Quick and safe automatic control valve

The utility model discloses a rapid and safe automatic control valve. Valve comprising a valve body, a valve element is arranged in the valve body, an adjusting piston cylinder is further arranged onthe valve body, a limiting plug pin and an adjusting hole are arranged on the adjusting piston cylinder, a limiting inserting hole is formed in the valve element, the limiting plug pin penetrates through the adjusting hole to be inserted into the valve body and matched with the limiting inserting hole, and the adjusting piston cylinder is communicated with the inlet end of the valve body through adrainage pipe. When the pipeline leaks or the load pressure is sharply reduced, the valve element is clamped through the limiting plug pin, and therefore it is guaranteed that the valve element can stably cut off a valve passage, flow cut-off is achieved, and the safety of pipeline operation is improved. 本实用新型公开了一种快速安全自控阀，包括阀体，所述阀体内设置有阀芯，阀体上还设置有调节活塞缸，所述调节活塞缸上设置有限位插销和调节孔，阀芯上设置有限位插孔，所述限位插销穿过调节孔插入到阀体内，并与限位插孔相适配，所述调节活塞缸通过引流管与