Plant protection unmanned aerial vehicle pesticide spraying device with real-time pesticide mixing function
By designing a precision mixing mechanism on agricultural drones, the automatic addition, mixing, and spraying of pesticides have been achieved, solving the problems of low spraying efficiency and accuracy in existing technologies and improving spraying efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG ACADEMY OF AGRI & RECLAMATION SCI
- Filing Date
- 2025-08-18
- Publication Date
- 2026-07-07
Smart Images

Figure CN224460962U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a plant protection drone spraying device, specifically a plant protection drone spraying device with real-time mixing function, belonging to the field of plant protection drone technology. Background Technology
[0002] Agricultural drones, also known as unmanned aerial vehicles, are unmanned aircraft used for the protection of agricultural and forestry plants. These drones consist of three parts: a flight platform, a navigation and flight control system, and a spraying mechanism. They can spray pesticides, seeds, and powders through ground remote control or navigation and flight control.
[0003] A spraying device for agricultural drones disclosed in Chinese Patent Application Publication CN220577496U includes a spraying drone body and an impact-resistant mechanism. The spraying drone body comprises a drone main body and a spraying section. The spraying section is mounted on the bottom of the drone main body. The impact-resistant mechanism includes an impact-resistant component and a mounting component. The impact-resistant component is welded to both ends of the bottom inner side of the mounting component, with its bottom end flush against the ground. The side wall of the mounting component is bolted to the side wall of the spraying section. This technical solution solves the problem that existing agricultural drone spraying devices directly contact the ground upon landing after spraying, thus generating impact force and preventing damage, thereby increasing the lifespan of the spraying device. However, this technical solution cannot add and mix pesticides in the spraying cartridge in real time. The drone must return to base before manual addition of pesticides to the cartridge, resulting in low precision and reduced spraying efficiency.
[0004] Therefore, a plant protection drone spraying device with real-time mixing function is proposed here. Utility Model Content
[0005] This invention proposes a plant protection drone spraying device with real-time mixing function to solve the problem in the prior art that it is not possible to add and mix pesticides in the spraying cylinder of the plant protection drone in real time.
[0006] This utility model is achieved through the following technical solution: a plant protection drone spraying device with real-time mixing function, including a drone body, and a precision mixing mechanism is provided above the drone body;
[0007] The precision mixing mechanism includes a mounting plate, the bottom surface of which is fixedly connected to the upper surface of the drone body. A mixing tank and two dosing tanks are fixedly connected to the upper surface of the mounting plate. Each dosing tank has a dosing pipe fixedly connected to its upper surface, and a locking plug is inserted inside each dosing pipe. Each dosing tank also has a delivery pipe fixedly connected to its upper surface. The output end of each delivery pipe is fixedly connected to a water pump. The bottom surface of each water pump is fixedly connected to the upper surface of the mixing tank. The output end of each water pump penetrates the mixing tank and extends into its interior. An ultrasonic flow meter is fixedly connected to the output end of each water pump. The bottom surface of each ultrasonic flow meter is fixedly connected to the upper surface of the mixing tank. An output pipe is fixedly connected to the bottom of the mixing tank. A gear pump is fixedly connected to the bottom end of the output pipe. The bottom surface of the gear pump is fixedly connected to the upper surface of the mounting plate.
[0008] The precision mixing mechanism is equipped with a stirring and mixing component inside, and an extended spraying component is provided below the precision mixing mechanism.
[0009] The mixing assembly includes two stirring motors. The bottom surface of each stirring motor is fixedly connected to the upper surface of the mounting plate. A stirring rod is fixedly connected to the output end of each stirring motor. The top end of each stirring rod penetrates the mixing tank and extends into the interior of the mixing tank. Equally spaced circumferentially arranged scraper plates and spiral fan blades are fixedly connected to the outer surface of each stirring rod. The bottom surface of each set of scraper plates is in contact with the inner bottom wall of the mixing tank. A liquid concentration meter is fixedly connected to the left side of the mixing tank. The detection end of the liquid concentration meter penetrates the mixing tank and extends into the interior of the mixing tank.
[0010] The extended spraying assembly includes an electric telescopic rod, the upper surface of which is fixedly connected to the bottom surface of the drone body, and a movable frame is fixedly connected to the telescopic end of the electric telescopic rod.
[0011] The output end of the gear pump is fixedly connected to a spray pipe. The bottom end of the spray pipe passes through the mounting plate and the main body of the drone in sequence and extends to the bottom of the main body of the drone. The spray pipe is snapped into the inside of the mobile frame. The bottom end of the spray pipe is fixedly connected to a spray nozzle.
[0012] The outer surface of the drone body is fixedly connected with extended wings arranged in a circular pattern at equal intervals, and each extended wing is fixedly connected with a rotating fan blade at its output end.
[0013] The bottom surface of the drone body is fixedly connected to two sets of support legs, and the bottom end of each set of support legs is fixedly connected to a support base plate.
[0014] This utility model provides a plant protection drone spraying device with real-time pesticide mixing function, which has the following beneficial effects:
[0015] 1. This plant protection drone spraying device with real-time mixing function can use the mounting plate on the main body of the drone to install the mixing tank and two dosing tanks onto the main body of the drone. By manually pulling out the plug in the dosing pipe, it is convenient to add aqueous solution and solution pesticide to the two dosing tanks. The water pump provides power to draw the aqueous solution and solution pesticide from the two dosing tanks into the mixing tank. The flow rate of the aqueous solution and solution pesticide is measured by an ultrasonic flow meter, which facilitates automatic and precise mixing of pesticide in the mixing tank, thereby improving the spraying efficiency and accuracy of the plant protection drone spraying device.
[0016] 2. This plant protection drone spraying device with real-time mixing function can drive the stirring rod to rotate via a stirring motor, thereby driving the scraper and spiral fan blades to rotate, which can facilitate the mixing of the pesticide in the mixing tank, thus enabling automatic real-time mixing. Furthermore, a liquid concentration meter is used to detect the pesticide concentration in the mixing tank, which further improves the spraying efficiency and accuracy of the plant protection drone spraying device. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the main body of the UAV of this utility model;
[0018] Figure 2 This is a bottom view of the spray nozzle structure of this utility model;
[0019] Figure 3 This is a cross-sectional view of the mixing box of this utility model;
[0020] Figure 4 This is a schematic diagram of the structure of the spiral fan blade of this utility model.
[0021] Explanation of reference numerals in the attached figures
[0022] 1. The main body of the drone;
[0023] 2. Precision mixing mechanism; 201. Mounting plate; 202. Mixing tank; 203. Dosing tank; 204. Dosing pipe; 205. Snap-fit plug; 206. Delivery pipe; 207. Water pump; 208. Ultrasonic flow meter; 209. Output pipe; 210. Gear pump;
[0024] 3. Mixing and stirring components; 301. Stirring motor; 302. Stirring rod; 303. Spiral fan blades; 304. Scraper; 305. Liquid concentration meter;
[0025] 4. Extended spraying assembly; 401. Electric telescopic pole; 402. Movable frame; 403. Spraying pipe; 404. Spraying nozzle;
[0026] 5. Extended wings; 6. Rotating fan blades; 7. Support legs; 8. Support base plate. Detailed Implementation
[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.
[0028] Please see Figures 1-4 This utility model provides a plant protection drone spraying device with real-time mixing function, including a drone body 1, a precision mixing mechanism 2 is provided on the top of the drone body 1, and an extended wing 5 arranged in a circular pattern at equal intervals is fixedly connected to the outer surface of the drone body 1. The output end of each extended wing 5 is fixedly connected to a rotating fan blade 6. By using the multiple extended wings 5 fixed to the outside of the drone body 1, the rotating fan blade 6 can be rotated at high speed, thereby enabling the drone body 1 to fly.
[0029] Please refer to this carefully. Figure 1 , Figure 2 and Figure 3The precision mixing mechanism 2 includes a mounting plate 201, the bottom surface of which is fixedly connected to the upper surface of the UAV body 1. A mixing tank 202 and two dosing tanks 203 are fixedly connected to the upper surface of the mounting plate 201. Each dosing tank 203 has a dosing pipe 204 fixedly connected to its upper surface, and each dosing pipe 204 has a locking plug 205 inside. Each dosing tank 203 also has a delivery pipe 206 fixedly connected to its upper surface, and the output end of each delivery pipe 206 is fixedly... A water pump 207 is connected to the mixing tank 202. The water pump 207 is equipped with one inlet and one outlet nozzle, and a drain nozzle. It continuously creates a vacuum or negative pressure at the inlet and a slight positive pressure at the outlet. The model of the water pump 207 is BJ10G-L. The bottom surface of each water pump 207 is fixedly connected to the upper surface of the mixing tank 202. The output end of each water pump 207 penetrates through the mixing tank 202 and extends into its interior. The output end of each water pump 207 is fixedly connected to the mixing tank 202. An ultrasonic flow meter 208 is included. The ultrasonic flow meter 208 is an instrument that measures flow rate by detecting the effect of fluid flow on an ultrasonic beam. The model of the ultrasonic flow meter 208 is FUS080. The bottom surface of each ultrasonic flow meter 208 is fixedly connected to the upper surface of the mixing tank 202. The bottom surface of the mixing tank 202 is fixedly connected to an output pipe 209. The bottom end of the output pipe 209 is fixedly connected to a gear pump 210. The gear pump 210 is a rotary pump that delivers liquid or pressurizes it by relying on the change and movement of the working volume formed between the pump cylinder and the meshing gear. The model of the gear pump 210 is CBN-E300. The bottom surface of the gear pump 210 is fixedly connected to the upper surface of the mounting plate 201. The bottom surface of the drone body 1 is fixedly connected to two sets of support legs 7. The bottom end of each set of support legs 7 is fixedly connected to a support base plate 8. The two sets of support legs 7 and the support base plate 8 form the support structure of the device, thereby enabling the agricultural drone spraying device with real-time mixing function to be stably supported in the required position.
[0030] Please refer to this carefully. Figure 1 , Figure 3 and Figure 4The precision mixing mechanism 2 has a mixing component 3 inside, and an extension spraying component 4 is located below it. The mixing component 3 includes two stirring motors 301. The bottom surface of each stirring motor 301 is fixedly connected to the upper surface of the mounting plate 201. The output end of each stirring motor 301 is fixedly connected to a stirring rod 302. The top end of each stirring rod 302 penetrates the mixing box 202 and extends into the interior of the mixing box 202. The outer surface of each stirring rod 302 is fixedly connected to scrapers arranged circumferentially at equal intervals. 304 and spiral fan blades 303, the bottom surface of each set of scraper plates 304 is in contact with the inner bottom wall of the mixing tank 202. A liquid concentration meter 305 is fixedly connected to the left side of the mixing tank 202. The liquid concentration meter 305 is an instrument for measuring the liquid concentration value. The model of the liquid concentration meter 305 is DH-300L. The detection end of the liquid concentration meter 305 passes through the mixing tank 202 and extends into the interior of the mixing tank 202. Through the liquid concentration meter 305, the concentration of the agent in the mixing tank 202 can be detected, so that the mixing tank 202 contains a precise concentration of agent.
[0031] Please refer to this carefully. Figure 2 The extended spraying assembly 4 includes an electric telescopic rod 401. The upper surface of the electric telescopic rod 401 is fixedly connected to the bottom surface of the drone body 1. The telescopic end of the electric telescopic rod 401 is fixedly connected to a movable frame 402. The movable frame 402 can be moved up and down by driving the electric telescopic rod 401, which can conveniently adjust the spraying height of the plant protection drone spraying device, thereby facilitating the use of the plant protection drone spraying device.
[0032] Please refer to this carefully. Figure 2 The output end of the gear pump 210 is fixedly connected to the spray pipe 403. The bottom end of the spray pipe 403 passes through the mounting plate 201 and the drone body 1 and extends to the bottom of the drone body 1. The spray pipe 403 is snapped into the inside of the mobile frame 402. The bottom end of the spray pipe 403 is fixedly connected to the spray nozzle 404. The high-pressure agent solution is delivered by the gear pump 210, so that the high-pressure agent solution can be delivered to the spray nozzle 404 through the spray pipe 403, so that the agent can be sprayed outward using the spray nozzle 404.
[0033] In use, the following steps are taken: First, connect the drone body 1, water pump 207, gear pump 210, stirring motor 301, and electric telescopic rod 401 to the power supply. When using the plant protection drone spraying device with real-time mixing function to spray plants, first, manually use the support structure composed of the fixed support legs 7 and support base plate 8 under the drone body 1 to stably support the plant protection drone spraying device on the horizontal ground. Then, manually pull the locking plug 205 inside the liquid filling pipe 204 to open the channels between the two liquid filling pipes 204 and the two dosing tanks 203. Then, manually transport the liquid and pesticide into the two dosing tanks 203 through the liquid filling pipes 204 respectively, and cover the liquid filling pipes 204 with the locking plug 205 to reduce the output of solution from the liquid filling pipes 204, so as to facilitate the real-time mixing function of the plant protection drone spraying device.
[0034] Next, by manually controlling the power supply of the main body 1 of the drone, multiple rotating fan blades 6 on the extended wings 5 can be driven to rotate, enabling the agricultural drone spraying device to fly in the sky. During flight, the power supply of the water pump 207 can be controlled, and the water pump 207 can be used to transport the liquid and pesticide in the two dosing tanks 203 through the delivery pipe 206 to the mixing tank 202 for mixing. The ultrasonic flow meter 208 is used to detect the flow rate of the solution passing through the water pump 207, so as to facilitate the precise and quantitative delivery of water in the mixing tank 202. The agent and pesticide are mixed. By controlling the power supply of the stirring motor 301, the stirring motor 301 can drive the stirring rod 302 to rotate inside the mixing tank 202. Since the spiral fan blade 303 and scraper 304 are fixed outside the stirring rod 302, the spiral fan blade 303 and scraper 304 can be used to uniformly mix the pesticide in the mixing tank 202. The liquid concentration meter 305 fixed on one side of the mixing tank 202 can detect the concentration of the uniformly mixed pesticide in the mixing tank 202, thereby improving the pesticide mixing accuracy of the plant protection drone spraying device.
[0035] Then, using the power provided by the gear pump 210, the pesticide in the mixing tank 202 is transported to the spraying pipe 403 through the output pipe 209, and the high-pressure pesticide is sprayed outward through the spray nozzle 404. The electric telescopic rod 401 drives the moving frame 402 to move downward, which can easily drive the spray nozzle 404 to move downward, so as to facilitate the use of the plant protection drone spraying device to spray pesticides on plants.
[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A plant protection drone spraying device with real-time mixing function, comprising a drone body (1), characterized in that: A precision drug mixing mechanism (2) is provided on the top of the main body (1) of the drone. The precision mixing mechanism (2) includes a mounting plate (201), the bottom surface of which is fixedly connected to the upper surface of the UAV body (1). A mixing tank (202) and two dosing tanks (203) are fixedly connected to the upper surface of the mounting plate (201). Each dosing tank (203) has a dosing pipe (204) fixedly connected to its upper surface. Each dosing pipe (204) has a locking plug (205) inside. Each dosing tank (203) has a conveying pipe (206) fixedly connected to its upper surface. Each conveying pipe (206) has a water pump (207) fixedly connected to its output end. Each water pump (207)... The bottom surface of each of the pumps (207) is fixedly connected to the upper surface of the mixing tank (202). The output end of each pump (207) passes through the mixing tank (202) and extends into the interior of the mixing tank (202). The output end of each pump (207) is fixedly connected to an ultrasonic flow meter (208). The bottom surface of each ultrasonic flow meter (208) is fixedly connected to the upper surface of the mixing tank (202). The bottom surface of the mixing tank (202) is fixedly connected to an output pipe (209). The bottom end of the output pipe (209) is fixedly connected to a gear pump (210). The bottom surface of the gear pump (210) is fixedly connected to the upper surface of the mounting plate (201). The precision mixing mechanism (2) is equipped with a stirring and mixing component (3) inside, and an extension spraying component (4) is provided below the precision mixing mechanism (2).
2. The agricultural drone spraying device with real-time mixing function according to claim 1, characterized in that: The mixing assembly (3) includes two stirring motors (301). The bottom surface of each stirring motor (301) is fixedly connected to the upper surface of the mounting plate (201). The output end of each stirring motor (301) is fixedly connected to a stirring rod (302). The top end of each stirring rod (302) penetrates the mixing tank (202) and extends into the interior of the mixing tank (202). The outer surface of each stirring rod (302) is fixedly connected to scraper plates (304) and spiral fan blades (303) arranged in a circular pattern at equal intervals. The bottom surface of each set of scraper plates (304) is in contact with the inner bottom wall of the mixing tank (202). A liquid concentration meter (305) is fixedly connected to the left side of the mixing tank (202). The detection end of the liquid concentration meter (305) penetrates the mixing tank (202) and extends into the interior of the mixing tank (202).
3. The agricultural drone spraying device with real-time mixing function according to claim 1, characterized in that: The extended spraying assembly (4) includes an electric telescopic rod (401), the upper surface of which is fixedly connected to the bottom surface of the UAV body (1), and a movable frame (402) is fixedly connected to the telescopic end of the electric telescopic rod (401).
4. The agricultural drone spraying device with real-time mixing function according to claim 3, characterized in that: The output end of the gear pump (210) is fixedly connected to a spray pipe (403). The bottom end of the spray pipe (403) passes through the mounting plate (201) and the drone body (1) in sequence and extends to the bottom of the drone body (1). The spray pipe (403) is snapped into the inside of the mobile frame (402). The bottom end of the spray pipe (403) is fixedly connected to a spray nozzle (404).
5. A plant protection drone spraying device with real-time mixing function according to claim 1, characterized in that: The outer surface of the main body (1) of the UAV is fixedly connected with extended wings (5) arranged in a circular pattern at equal intervals, and each of the extended wings (5) is fixedly connected with a rotating fan blade (6) at its output end.
6. A plant protection drone spraying device with real-time mixing function according to claim 1, characterized in that: The bottom surface of the main body (1) of the drone is fixedly connected to two sets of support legs (7), and the bottom end of each set of support legs (7) is fixedly connected to a support base plate (8).