Stove front self-closing valve

The utility model discloses a self-closing valve in front of a stove. The self-closing valve comprises an outer valve body, a sliding switch, an overflow self-closing assembly, an overpressure self-closing assembly, an underpressure self-closing assembly and a reset switch, an input port and an output port are formed in the two ends of the outer valve body respectively, an air inlet hole and an air outlet hole are formed in the outer surface of the outer valve body, and a mounting hole is formed in the outer valve body; the sliding switch is arranged on the outer surface of the outer valve body in a back-and-forth moving mode so that the air inlet and the air outlet can be communicated or disconnected. The superflow self-closing assembly, the overpressure self-closing assembly and the underpressure self-closing assembly are all arranged in the outer valve body and are sequentially arranged in the gas conveying direction. By arranging the superflow self-closing assembly, the overpressure self-closing assembly