| 摘要 |
An automatic solar powered flush valve by which sand or gravel may be quickly and efficiently flushed from piping associated with a center pivot irrigation system. The valve, when moved to an open position, provides a fully open port which enables rapid discharge water flow to flush sand and gravel from the piping in a very short time thus enabling the valve to be closed quickly in order to save irrigation water. The valve includes a movable ball valve combined with a rotatably driven eccentric which moves the ball to a closed position on a valve seat and permits the ball to move away from the valve seat when the eccentric is rotated to a position to permit such movement of the ball valve. The eccentric is driven by an electric motor powered by a battery charged by a solar panel and a timer controls the frequency and duration of each cycle of opening and closing of the valve.
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