Pneumatic ball valve that switches of molecular sieve dehydration

The utility model relates to a ball valve. Pneumatic ball valve that switches of molecular sieve dehydration includes the pneumatic ball valve main part, and the pneumatic ball valve main part includes the valve body, is equipped with spheroid and disk seat in the valve body, and a valve gap is connected to the valve body upper end, still is equipped with the valve rod in the valve body, and spheroidal upper end is inlayed and is equipped with the roller, and the spheroid is continuous with the roller welding, and the lower extreme of valve rod is equipped with the wedge type face that is parallel to each other, and the wedge type face is the contact surface of roller and valve rod, spheroidal tip down is equipped with the gudgeon of evagination, and a sphere is personally submitted to the lower extreme of gudgeon to the lower terminal surface of gudgeon is first sphere, is equipped with on the spheroid to seal up the face with the disk seat complex, and sealed face is the second sphere, and first sphere is t