Two-piece type floating ball valve convenient to start and stop

The utility model discloses a two-piece type floating ball valve convenient to start and stop, which belongs to the technical field of ball valves and comprises a valve body, connecting blocks are fixedly arranged on the left side and the right side of the valve body, a valve ball is rotatably arranged in the middle of the valve body, a bearing groove is formed in the middle of the upper end of the valve ball, a square block is fixedly arranged on the inner bottom surface of the bearing groove, and a connecting rod is fixedly arranged at the top of the square block. The upper end of the connecting rod penetrates out of the valve body and is provided with a mounting block, the mounting block is circular, the upper end of the mounting block is provided with a start-stop assembly, an inner hexagonal hole is formed in the upper end face of a U-shaped inner threaded cylinder, so that a worker can operate only by holding a specific tool, a vertical clamping strip is clamped into a second clamping groove, and a U-sh