Automatic ammonia spraying grid

The invention relates to the technical field of ammonia spraying grilles, in particular to an automatic ammonia spraying grille which comprises an outer sleeve, an adjusting assembly and a diffusion assembly, the diffusion assembly comprises a plurality of nozzles, connecting components, diffusion caps and diffusion blades, the nozzles are detachably connected with the outer sleeve and located at first small holes, and the connecting components are connected with the diffusion caps. Each nozzle is connected with a connecting component, each connecting component is connected with a diffusion cap, the outer surface wall of each diffusion cap is fixedly connected with a plurality of diffusion blades, and the plurality of diffusion blades are respectively distributed in a thread shape; after the ammonia spraying flow of the outer sleeve is adjusted through the adjusting assembly, ammonia gas is sprayed out of the nozzle through the first small hole, airflow impacts the diffusion blades and drives the diffusion ca