MOTOR OPERATED BALL VALVE ACTUATOR

摘要

The present invention relates to an electrically-powered ball valve actuator capable of opening or closing an electrically-powered ball valve to interrupt a fluid. The actuator having a main shaft rotated by a rotating force of a reduction motor to control the opening/closing of the electrically-powered ball valve includes a driving unit body and a driving unit cover providing a receiving space of the reduction motor; a servo gear provided in the receiving space and connected to a rotation shaft of the reduction motor to be able to rotate; a main gear meshed with the servo gear and connected to the main shaft to transmit the rotating force of the reduction motor to the main shaft; a switch pushing portion protruding from one surface of the main gear, and formed in a pair of fan shapes opposite to each other on the basis of a center angle; a micro switch connected to the fan shape of the switch pushing portion along an arc to output a control signal; and a control unit receiving the control signal from the micro switch, and having a power circuit to control ON/OFF of the reduction motor. The arc of the switch pushing portion is further provided with a pushing extending portion outwardly protruding to extend an operating area of the micro switch. Therefore, the electrically-powered ball valve is reliably opened or closed.