Geothermal tail water recharging device

The utility model relates to the technical field of geothermal tail water recharge equipment, in particular to a geothermal tail water recharge device which comprises a pressure pump and a water injection pipe, the water injection pipe extends to the underground, the pressure pump is communicated with the upper portion of the water injection pipe, a dredging plate is arranged on the lower portion of the water injection pipe and slidably connected into the water injection pipe, and the dredging plate is communicated with the water injection pipe. A first limiting block for limiting the dredging plate is arranged at the position, located below the dredging plate, of the water injection pipe, and an annular groove for tail water to flow from the upper side of the dredging plate to the lower side of the dredging plate is formed in the position, located at the limiting block, of the water injection pipe. The device has the effect of reducing the possibility of blockage of the water injection pipe. 本申请涉及地热尾水回灌设备技术领