A drone-based liquid spraying device

Abstract

This utility model relates to a drone-mounted liquid spraying device, belonging to the technical field of drone auxiliary equipment. It solves the problem of unstable liquid delivery caused by loose structure in existing spraying devices. The spraying device includes a mounting base, a support frame, a liquid storage tank, a spraying component, and a control module. The mounting base is fixed to the drone. The support frame is fixedly located below the mounting base. The liquid storage tank is fixedly located in the middle of the support frame and is used to load liquid. The spraying component is connected to the liquid storage tank. The control module is used to regulate the working state of the spraying component and is fixed to the support frame. The support frame integrates the liquid storage tank, spraying component, and control module into a whole, improving the overall torsional rigidity. The support frame integrates the originally loose external spraying system into a modular whole, thereby reducing the problem of unstable liquid delivery caused by loose structure.

Description

Technical Field

[0001] This utility model relates to the field of drone equipment technology, and in particular to a drone liquid spraying device. Background Technology

[0002] Drone-based pesticide spraying devices are widely used in agricultural plant protection, forestry pest control, and urban greening. They achieve efficient and low-cost pesticide coverage by being carried by drones. Traditional devices mostly consist of a storage tank, delivery pipe, and nozzle, relying on gravity or a simple pump to drive the flow of pesticide.

[0003] Traditional drone-based pesticide spraying devices often use simple mounting to connect the liquid storage and spraying components to the drone, without a dedicated support frame to position each component. This results in a loose overall structure, which can cause component displacement due to vibration during flight, leading to unstable pesticide delivery. Utility Model Content

[0004] Based on the above analysis, the present invention aims to provide a drone-based liquid spraying device to solve the problem of unstable liquid delivery caused by the loose structure of existing spraying devices.

[0005] This utility model provides a drone-mounted liquid spraying device, including a mounting base, a support frame, a liquid storage tank, a spraying component, and a control module. The mounting base can be fixed to the drone. The support frame is fixedly disposed below the mounting base. The liquid storage tank is fixedly disposed in the middle of the support frame. The liquid storage tank is used to load liquid. The spraying component is connected to the liquid storage tank and is used to atomize the liquid and spray it onto the target area. The spraying component is fixed to the support frame. The control module is used to regulate the working state of the spraying component.

[0006] Furthermore, the spraying assembly includes an infusion pump, an infusion tube, an atomizing nozzle, and a flow regulating valve; the infusion pump input is connected to the drug storage tank, and the infusion pump output is connected to the atomizing nozzle via the infusion tube; the flow regulating valve is installed on the infusion tube and is used to regulate the drug flow rate.

[0007] Furthermore, nozzle mounting brackets are symmetrically arranged on both sides of the bottom of the support frame, the atomizing nozzles are detachably mounted on the nozzle mounting brackets, and the spraying direction of the atomizing nozzles can be adjusted.

[0008] Furthermore, the bottom of the medicine storage chamber is provided with a liquid outlet, and a filter assembly is provided at the liquid outlet. The filter assembly includes a first filter screen and a second filter screen connected in sequence, and the pore size of the second filter screen is smaller than that of the first filter screen.

[0009] Furthermore, the top of the liquid storage chamber is provided with a liquid inlet, and a sealing cap is provided at the liquid inlet, the sealing cap being connected to the liquid inlet by a thread.

[0010] Furthermore, the support frame includes transverse connecting rods and longitudinal support rods, with the longitudinal support rods connected between the transverse connecting rods.

[0011] Furthermore, a reinforcing rib is provided at the connection between the transverse connecting rod and the longitudinal support rod.

[0012] Furthermore, the control module includes a microcontroller, a wireless communication unit, and a sensor group; the wireless communication unit is used to receive control signals from the UAV and transmit them to the microcontroller; the sensor group includes a liquid level sensor and a flow rate sensor, the liquid level sensor is installed in the drug storage tank to detect the remaining drug level, and the flow rate sensor is installed on the infusion tube to detect the drug flow rate; the microcontroller controls the operation of the infusion pump and the flow regulating valve based on the received signals and the detection data from the sensor group.

[0013] Furthermore, the wireless communication unit adopts a Bluetooth or WiFi module, which enables wireless data interaction with the UAV control system.

[0014] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: (1) The drone liquid spraying device of the present invention has a support frame located between the mounting base and the liquid storage chamber, which integrates the liquid storage chamber, spraying components and control module into a whole, thereby improving the overall torsional rigidity. The support frame integrates the originally loose external spraying system into a modular whole, thereby reducing the problems of unstable liquid delivery and uneven spraying caused by loose structure.

[0015] (2) The drone liquid spraying device of this utility model achieves sealing and leak prevention of the liquid storage chamber after adding medicine by the combination of sealing cover and rubber sealing ring, preventing liquid overflow caused by shaking during flight and external moisture intrusion, maintaining constant pressure in the liquid storage chamber, and enabling the atomizing nozzle to supply liquid stably.

[0016] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0017] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0018] Figure 1 This is a schematic diagram of the structure of the drone-based liquid spraying device in this embodiment of the present invention; Figure 2 This is a schematic diagram of the support frame in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the spraying component in an embodiment of the present invention.

[0019] Figure label: 1-Mounting base, 2-Support frame, 21-Nozzle mounting bracket, 22-Horizontal connecting rod, 23-Longitudinal support rod, 24-Reinforcing rib, 3-Drug storage tank, 4-Spraying assembly, 41-Infusion pump, 42-Infusion pipe, 43-Atomizing nozzle, 44-Flow regulating valve. Detailed Implementation

[0020] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0021] Example 1 A specific embodiment of this utility model is as follows: Figure 1 As shown, a drone-based liquid spraying device is disclosed, including a mounting base 1, a support frame 2, a liquid storage tank 3, a spraying component 4, and a control module. The mounting base 1 can be fixed to the drone. The support frame 2 is fixedly located below the mounting base 1. The liquid storage tank 3 is fixedly located in the middle of the support frame 2. The liquid storage tank 3 is used to load liquid. The spraying component 4 is connected to the liquid storage tank 3 and is used to atomize the liquid and spray it onto the target area. The spraying component 4 is fixed to the support frame 2. The control module is used to regulate the working state of the spraying component 4 and is fixed to the support frame 2.

[0022] Mounting base 1 is used to connect support frame 2 to the drone. For example, mounting base 1 is made of carbon fiber composite material. Liquid storage tank 3 is used to store liquid and provide a liquid interface with spraying component 4. At the same time, its outer wall can be fixed to support frame 2 at multiple points, so that the inertial force generated by liquid sloshing is directly absorbed by support frame 2, reducing the attitude disturbance to drone. Spraying component 4 is used to atomize and spray liquid. Control module is used to adjust pump speed and valve opening to achieve variable spraying. Support frame 2 is located between mounting base 1 and liquid storage tank 3. As a core load-bearing component, it can be made of carbon fiber composite material or aluminum alloy. The fixing, fixing or fixing of support frame 2 with other components can be done by bolts or screws. Support frame 2 sets liquid storage tank 3, spraying component 4 and control module as a whole, improving the overall torsional stiffness. Support frame 2 integrates the originally loose external spraying system into a "modular whole", thereby reducing the problems of unstable liquid delivery and uneven spraying caused by loose structure.

[0023] A preferred embodiment of this utility model is as follows: Figure 1 As shown, nozzle mounting brackets 21 are symmetrically arranged on both sides of the bottom of the support frame 2. The atomizing nozzles 43 are detachably mounted on the nozzle mounting brackets 21, and the spraying direction of the atomizing nozzles 43 can be adjusted.

[0024] By symmetrically setting detachable and spray direction adjustable nozzle mounting brackets 21 on both sides of the bottom of the support frame 2, the atomizing nozzle 43 can be quickly disassembled and precisely adjusted in angle, thereby improving the uniformity of spraying and the adaptability of operation.

[0025] In a preferred embodiment of this utility model, the bottom of the liquid storage chamber 3 is provided with a liquid outlet, and a filter assembly is provided at the liquid outlet. The filter assembly includes a first filter screen and a second filter screen connected in sequence. The pore size of the second filter screen is smaller than that of the first filter screen. The pore size of the first filter screen is 0.5-1mm, and the pore size of the second filter screen is 0.1-0.3mm.

[0026] The two-stage filtration structure (0.5-1mm coarse filtration and 0.1-0.3mm fine filtration) is directly integrated into the outlet of the liquid storage chamber 3. It can efficiently intercept impurities of different particle sizes before the liquid enters the pump-nozzle system, reduce the risk of nozzle clogging, and make the flow rate stable and atomization uniform.

[0027] In a preferred embodiment of this utility model, the top of the liquid storage chamber 3 is provided with a liquid inlet, and a sealing cap is provided at the liquid inlet. The sealing cap and the liquid inlet are connected by threads, and a rubber sealing ring is provided between the two.

[0028] The combination of the sealing cap and the rubber sealing ring ensures that the liquid storage chamber 3 is sealed and leak-proof after the drug is added, preventing spillage caused by shaking during flight and the intrusion of external moisture, maintaining a constant pressure inside the liquid storage chamber 3, and ensuring that the atomizing nozzle 43 can supply liquid stably.

[0029] A preferred embodiment of this utility model is as follows: Figure 2 As shown, the support frame 2 includes transverse connecting rods 22 and longitudinal support rods 23. There are at least two transverse connecting rods, which are distributed in parallel at intervals. The longitudinal support rods 23 are vertically connected between the transverse connecting rods 22, and there are at least three longitudinal support rods.

[0030] By vertically fixing (e.g., by welding) at least two parallel transverse connecting rods 22 to at least three evenly distributed longitudinal support rods 23, a box-shaped load-bearing structure is formed, which evenly distributes the concentrated load of the mounting base 1 to the box-shaped load-bearing structure, reducing the problems of flow pulsation and spray drift caused by loose structure.

[0031] Based on this, a reinforcing rib 24 is provided at the connection between the transverse connecting rod 22 and the longitudinal support rod 23. The reinforcing rib 24 has a triangular structure and is fixedly connected to the transverse connecting rod 22 and the longitudinal support rod 23 respectively.

[0032] The triangular reinforcing ribs 24 form rigid nodes at each connection between the transverse connecting rod 22 and the longitudinal support rod 23, which efficiently transfer shear and bending moment loads to the entire support frame 2, improve the torsional stiffness of the support frame 2, and reduce liquid pulse and spray drift caused by micro-deformation of the support frame 2.

[0033] In a preferred embodiment of this utility model, the control module includes a microcontroller, a wireless communication unit, and a sensor group; the wireless communication unit is used to receive control signals from the UAV and transmit them to the microcontroller; the sensor group includes a liquid level sensor and a flow rate sensor, the liquid level sensor is installed in the medicine storage tank 3 to detect the remaining amount of medicine, and the flow rate sensor is installed on the infusion tube 42 to detect the flow rate of the medicine; the microcontroller controls the operation of the infusion pump 41 and the flow regulating valve 44 according to the received signals and the detection data of the sensor group.

[0034] The microcontroller is an STM32F103C8T6, the wireless communication unit is an E22-400T30D, the liquid level sensor is an FL-CP100 (guided pulse) type sensor, and the flow rate sensor is a YF-S201 type sensor.

[0035] In a preferred embodiment of this utility model, the wireless communication unit adopts a Bluetooth or WiFi module, which enables wireless data interaction with the UAV control system.

[0036] Example 2 Embodiment 2 of this utility model is a further improvement based on Embodiment 1, such as... Figure 3 As shown, the spraying assembly 4 includes an infusion pump 41, an infusion pipe 42, an atomizing nozzle 43, and a flow regulating valve 44; the input end of the infusion pump 41 is connected to the medicine storage tank 3, and the output end of the infusion pump 41 is connected to the atomizing nozzle 43 through the infusion pipe 42; the flow regulating valve 44 is installed on the infusion pipe 42 and is used to regulate the flow rate of the medicine.

[0037] The infusion pump 41 provides stable power to pump the liquid medicine out of the liquid medicine storage chamber 3 in a measured amount; the infusion pipe 42 forms a closed channel to deliver the liquid medicine to the atomizing nozzle 43; the flow regulating valve 44 achieves precise flow control by adjusting the cross-sectional area of ​​the pipe; the atomizing nozzle 43 atomizes the pressurized liquid medicine into uniform fine droplets and sprays them in a directional manner. Under the control of the control module, the system can automatically adjust the pump speed and valve opening in real time according to the flight speed, crop height and remaining liquid medicine.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drone-based liquid spraying device, characterized in that, The system includes a mounting base (1), a support frame (2), a liquid medicine storage tank (3), a spraying assembly (4), and a control module. The mounting base (1) can be fixed on the drone. The support frame (2) is fixedly located below the mounting base (1). The liquid medicine storage tank (3) is fixedly located in the middle of the support frame (2). The liquid medicine storage tank (3) is used to load liquid medicine. The spraying assembly (4) is connected to the liquid medicine storage tank (3) and is used to atomize the liquid medicine and spray it onto the target area. The spraying assembly (4) is fixed on the support frame (2). The control module is used to regulate the working state of the spraying assembly (4).

2. The drone-based liquid spraying device according to claim 1, characterized in that, The spraying assembly (4) includes an infusion pump (41), an infusion pipe (42), an atomizing nozzle (43), and a flow regulating valve (44). The infusion pump (41) has its input end connected to the medicine storage tank (3), and its output end is connected to the atomizing nozzle (43) through the infusion pipe (42). The flow regulating valve (44) is installed on the infusion pipe (42) and is used to regulate the flow rate of the medicine.

3. The drone-based liquid spraying device according to claim 2, characterized in that, The support frame (2) has nozzle mounting brackets (21) symmetrically arranged on both sides of the bottom. The atomizing nozzle (43) is detachably mounted on the nozzle mounting bracket (21), and the spraying direction of the atomizing nozzle (43) can be adjusted.

4. The drone-based liquid spraying device according to claim 2, characterized in that, The bottom of the liquid storage chamber (3) is provided with a liquid outlet, and a filter assembly is provided at the liquid outlet. The filter assembly includes a first filter screen and a second filter screen connected in sequence, and the pore size of the second filter screen is smaller than that of the first filter screen.

5. The drone-based liquid spraying device according to claim 4, characterized in that, The top of the liquid storage chamber (3) is provided with a liquid inlet, and a sealing cap is provided at the liquid inlet. The sealing cap is connected to the liquid inlet by a thread.

6. The drone-based liquid spraying device according to claim 1, characterized in that, The support frame (2) includes a transverse connecting rod (22) and a longitudinal support rod (23), the longitudinal support rod (23) being connected between the transverse connecting rods (22).

7. The drone-based liquid spraying device according to claim 6, characterized in that, A reinforcing rib (24) is provided at the connection between the transverse connecting rod (22) and the longitudinal support rod (23).

8. The drone-based liquid spraying device according to claim 2, characterized in that, The control module includes a microcontroller, a wireless communication unit, and a sensor group; the wireless communication unit is used to receive control signals from the UAV and transmit them to the microcontroller; the sensor group includes a liquid level sensor and a flow rate sensor. The liquid level sensor is installed in the medicine storage tank (3) to detect the remaining amount of medicine, and the flow rate sensor is installed on the infusion tube (42) to detect the flow rate of the medicine; the microcontroller controls the operation of the infusion pump (41) and the flow regulating valve (44) according to the received signals and the detection data of the sensor group.

9. The drone-based liquid spraying device according to claim 8, characterized in that, The wireless communication unit uses a Bluetooth or WiFi module, which enables wireless data interaction with the UAV control system.

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