Nozzle of precooling surface evaporating air cooler

The utility model discloses a nozzle of a precooling surface evaporating air cooler and the nozzle can be conveniently detached and maintained and a spraying blind zone is prevented from forming. A central blind hole is arranged in a nozzle body; the periphery of the nozzle body is provided with spraying through holes; the spraying through holes have the same included angle as the central line of the nozzle body; the spraying through holes are radially symmetric to each other and staggered in an axial way; and the circumferential surface of the nozzle body is provided with installation technology circular grooves and external threads connected with a water supplying line. When the nozzle is installed, the only work needed is to exactly aim the nozzle to an installation hole of the water supplying line and then the nozzle is screwed; a qualified screw hole preset on the water supplying line ensures vertical installation of the nozzle, so even spraying can be achieved and spraying blind zone is avoided; a well-