Ultralow-temperature hard sealing track ball valve

The invention relates to the technical field of orbital ball valves, and provides an ultralow-temperature hard sealing orbital ball valve which comprises a shifting mechanism arranged in a three-way ball frame, the shifting mechanism comprises two supporting and guiding parts, a moving part, a shifting part and a push-pull part, and when an actuator rotates a shaft rod, the shifting part is driven by the moving part to rotate; the shaft rod can drive the stirring component to rotate, the rotating stirring component can push the push-pull component, and therefore the ball plug can be driven to move, and the ball plug can plug or open the communication opening. The guide rotating mechanism is arranged on the inner side of the three-way ball frame, when the ball plug gets close to the communicating opening, under the action of the guide rotating mechanism, the ball plug can be driven to rotate, the communicating opening is blocked or opened, and due to the fact that the ball plug moves while rotating, friction b