Safe emergency falling-off device for fluid loading and unloading

The utility model provides a fluid loading and unloading safety emergency dropping device, which belongs to the technical field of fluid conveying devices and comprises two symmetrically arranged valve bodies, valve seats are arranged at close ends of the two valve bodies, supports are arranged at far ends of the two valve bodies, valve rods are arranged on the supports in a sliding manner, and valve clacks are arranged on the valve rods. A spring is arranged on the portion, between the valve clack and the support, of the valve rod, the tail ends of the valve rods of the two valve bodies extend out of the valve clack to abut against each other, a snap bolt is arranged between the outer circle faces of the two valve bodies, the valve clack comprises an annular sealing face and an arc-shaped sealing face which are sequentially arranged towards the valve seat, and the valve seat comprises a first sealing face, a second sealing face and an annular sealing groove. The first sealing face protrudes towards the valve