Waterpower self-rotating sprinkling device

The utility model provides a waterpower self-rotating sprinkling device, comprising a water inlet trunk pipe, a water diversion bag, water inlet branch pipes, rotary joint seats, rotary joint cores and spraying-sprinkling pipes, wherein the trunk pipe (1) is communicated with the water diversion bag (3); the water inlet branch pipes (4) are communicated with the water diversion bag (3) and the rotary joint seats (5); the rotary joint cores (6) are installed in the rotary joint seats (5) in a sheathing way; the spraying-sprinkling pipes (7) are communicated with the rotary joint cores (6) through core pipes (23); water with certain pressure is sprayed out from spraying-sprinkling holes (37) in the spraying-sprinkling pipes (7); and counterforce generated by sprayed-out water current propels the spraying-sprinkling pipes (7) to drive the rotary joint cores (6) to uniformly rotate for 360 degrees along the same direction of axes in the rotary joint seats (5). When being used on a steel slag tank for treating ste