Mine wastewater drainage device based on coal mining

The utility model belongs to the technical field of coal mines, and particularly relates to a mine wastewater drainage device based on coal mining, which comprises a box body, supporting legs are fixedly mounted at the bottom of the box body, a water inlet pipe is fixedly mounted on the upper surface of the box body, and a first water pump is fixedly mounted on one side of the water inlet pipe. A sliding groove is fixedly formed in one side of the interior of the box body, and sliding wheels are slidably installed in the sliding groove. According to the mine wastewater drainage device for coal mining, iron blocks in wastewater are adsorbed through the two electromagnetic plates in the box body, the electromagnetic plates move along the sliding grooves through the sliding wheels, the adsorbed iron blocks are placed in the iron block storage box, the iron block storage box is provided with a box door, the iron blocks are taken out by opening the box door after the iron blocks are full, and resource waste is avo