When the hot water flows into the nozzle, the internal swirling flow is produced by the internal swirling flow sheet of the nozzle, and the water droplets are sprayed out in the form of water column and mist. The diameter of the water droplets can be refined to 0.5-1.0 mm. Hamon spray nozzle is mainly used in spray cooling tower, and is the main component of water distribution in cooling tower.