Ball valve capable of automatically adjusting sealing

The utility model discloses a ball valve capable of automatically adjusting sealing, comprising a valve body and a ball-shaped valve core positioned in the valve body whose water outlet is provided with a seal washer. The water inlet of the valve body is provided with a circular tube bush whose inner part is provided with a round hole in which a spring is arranged. A movable spacer is arranged between the bush and the ball-shaped valve core; the ball-shaped seal of the movable spacer is contacted with the ball-shaped valve core, and the rear end of the movable spacer is inserted into the groove of the bush and contacted tightly with the spring. Compared with prior art, the utility model provides with multiple seal can automatically adjust the seal of the movable spacer and the ball-shaped valve core especially and ensure the great property of the dynamic seal of the valve core; additionally, the valve core has flexible rotation and long service life.