Expansion ring type quick-opening blind plate with high sealing performance

• Main Author: JIANG YUANSHAN
• Format: Patent
• Language: Chinese; English
• Published: 16.06.2020
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model relates to the technical field of leakproofness, and discloses a high-leakproofness expansion ring type quick-opening blind plate which comprises an expansion ring type blind plate upper cover, a pressure gauge is fixedly installed at the top of the expansion ring type blind plate upper cover, a vent valve is fixedly connected to the top of the expansion ring type blind plate upper cover, and a lock hook is fixedly installed on the side face of the expansion ring type blind plate upper cover. The expansion ring type quick-opening blind plate with high sealing performance comprises a blind plate body, the piston plate drives the rubber plate to slide downwards by pressurizing the position opening of the air inlet valve; an inner hole of the expansion ring type blind platebase is completely covered; then the pressure gauge is observed manually; the pressure intensity of sealing of the rubber plate is controlled by manually controlling the injected air pressure, the ventilation valve is opened,