Unmanned aerial vehicle fertilizer applicator with filtering function
By designing a drone fertilizer applicator with a filtration function, the problems of limited load capacity and fertilizer sedimentation and stratification were solved, enabling rapid fertilizer replacement and uniform spraying, thus improving fertilization efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 曲靖市土壤肥料工作站
- Filing Date
- 2025-06-17
- Publication Date
- 2026-06-19
Smart Images

Figure CN224368381U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drone technology, and in particular to a drone fertilizer applicator with a filtering function. Background Technology
[0002] Fertilizer application drones are unmanned aerial vehicles specifically designed for agricultural production, capable of precisely and efficiently spraying liquid fertilizer onto farmland. This helps farmers reduce labor costs and improve fertilization efficiency. Fertilizer application drones equipped with filters can prevent clogging caused by impurities in the fertilizer, effectively avoiding time wasted on equipment adjustments.
[0003] However, common fertilizer application drones have limited payload capacity, typically ranging from 10 to 80 kilograms, requiring frequent takeoffs and landings to replenish fertilizer. This significantly reduces efficiency when fertilizing large areas of farmland. Furthermore, some water-soluble fertilizers, such as those containing calcium, magnesium, or phosphates, are prone to sedimentation and stratification, leading to uneven spraying.
[0004] Therefore, this application provides a drone fertilizer applicator with filtering function to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a drone fertilizer applicator with a filtering function. This device can quickly replace fertilizer, reducing the time spent on fertilizer replacement, and can also effectively prevent uneven spraying when spraying fertilizers that are prone to sedimentation and stratification.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] A drone fertilizer applicator with filtration function includes a drone device, a spraying device, and a fertilizer carrying device. The spraying device includes a spraying box and a carrying box. A water pump is fixedly installed on one side of the bottom surface of the spraying box by bolts. The output end of the water pump is fixedly connected to an inlet pipe and an outlet pipe. A filter hole is opened on one side of the bottom surface of the carrying box and a ring-shaped sealing gasket is fixedly installed around it. One end of the inlet pipe passes through the filter hole and is fixedly connected to a filter cartridge. A top cover cone is fitted around the filter cartridge.
[0008] The spraying device is installed at the lower end of the fertilizer carrier device. The fertilizer carrier device includes a water-soluble fertilizer tank. The bottom surface of the water-soluble fertilizer tank has an outlet on one side of the inner wall. A sealing cover is slidably installed inside the outlet. A tank cover is fixedly installed at the upper end of the water-soluble fertilizer tank, and a motor is fixedly installed at the upper end of the tank cover. A battery block is fixedly connected to the upper end of the motor. The output end of the motor passes through the tank cover and is fixedly connected to a stirring shaft. Two stirring blades are fixedly connected to the periphery of the stirring shaft.
[0009] Furthermore, the drone device includes a fuselage, with four arms fixedly mounted on both sides of the outer wall at the front and rear ends of the fuselage. Propellers are fixedly connected to the output ends of the four arms. Support plates are fixedly connected to both the front and rear ends of the lower end of the fuselage, and frames are fixedly mounted on both the front and rear ends of the lower end of the fuselage.
[0010] Furthermore, the carrier box is fixedly installed at the upper end of the spray box body, the spray box body is fixedly installed in the middle of the machine body, and the carrier box is fixedly installed at the upper end of the machine body.
[0011] Furthermore, grooves are provided on both sides of the bottom surface of the bearing box, and support blocks are fixedly installed on both sides of the lower end surface of the water-soluble fertilizer box.
[0012] Furthermore, limit blocks are fixedly installed on both sides of the outer wall of the water-soluble fertilizer box and fixed inside the bearing box by multiple bolts, while the support block is slidably installed inside the groove.
[0013] Furthermore, a horizontal pipe is fixedly connected to one end of the liquid outlet pipe, and multiple nozzles are fixedly connected to the lower end of the horizontal pipe.
[0014] Furthermore, a limiting rope is fixedly connected to the upper end of the sealing cover, and the limiting rope is fixedly connected to one side of the inner wall of the water-soluble fertilizer box.
[0015] This utility model has the following beneficial effects:
[0016] 1. The present invention proposes a drone fertilizer applicator with a filtering function. In the process of using common fertilizer drones, the fertilizer tanks are usually small, requiring frequent lifting and lowering of the equipment to add fertilizer, which wastes a lot of time. When using this device, the fertilizer carrier can be quickly replaced by changing the fertilizer carrier. Simply unscrew the bolts of the limiting blocks on both sides of the water-soluble fertilizer tank and replace the fertilizer carrier with the one that is full.
[0017] 2. The present invention proposes a drone fertilizer applicator with a filtering function. Some fertilizers will settle and separate during the spraying or placement process, resulting in uneven spraying. The device is equipped with a stirring shaft and stirring blades inside. The motor drives the stirring shaft to drive the stirring blades to continuously stir, which can effectively prevent the internal fertilizer from settling and separating. Attached Figure Description
[0018] Figure 1 This is an overall isometric schematic diagram of the present invention;
[0019] Figure 2 This is a bottom view of the overall design of this utility model;
[0020] Figure 3 This is a bottom-view schematic diagram of the unmanned aerial vehicle (UAV) device of this utility model;
[0021] Figure 4 This is a cross-sectional schematic diagram of the spraying device of this utility model;
[0022] Figure 5 This is a cross-sectional schematic diagram of the fertilizer carrying device of this utility model;
[0023] Figure 6 This is a schematic diagram of the combined structure of the spraying device and the fertilizer carrying device of this utility model;
[0024] Figure 7 This is an isometric schematic diagram of the combination of the spraying device and the fertilizer carrying device of this utility model.
[0025] Legend:
[0026] 1. Unmanned Aerial Vehicle (UAV) Unit; 2. Spraying Device; 3. Fertilizer Carrying Device; 101. Fuselage; 102. Arm; 103. Propeller; 104. Support Plate; 105. Frame; 201. Spraying Box; 202. Water Pump; 203. Liquid Inlet Pipe; 204. Filter Cartridge; 205. Horizontal Pipe; 206. Nozzle; 207. Carrying Box; 208. Sealing Gasket; 209. Top Cover Cone; 210. Liquid Outlet Pipe; 301. Water-Soluble Fertilizer Tank; 302. Liquid Outlet; 303. Limiting Rope; 304. Sealing Cover; 305. Motor; 306. Agitator Blade; 307. Agitator Shaft; 308. Limiting Block. Detailed Implementation
[0027] 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.
[0028] Reference Figure 1 , Figure 2 , Figure 3 An embodiment of this utility model is provided: a drone fertilizer applicator with a filtering function, including a drone device 1, a spraying device 2 and a fertilizer carrying device 3. The drone device 1 includes a body 101. Arms 102 are fixedly installed on both sides of the front and rear ends of the body 101 near the outer wall. Propellers 103 are fixedly connected to the output ends of the four arms 102. Support plates 104 are fixedly connected to the lower end of the body 101 near the front and rear ends. A frame 105 is fixedly installed on the lower end surface of the body 101 near the front and rear ends.
[0029] Specifically, the two support plates 104 firmly hold the horizontal tube 205 in place, preventing it from breaking or being damaged due to impact, excessive speed, or strong winds. The frame 105 can prevent damage to the fuselage 101 due to excessive speed upon landing.
[0030] Reference Figure 2 , Figure 4 , Figure 7 The spraying device 2 includes a spraying box 201 and a carrier box 207. A water pump 202 is fixedly installed on one side of the bottom surface of the spraying box 201 by bolts. The output end of the water pump 202 is fixedly connected to an inlet pipe 203 and an outlet pipe 210, respectively. A filter hole is opened on one side of the bottom surface of the carrier box 207 and a ring-shaped sealing gasket 208 is fixedly installed around it. One end of the inlet pipe 203 passes through the filter hole and is fixedly connected to a filter cartridge 204. A top cover cone 209 is fitted around the filter cartridge 204. The carrier box 207 is fixedly installed on the upper end of the spraying box 201. The spraying box 201 is fixedly installed in the middle of the machine body 101 and the carrier box 207 is fixedly installed on the upper end of the machine body 101. One end of the outlet pipe 210 is fixedly connected to a horizontal pipe 205. Multiple nozzles 206 are fixedly connected to the lower end of the horizontal pipe 205.
[0031] Specifically, when the water-soluble fertilizer tank 301 is placed inside the carrier box 207, the sealing cover 304 can be opened by the top cover cone 209, allowing the fertilizer to flow into the filter holes. A stable spraying speed is maintained under the drive of the water pump 202, preventing uneven spraying. The combination of the horizontal pipe 205 and multiple nozzles 206 allows for a wider spraying area.
[0032] Reference Figure 5 , Figure 6 , Figure 7 The spraying device 2 is installed at the lower end of the fertilizer carrier device 3. The fertilizer carrier device 3 includes a water-soluble fertilizer tank 301. An outlet 302 is provided on one side of the inner wall of the bottom surface of the water-soluble fertilizer tank 301. A sealing cover 304 is slidably installed inside the outlet 302. A tank cover is fixedly installed at the upper end of the water-soluble fertilizer tank 301, and a motor 305 is fixedly installed on the upper end of the tank cover. A battery block is fixedly connected to the upper end of the motor 305. The output end of the motor 305 passes through the tank cover and is fixedly connected to a stirring shaft 307 for stirring. Two stirring blades 306 are fixedly connected to the outer periphery of the shaft 307. Grooves are provided on both sides of the bottom surface of the bearing box 207. Support blocks are fixedly installed on both sides of the lower end face of the water-soluble fertilizer box 301. Limiting blocks 308 are fixedly installed on both sides of the outer wall of the water-soluble fertilizer box 301 and are fixed inside the bearing box 207 by multiple bolts. The support blocks are slidably installed inside the grooves. A limiting rope 303 is fixedly connected to the upper end of the sealing cover 304 and the limiting rope 303 is fixedly connected to one side of the inner wall of the water-soluble fertilizer box 301.
[0033] Specifically, the motor 305 drives the stirring shaft 307 to rotate the stirring blades 306, preventing internal fertilizer sedimentation and stratification. The sealing cover 304 prevents fertilizer leakage from the outlet 302 when the water-soluble fertilizer tank 301 is not in place. The water-soluble fertilizer tank 301 is fixedly installed inside the carrier box 207 by the cooperation of bolts and limit block 308, preventing the water-soluble fertilizer tank 301 from detaching from the carrier box 207 when in the air.
[0034] Working Principle: When using a fertilizer application drone, frequent watering and fertilizer additions are required, consuming significant time. This device separates the fertilizer carrier 3 from the fertilizer application drone. Place the water-soluble fertilizer tank 301 flat, open one side of the tank cover, and place the inner sealing cover 304 over the outlet 302. Then, add water and water-soluble fertilizer, or pour the prepared water-soluble fertilizer into the tank. Next, start the motor 305, powered by the battery. The motor 305 drives the stirring shaft 307, which in turn rotates the stirring blades 306, effectively preventing the water-soluble fertilizer from settling and separating. After the fertilizer application is complete, the fertilizer can be quickly replaced after the fertilizer application drone lands. First, unscrew the bolts on the limiting blocks 308 on both sides of the water-soluble fertilizer tank 301, and then remove the empty water-soluble fertilizer tank 301 from the carrier box 207. The prepared water-soluble fertilizer tank 301 is lifted and placed inside the carrier box 207, maintaining a vertical position during placement. Once successfully placed, the two support blocks at the bottom of the water-soluble fertilizer tank 301 will slide into the two grooves on the bottom surface of the carrier box 207. The top cover cone 209 will open the sealing cover 304, allowing the fertilizer to enter the filter holes. The fertilizer passes through the filter cartridge 204, where impurities are filtered out, and then enters the inlet pipe 203. During spraying, the fertilizer, driven by the water pump 202, enters the outlet pipe 210 through the inlet pipe 203 and is then sprayed out by the nozzle 206. The UAV device 1, motor 305, and battery block are all mature and publicly available technologies; therefore, their specific structures and working principles will not be elaborated upon in this text.
[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.
Claims
1. A drone fertilizer applicator with filtration function, comprising a drone device (1), a spraying device (2), and a fertilizer carrying device (3), characterized in that: The spraying device (2) includes a spraying box (201) and a carrier box (207). A water pump (202) is fixedly installed on one side of the bottom surface of the spraying box (201) by bolts. The output end of the water pump (202) is fixedly connected to an inlet pipe (203) and an outlet pipe (210). A filter hole is opened on one side of the bottom surface of the carrier box (207) and a ring-shaped sealing gasket (208) is fixedly installed around it. One end of the inlet pipe (203) passes through the filter hole and is fixedly connected to a filter cartridge (204). A top cover cone (209) is sleeved around the filter cartridge (204). The spraying device (2) is installed at the lower end of the fertilizer carrier device (3). The fertilizer carrier device (3) includes a water-soluble fertilizer tank (301). The water-soluble fertilizer tank (301) has an outlet (302) on one side of its inner wall. A sealing cover (304) is slidably installed inside the outlet (302). A tank cover is fixedly installed at the upper end of the water-soluble fertilizer tank (301) near the other end. A motor (305) is fixedly installed at the upper end of the tank cover. A battery block is fixedly connected to the upper end of the motor (305). The output end of the motor (305) is fixedly connected to a stirring shaft (307) through the tank cover. Two stirring blades (306) are fixedly connected to the periphery of the stirring shaft (307).
2. The unmanned aerial vehicle fertilizer applicator with filtering function according to claim 1, characterized in that: The unmanned aerial vehicle (UAV) device (1) includes a fuselage (101), and four arms (102) are fixedly installed on the front and rear ends of the fuselage (101) near the outer wall. The output ends of the four arms (102) are fixedly connected to propellers (103). Support plates (104) are fixedly connected to the lower end of the fuselage (101) near the front and rear ends. A frame (105) is fixedly installed on the lower end surface of the fuselage (101) near the front and rear ends. 3.The unmanned aerial vehicle fertilizer applicator with filtering function of claim 1, wherein: The carrier box (207) is fixedly installed on the upper end of the spray box body (201), and the spray box body (201) is fixedly installed in the middle of the machine body (101) and the carrier box (207) is fixedly installed on the upper end of the machine body (101).
4. The unmanned aerial vehicle fertilizer applicator with filtering function according to claim 1, characterized in that: The bottom surface of the bearing box (207) is provided with grooves on both sides, and the lower end surface of the water-soluble fertilizer box (301) is fixedly provided with support blocks on both sides.
5. The unmanned aerial vehicle fertilizer applicator with filtering function according to claim 4, characterized in that: Limiting blocks (308) are fixedly installed on both sides of the outer wall of the water-soluble fertilizer box (301) and fixed inside the bearing box (207) by multiple bolts, and the support block is slidably installed inside the groove. 6.The unmanned aerial vehicle fertilizer applicator with filtering function of claim 1, wherein: One end of the liquid outlet pipe (210) is fixedly connected to a horizontal pipe (205), and the lower end of the horizontal pipe (205) is fixedly connected to a plurality of nozzles (206). 7.The unmanned aerial vehicle fertilizer applicator with filtering function of claim 1, wherein: The upper end of the sealing cover (304) is fixedly connected to a limiting rope (303), and the limiting rope (303) is fixedly connected to one side of the inner wall of the water-soluble fertilizer box (301).