Electric furnace anti-explosion valve capable of resetting automatically

The utility model provides an automatic reset electric furnace explosion-proof valve which comprises a valve body, the surface of the valve body is connected with an installation ring, the top of the installation ring is connected with an installation cylinder, the interior of the installation cylinder is connected with a limiting plate in a sliding mode, and the top of the limiting plate is connected with a connecting rod. The top end of the connecting rod movably penetrates through the mounting cylinder and the valve body in sequence and extends out of the valve body; according to the explosion-proof valve, the mounting barrel, the limiting plate, the connecting rod, the lower pressing plate, the reset spring, the limiting groove and the like are matched, the reset spring rebounds after impact generated by detonation is finished, the limiting plate is pushed downwards, and therefore automatic reset of the explosion-proof piece is achieved, manual reset of the explosion-proof valve is not needed, the working