Drain the muffler quickly. The invention is mainly used for effectively silencing the high-temperature and high-pressure steam discharge of safety valves, quick exhaust valve valves, PCV valves and steam exhaust valves in electric power, chemical industry, metallurgy and other industries, so the invention is used in quick exhaust valve. Quick exhaust valve is suitable for pipelines with water as industrial medium, and it is used as the equipment for rapidly exhausting gas in pipelines.