Agricultural sprayer for agricultural production

By combining a buoyancy-providing module and a flight control module, the problems of short drone endurance, low payload, and crop damage are solved, enabling stable pesticide spraying with long duration and high payload, meeting the needs of large-area operations.

CN224482734UActive Publication Date: 2026-07-14HARBIN ENG NORTH RICE TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HARBIN ENG NORTH RICE TECH CO LTD
Filing Date
2025-08-22
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing multi-rotor drones have problems such as short flight time, limited payload, high operating costs, and physical damage to crops in plant protection operations, making it difficult to meet the needs of large-scale, continuous operations.

Method used

Employing a buoyancy supply module and a flight control module, buoyancy is adjusted using inner and outer inelastic balloons and a high-pressure vortex fan. Combined with horizontal and vertical attitude adjusters, stable suspension and pesticide spraying are achieved. Interchangeable spray heads are used to adapt to the spraying needs of pesticides with different properties.

Benefits of technology

It improves the drone's loiter time and payload capacity, reduces operating costs, and avoids crop damage through flexible buoyancy and attitude control, achieving efficient and stable pesticide spraying.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224482734U_ABST
    Figure CN224482734U_ABST
Patent Text Reader

Abstract

The utility model discloses an agricultural sprayer for agricultural production belongs to agricultural machinery field, including buoyancy providing module still includes operation bearing platform module, fixedly connected on buoyancy providing module, flight control module, fixedly connected on operation bearing platform module, operation function module, fixedly connected operation bearing platform module on, the buoyancy providing module includes inner layer balloon still includes fixedly connected on the outer layer balloon of inner layer balloon, the utility model discloses a high pressure vortex fan and commutating valve, carry out the gas in inner layer balloon and outer layer balloon with, make the buoyancy of outer layer balloon change, make buoyancy adjustment response speed significantly accelerate, this method relative to general helium, hydrogen balloon, because need not high pressure compressor, only need a high pressure vortex fan to can complete, structure is simpler, and adjustment efficiency is higher, utilize buoyancy and carry the liquid medicine, make the time of hovering increase obviously, and energy consumption is lower.
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Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically an agricultural sprayer for agricultural production. Background Technology

[0002] In recent years, drone-based plant protection technology has developed rapidly. With its advantages of flexibility, strong terrain adaptability, high operational accuracy, and high degree of automation, it has shown great potential in plant protection of small and medium-sized plots and complex terrains. However, mainstream multi-rotor drones generally suffer from core bottlenecks such as short endurance and limited payload. This results in a small single-operation area, requiring frequent returns to change batteries and refill pesticides. In large-area, continuous operation scenarios, efficiency is severely limited. At the same time, the downwash airflow generated by its small rotors may cause physical damage to tall or fragile crops. Therefore, a new type of aerial plant protection platform is needed that combines long endurance, large payload, controllable operating costs, high safety, and adaptability to more stable and wide-area operation requirements.

[0003] An investigation revealed a Chinese utility model patent (publication number: CN221794890U) disclosing a spraying agricultural drone, comprising a drone body, spraying components, quick-connect fittings, a storage tank, and a transport vehicle. Spraying components are located on both sides of the bottom of the drone body, and quick-connect fittings are located on the bottom of the drone body. The drone body is connected to the storage tank in a cooperative manner. This utility model's spraying agricultural drone, through the combined design of the quick-connect fittings and the storage tank, allows for convenient refilling of pesticides after spraying by simply changing the storage tank. This avoids the time-consuming process of filling an integrated storage tank, improving spraying efficiency. The transport vehicle supports and moves the storage tank, making it suitable for drone bodies of different heights. Furthermore, it facilitates the movement of the heavy storage tank filled with pesticides for installation with the quick-connect fittings, enhancing the overall effectiveness.

[0004] In existing technologies, spraying is carried out by drones carrying liquid storage tanks. However, the drones need to keep suspended by the continuous rotation of their propellers, and the power of the motor, the battery, and the weight of the pesticides limit the drones' flight time, which greatly shortens the actual operation time of the drones. Therefore, there is a need for an aerial plant protection platform that can be continuously suspended to carry pesticides.

[0005] Therefore, this utility model provides an agricultural sprayer for agricultural production to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] This utility model provides an agricultural sprayer for agricultural production, which aims to solve the problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: an agricultural sprayer for agricultural production, comprising a buoyancy providing module, a work support platform module fixedly connected to the buoyancy providing module; a flight control module fixedly connected to the work support platform module; and a work function module fixedly connected to the work support platform module;

[0010] The buoyancy-providing module includes an inner balloon, an outer balloon fixedly connected to the inner balloon, an inner interface fixedly connected to the inner balloon, an outer interface fixedly connected to the outer balloon, a short tube fixedly connected to the inner interface, a long tube fixedly connected to the outer interface, and a fixing chain fixedly connected to the outer balloon.

[0011] As a preferred technical solution of this application, the work carrying platform module includes a locking column fixedly connected to a fixed chain, a beam frame fixedly connected to the locking column, a flight control and battery module fixedly connected to the beam frame, and a base plate fixedly connected to the beam frame.

[0012] As a preferred technical solution of this application, the flight control module includes a horizontal attitude adjuster fixedly connected to the beam frame, a vertical attitude adjuster fixedly connected to the beam frame, a reversing valve fixedly connected to the beam frame, and a high-pressure vortex fan fixedly connected to the base plate.

[0013] As a preferred technical solution of this application, the operating function module includes a liquid tank fixedly connected to the base plate, a spray pump fixedly connected to the base plate, a spray pipe fixedly connected to the spray pump, a mounting crossbar fixedly connected to the spray pipe, and a spray head fixedly connected to the mounting crossbar.

[0014] As a preferred technical solution of this application, both the inner and outer balloons are non-elastic, and both the inner and outer balloons are filled with a certain proportion of gas with a density less than that of air.

[0015] As a preferred technical solution of this application, the spray head and the mounting crossbar are quick-release structures.

[0016] (III) Beneficial Effects

[0017] This invention uses a high-pressure vortex blower and a reversing valve to transfer the gas between the inner and outer balloons, causing a change in the buoyancy of the outer balloon and significantly accelerating the buoyancy adjustment response speed. Compared with ordinary helium and hydrogen balloons, this method does not require a high-pressure compressor and can be completed with only a high-pressure vortex blower, resulting in a simpler structure, higher adjustment efficiency, and significantly increased time of flight and lower energy consumption due to the use of buoyancy to transport liquid medicine.

[0018] This invention uses a horizontal attitude adjuster to handle the overall forward and backward movement, overall rotation, and windward compensation, preventing deviation due to wind. A vertical attitude adjuster provides upward and downward forces, which work in conjunction with the buoyancy module for greater reliability and stability. The spray head is replaceable, allowing for the replacement of the appropriate spray head to suit different properties of the spray liquid, such as high or low viscosity, spray mist coverage area, and droplet atomization effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a partial sectional view of this utility model;

[0021] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0022] Figure 4 This is a structural diagram of the operational platform module for this practical application;

[0023] Figure 5 This is a structural diagram of the flight control module for this application.

[0024] Figure 6 This is a structural diagram of the functional modules of this practical application.

[0025] In the diagram: 1. Buoyancy supply module; 11. Inner balloon; 12. Outer balloon; 13. Inner interface; 14. Outer interface; 15. Short pipe; 16. Long pipe; 17. Fixing chain; 2. Operation platform module; 21. Locking column; 22. Beam frame; 23. Flight control and battery module; 24. Base plate; 3. Flight control module; 31. Horizontal attitude adjuster; 32. Vertical attitude adjuster; 33. Reversing valve; 34. High-pressure vortex fan; 4. Operation function module; 41. Chemical tank; 42. Spray pump; 43. Spray pipe; 44. Mounting crossbar; 45. Spray head. Detailed Implementation

[0026] 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.

[0027] This utility model provides an agricultural sprayer for agricultural production, such as... Figures 1-6As shown, it includes a buoyancy supply module 1, a work support platform module 2, which is fixedly connected to the buoyancy supply module 1; a flight control module 3, which is fixedly connected to the work support platform module 2; and a work function module 4, which is fixedly connected to the work support platform module 2.

[0028] The buoyancy supply module 1 includes an inner balloon 11, an outer balloon 12 fixedly connected to the inner balloon 11, an inner interface 13 fixedly connected to the inner balloon 11, an outer interface 14 fixedly connected to the outer balloon 12, a short tube 15 fixedly connected to the inner interface 13, a long tube 16 fixedly connected to the outer interface 14, and a fixing chain 17 fixedly connected to the outer balloon 12.

[0029] The work platform module 2 includes a locking post 21 fixedly connected to the fixed chain 17, a beam frame 22 fixedly connected to the locking post 21, a flight control and battery module 23 fixedly connected to the beam frame 22, and a base plate 24 fixedly connected to the beam frame 22.

[0030] The flight control module 3 includes a horizontal attitude adjuster 31 fixedly connected to the beam frame 22, a vertical attitude adjuster 32 fixedly connected to the beam frame 22, a reversing valve 33 fixedly connected to the beam frame 22, and a high-pressure vortex fan 34 fixedly connected to the base plate 24.

[0031] The operating function module 4 includes a liquid tank 41 fixedly connected to the base plate 24, a spray pump 42 fixedly connected to the base plate 24, a spray pipe 43 fixedly connected to the spray pump 42, a mounting crossbar 44 fixedly connected to the spray pipe 43, and a spray head 45 fixedly connected to the mounting crossbar 44.

[0032] Both the inner balloon 11 and the outer balloon 12 are non-elastic, and both the inner balloon 11 and the outer balloon 12 are filled with a certain proportion of gas with a density less than that of air.

[0033] The spray head 45 and the mounting crossbar 44 are quick-release structures.

[0034] Specifically, the buoyancy-generating part of the buoyancy-providing module consists of an inner balloon 11 and an outer balloon 12. The inner and outer balloons 11 and 12 are inelastic, meaning their volume does not change with the increase or decrease of internal or external pressure. The inner and outer balloons 11 and 12 are filled with a certain proportion of helium or hydrogen to provide the buoyancy source. The control method is as follows: if ascent is required without changing the gas volume, the gas in the compartment between the outer and inner balloons 11 is drawn into the inner balloon 11 through a high-pressure vortex blower 34 and a reversing valve 33. At this time, the gas density in the compartment between the outer and inner balloons 11 is lower than that of air, generating buoyancy, and the entire device rises; conversely, it descends.

[0035] In the flight control module 3, the horizontal attitude adjuster 31 is responsible for the overall forward and backward movement, overall rotation and windward compensation to avoid deviation due to wind. The vertical attitude adjuster 32 provides the ascent and descent force. It works together with the buoyancy supply module 1 to make it more reliable and stable. This allows for flexible control of the overall ascent and descent and fine-tuning after the liquid tank 41 is loaded with liquid and as the liquid gradually decreases during the spraying process, while also controlling the forward, backward and left and right movement and windward compensation.

[0036] The work platform module 2 and the work function module 4 are connected to the flight control and battery module 23 via the beam frame 22, providing energy and flight control. The spray pump 42 and the nozzle 43 pump the liquid from the liquid tank 41 and spray it through the mounting crossbar 44 and the spray head 45. The spray head 45 is replaceable and can be replaced with the corresponding spray head 45 according to the different properties of the spray liquid, such as high and low viscosity, spray mist coverage area, and droplet atomization effect.

[0037] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. An agricultural sprayer for agricultural production, comprising a buoyancy providing module (1), characterized in that: It also includes a work support platform module (2), which is fixedly connected to the buoyancy supply module (1); a flight control module (3), which is fixedly connected to the work support platform module (2); and a work function module (4), which is fixedly connected to the work support platform module (2). The buoyancy providing module (1) includes an inner balloon (11), an outer balloon (12) fixedly connected to the inner balloon (11), an inner interface (13) fixedly connected to the inner balloon (11), an outer interface (14) fixedly connected to the outer balloon (12), a short tube (15) fixedly connected to the inner interface (13), a long tube (16) fixedly connected to the outer interface (14), and a fixing chain (17) fixedly connected to the outer balloon (12).

2. An agricultural sprayer for agricultural production according to claim 1, characterized in that: The work platform module (2) includes a locking post (21) fixedly connected to a fixed chain (17), a beam frame (22) fixedly connected to the locking post (21), a flight control and battery module (23) fixedly connected to the beam frame (22), and a base plate (24) fixedly connected to the beam frame (22).

3. An agricultural sprayer for agricultural production according to claim 2, characterized in that: The flight control module (3) includes a horizontal attitude adjuster (31) fixedly connected to the beam frame (22), a vertical attitude adjuster (32) fixedly connected to the beam frame (22), a reversing valve (33) fixedly connected to the beam frame (22), and a high-pressure vortex fan (34) fixedly connected to the base plate (24).

4. An agricultural sprayer for agricultural production according to claim 3, characterized in that: The operation function module (4) includes a medicine tank (41) fixedly connected to the base plate (24), a spray pump (42) fixedly connected to the base plate (24), a spray pipe (43) fixedly connected to the spray pump (42), a mounting crossbar (44) fixedly connected to the spray pipe (43), and a spray head (45) fixedly connected to the mounting crossbar (44).

5. An agricultural sprayer for agricultural production according to claim 4, characterized in that: Both the inner balloon (11) and the outer balloon (12) are inelastic, and both the inner balloon (11) and the outer balloon (12) are filled with a certain proportion of gas with a density less than that of air.

6. An agricultural sprayer for agricultural production according to claim 5, characterized in that: The spray head (45) and the mounting crossbar (44) are quick-release structures.