Semi-ball valve with novel composite sealing structure

The utility model discloses a semi-ball valve with a novel composite sealing structure, which belongs to the field of semi-ball valves and comprises a valve body, the top of the valve body is in threaded connection with a valve cover through a mounting bolt, the bottom of the valve body is in threaded connection with a lower end cover through a fixing bolt, and an upper valve shaft is arranged in the valve cover. The bottom end of the upper valve shaft is in transmission connection with a valve clack; by arranging an upper valve shaft, a valve cover, a valve body, a valve seat, a valve clack sealing ring, a valve clack, a lower valve shaft, a lower end cover, a pressing ring, a screw, a first sealing strip, an O-shaped sealing ring, a sealing layer, an inner ring and a second sealing strip, in the using process of the semi-ball valve, soft and hard composite sealing is adopted for a main sealing part, the sealing reliability is improved, and the service life of the valve is prolonged; the problems that due to