Pesticide mixing and spraying unmanned aerial vehicle

Abstract

The utility model discloses a pesticide mixing and spraying unmanned aerial vehicle which adopts a plurality of independent liquid storage tanks to realize separate storage of pesticide liquid; a mixing chamber is arranged, so that pesticide liquid can be blended and mixed as required during operation, pesticide application is accurate, and diversified agricultural production requirements are met; a plurality of nozzles are arranged, so that wide-area and uniform spraying coverage can be realized, the use cost is reduced, and the spraying efficiency is improved; the supporting legs at the bottom of the machine body are of a telescopic structure, the stretching length can be flexibly adjusted according to different terrain heights, the adaptability to complex terrains is enhanced, and the operation stability is guaranteed; and by adopting the design of the integrated machine body, all the structures are closely combined in space and mutually cooperated in function, so that the space is saved, and the stability of the whole structure is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural unmanned plane technical field especially, relates to a kind of mixed pesticide spraying unmanned plane. BACKGROUND

[0002] The growth of crops such as grain cannot be separated from the spraying of pesticides. The traditional manual pesticide spraying method is inefficient and difficult to meet the needs of large-area farmland operation, thus promoting the development of unmanned aerial vehicle spraying technology.

[0003] Compared with the traditional spraying method, the unmanned aerial vehicle spraying technology has the advantages of high operation efficiency, resource saving and good spraying effect, but the currently widely used unmanned aerial vehicle spraying technology also has many shortcomings, such as large size occupying more storage and transportation space; the supporting legs are not telescopic, and it is difficult to adapt to complex terrain; the spray structure is generally single nozzle, and is only set in the front, resulting in narrow spraying range and poor uniformity; at the same time, the number of liquid storage tanks is single, and it cannot be flexibly adjusted to mix and spray multiple drugs, which has low adaptability and increases the use cost.

[0004] Therefore, it is necessary to improve the structure of the existing spraying unmanned aerial vehicle, which not only effectively reduces the size of the whole machine, realizes convenient storage and placement, and reduces transportation and storage costs; at the same time, the length of the supporting legs is adjusted according to different terrain heights to ensure that the unmanned aerial vehicle is stably parked / operated in complex terrain such as slope and pitted farmland, and the environmental adaptability is enhanced; in addition, the design of multiple nozzles and multiple liquid storage tanks is adopted to independently store different drugs, which are mixed as needed to realize precise, wide-area and uniform pesticide application, reduce the use cost and improve the pesticide spraying efficiency. SUMMARY

[0005] In view of the shortcomings of the current spraying unmanned aerial vehicle, the purpose of the utility model is to provide a mixed pesticide spraying unmanned aerial vehicle, which not only effectively reduces the size of the whole machine, realizes convenient storage and placement, and reduces transportation and storage costs; at the same time, the length of the supporting legs is adjusted according to different terrain heights to ensure that the unmanned aerial vehicle is stably parked / operated in complex terrain such as slope and pitted farmland, and the environmental adaptability is enhanced; in addition, the design of multiple nozzles and multiple liquid storage tanks is adopted to independently store different drugs, which are mixed as needed to realize precise, wide-area and uniform pesticide application, reduce the use cost and improve the pesticide spraying efficiency.

[0006] To achieve the purpose of the utility model, the utility model provides a kind of mixed pesticide spraying unmanned aerial vehicle, comprising:

[0007] The unmanned aerial vehicle body is used to fly to the set place;

[0008] A plurality of liquid storage tanks are arranged in the unmanned aerial vehicle body for storing liquid medicine respectively;

[0009] The mixed spraying mechanism is used to receive and mix the liquid medicine of the liquid storage tank and then spray.

[0010] Furthermore, the storage tank is connected to the mixing and spraying mechanism, and can be controlled to shut down or supply liquid to the mixing and spraying mechanism.

[0011] Furthermore, the mixing and spraying mechanism includes a mixing chamber, a conveying system, and a spraying system, wherein the mixing chamber includes:

[0012] A mixing chamber for controlled reception of the drug solution from the storage tank;

[0013] A stirring device, located within the mixing chamber, stirs the medicinal liquid;

[0014] The conveying system includes:

[0015] A liquid pump is used to deliver the liquid medicine in the storage tank to the mixing chamber;

[0016] The spraying system includes:

[0017] Several nozzles are connected to the mixing chamber for spraying the mixed medicine solution to a designated location.

[0018] Furthermore, several of the liquid storage tanks are sector-shaped cylindrical liquid storage tanks with a sector-shaped cross-section, and the main body of the mixing chamber is cylindrical. Several of the sector-shaped cylindrical liquid storage tanks are arranged side by side along the circumference around the mixing chamber to form an integral cylindrical structure.

[0019] Furthermore, the stirring device includes a stirring shaft, multiple stirring blades distributed on the stirring shaft, and a stirring motor for driving the stirring shaft;

[0020] The stirring blades are fixed to the stirring shaft in a radial direction. The stirring shaft extends downward through the top of the mixing chamber into the interior of the mixing chamber. The stirring motor is located outside the mixing chamber and is set at the top.

[0021] Furthermore, the number of the liquid pumps corresponds to the number of the liquid storage tanks, and they are located inside the liquid storage tanks, with the suction inlet of the liquid pumps near the bottom of the liquid storage tanks.

[0022] Furthermore, the bottom of the mixing chamber has an inverted conical structure;

[0023] The spraying system also includes a main spray pipe and spray branch pipes. The main spray pipe has a protrusion in the middle that matches the bottom defect of the inverted conical structure. The spray branch pipes are connected to the main spray pipe, and the number of spray branch pipes corresponds to the number of nozzles.

[0024] Furthermore, the drone body also includes several retractable support legs.

[0025] Further, the top of the liquid storage tank is provided with a liquid inlet; the outlet pipe of the liquid pump enters the mixing chamber through the top of the liquid storage tank.

[0026] Further, the overall cylindrical structure is located at the top center of the unmanned aerial vehicle body.

[0027] The beneficial effects of the utility model are as follows: the mixed pesticide spraying unmanned aerial vehicle adopts a plurality of independent liquid storage tanks, realizes separate storage of liquid medicine, sets a mixing chamber to realize mixing of liquid medicine according to needs during operation, realizes accurate pesticide application, satisfies diversified agricultural production requirements, sets a plurality of spray heads to realize wide-area and uniform spraying coverage, reduces use cost and improves pesticide spraying efficiency; the support legs at the bottom of the machine body adopt a telescopic structure, can be flexibly adjusted in extension length according to different terrain heights, enhance adaptability to complex terrain and guarantee stability of operation; the design of the integrated machine body makes the structures closely combined in space and mutually cooperative in function, saves space and enhances stability of the overall structure. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic view of the utility model embodiment;

[0029] Figure 2 is a longitudinal section view along A;

[0030] Figure 3 is an enlarged view of B of Figure 2

[0031] Figure 4 is a structural schematic view of the spraying system;

[0032] Figure 5 is a connection schematic view of the stirring blade and the stirring shaft.

[0033] BRIEF DESCRIPTION OF DRAWINGS: 1, unmanned aerial vehicle body; 2, liquid storage tank; 3, mixed spraying mechanism; 301, mixing chamber; 3011, bottom inverted conical structure of the mixing chamber; 3012, bottom defect part of the inverted conical structure; 302, stirring device; 3021, stirring blade; 3022, stirring shaft; 3023, stirring motor; 303, liquid pump; 3031, outlet pipe of the liquid pump; 304, spray head; 305, spraying main pipe; 3051, convex part in the middle position of the spraying main pipe and matched with the bottom defect part of the inverted conical structure; 306, spraying branch pipe; 4, support leg; 5, liquid inlet. DETAILED DESCRIPTION

[0034] The utility model will be further described in detail below in combination with the drawings. Figures 1-5 The utility model will be further described in detail below in combination with the drawings.

[0035] The utility model embodiment discloses a mixed pesticide spraying unmanned aerial vehicle, comprising:​

[0036] The unmanned aerial vehicle body 1 is used for flying to a set place, and comprises a flight assembly and a power system. The flight assembly generally adopts a rotary wing flight assembly or a fixed wing flight assembly; the power system generally adopts an electric power system or a fuel power system; preferably, a four-rotor structure in the rotary wing flight assembly is selected, and an electric power system powered by a battery is adopted; the arms of the four-rotor structure are generally made of high-strength lightweight materials such as carbon fiber or aluminum alloy, and are centrally symmetrically distributed; an electric motor and a propeller are installed at the end of each arm; the rotation speed of the propeller is adjusted by controlling the rotation speed of each electric motor, so as to change the lift and torque generated by each rotor, realize the driving of the unmanned aerial vehicle, and flexibly fly above the farmland, accurately control the flight height and speed, and adapt to the planting density and terrain changes of different crops, which will not be described here.

[0037] A plurality of liquid storage tanks 2 are arranged on the unmanned aerial vehicle body 1 and are used for storing liquid medicine respectively. The liquid storage tanks 2 are provided with a plurality of liquid storage tanks 2, which can store different types or the same type of liquid medicine, so as to avoid the premature mixing of the liquid medicine and reduce the drug effect. The capacity of the liquid storage tank 2 is determined according to the load capacity of the unmanned aerial vehicle and the working area. The material of the liquid storage tank 2 needs to have the characteristics of corrosion resistance, pressure resistance and light weight. Common materials include high-density polyethylene or glass steel, which will not be described here.

[0038] The mixing and spraying mechanism 3 is used for receiving and mixing the liquid medicine of the liquid storage tank 2 and then spraying. The mixing and spraying mechanism 3 is an important part of the agricultural spraying unmanned aerial vehicle, which can control the mixing and spraying of different types or the same type of liquid medicine, which will not be described here.

[0039] In the embodiment, the liquid storage tank 2 is communicated with the mixing and spraying mechanism 3, and can be controlled to be closed or to deliver liquid medicine to the mixing and spraying mechanism 3. The liquid storage tank 2 and the mixing and spraying mechanism 3 are communicated through a liquid conveying pipeline. Valves such as ball valves, butterfly valves and electromagnetic valves are generally installed on the liquid conveying pipeline. When it is needed to close the liquid delivery of a certain liquid storage tank 2, the valve on the corresponding pipeline can be closed to cut off the liquid flow. In the case of accurate control, an electric valve can be used, and the opening and closing of the valve can be remotely or automatically controlled by a control system, which will not be described here. A conveying pump such as a centrifugal pump, a plunger pump and a diaphragm pump is generally installed on the liquid conveying pipeline. By starting the conveying pump, a pressure difference is generated to suck the liquid medicine in the liquid storage tank 2 into the pipeline and deliver it to the mixing and spraying mechanism 3. According to the actual demand, the conveying amount and conveying speed of the liquid medicine can be controlled by adjusting the parameters such as the rotation speed and stroke of the conveying pump, which will not be described here.

[0040] In the embodiment, the mixing and spraying mechanism 3 comprises a mixing and stirring chamber, a conveying system and a spraying system.

[0041] A mixing chamber 301 is configured to controllably receive the liquid medicine from the liquid tank 2. The mixing chamber 301 provides a space for mixing the liquid medicine from the liquid tank 2. The mixing chamber 301 is generally in a cylindrical or conical shape to avoid right angles or sharp corners, so that the liquid flows more smoothly during stirring and ensures uniform mixing. Details are not described herein again.

[0042] A stirring device 302 is arranged in the mixing chamber 301 to stir the liquid medicine. The stirring device 302 generally adopts a paddle stirring device or a turbine stirring device. The paddle stirring device mainly includes a motor, a stirring shaft and a paddle. The motor drives the stirring shaft to rotate, and then drives the paddle to rotate in the liquid medicine. The shape and angle of the paddle are designed to push the liquid medicine to flow in the axial and radial directions, so as to mix the liquid medicine at different positions. Details are not described herein again. The turbine stirring device has a turbine as a core component. The turbine generally includes a plurality of curved blades and is installed on the stirring shaft. When the motor drives the stirring shaft to rotate, the turbine rotates at a high speed. Under the action of the turbine blades, the liquid medicine forms a high-speed radial flow. At the same time, a low-pressure area is generated in the central region of the turbine, so that the surrounding liquid medicine rapidly supplements to the center to form a strong circulating flow. This high-speed and strong circulating flow can quickly mix different types of liquid medicine uniformly. Details are not described herein again.

[0043] The conveying system includes:

[0044] A liquid medicine pump 303 is configured to convey the liquid medicine in the liquid tank 2 to the mixing chamber 301. The liquid medicine pump 303 is a key equipment for conveying the liquid medicine in the liquid tank 2 to the mixing chamber 301. Common liquid medicine pumps 303 include peristaltic pumps and centrifugal pumps. The peristaltic pump conveys the liquid medicine by rollers extruding an elastic pipeline. The peristaltic pump has the advantages of accurate flow and good sealing, and is suitable for operation scenarios with high requirements for liquid medicine flow control. The centrifugal pump conveys the liquid medicine by using the centrifugal force generated by the rotation of the impeller. The centrifugal pump has large flow and high pressure, and is suitable for situations requiring rapid conveying of a large amount of liquid medicine. The liquid medicine pump 303 is generally installed near the liquid tank 2. When selecting the liquid medicine pump 303, the spraying requirements of the unmanned aerial vehicle and the capacity of the liquid tank 2 need to be considered. Details are not described herein again.

[0045] The spraying system includes:

[0046] A plurality of spray heads 304 are connected to the mixing chamber 301 for spraying the mixed liquid to the designated location. The spray heads 304 are connected to the mixing chamber 301 through a precise pipeline system and a flow control device to realize stable connection with the mixing chamber 301. The uniformly mixed liquid in the mixing chamber 301 is accurately sprayed to the designated location according to the preset spraying angle, flow and coverage range to meet the specific production or operation requirements. The spray heads 304 generally adopt centrifugal spray heads, pressure spray heads or fan-shaped spray heads. The layout of the spray heads 304 on the unmanned aerial vehicle body 1 should consider the flight stability, spraying coverage range and spraying uniformity of the unmanned aerial vehicle. For a multi-rotor unmanned aerial vehicle, the spray heads 304 are generally installed on the spray rod at the bottom of the unmanned aerial vehicle body 1. The length of the spray rod and the spacing of the spray heads are designed according to the size of the unmanned aerial vehicle and the spraying width requirements. Details are not described herein.

[0047] In the embodiment, the plurality of liquid storage tanks 2 are fan-shaped cylindrical liquid storage tanks with a fan-shaped cross section. The main body of the mixing chamber 301 is cylindrical. The plurality of fan-shaped cylindrical liquid storage tanks are arranged side by side in the circumferential direction around the mixing chamber 301 to form an overall cylindrical structure. The radius and height of the fan-shaped cylindrical liquid storage tanks are determined according to the top space of the unmanned aerial vehicle body 1 and the liquid storage requirements. Details are not described herein. The outer shell of each fan-shaped cylindrical liquid storage tank is manufactured by an integrated forming process to ensure the integrity and sealing of the structure. The fan-shaped cylindrical liquid storage tank can also be provided with reinforcing ribs to enhance the stability of the liquid storage tank 2 when subjected to pressure. Details are not described herein. As shown in the figure, the plurality of fan-shaped cylindrical liquid storage tanks are arranged side by side in the circumferential direction around the mixing chamber 301 to form an overall cylindrical structure. This design can make full use of the top space of the unmanned aerial vehicle body 1, especially for some regular-shaped unmanned aerial vehicles. This fan-shaped cylindrical liquid storage tank combination can well adapt to the shape of the vehicle body. Compared with other shaped liquid storage tanks 2, it can accommodate more liquid in the same space, improving the liquid storage capacity. At the same time, this cylindrical structure has good stability and strength in mechanics, can uniformly disperse the pressure generated by the liquid to each part, and avoids the risk of local pressure concentration.

[0048] In this embodiment, the stirring device 302 includes a stirring shaft 3022, a plurality of stirring blades 3021 distributed on the stirring shaft 3022, and a stirring motor 3023 for driving the stirring shaft. The stirring blades 3021 are key components that directly act on the liquid medicine, and their shape, size and material are carefully designed according to specific stirring requirements. Common types include paddle blades, turbine blades and other different types, which can efficiently mix and disperse the liquid medicine during stirring. The stirring shaft 3022 serves as a bridge connecting the stirring blades 3021 and the stirring motor 3023. Through high-precision processing technology, the coaxiality and straightness are ensured, and the stability is ensured during high-speed rotation. The power output by the stirring motor 3023 is accurately transmitted to the stirring blades 3021, driving the stirring blades 3021 to rotate at high speed. The stirring motor 3023 is the power source of the entire stirring device 302. According to the parameters such as stirring power and speed, three-phase asynchronous motor, DC motor or servo motor can be selected to provide stable and strong power for the stirring process, ensuring the smooth progress of the stirring operation.

[0049] The stirring blades 3021 are fixed on the stirring shaft 3022 in the radial direction. The stirring shaft 3022 extends through the top of the mixing chamber 301 to the inside of the mixing chamber 301. The stirring motor 3023 is located outside the mixing chamber 301 and is arranged on the top. As shown in the figure, the stirring blades 3021 are axially parallel along the stirring shaft 3022 and are symmetrically distributed about the stirring shaft 3022. This layout can stir the liquid medicine in the mixing chamber 301 in all directions without dead angles, thereby achieving efficient and sufficient mixing effect. The stirring shaft 3022 extends through the top of the mixing chamber 301 to the inside of the mixing chamber 301 and is connected with the stirring motor 3023 located outside the mixing chamber 301 and arranged on the top. The connection method can adopt the coupling connection or belt transmission connection in the prior art. This installation method can drive the stirring blades 3021 on both sides to penetrate into each area of the mixing chamber 301 by the rotation of the stirring shaft 3022, and can also facilitate the connection with the stirring motor 3023 to smoothly transmit power. At the same time, it is also convenient for the installation, debugging and daily maintenance of the stirring device 302.

[0050] In the embodiment, the number of the liquid medicine pumps 303 corresponds to the number of the liquid storage tanks 2, and the liquid medicine pumps 303 are arranged inside the liquid storage tanks 2, and the suction inlets of the liquid medicine pumps 303 are close to the bottoms of the liquid storage tanks 2. The number of the liquid medicine pumps 303 corresponds to the number of the liquid storage tanks 2, so that different types or the same type of liquid medicine can be accurately and independently delivered. Each liquid medicine pump 303 can accurately control the delivery amount of the liquid medicine in the corresponding liquid storage tank 2 according to actual operation requirements, so as to ensure that various liquid medicines are mixed and sprayed according to a preset ratio, and improve the utilization rate of the liquid medicine. The arrangement of the independent liquid medicine pumps 303 enhances the stability of liquid medicine delivery. If one of the liquid medicine pumps 303 fails, it will not affect the delivery of the liquid medicine in the corresponding liquid storage tank 2 by other liquid medicine pumps 303, thereby ensuring the continuity of the spraying operation. Details are not described herein again.

[0051] As shown in the figure, the liquid medicine pump 303 is arranged inside the liquid storage tank 2, and the suction inlet of the liquid medicine pump 303 is close to the bottom of the liquid storage tank 2. This layout can fully utilize the gravity to assist the delivery of the liquid medicine. Before the liquid medicine pump 303 is started, the liquid medicine naturally flows to the suction inlet of the liquid medicine pump 303 under the action of gravity, thereby reducing the liquid suction resistance when the liquid medicine pump 303 is started, reducing the starting load of the liquid medicine pump 303, prolonging the service life of the liquid medicine pump 303, and making the liquid medicine pump 303 apply pressure to the liquid medicine. During the downward delivery of the liquid medicine, the gravity and the pump body pressure are in the same direction, which improves the delivery efficiency and stability of the liquid medicine, and ensures that the mixing chamber 301 can obtain stable liquid medicine supply, thereby laying a foundation for realizing uniform spraying.

[0052] In the embodiment, the bottom of the mixing chamber 301 is in a reverse conical structure 3011. As shown in the figure, the reverse conical structure 3011 makes the bottom of the mixing chamber 301 in a converging shape. After the mixing of the liquid medicine is completed, the liquid medicine in the mixing chamber 301 can naturally converge to the bottom under the action of gravity, so as to be quickly and completely discharged through the outlet pipeline in the subsequent process, thereby minimizing the liquid medicine residue. Details are not described herein again.

[0053] The spraying system further comprises a spraying main pipe 305 and spraying sub-pipes 306, the middle part of the spraying main pipe 305 is provided with a protruding part 3051 matched with the bottom defect part 3012 of the inverted cone structure, the spraying sub-pipes 306 are connected with the spraying main pipe 305, and the number of the spraying sub-pipes 306 corresponds to the number of the spray heads 304, as shown in the figure, the middle part of the spraying main pipe 305 is provided with the protruding part 3051 matched with the bottom defect part 3012 of the inverted cone structure, the protruding part 3051 is tightly connected with the bottom defect part 3012 of the inverted cone structure through thread connection or clamp connection, so as to ensure stable connection and good sealing, and prevent liquid medicine from leaking, which will not be described here.

[0054] In the embodiment, the unmanned aerial vehicle body 1 further comprises a plurality of telescopic support legs 4, the length of the support leg 4 is adjusted through an adjusting mechanism, at present, the adjusting mechanism mainly comprises a threaded adjusting mechanism and a hydraulic adjusting mechanism, the threaded adjusting mechanism comprises a screw rod, a nut and a guide part, the screw rod is usually connected with the fixed part of the support leg 4, and the nut is connected with the telescopic part, when the nut is rotated, the nut moves up and down along the screw rod due to the transmission of the thread, thereby driving the telescopic part of the support leg 4 to extend or retract, so as to adjust the length of the support leg 4; the hydraulic adjusting mechanism comprises a hydraulic cylinder, a hydraulic pump, an oil tank and a control valve, etc., the hydraulic cylinder is the core component for adjusting the length of the support leg 4, mainly comprising a cylinder barrel, a piston and a piston rod, etc., when the hydraulic pump delivers the hydraulic oil in the oil tank to the rodless cavity of the hydraulic cylinder through the control valve, the pressure of the hydraulic oil drives the piston, so that the piston rod extends, thereby increasing the length of the support leg 4, on the contrary, when the hydraulic oil flows back to the oil tank from the rodless cavity of the hydraulic cylinder, the piston rod retracts under the action of gravity or external force, thereby shortening the support leg 4, so as to adjust the length of the support leg 4; the support legs 4 are installed in parallel along the length direction of the unmanned aerial vehicle body 1, and can provide stable support in the main stress direction of the unmanned aerial vehicle, when the unmanned aerial vehicle takes off or hovers, the gravity is mainly transmitted to the support legs 4 through the unmanned aerial vehicle body 1, and this layout makes the support force uniformly distributed on the bottom of the unmanned aerial vehicle body 1, thereby effectively preventing the unmanned aerial vehicle from tilting or overturning in the length direction; a pair of support legs 4 with the same size are consistent in structure and performance, which can ensure that the two support legs 4 are uniformly stressed when bearing the load, avoid uneven stress caused by the difference between the support legs 4, and be beneficial to maintaining the stability of the unmanned aerial vehicle and reducing the risk of structural damage caused by excessive local stress, which will not be described here.

[0055] In this embodiment, the top of the liquid storage tank 2 is provided with a liquid inlet 5, which is located at the side of the top of the liquid storage tank 2 at a designated position, so as to facilitate the input of different types or the same type of liquid medicine into the liquid storage tank 2, and the diameter of the liquid inlet 5 is designed according to the actual demand, which can not only ensure the rapid flow of the liquid medicine, but also prevent the liquid medicine from splashing or overflowing due to the too large diameter, and the liquid inlet 5 is usually equipped with a sealing device matched therewith, such as a sealing cover or a valve, which can effectively prevent foreign matters from entering the liquid storage tank 2 when no liquid is input, so as to ensure the purity and stability of the liquid medicine in the liquid storage tank 2, which will not be described here; the outlet pipe 3031 of the liquid pump enters the mixing chamber 301 through the top of the liquid storage tank 2, and the outlet pipe 3031 of the liquid pump operates in a set path, which extends from the top, passes through the top of the liquid storage tank 2 in a clever way, and finally reaches the mixing chamber 301, which ensures that the liquid medicine can be smoothly and efficiently delivered from the liquid pump 303 to the mixing chamber 301 under the driving of pressure, and the connection part of the outlet pipe 3031 of the liquid pump and the top of the liquid storage tank 2 can adopt a sealing connection mode, such as flange connection supplemented by a rubber sealing ring, which can effectively prevent the liquid medicine from leaking during the delivery process, and ensure the stability and safety of the operation.

[0056] In this embodiment, the overall cylindrical structure is located at the top center of the unmanned aerial vehicle body 1, and the overall cylindrical structure is arranged at the top center of the unmanned aerial vehicle body 1, and such a spatial layout not only maintains the balance and symmetry of the unmanned aerial vehicle in appearance, but also maximizes the use of the space at the top of the unmanned aerial vehicle, and helps to maintain the stability of the center of gravity of the unmanned aerial vehicle during flight, so as to ensure that the unmanned aerial vehicle body 1 can maintain good controllability and stability during the flight process, whether it carries or delivers liquid medicine or performs subsequent spraying operation, which lays a solid foundation for accurately and efficiently completing various tasks.

[0057] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting, and although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. A pesticide spraying drone, characterized in that: include: Unmanned aerial vehicles (UAVs) are used to fly to a designated location. Several liquid storage tanks are installed on the drone body to store the medicine solution; A mixing spraying mechanism is used to receive and mix the medicine from the storage tank and then spray it. The mixing and spraying mechanism includes a mixing chamber, a conveying system, and a spraying system. The mixing chamber includes: A mixing chamber for controlled reception of the drug solution from the storage tank; A stirring device, located within the mixing chamber, stirs the medicinal liquid; The conveying system includes: A liquid pump is used to deliver the liquid medicine in the storage tank to the mixing chamber; The spraying system includes: Several nozzles are connected to the mixing chamber for spraying the mixed medicine solution to a designated location.

2. The pesticide mixing and spraying drone according to claim 1, characterized in that: The storage tank is connected to the mixing and spraying mechanism and can be controlled to shut down or supply liquid to the mixing and spraying mechanism.

3. The pesticide mixing and spraying drone according to claim 1, characterized in that: Several of the liquid storage tanks are sector-shaped cylindrical liquid storage tanks with a sector-shaped cross-section. The main body of the mixing chamber is cylindrical. Several of the sector-shaped cylindrical liquid storage tanks are arranged side by side along the circumference around the mixing chamber to form an integral cylindrical structure.

4. The pesticide mixing and spraying drone according to claim 1, characterized in that: The stirring device includes a stirring shaft, multiple stirring blades distributed on the stirring shaft, and a stirring motor for driving the stirring shaft. The stirring blades are fixed to the stirring shaft in a radial direction. The stirring shaft extends downward through the top of the mixing chamber into the interior of the mixing chamber. The stirring motor is located outside the mixing chamber and is set at the top.

5. The pesticide mixing and spraying drone according to claim 1, characterized in that: The number of the liquid pumps corresponds to the number of the liquid storage tanks, and they are located inside the liquid storage tanks, with the suction port of the liquid pumps near the bottom of the liquid storage tanks.

6. The pesticide mixing and spraying drone according to claim 1, characterized in that: The bottom of the mixing chamber has an inverted conical structure; The spraying system also includes a main spray pipe and spray branch pipes. The main spray pipe has a protrusion in the middle that matches the bottom defect of the inverted conical structure. The spray branch pipes are connected to the main spray pipe, and the number of spray branch pipes corresponds to the number of nozzles.

7. The pesticide mixing and spraying drone according to claim 1, characterized in that: The drone body also includes several retractable support legs.

8. The pesticide mixing and spraying drone according to claim 1, characterized in that: The top of the storage tank is provided with an inlet; the outlet pipe of the drug pump enters the mixing chamber through the top of the storage tank.

9. A pesticide mixing and spraying drone according to claim 3, characterized in that: The overall cylindrical structure is located at the top center of the unmanned aerial vehicle.

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