Ball-off type pressure tapping detonating device

The utility model discloses a ball-off type pressure tapping detonating device. An upper joint of the device is provided with an upper joint circulation hole; a firing pin plug circulation hole and an elastic clamp ring are arranged on a firing pin plug; a piston sleeve is limited in a lower joint through the upper joint and the lower joint; before ball-off type detonation, the upper joint circulation hole and the firing pin plug circulation hole are communicated to form a circulation channel; the firing pin plug is connected with the piston sleeve through a shearing pin to realize the limiting effect; the elastic clamp ring is limited in a clamp ring groove on the firing pin plug through the inner wall of the upper joint; and after the ball-off type detonation, an annular space in the upper joint and the upper joint circulation hole are communicated to form a circulation channel, and the elastic clamp ring is clamped at the lower end surface of the upper joint. By adopting the ball-off type pressure tapping