The invention provides a three-in-one multifunctional spraying
machine and a three-
station conversion method. The three-in-one multifunctional spraying
machine comprises a spraying rod conversion device, a spraying device, an
airflow auxiliary device and a
medicine liquor recycling device, wherein the spraying rod conversion device is used for respectively controlling each functional frame by a hydraulic
system so as to achieve lifting, descending and folding of a spraying rod as well as conversions between different heights and different spraying
modes; the spraying device is used for conveying the
medicine liquor from a
medicine liquor box to a
diaphragm pump and conveying the medicine liquor to each
nozzle through a conveying
pipe so as to spray the medicine liquor; the
airflow auxiliary device is used for forming uniform air curtain, so that the permeability and deposition uniformity of spraying
fog drops; the medicine liquor recycling device is used for filtering residual medicine liquor dripped from
crop leaves by filtering holes in a recycling fabric, gathering the medicine liquor to a collecting
pipe and recycling the residual medicine liquor to the medicine liquor box through the
diaphragm pump so as to increase the
utilization rate of the medicine liquor. According to the invention, three spraying methods of a spraying rod method, a tunnel method and a profiling method are integrated; and structural conversion functions of
field crop spraying rod type spraying, horticultural
crop tunnel type spraying and
orchard profiling type spraying are achieved.