Explosion-proof pressure switch capable of limiting spark energy

The utility model discloses an explosion-proof pressure switch capable of limiting spark energy. The explosion-proof pressure switch comprises an explosion-proof box body, the box body is provided with an explosion-proof box cover, the explosion-proof box body is provided with cable introducing devices, a pressure regulating device used for adjusting petroleum pipeline pressure, a fixed plate and a microswitch are disposed in the explosion-proof box body, and the microswitch and the fixed plate are horizontally disposed in the explosion-proof box body. Oil pressure in a liquid oil way in a system is monitored in real time by using the pressure regulating device formed by a pressure spring, a torsion spring, a screw shaft and a corrugated spring tube, when the liquid oil pressure value is greater than a set value, a driving rod of the microswitch is triggered by displacement movement of the threaded rod, so that a power circuit is turned off timely, large-energy current spark is prevented, spark energy limitat