Automatic resetting selection valve

• Main Authors: WANG HUIBIN, WANG HURU
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2010
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

The utility model discloses an automatic resetting selection valve which comprises a valve body, a bonnet, a piston and a valve rod that are arranged in the valve body, and a fixed gasket body connected with the lower end of the valve rod and play a role of separating an inlet from an outlet, wherein the upper end of the valve rod is provided with the piston connected with the valve rod, and a piston chamber is formed by the piston and the inner wall of the valve body; an auxiliary valve is arranged at the side wall of the lower part of the valve body and connected with one end of an air inlet pipe, and the other end of the air inlet pipe is connected with the auxiliary valve; another air inlet pipe used for being connected with a starting air cylinder is led out from the air inlet pipe; a spring is arranged between the upper part of the piston and the bonnet; the middle part of the spring is provided with a reset lever which is connected with the piston and plays a role of resetting guidance; and an exhaust