Device for purifying engineering construction safety door

The utility model relates to the technical field of safety doors, in particular to a device for purifying an engineering construction safety door, which comprises a water tank, a telescopic water stop plate, a limiting plate, a telescopic water stop block, a spray rod and an infrared sensor, one side of the bottom end of the water tank is fixedly connected with a water hose, and one end of the water hose is fixedly connected with the spray rod. A spraying hole is formed in the bottom end of the inner side of the spraying rod, telescopic water intercepting blocks are fixedly connected to the two ends of the inner side of the spraying rod, an infrared sensor is fixedly connected to the outer side of the bottom end of the spraying rod, a motor is arranged on the outer side of one end of the water tank, a rotating disc is fixedly connected to the front end of a main shaft of the motor, and a rotating rod is fixedly connected to the bottom end of the rotating disc; water in the water tank is atomized and sprayed o