| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a flow rate control device by the motor driving of a hydraulic valve which is simple, inexpensive, and has high reliability.SOLUTION: A flow rate control device by the motor driving of a hydraulic valve, is composed of a flow rate controlling throttle valve 2 for controlling a flow rate, a hydraulic valve rotating gear 3 for rotating the flow rate controlling throttle valve 2, a motor 4 for rotating the hydraulic valve rotating gear 3, an opening/closing state detection gear 5 for electrically detecting an opening/closing state of the flow rate controlling throttle valve 2, and a fully-opening detection limit switch 6 and a fully-closing detection limit switch 7 for electrically detecting a position of the opening/closing state detection gear 5.</p> |
