Electric ball valve and method for manufacturing electric valve

An electric ball valve, comprising a driving part, a transmission part, a valve core ball and a valve body, wherein the valve core ball is accommodated in an inner cavity formed by the valve body, the valve core ball has an inner channel, the driving part is in transmission connection with the transmission part, the valve body is provided with at least two flow channels for communicating with an outside, the transmission part drives the valve core ball to move, and the inner channel of the valve core ball is configured to allow the at least two flow channels in communication or not in communication or selectively allow one of the flow channels in communication or not in communication, the electric ball valve comprises a magnetic ring and a Hall sensor, the driving part comprises a rotor assembly, and the rotor assembly comprises a shaft part, the transmission part comprises an output shaft and a valve rod, and the shaft part is in transmission connection with the output shaft, the output shaft drives the shaft part to rotate in the circumferential direction, the magnetic ring is mounted on a radial outer circumference of the shaft part, and the electric ball valve further comprises a buffer part, and the buffer part and an end of the shaft part are in direct or indirect contact;

• and
• the output shaft is fixedly connected or limitedly connected to the valve rod, and the valve rod is in transmission connection with the valve core ball.