High-pressure large-flow charging and discharging valve

The invention discloses a high-pressure large-flow charging and discharging valve. The high-pressure large-flow charging and discharging valve comprises a gas valve and a butt joint mechanism, whereinthe left end of the gas valve is a bottle receiving end used for being connected with a gas bottle, and the right end of the gas valve is a valve opening end used for being connected with the butt joint mechanism. The high-pressure large-flow charging and discharging valve is ingenious in structural design, is sealed under high pressure, is mechanically opened, can be repeatedly used, and has theadvantages of being high in safety, good in sealing performance, small in size, light in weight, compact in structure and the like. A valve nozzle serves as a core part of the gas valve, multiple sealing functions are integrated, the number of parts is effectively reduced, the structure of the valve is simplified, and the valve is convenient to machine and manufacture, suitable for mass production and particularly suitabl