Self-resetting explosion venting device

The utility model relates to a self-resetting explosion venting device which is characterized by comprising a base, a rubber sealing ring, a cover, guide screws, a positioning pressure plate, sleeve nuts and a spring. The base is fixed to equipment or a gas pipeline, a concentric circular groove is formed in the base, the rubber sealing ring is inlaid in the concentric circular groove, and the guide screws are fixed onto the base; the cover is sleeved on the guide screws via guide limiting holes which are formed in the cover by means of welding, and an edge opening of the cover is seated on the rubber sealing ring; the positioning pressure plate is sleeved on the upper portions of the guide screws, and the spring is arranged between the positioning pressure plate and the cover; the sleeve nuts are arranged at the uppermost ends of the guide screws. The self-resetting explosion venting device has the advantages that the pressure can be quickly relieved when the local combustion pressure of gas in the equipment