Valve cover of ball valve

The utility model relates to the field of ball valves, in particular to a valve cover of a ball valve, which comprises a cover body, a damping component and a groove. The damping assembly comprises a fixing block, an outer rod, an inner rod, a clamping block and a spring. A fixing block is arranged in the cover body, and an outer rod is arranged at the outer end of the fixing block; the inner rod is telescopically connected in the outer rod; a connecting block is arranged at the outer end of the inner rod; the clamping block is arranged at the outer end of the connecting block; the spring is sleeved outside the inner rod; a valve body is arranged outside the cover body; the groove is formed in the inner side of the valve body, and the outer end of the clamping block is movably clamped in the groove; the number of the fixing blocks, the number of the outer rods, the number of the inner rods, the number of the clamping blocks and the number of the springs of the damping assemblies are all multiple. A flange a i