China Suppliers Factory Automatic Flight Agricultural Spraying Drone 22L for Fumigation with Dual Centrifugal Nozzles
Product Introduction
Over the farmland, agricultural drones are like intelligent painters equipped with "electronic eagle eyes", completing spraying operations with millimeter-level control accuracy that is comparable to surgical operations. Its RTK differential positioning system can achieve centimeter-level positioning, and with binocular visual obstacle avoidance radar, it can scan the height of crop canopies in real time during flight, so that the nozzle and the leaf surface always maintain the optimal atomization distance of 0.8-1.2 meters - this distance can ensure the uniform adhesion of droplets and avoid the drift and waste of liquid medicine.
With high-precision sensors and intelligent navigation systems, agricultural drones can accurately sense farmland topography, crop growth conditions and other information, thereby achieving precise quantitative spraying of pesticides and fertilizers. It can adjust the dosage and range of spraying according to the needs of crops in different regions, avoiding problems such as missed spraying and repeated spraying that may occur in traditional spraying methods, which not only improves resource utilization efficiency but also reduces environmental pollution.
Specification parameters
| Model | AL4-22 |
| Pesticide Tank | 22L |
| Structure | Umbrella foldable |
| Net weight | 19.5 kg |
| Take-off weight | 55 kg |
| Battery capacity | 14s 22000 mAh*1pc |
| Spray speed | 0-10 m/s |
| Spray width | 7-9 m |
| Nozzle No. | 8 pcs |
| Spray flow | 3.5-4 L/min |
| Spray efficiency | 9-12 hectares/h |
| Wind resistance | 10m/s |
| Drone Spread size | 2025*1970*690 mm |
| Drone Folded size | 860*730*690 mm |
High pressure nozzle operation mode

High-pressure nozzle
The high-pressure nozzle relies on a plunger pump or a diaphragm pump to pressurize the liquid medicine to 0.5-2MPa, and sprays it out at high speed through a nozzle with a tiny aperture (0.3-1mm), forming a high-kinetic energy penetrating mist flow. Its core advantage lies in the efficient coverage of complex scenes.

Centrifugal nozzle
The centrifugal nozzle generates centrifugal force through the high-speed rotating impeller, which throws out the liquid medicine and breaks it into uniform droplets. The core advantage lies in the precise and controllable atomization effect and the uniform droplet size (50-200μm). By adjusting the impeller speed (usually 3000-10000 rpm), the droplet size can be accurately controlled to avoid the uneven droplet problem caused by pressure fluctuations in traditional high-pressure nozzles.
Centrifugal nozzle operation

Suitable for a variety of scenarios, efficient and convenient work
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Final inspection before shipment


Customers Feedback

Frequently Asked Questions (FAQ)
Q1: What is the optimal spraying height and distance for agricultural drones?
A1: The drone maintains an optimal atomization distance of 0.8 to 1.2 meters from the crop canopy. This ensures uniform adhesion of droplets and minimizes pesticide drift and waste.
Q2: How accurate is the flight navigation and positioning system?
A2: The drone utilizes an RTK differential positioning system that allows centimeter-level accuracy during flight, combined with binocular obstacle avoidance radar to scan canopy heights in real time.
Q3: What is the difference between the high-pressure nozzle and the centrifugal nozzle?
A3: The high-pressure nozzle relies on a pump to pressurize liquid to 0.5-2MPa, providing high kinetic energy penetration. The centrifugal nozzle utilizes a high-speed rotating impeller (3000-10000 rpm) to break the liquid into highly uniform and controllable 50-200μm droplets.
Q4: What are the main specifications of the AL4-22 model?
A4: The AL4-22 features a 22L pesticide tank, a spray width of 7-9 meters, 8 nozzles, and has a spray efficiency of 9-12 hectares per hour. Its take-off weight is 55 kg.
Q5: How portable is the drone for transport?
A5: The drone features an umbrella foldable structure. Its unfolded dimensions are 2025*1970*690 mm, which folds down to 860*730*690 mm, making it highly convenient to transport.
Q6: Can the drone operate under windy conditions?
A6: Yes, the drone is designed with high wind resistance of up to 10 m/s, ensuring stable flight and consistent spraying performance in diverse environments.





