By relocating the pump within the machine’s overall architecture and making the fan groups vertically adjustable, Nobili’s technicians focused on two main improvements when developing the new “H-Fan” sprayers. These are towed machines, ISOBUS-compatible, designed for crop protection in orchards and vineyards, and have been recognized as a technical innovation at Eima 2024. Equipped with 1,000-liter capacity tanks, they feature a hydraulically driven fan mounted on a height-adjustable system. This allows for vertical movements of up to 700 millimeters, increasing the sprayer’s adaptability to the shape of the crop canopy, ensuring precise treatment even on the highest parts of the plants.
Thanks to the “H-Fan” system’s adjustable height, operators can set the correct working height while adjusting pressures and volumes as needed, aided by structural and functional changes made to the diaphragm pump. Powered by the tractor’s PTO, the pump has been positioned on the steering drawbar linked to the tractor’s lift, ensuring that, unlike traditional two-speed mechanical drives, the fan’s hydraulic motor stays aligned with the fan itself, regardless of the steering angle.
Continuously regulated fan speed
The electronic control of the hydraulic system allows for continuous adjustment of the fan’s rotational speed, from zero to 1,800 rpm, without altering the tractor engine’s speed. Additionally, the fan blade’s reversible rotation simplifies cleaning of the spraying system from leaves and plant debris that usually block the fan’s suction section.
These improvements bring tangible benefits, including the constant alignment of the PTO shaft, which in practice allows operation with lower torque values compared to traditional setups. With these features, the new “H-Fan” sprayers offer an ideal solution for professional viticulture and orchard farming, where farmers and contractors increasingly favor versatile equipment capable of adapting to different row spacings and crop heights.
Title: Nobili sprayers “H-Fan” series, multi-vane effectiveness
Translation with ChatGPT
