FLOW RATE REGULATING VALVE AND FLUID CONTROL APPARATUS USING THE SAME

• Main Authors: KOBAYASHI Keigo, NAGAO Masakazu, DOHI Ryousuke, YAKUSHIJIN Tadayuki
• Format: Patent
• Language: English
• Published: 28.11.2019
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

FLOW RATE REGULATING VALVE AND FLUID CONTROL APPARATUS USING THE SAME To provide a flow rate regulating valve capable of detecting a state where a flow path is fully closed even when there is no lead wire or the like for detecting the state where the flow path is fully closed. A flow rate regulating valve () is a fluid regulating valve including a valve body (49) for opening and closing fluid flow paths (61, 62) provided in a body (60) and includes an actuator unit (3) for moving the valve body (49), and the actuator unit (3) includes a drive motor (10), a slider (30) moved by a rotation of the motor (10), a cylindrical body (40) mounted on the slider (30), and a shaft (47) interlocked with the cylindrical body (40) and provided with the valve body (49) fixed to a distal end thereof. The motor (10) is a stepping servomotor, and has a pressing control function for moving the valve body in the closing direction at a continuous rated torque until a torque value becomes equal to or higher than a set value by a closed loop caused by a signal of the encoder, and detection of a closed position is performed by the pressing control function. FIG. 1 21