| 摘要 |
An agricultural chemicals sprinkler for extensive spray is provided to install a pivoting duct with a rotary joint as a medium to control the horizontal position of the pivoting duct within a broad range. An agricultural chemicals sprinkler for extensive spray includes a fixed duct(100), a rotary joint, a pivoting duct(300), a duct pivoting device(400) and a spray duct(500). A fan(6) is installed on the lower part of the fixed duct. A pivoting support having a ventilation path is integrally attached to the upper end of the fixed duct. The pivoting duct is installed on the upper part of the fixed duct. A coupling holder installed inside the pivoting duct is integrally fitted into the outer side of a rotary shaft. The duct pivoting device provides rotary force for an operation pulley(404) installed on the pivoting duct to control the position of the pivoting duct freely.
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