Water-containing blast hole drainage device for strip mine

The utility model discloses a strip mine water-containing blast hole drainage device which comprises a lifting frame and a water collecting pipe arranged below the lifting frame, a floating block is arranged at the bottom of the water collecting pipe, the top of the floating block is fixedly connected with two sliding rods, a fixing ring is arranged in an inner cavity of the water collecting pipe, and the sliding rods are fixedly connected with the sliding rods. Limiting rings are welded to the two sides of an inner cavity of the fixing ring. The lifting frame is erected on the top of the blast hole, the water collecting pipe is placed in an inner cavity of the blast hole, the hanging ring is rotated, the water collecting pipe moves downwards, when the floating block makes contact with accumulated water, the floating block can jack up the butterfly-shaped baffle to collect the accumulated water, and after collection is completed, the hanging ring is reversely rotated to bring the water collecting pipe out of