Hanging spraying equipment suitable for agricultural protection unmanned aerial vehicle

By designing a rotating mixing device for the storage and spraying equipment, combined with a pressure device, the problem of pesticide condensation and blockage in agricultural drone spraying equipment was solved, achieving efficient and stable pesticide spraying and coverage.

CN223533656UActive Publication Date: 2025-11-11SUZHOU DAYU WUJIANG AVIATION TECH CO LTD
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Patent Information

Application Number
CN202422743855.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-12
Publication Date
2025-11-11
Estimated Expiration
2034-11-12

AI Technical Summary

Technical Problem

Existing agricultural drones are prone to condensation and blockage when spraying high-concentration pesticide solutions, resulting in low spraying efficiency and potential flow interruption after prolonged spraying.

Method used

A hanging spraying device was designed, which includes a material storage spraying device, a drive control device, a stirring device, and a pressure application device. The device ensures smooth spraying of the pesticide solution by rotating the stirring rod and blades and providing spraying pressure through the pressure application device.

Benefits of technology

It enables the smooth spraying of liquids of various viscosities, avoids clogging, provides better spraying pressure and coverage, and is securely connected to drones, making it easy to manufacture and use.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model relates to hanging spraying equipment suitable for an agricultural protection unmanned aerial vehicle, which comprises an equipment body, the equipment body comprises a material storage spraying device, a driving control device is arranged at the upper end of the material storage spraying device, the material storage spraying device comprises a material storage tank, a liquid inlet hole is formed in the material storage tank, a movable sealing plug is mounted on the liquid inlet hole, and the movable sealing plug is connected with the driving control device. A plurality of spraying assemblies are connected to the lower portion of the material storage tank in a communicating mode, a stirring device is installed in the material storage tank, the driving control device comprises a hanging box body, a driving assembly connected with the stirring device is installed in the hanging box body, a pressure applying device is installed in the hanging box body, and the pressure applying device is communicated with the material storage tank. A power supply module and a control module are further installed in the hanging box body, the power supply module is electrically connected with the driving assembly and the pressure applying device, and the control module is electrically connected with the driving assembly, the pressure applying device and the driving assembly. Therefore, stirring of the liquid medicine can be achieved, smooth spraying of the liquid medicine with various viscosities is met, and blocking is avoided.
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Description

Technical Field

[0001] This utility model relates to a spraying device, and more particularly to a splicing device suitable for agricultural drones. Background Technology

[0002] Currently, conventional agricultural drones are mainly used for spraying or irrigating specific areas with pesticides such as nutrient solutions and insect repellents. The standard method involves attaching a storage tank to the drone and then activating its attached nozzles to spray the pesticides in the designated area.

[0003] However, because different pesticide solutions have varying viscosities, some higher-concentration solutions tend to "condense" at the bottom after settling, causing blockages in the spray components and hindering smooth spraying. Therefore, manual intervention is often required upon reaching the spraying area, resulting in low spraying efficiency. Furthermore, relying solely on gravity and normal water pressure for spraying can lead to flow interruptions due to pesticide concentration after prolonged application.

[0004] In view of the above-mentioned shortcomings, the designer has actively researched and innovated in order to create a splicing device suitable for agricultural drones, making it more valuable for industrial use. Utility Model Content

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a splicing device suitable for agricultural drones.

[0006] This utility model discloses a splicing device for agricultural drones, comprising a device body, wherein: the device body includes a material storage and spraying device, the upper end of which is divided into a drive control device; the material storage and spraying device includes a material storage tank, which has a liquid inlet hole with a movable sealing plug installed on the liquid inlet hole; several spraying components are conductively connected to the lower part of the material storage tank; a stirring device is installed inside the material storage tank; the drive control device includes a splicing box, and a device for connecting and spraying is installed inside the splicing box. The mixing device is connected to a drive assembly. A pressure device is installed inside the mounting box. The pressure device is connected to the storage tank. A power supply module and a control module are also installed inside the mounting box. The power supply module is electrically connected to the drive assembly and the pressure device. The control module is electrically connected to the drive assembly, the pressure device, and the drive assembly. The mixing device includes a mixing rod connected to the drive assembly. Several mounting blocks are installed at intervals on the mixing rod. A disturbance rod is horizontally installed on the mounting block. Blades are installed at both ends of the disturbance rod.

[0007] Furthermore, in the above-mentioned attachment spraying equipment applicable to agricultural drones, the spraying component includes a funnel structure located at the bottom of the storage tank, a spraying pipe extending downward from the funnel structure, and a spraying mechanism provided on the spraying pipe.

[0008] Furthermore, in the aforementioned attachment spraying equipment suitable for agricultural drones, the spraying mechanism is a spray head; or, the spraying mechanism is a single-hole irrigation head.

[0009] Furthermore, in the aforementioned attachment spraying device suitable for agricultural drones, the mounting block consists of two symmetrically distributed clamping blocks that clamp the stirring rod and are connected by connecting screws. A transverse limiting groove is provided on the clamping block, and the end of the disturbance rod is embedded in the transverse limiting groove and clamped by the clamping block. The blade is connected to the disturbance rod by connecting screws.

[0010] Furthermore, in the aforementioned attachment spraying equipment suitable for agricultural drones, the blades are arranged in a non-horizontal, staggered pattern; the blades have an inwardly concave arc structure.

[0011] Furthermore, in the aforementioned attachment spraying equipment suitable for agricultural drones, a positioning base is installed inside the storage tank, a bearing assembly is installed on the positioning base, and the lower end of the stirring rod is connected to the bearing assembly.

[0012] Furthermore, in the aforementioned attachment spraying equipment suitable for agricultural drones, the drive component is a motor; and the power supply module is a battery assembly.

[0013] Furthermore, in the aforementioned attachment spraying equipment suitable for agricultural drones, the control module is a microcontroller, an industrial computer, or a PLC component; the control module is connected to an auxiliary communication component, which is a WIFI component or a 5G component.

[0014] Furthermore, in the aforementioned attachment spraying equipment applicable to agricultural drones, the pressurizing device includes an air pump, the air outlet of which is connected to a storage tank, and the air inlet of which is connected to an air guide filter end, which is installed on the outside of the attachment box.

[0015] Furthermore, in the aforementioned attachment and spraying equipment applicable to agricultural drones, several suspension rods are installed around the upper periphery of the attachment box, and limit buckles are distributed on the suspension rods.

[0016] By means of the above solution, this utility model has at least the following advantages:

[0017] 1. It can stir the medicine solution, so as to ensure the smooth spraying of medicine solutions of various viscosities and avoid blockage.

[0018] 2. Spraying can be assisted by a pressure device to achieve better spraying pressure and meet different coverage needs.

[0019] 3. The blade distribution can achieve better coverage of the stirring area, realizing the stirring of the entire liquid in the storage tank.

[0020] 4. It can be docked with existing agricultural drone mounting frames to ensure a stable connection.

[0021] 5. The overall structure is simple, making it easy to manufacture and use.

[0022] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0023] Figure 1 This is a structural diagram of a spraying device suitable for attaching to agricultural drones.

[0024] Figure 2 This is a schematic diagram of the concave arc structure of the blade.

[0025] The meanings of the labels in the figures are as follows.

[0026] 1. Material spraying device; 2. Drive control device

[0027] 3 Storage tank 4 Movable sealing plug

[0028] 5. Mounting box 6. Drive assembly

[0029] 7. Pressure application device; 8. Power supply module

[0030] 9. Control module 10. Stirring rod

[0031] 11 Mounting block 12 Disturbance rod

[0032] 13 Blades 14 Funnel Structure

[0033] 15 Spray pipe 16 Spray head

[0034] 17 Single-hole pouring head 18 Positioning base

[0035] 19 Bearing assembly 20 Hanger rod

[0036] 21 Limiting buckle Detailed Implementation

[0037] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0038] like Figures 1 to 2 This is a spraying device suitable for agricultural drones, comprising a main body. Its unique feature is that the main body includes a material storage and spraying device 1, with a drive control device 2 located at its upper end. The drive control device 2 coordinates and controls the spraying operation of the material storage and spraying device 1. Specifically, the material storage and spraying device 1 includes a storage tank 3 with a liquid inlet hole and a movable sealing plug 4. This allows for liquid filling during material preparation and enables effective liquid sealing through the movable sealing plug 4. Simultaneously, to ensure effective spray guidance, several spraying components are connected to the bottom of the storage tank 3. To meet the need for flowing spraying of relatively viscous pesticide solutions, a stirring device is installed inside the storage tank 3.

[0039] During implementation, the drive control device 2 includes a mounting box 5, within which a drive assembly 6 connected to the stirring device is installed. This provides driving power to the stirring device, facilitating its rotation for stirring the liquid medicine. Considering the need to increase the pressure in the storage tank 3, allowing for better pressurized spraying of the liquid medicine through the spraying assembly and better preventing improper clogging, a pressure applying device 7 is installed inside the mounting box 5, and is electrically connected to the storage tank 3. Simultaneously, to meet the requirements of long-endurance autonomous drive operation, a power supply module 8 and a control module 9 are also installed inside the mounting box 5. The power supply module 8 is electrically connected to the drive assembly 6 and the pressure applying device 7, and the control module 9 is electrically connected to the drive assembly 6, the pressure applying device 7, and the drive assembly 6.

[0040] Furthermore, to achieve better mixing, the mixing device includes a mixing rod 10 connected to the drive assembly 6. Several mounting blocks 11 are spaced apart on the mixing rod 10, and disturbance rods 12 are horizontally mounted on the mounting blocks 11. Blades 13 are mounted at both ends of the disturbance rods 12. Thus, as the mixing rod 10 rotates, the disturbance rods 12 can drive the blades 13 to agitate the liquid, preventing improper clogging of the spraying assembly. Simultaneously, this improves the flow efficiency of the liquid and increases the final spraying rate.

[0041] According to a preferred embodiment of this utility model, the spraying assembly includes a funnel structure 14 located at the bottom of the storage tank 3, with a spray pipe 15 extending downward from the funnel structure 14, and a spraying mechanism installed on the spray pipe 15. During implementation, the spraying mechanism is a spray head 16; or, the spraying mechanism is a single-hole irrigation head 17. This allows for regionalized spraying coverage or independent irrigation of specific cultivation locations, meeting the actual spraying needs of different pesticides such as insecticides and fertilizers, depending on the usage environment. During implementation, under normal hydraulic differential conditions, the drone will not (or only will) experience leakage during material delivery; operation will only be initiated after the pressure device 7 is activated. If leakage is a concern, a disposable plug can be fitted onto the spraying mechanism, which can be flushed away by the liquid flow after use, preventing unnecessary leakage during drone delivery.

[0042] Furthermore, to ensure a stable connection, the mounting block 11 consists of two symmetrically distributed clamping blocks that hold the stirring rod 10. These clamping blocks are connected by connecting screws. Simultaneously, to accommodate the volume of the storage tank 3, achieve optimal stirring to agitate the liquid, prevent localized coagulation, and meet the flow requirements of viscous liquids, the clamping blocks are equipped with transverse limiting grooves. The end of the agitator 12 is embedded in these grooves and held by the clamping blocks. The blade 13 is connected to the agitator 12 via connecting screws. This allows the blade 13 to be positioned optimally for liquid flow. Moreover, to achieve an appropriate flow rate during stirring and prevent abnormal upper or lower layer flow, ensuring uniform stirring as much as possible, the blade 13 is arranged in a non-horizontally staggered configuration with an inwardly concave arc structure.

[0043] In practical implementation, this invention features a positioning base 18 installed inside the storage tank 3, with a bearing assembly 19 mounted on the positioning base 18. The lower end of the stirring rod 10 is connected to the bearing assembly 19. This ensures that even if the stirring rod 10 rotates at relatively high speeds, causing flow obstruction, its lower end is well-limited, preventing unnecessary vibrations and ensuring the normal flight attitude of the drone. Furthermore, considering the defined drive operation, the drive assembly 6 is a motor, and the power supply module 8 is a battery assembly. This meets the requirements for long-term operation and continuous spraying. Considering the configuration needs of various working conditions, the control module 9 is a microcontroller, an industrial computer, or a PLC. Appropriate components can be selected according to actual needs to reduce implementation costs; a commercially available control motherboard with a microcontroller is typically preferred. Moreover, to facilitate remote independent start-up and data transmission during actual operation, the control module 9 is connected to an auxiliary communication module, which can be a WIFI module or a 5G module.

[0044] Furthermore, in order to meet the requirement of continuous pressure supply, the pressure application device 7 includes an air pump. The air outlet of the air pump is connected to the storage tank 3, and the air inlet of the air pump is connected to the end of the air guide filter. The end of the air guide filter is installed on the outside of the hanging box 5.

[0045] During implementation, in order to connect with the pre-set mounting device of the drone, several lifting rods 20 are installed around the upper periphery of the mounting box 5 of this utility model, and limit buckles 21 are distributed on the lifting rods 20. Usually, agricultural drones have a lifting frame at the bottom, and the lifting frame is equipped with a lifting ring. After the limit buckles 21 are inserted into the lifting ring, they can be clamped by external fixing clips or tied with rope.

[0046] The working principle of this utility model is as follows:

[0047] The liquid medicine to be sprayed is poured in through the inlet. Then, depending on the viscosity of the liquid medicine, the stirring device is selected to start stirring during the feeding process or to "preheat" the stirring after it reaches the spraying area.

[0048] When spraying is required, the pressurizing device 7 starts working to pressurize the internal environment of the storage tank 3. Then, the liquid medicine is sprayed out from the spraying assembly.

[0049] Even if the pesticide solution condenses locally at the feed end of the spraying unit during spraying, the stirring device can break up the condensation in time to ensure smooth spraying.

[0050] As can be seen from the above textual description and the accompanying drawings, the present invention has the following advantages:

[0051] 1. It can stir the medicine solution, so as to ensure the smooth spraying of medicine solutions of various viscosities and avoid blockage.

[0052] 2. Spraying can be assisted by a pressure device to achieve better spraying pressure and meet different coverage needs.

[0053] 3. The blade distribution can achieve better coverage of the stirring area, realizing the stirring of the entire liquid in the storage tank.

[0054] 4. It can be docked with existing agricultural drone mounting frames to ensure a stable connection.

[0055] 5. The overall structure is simple, making it easy to manufacture and use.

[0056] Furthermore, the directions or positional relationships described in this utility model are based on the directions or positional relationships shown in the accompanying drawings. They are only for the purpose of facilitating the description of this utility model and simplifying the description, and are not intended to indicate or imply that the device or structure referred to must have a specific orientation, or to operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0057] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A splicing device suitable for agricultural drones, comprising a device body, characterized in that: The equipment body includes a material storage and spraying device, with a drive control device at its upper end. The material storage and spraying device includes a storage tank with a liquid inlet hole and a movable sealing plug. Several spraying components are conductively connected to the lower part of the storage tank. A stirring device is installed inside the storage tank. The drive control device includes a mounting box containing a drive component connected to the stirring device. A pressure applying device is also installed inside the mounting box and is conductively connected to the storage tank. A power supply module and a control module are also installed inside the mounting box. The power supply module is electrically connected to the drive component and the pressure applying device, and the control module is electrically connected to the drive component, the pressure applying device, and the drive component. The stirring device includes a stirring rod connected to the drive component. Several mounting blocks are spaced apart on the stirring rod, and disturbance rods are horizontally mounted on the mounting blocks. Blades are mounted at both ends of the disturbance rods.

2. The attachment spraying device for agricultural drones according to claim 1, characterized in that: The spraying assembly includes a funnel structure located at the bottom of the storage tank, with a spraying pipe extending downward from the funnel structure, and a spraying mechanism installed on the spraying pipe.

3. The attachment spraying device for agricultural drones according to claim 2, characterized in that: The spraying mechanism is a spray head; or, the spraying mechanism is a single-hole irrigation head.

4. The attachment spraying device for agricultural drones according to claim 1, characterized in that: The mounting block consists of two symmetrically distributed clamping blocks that hold the stirring rod. The clamping blocks are connected by connecting screws. A transverse limiting groove is provided on the clamping block, and the end of the disturbance rod is embedded in the transverse limiting groove and held by the clamping block. The blade is connected to the disturbance rod by connecting screws.

5. The attachment spraying device for agricultural drones according to claim 1, characterized in that: The blades are arranged in a non-horizontal, staggered pattern; the blades have an inwardly concave arc structure.

6. The attachment spraying device for agricultural drones according to claim 1, characterized in that: A positioning base is installed inside the storage tank, and a bearing assembly is installed on the positioning base. The lower end of the stirring rod is connected to the bearing assembly.

7. The attachment spraying device for agricultural drones according to claim 1, characterized in that: The drive component is a motor; the power supply module is a battery assembly.

8. The attachment spraying device for agricultural drones according to claim 1, characterized in that: The control module is a microcontroller, an industrial computer, or a PLC component; the control module is connected to an auxiliary communication module, which is a WIFI component or a 5G component.

9. The attachment spraying device for agricultural drones according to claim 1, characterized in that: The pressurizing device includes an air pump, the air outlet of which is connected to the storage tank, and the air inlet of which is connected to an air guide filter end, which is installed on the outside of the hanging box.

10. The attachment spraying device for agricultural drones according to claim 1, characterized in that: The upper periphery of the hanging box is surrounded by several hanging rods, and the hanging rods are distributed with limit buckles.