The utility model discloses a multi-time piezoelectric
plug valve which is characterized by comprising an igniter mounting seat, a piezoelectric igniter, a pit plate, a clamp spring, a driving hammer, a driving hammer spring, an electronic plate, a rotating shaft, an
electromagnetic valve, a valve core, a pulling sheet, a valve body, an ejector rod and a
nozzle, the igniter mounting seat and the ejector rod are respectively connected with the valve body, the valve core is arranged on the valve body, the rotating shaft is connected with and drives the valve core, and the
nozzle is connected with the piezoelectric igniter. The valve element is connected with the shifting piece, the
electromagnetic valve is arranged on the valve body, and the
electromagnetic valve is electrically connected with the
electronic board. The igniter installation seat is provided with a groove position for containing the piezoelectric igniter, the driving hammer, the clamping spring and the driving hammer spring, the pit plate is fixed to an opening of the groove position, the poking piece is provided with a plurality of ratchets which are movably clamped and matched with the driving hammer, and the driving hammer can be driven to move along the groove position by rotating the poking piece to
impact the piezoelectric igniter. The device is simple in structure, good in stability and low in cost.