Agricultural unmanned aerial vehicle pesticide and fertilizer mixing device
By combining pressure sensors, weighing plates, liquid level sensors, and electric valves, along with an impact mechanism and stirring rod, the automatic mixing of fertilizers and precipitated fertilizers in agricultural drone-based pesticide and fertilizer mixing devices has been achieved, solving the problems of cumbersome operation and uneven mixing in existing devices.
Patent Information
- Application Number
- CN202520290681.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-24
AI Technical Summary
Existing agricultural drone fertilizer mixing devices lack automatic mixing functions, resulting in cumbersome operation and uneven mixing, especially the inability to fully agitate the fertilizer that has settled at the bottom.
The system employs a combination of pressure sensors, weighing plates, level sensors, and electric valves to achieve automatic dispensing; combined with an impact mechanism, water pump, and stirring rod, it uses water flow impact and stirring to achieve the refloating and mixing of settled fertilizer.
It enables automatic quantitative mixing of pesticides and fertilizers, ensuring uniform mixing, solving the problem of stirring up fertilizers that sink to the bottom, and improving operational efficiency and mixing effect.
Smart Images

Figure CN223887874U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural equipment technology, specifically to an agricultural drone fertilizer and pesticide mixing device. Background Technology
[0002] Agricultural drones are unmanned aerial vehicles used in the agricultural field. They can fly automatically by ground remote control or preset programs and carry various agricultural operation equipment. When agricultural drones spray pesticides and fertilizers, a pesticide and fertilizer mixing device is required to mix and adjust the pesticides and fertilizers.
[0003] A search revealed that the patent number CN221333854U, entitled "Utility Model of a Water-Fertilizer Integrated Mixing Device," includes a housing. Research and analysis revealed that although it can achieve advantages such as continuous processing during use, it also has the following disadvantages to a certain extent.
[0004] For example, the lack of automatic mixing function means that pesticides and fertilizers need to be added manually, requiring separate measurement and addition each time. This process is cumbersome and consumes a lot of time and manpower. Furthermore, the lack of water flow impact function means that due to factors such as fertilizer density and particle size, some fertilizers tend to sink to the bottom. Without water flow impact function, these sunken fertilizers cannot be stirred up in time to mix thoroughly with the pesticides, resulting in uneven mixing. To solve the above technical problems, we have designed an agricultural drone pesticide and fertilizer mixing device. Utility Model Content
[0005] The purpose of this utility model is to provide an agricultural drone-based pesticide and fertilizer mixing device, which has the advantages of automatic mixing and water flow impact function. It solves the problems of existing mixing devices that cannot automatically mix pesticides and fertilizers during use, and cannot fully mix and agitate fertilizers that have settled to the bottom.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an agricultural drone fertilizer and pesticide mixing device, comprising a cylinder, a cover plate bolted to the top of the cylinder, pressure sensors bolted to the front and rear sides of the left side of the top of the cover plate, a weighing plate bolted to the top of the pressure sensors, a material box riveted to the opposite side of the weighing plate, a liquid tank fixedly connected through the right side of the top of the cover plate, a liquid level sensor fixedly connected through the right side of the top of the liquid tank, electric valves connected to the bottom of both the material box and the liquid tank, a servo motor bolted to the top of the cover plate, the output end of the servo motor passing through the cover plate and bolted to a stirring rod, an impact mechanism bolted to the right side of the cylinder, the impact mechanism comprising a first water pump, the outlet pipe of the first water pump connected to a water supply pipe, a second water pump bolted to the left side of the cylinder, the outlet pipe of the second water pump connected to a conveying pipe.
[0007] Preferably, the bottom end of the water supply pipe is connected to a distribution pipe, the left side of the distribution pipe is connected to a rectangular pipe, the top of the rectangular pipe is connected to a nozzle, the top end of the nozzle penetrates into the inner cavity of the cylinder, the inlet pipe of the first water pump is connected to the cylinder, and the number of nozzles is several.
[0008] Preferably, the top of the liquid tank and the top of the material tank are both connected to a feed pipe, and a liquid level window is embedded in the front side of the cylinder.
[0009] Preferably, the inlet pipe of the second water pump is connected to a pumping pipe, and the bottom end of the pumping pipe is connected to the bottom of the left side of the cylinder.
[0010] Preferably, the bottom of the inner cavity of the material box is connected to a funnel, and the top of the electric valve on the left extends through the inner cavity of the material box and is connected to the funnel.
[0011] Preferably, a water inlet pipe is connected to the front side of the top of the cylinder, and support legs are riveted to the four corners of the bottom of the cylinder.
[0012] Preferably, a controller is bolted to the front side of the cylinder. The output of the controller is unidirectionally electrically connected to the servo motor, the first water pump, the second water pump, and the electric valve, respectively. The controller is bidirectionally electrically connected to the pressure sensor and the liquid level sensor, respectively.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] 1. This utility model, through the cooperation of a pressure sensor, weighing plate, material bin, liquid tank, liquid level sensor, and electric valve, has the advantage of automatic dispensing function. An appropriate amount of clean water is added to the inner cavity of the cylinder through the water inlet pipe. Then, the controller controls the electric valve on the left to open, and the electric valve on the left discharges the granular fertilizer inside the material bin into the inner cavity of the cylinder. The pressure sensor monitors the discharge amount in real time. Then, the controller controls the electric valve on the right to open, and discharges the agent into the inner cavity of the cylinder. The liquid level sensor monitors the liquid level of the agent in real time, thereby completing the quantitative dispensing operation.
[0015] 2. This utility model has the advantage of water flow impact function through the cooperation of impact mechanism, first water pump and water supply pipe. When fertilizer is settling, the controller controls the first water pump to operate. The first water pump draws fertilizer liquid from inside the cylinder and then transports the fertilizer liquid to the distribution pipe. The distribution pipe transports the fertilizer liquid to the rectangular pipe. The rectangular pipe transports the fertilizer liquid to the nozzle. The nozzle sprays the fertilizer liquid at high speed, so that the fertilizer settled at the bottom floats up again. Then it is mixed again by the stirring rod. Attached Figure Description
[0016] Figure 1 This is a three-dimensional view of the structure of this utility model;
[0017] Figure 2 This is a three-dimensional sectional view of the cylindrical structure of this utility model;
[0018] Figure 3 This is a three-dimensional sectional view of the material box structure of this utility model;
[0019] Figure 4 This is a partial three-dimensional view of the structure of this utility model;
[0020] Figure 5 This is a three-dimensional bottom view of the material box structure of this utility model.
[0021] In the diagram: 1. Cylinder; 2. Cover plate; 3. Pressure sensor; 4. Weighing plate; 5. Material bin; 6. Liquid tank; 7. Liquid level sensor; 8. Electric valve; 9. Servo motor; 10. Stirring rod; 11. Impact mechanism; 12. First water pump; 13. Water supply pipe; 14. Second water pump; 15. Conveying pipe; 16. Distribution pipe; 17. Rectangular tube; 18. Nozzle; 19. Feed pipe; 20. Pumping pipe; 21. Funnel; 22. Water supply pipe; 23. Controller. Detailed Implementation
[0022] Please see Figures 1-5A fertilizer and pesticide mixing device for agricultural drones includes a cylindrical body 1. A cover plate 2 is bolted to the top of the cylindrical body 1. Pressure sensors 3 are bolted to the front and rear sides of the left side of the top of the cover plate 2. A weighing plate 4 is bolted to the top of the pressure sensors 3. A material box 5 is riveted to the opposite side of the weighing plate 4. A rectangular hole is formed on the left side of the top of the cover plate 2. The bottom of the material box 5 passes through the rectangular hole and extends into the inner cavity of the cylindrical body 1. A liquid tank 6 is fixedly connected through the right side of the top of the cover plate 2. A liquid tank 6 is fixedly connected through the right side of the top of the liquid tank 6. A liquid level sensor 7 is connected to the bottom of the material tank 5 and the bottom of the liquid tank 6, and an electric valve 8 is connected to both. A servo motor 9 is bolted to the top of the cover plate 2. The output end of the servo motor 9 passes through the cover plate 2 and is bolted to a stirring rod 10. An impact mechanism 11 is bolted to the right side of the cylinder 1. The impact mechanism 11 includes a first water pump 12. The outlet pipe of the first water pump 12 is connected to a water supply pipe 13. A second water pump 14 is bolted to the left side of the cylinder 1. The outlet pipe of the second water pump 14 is connected to a conveying pipe 15.
[0023] Please see Figure 4 The bottom end of the water supply pipe 13 is connected to the distribution pipe 16, the left side of the distribution pipe 16 is connected to the rectangular pipe 17, and the top of the rectangular pipe 17 is connected to the nozzle 18. By setting the nozzle 18, the fertilizer and pesticide can be sprayed at high speed to the bottom of the inner cavity of the cylinder 1, so that the settled fertilizer floats up and is mixed again. The top of the nozzle 18 penetrates into the inner cavity of the cylinder 1. The water inlet pipe of the first water pump 12 is connected to the cylinder 1. There are several nozzles 18.
[0024] Please see Figure 1 Both the top of the liquid tank 6 and the top of the material tank 5 are connected to the feed pipe 19. A liquid level window is installed on the front side of the cylinder 1. By setting the liquid level window, it is convenient for users to observe the liquid level of the clean water.
[0025] Please see Figure 2 The inlet pipe of the second water pump 14 is connected to the pumping pipe 20. Through the pumping pipe 20, the liquid medicine inside the cylinder 1 can be transported to the delivery pipe 15. Then, the fertilizer is transported to the medicine tank of the drone through the delivery pipe 15. The bottom end of the pumping pipe 20 is connected to the bottom of the left side of the cylinder 1.
[0026] Please see Figure 3 The bottom of the inner cavity of the material box 5 is connected to a funnel 21. By setting the funnel 21, the granular fertilizer can be guided and discharged so that it will not remain inside the material box 5. The top of the electric valve 8 on the left side extends through the inner cavity of the material box 5 and is connected to the funnel 21.
[0027] Please see Figure 1A water inlet pipe 22 is connected to the front of the top of the cylinder 1, and support legs are riveted to the four corners of the bottom of the cylinder 1. By setting support legs, the cylinder 1 can be supported, making it more stable during operation.
[0028] Please see Figure 1 The front side of the cylinder 1 is connected to a controller 23 by bolts. The output end of the controller 23 is unidirectionally connected to the servo motor 9, the first water pump 12, the second water pump 14 and the electric valve 8 respectively. The controller 23 is bidirectionally connected to the pressure sensor 3 and the liquid level sensor 7 respectively.
[0029] In use, an appropriate amount of clean water is added to the inner cavity of the cylinder 1 through the water inlet pipe 22. Then, the controller 23 controls the left electric valve 8 to open, discharging the granular fertilizer from the material bin 5 into the cylinder 1. The pressure sensor 3 monitors the discharge volume in real time. When the pressure sensor 3 detects that the discharge weight reaches the preset threshold, the controller 23 controls the left electric valve 8 to close. Simultaneously, the controller 23 controls the right electric valve 8 to open, discharging the agent into the inner cavity of the cylinder 1. The liquid level sensor 7 monitors the liquid level of the agent in real time. When the discharge liquid level reaches the threshold preset by the controller 23, the controller 23 closes the right electric valve 8, thus completing the quantitative dispensing operation. Then, the controller 23... 3. The servo motor 9 is controlled to operate. The output end of the servo motor 9 drives the stirring rod 10 to rotate. The stirring rod 10 mixes the fertilizer, pesticide and water. When the fertilizer settles, the controller 23 controls the first water pump 12 to operate. The first water pump 12 draws the fertilizer liquid from the inside of the cylinder 1 and then delivers the fertilizer liquid to the distribution pipe 16. The distribution pipe 16 delivers the fertilizer liquid to the rectangular pipe 17. The rectangular pipe 17 delivers the fertilizer liquid to the nozzle 18. The nozzle 18 sprays the fertilizer liquid at high speed, causing the fertilizer that has settled at the bottom to float up again. Then, it is mixed again by the stirring rod 10. After the mixing is completed, the controller 23 controls the second water pump 14 to operate. The second water pump 14 delivers the fertilizer and pesticide through the delivery pipe 15 to the medicine tank of the drone.
[0030] In summary, this agricultural drone-based pesticide and fertilizer mixing device, through the cooperation of pressure sensor 3, weighing plate 4, material bin 5, liquid tank 6, liquid level sensor 7, electric valve 8, impact mechanism 11, first water pump 12, and water supply pipe 13, solves the problems of existing mixing devices being unable to automatically mix pesticides and fertilizers and unable to fully mix and agitate fertilizers that have settled to the bottom during use.
Claims
1. An agricultural drone-based fertilizer and pesticide mixing device, comprising a cylindrical body (1), characterized in that: The top of the cylinder (1) is bolted to a cover plate (2). Pressure sensors (3) are bolted to the front and rear sides of the top left side of the cover plate (2). A weighing plate (4) is bolted to the top of the pressure sensor (3). A material box (5) is riveted to the opposite side of the weighing plate (4). A liquid tank (6) is fixedly connected through the right side of the top of the cover plate (2). A liquid level sensor (7) is fixedly connected through the right side of the top of the liquid tank (6). Electric valves are connected to the bottom of both the material box (5) and the liquid tank (6). 8) A servo motor (9) is bolted to the top of the cover plate (2). The output end of the servo motor (9) passes through the cover plate (2) and is bolted to a stirring rod (10). An impact mechanism (11) is bolted to the right side of the cylinder (1). The impact mechanism (11) includes a first water pump (12). The outlet pipe of the first water pump (12) is connected to a water supply pipe (13). A second water pump (14) is bolted to the left side of the cylinder (1). The outlet pipe of the second water pump (14) is connected to a conveying pipe (15).
2. The agricultural drone fertilizer and pesticide mixing device according to claim 1, characterized in that: The bottom end of the water supply pipe (13) is connected to a distribution pipe (16), the left side of the distribution pipe (16) is connected to a rectangular pipe (17), the top of the rectangular pipe (17) is connected to a nozzle (18), the top end of the nozzle (18) extends into the inner cavity of the cylinder (1), the inlet pipe of the first water pump (12) is connected to the cylinder (1), and there are several nozzles (18).
3. The agricultural drone fertilizer and pesticide mixing device according to claim 1, characterized in that: The top of the liquid tank (6) and the top of the material tank (5) are both connected to the feed pipe (19), and a liquid level window is installed on the front side of the cylinder (1).
4. The agricultural drone fertilizer and pesticide mixing device according to claim 1, characterized in that: The inlet pipe of the second water pump (14) is connected to a pumping pipe (20), and the bottom end of the pumping pipe (20) is connected to the bottom of the left side of the cylinder (1).
5. The agricultural drone fertilizer and pesticide mixing device according to claim 1, characterized in that: The bottom of the inner cavity of the material box (5) is connected to a funnel (21), and the top of the electric valve (8) on the left side extends through the inner cavity of the material box (5) and is connected to the funnel (21).
6. The agricultural drone fertilizer and pesticide mixing device according to claim 1, characterized in that: The top front of the cylinder (1) is connected to a water supply pipe (22), and the four corners of the bottom of the cylinder (1) are riveted with support legs.
7. The agricultural drone fertilizer and pesticide mixing device according to claim 1, characterized in that: The front side of the cylinder (1) is connected to a controller (23) by bolts. The output end of the controller (23) is unidirectionally connected to the servo motor (9), the first water pump (12), the second water pump (14) and the electric valve (8), respectively. The controller (23) is bidirectionally connected to the pressure sensor (3) and the liquid level sensor (7), respectively.
Citation Information
Patent Citations
Water and fertilizer integrated fertilizer liquid mixing device
CN221333854U