Pilot cavity pressure and flow adjusting device

The utility model discloses a pilot cavity pressure and flow adjusting device which comprises a pilot part, an electromagnetic part and a main stage part, an adjusting cavity is formed between the main stage part and the electromagnetic part, a pressure relief channel is arranged between the adjusting cavity and an external low-pressure cavity, the pilot part comprises a pilot valve seat, a failure gasket and a leaf spring, and the failure gasket is arranged on the pilot valve seat. The pilot valve seat is provided with a pilot cavity, the opening end of the pilot cavity faces the adjusting cavity, the failure gasket and the leaf spring are arranged at the two ends of the interior of the adjusting cavity respectively, a center through hole and an eccentric through hole are formed in the leaf spring, and a shaft rod is arranged in the adjusting cavity. And the end part of the shaft rod reciprocates at a first stroke point and a second stroke point in the adjusting cavity. According to the pressure and flow adj