield closer to the nozzle higher than the side of the nozzle. In actual implementation, the liquid is delivered along the guide shield and then sprayed outwards under the guidance of the guide shield, improving the coverage of the liquid spray.

[0034] like Figure 1 and Figure 2As shown, a mounting part is provided on the nozzle facing the guide shroud, and the mounting part is integrally formed with the nozzle. The atomizer is fixedly mounted on the mounting part. The mounting part is provided with a mounting slope, which is set along the angle of the guide shroud, and the atomizer is mounted on the mounting slope. In specific implementation, the mounting slope is set to correspond to the angle of the guide shroud, so that when the liquid is sprayed, it can be sprayed along the guide shroud, thereby further expanding the spray range of the liquid.

[0035] like Figure 1 and Figure 2 As shown, it also includes a rotating frame, with a rotating rod corresponding to the rotating frame on the cylinder body. The rotating rod is fixedly connected to the cylinder body and rotatably connected to the rotating frame. A locking nut is provided on the rotating frame, and the locking nut is threadedly connected to the rotating rod, allowing it to abut against the rotating frame. In practical implementation, the rotating frame is fixedly connected to the drone, and the position of the cylinder body can be adjusted via the rotating frame, further improving its versatility.

[0036] Working principle: The centrifugal rotating nozzle sprays the pesticide solution by swinging it out, which can increase the spray range and thus increase the coverage of the pesticide.

[0037] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A centrifugal nozzle for unmanned aerial vehicles, characterized in that: The device includes a cylindrical body, an outer mounting bracket on which a flexible hose is mounted. One end of the hose extends into a water inlet channel and connects to a water pipe, while the other end is fitted with a nozzle for spraying liquid medicine. The hose allows liquid medicine to be introduced into the nozzle. The nozzle is rotatably connected to the cylindrical body. A motor is also housed inside the cylindrical body and is fixedly connected to the cylindrical body. The motor's shaft is fixedly connected to the nozzle. The nozzle is equipped with multiple atomizers for atomizing and spraying the liquid medicine.

2. A centrifugal nozzle for a drone according to claim 1, characterized in that: The cylinder is also provided with a connector, which is fixedly connected to the cylinder and rotatably connected to the nozzle. The connector is fixedly connected to the cylinder, the motor shaft passes through the connector and is connected to the nozzle, and the hose is connected to the connector and the liquid medicine is introduced into the connector. The inside of the connector is in communication with the nozzle.

3. A centrifugal nozzle for a drone according to claim 1, characterized in that: A guide cover is provided on the cylinder corresponding to the nozzle position. The guide cover is fixedly connected to the nozzle and surrounds the nozzle. A gap is left between the nozzle and the guide cover for the liquid to be sprayed out. The atomizer is positioned facing the guide cover.

4. A centrifugal nozzle for a drone according to claim 3, characterized in that: The guide cover is arc-shaped and inclined, with the side of the guide cover closer to the nozzle higher than the side of the original nozzle.

5. A centrifugal nozzle for a drone according to claim 4, characterized in that: The nozzle has a mounting part facing the guide cover. The mounting part is integrally formed with the nozzle, and the atomizer is fixedly mounted on the mounting part.

6. A centrifugal nozzle for a drone according to claim 5, characterized in that: The mounting part is provided with a mounting slope, which is set along the angle of the guide cover, and the atomizer is set on the mounting slope.

7. A centrifugal nozzle for a drone according to claim 1, characterized in that: It also includes a rotating frame, and the cylinder is provided with a rotating rod corresponding to the rotating frame. The rotating rod is fixedly connected to the cylinder and rotatably connected to the rotating frame.

8. A centrifugal nozzle for a drone according to claim 7, characterized in that: The rotating frame is equipped with a locking nut, which is threadedly connected to the rotating rod and can abut against the rotating frame.