Experimental study on lawn sprinkler for energy-saving and variable range of the precision spraying

For solving the problem of high energy consumption of variable nozzle, the experimental study on lawn sprinkler for energy-saving and variable range of the precision spraying were carried out. In the case of square spraying, the functions of control period between nozzle inlet pressure, converter frequency and time were determined by tests. The motor frequency was regulated by the converter; the needed and outlet pressure were equal. The test was carried out using LabVIEW software, and motor frequency of one period was controlled. The spray range of nozzle was changed with frequency, and square spraying was achieved. The test and theoretical value were in good agreement, the average deviations were 4.2%.