Self-cooling and self-lubricating stop valve

The utility model discloses a self-cooling and self-lubricating stop valve, and belongs to the technical field of control valves. The stop valve comprises a first gland (1), stator (3), rotor (4), a planetary gear reducer (5), lead screw (6), a stroke detector (7); a lower valve body (8), a valve seat (9), a stop valve clack (10), a stator shielding sleeve (11), a lower fastening bolt (12), a stroke sliding block (13), a lead screw nut (14), a lower rolling bearing (15), an upper fastening bolt (16), a second gland (17), an upper valve body (18), an output gear (19), a duplicate gear (20) anda fixed gear (21). Compared with the prior art, the stop valve has the advantages of being simple in structure, reliable in performance, high in cost performance and the like, media conveyed by the stop valve can be effectively used for cooling internal components, and therefore the service life of the stop valve is effectively prolonged. 本实用新型公开了一种自冷却自润滑型截止阀，属于控制阀技术领域。本实用新型的截止阀包括第一压盖(1)、定子(3)、转子(4)、行星齿轮减速器(5)、丝杠(6)、行程检测器