Pneumatic starting valve

• Main Authors: ZHU DENGHU, CHEN DAWEI, WANG JIANGLING, YU YINGFEI
• Format: Patent
• Language: English
• Published: 17.02.2016
• 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 invention discloses a pneumatic starting valve. The pneumatic starting valve comprises a valve body, a valve rod which can move in the valve body, and a limiting mechanism. The valve rod is connected into the valve body in a sealed mode. A gas inlet and a gas outlet which allow driving gas to pass through are formed in the valve body. A locking piece is arranged on the valve rod, and the locking piece is matched with the limiting mechanism, so that the valve rod has a locking position and a working position. When the valve rod is located in the locking position, a channel through which the gas inlet and the gas outlet are communicated is closed through the valve rod; when locking of the valve rod by the locking piece is relieved, the channel through which the gas inlet and the gas outlet are communicated is formed in the side wall of the valve rod under the condition that the driving gas passes through the gas inlet to push the valve rod to move to the working station. According to the pneumatic starting valve, a traditional sealing way based on a metal sealing film is changed, continuous and repeated utilization can be achieved without component replacement, and the use cost is reduced; high-pressure gas is used as the driving gas to open the starting valve, the starting force is large, and a driving device which can be opened with large strength can be opened reliably; in addition, a feedback circuit is arranged, and thus a feedback signal can be output in time when the starting valve is opened.