Drainage device for coal mine area

The utility model discloses a drainage device for a coal mine area. The device comprises a drainage floor drain, a drainage motor, a first water pump, a transfer water tank, a conveying motor, a second water pump, a conveying water pipe and a precipitation water tank, the lower side of the drainage floor drain is connected with a first water pump; a drainage motor is arranged on the side surface of the first water pump; the right side of the first water pump is connected with a transfer water tank; the bottom of the transfer water tank is connected with a second pump; a conveying motor is mounted on the side of the second water pump; the second water pump is connected with a precipitation water tank through a conveying pipe; water in the floor drain shell is conveyed into the transfer water tank by the first water suction pump; a medicine for accelerating solid precipitation is put into the purified water cartridge in the transfer water tank; the second water suction pump is used for conveying water in the tr