Ball valve with positioning function

The utility model discloses a ball valve with a positioning function, relates to the technical field of ball valves, and aims to solve the problem that a certain labor intensity exists in the working process of mounting the ball valve by a user due to the fact that the ball valve needs to be lifted and mounted for a long time when a pipeline is always at a certain height from the ground. A control end is arranged in the middle of the top of the peripheral face of the valve body, symmetrically-distributed connecting pipelines are arranged on the two sides of the valve body, a supporting seat is fixed to the bottom of the peripheral face of the valve body, a movable shaft is rotationally connected to the middle of the supporting seat in a penetrating mode, and symmetrically-distributed inner screw holes are formed in the two sides of an inner cavity of the movable shaft. The interior of the inner screw hole is in threaded connection with a threaded block, and limiting rods which are symmetrically distributed ar