Cooling device for circulated water in gas drainage pump station

A cooling device for circulated water in a gas drainage pump station is disclosed, wherein the cooling device is composed of a water inlet tube, a water outlet tube and a continuously-connected cooling tube disposed between the water inlet tube and the water outlet tube; and the cooling tube is sleeved on the periphery of the water outlet tube of a gas drainage pump separator. After utilizing the cooling device, the temperature of a water medium used by gas is reduced to 35 DEG C, so that a gas drainage pump body is prevented from scaling therein to influence the safe operation thereof due to a long-term operation after the water temperature is too high, the continuously normal operation of gas is ensured, the overhaul times as well as detachment and maintenance expenses of the gas drainage pump are reduced, the normal gas drainage work on a coal face is guaranteed, and the production stop loss of the coal face caused by the stopping of the gas drainage pump is reduced.