Automatic spraying and cooling fire-fighting lance

The utility model belongs to the technical field of fire-fighting equipment, and particularly relates to an automatic spraying and cooling fire-fighting lance which comprises a lance body, a bearing sleeve fixedly connected below the lance body, a spraying head fixedly connected below the bearing sleeve, a fixing shell fixedly installed on the surface of one side of the lance body, and a sliding rail fixedly installed on one side of the interior of the fixing shell. A first sliding plate is slidably connected to the surface of the sliding rail, a zinc rod is fixedly installed in the fixing shell, a first spring is fixedly installed on the upper surface of the first sliding plate, a second sliding plate is fixedly connected to the upper portion of the first spring, a fixing rod is fixedly installed on the upper surface of the second sliding plate, and a connector is movably connected to the upper portion of the front face of the fixing rod. Through the shaft rod installed in the gun body and the turbine blades