The invention relates to a far-range air-supply type spraying device, which comprises an engine base and a main control
station, wherein a cross rotating support and a rotating driving oil cylinder are arranged on the engine base, and the bottom of the cross rotating support is in power connection with the rotating driving oil cylinder. A revolving platform and a pitching driving oil cylinder arearranged on the cross rotating support, a revolving platform stand is erected on the cross rotating support, and the end head of a
piston rod of the pitching driving oil cylinder is hinged with the bottom of the revolving platform. An air supply device and a spraying device are arranged on the revolving platform, and the air supply device is provided with an air funnel. The air outlet of the air funnel is provided with a diffusing
pipe, and the center of the air funnel is provided with a high-pressure axial flow fan. The spraying device comprises an annular distributing
pipe, a radial plungerpump, an electromotor, a liquid
medicine box and a water box, and an atomizing
nozzle is installed on the annular distributing
pipe. A liquid absorbing port of the radial
plunger pump is communicatedwith a liquid supply port of the liquid
medicine box through a liquid inlet pipeline, and the liquid absorbing port of the radial
plunger pump is communicated with a
water supply port of the water box through a
water delivery pipeline. A liquid discharging port of the radial
plunger pump is communicated with the annular distributing pipe through a liquid outlet pipeline.