Novel external control sealing ball valve

The utility model belongs to the technical field of sealing ball valves, and particularly relates to a novel external control sealing ball valve which comprises a valve body, a valve rod is installed in the middle of the valve body, a handle is fixedly installed on the top of the valve rod, an outer ring is fixed to the top of the valve body, the valve rod is located in the middle of the outer ring, and a sliding groove in the inner wall of the outer ring slides corresponding to a sliding strip on the outer wall of the inner ring. A top disc is clamped and fixed to the top of the inner ring through a limiting structure, three sets of clamping columns are arranged on the top face of the top disc, and the three sets of clamping columns are clamped corresponding to the head of the handle. The inner ring is lifted, so that the sliding strips slide in the sliding grooves of the outer ring, the three sets of clamping columns of the top disc are limited corresponding to the handle head, meanwhile, the inner ring and