| 摘要 |
An impact irrigator with controlled return, which comprises a rapid return deflector (28) disposed at the end of a lever (27) which rocks in the vertical plane to the side of the propelling tube (1), and is controlled by a motion reversal linkage (20, 19, 21, 24, 25, 26), the rocker lever (27) being slidably mounted on its pivotal shaft (77) in such a manner as to move along the shaft (77) and away from the propelling tube (1) when the deflector (28) is immersed in the jet; elastic reaction and repositioning elements (34) for the lever (27) are provided, and this latter comprises a cam (36) arranged to rest on the jet outlet nozzle (13) in order to regulate the degree of immersion of the deflector (28) as a function of the movement. |
