Passive mechanical quick switching-off valve for gas mixing

• Main Authors: LI GUANGXIN, ZHANG ZHEDIAN, LI ZHEN, ZHAO LIFENG, XIAO YUNHAN
• Format: Patent
• Language: Chinese; English
• Published: 21.12.2016
• 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 passive mechanical quick switching-off valve used in a coal mine gas mixing process. The aims of safety, rapidness and linked switching off of high concentration extracted gas in the gas mixing process in a thermal storage oxidation device and a waste heat recycling system of the thermal storage oxidation device are achieved. The passive mechanical quick switching-off valve is opened by rotating a gear disc through a rocker, pushes a nonmetal elastic membrane through positive pressure guided air to drive a locking rod to lock the gear disc, and enables a valve plate to be in the opening state; and when air at an outlet of an air blower losses pressure, the membrane drives a multi-connecting-rod mechanism under the effect of a reset spring to unlock the gear disc, and the valve is closed through the valve plate under the torque effect of a torsional spring. The core function of the valve is safe and synchronous switching off, the passive manner and the pure mechanical motion are achie