Eccentric semi-ball valve adopting hard seal

The utility model discloses an eccentric semi-ball valve adopting hard sealing, and belongs to the technical field of valves. Comprising a valve body, a flange, a ball body, a spherical crown, a sealing ring and a valve seat, the sealing ring is a stainless steel ring, the valve seat is a copper ring, an annular step from bottom to top is arranged at the joint of the ball body and the spherical crown, the sealing ring is arranged on the annular step in a sleeving mode, the shape of the inner side of the sealing ring is matched with that of the annular step, a pressing plate is coaxially arranged on the spherical crown, and the pressing plate is a circular ring and abuts against the upper side of the sealing ring to fix the sealing ring to the ball body. A groove hole is coaxially formed in the flange, a gland capable of sealing the groove hole is arranged in the groove hole, the gland is a circular ring matched with the valve seat, a protruding ring is coaxially arranged at the upper end of the valve seat out