High-frequency gas-liquid switch valve

The invention discloses a high-frequency gas-liquid switch valve, which comprises a valve spool. The valve spool is arranged in a valve bush which is arranged in an inner cavity of a valve body; one end of the valve bush is arranged in an end cover which is fixed on the valve body; a nozzle is fixed on the valve body; a fourth static seal is arranged in a static seal groove of the valve body; first and second dynamic seals are arranged in a dynamic seal groove of the valve spool; first, second and third static seals are arranged in the static seal groove of the valve bush; when an air controlport is communicated with the atmosphere, liquid with pressure enters the valve body through an inlet, passes through an inlet hole and a valve bush small hole and only acts on the minor-diameter endof the valve spool, the valve spool moves upwards, the air control port discharges air, and the liquid enters the nozzle through a connecting hole of the nozzle and is ejected through an outlet; and when the air control port i