The utility model relates to compound
fertilizer processing technical field, and disclose a kind of compound
fertilizer production
spray drying device, including spray granulator, and the side of granulating box is equipped with
exhaust pipe, and one end of
exhaust pipe is equipped with cleaning structure, and cleaning structure includes air induction
pipe component and the support of installation at air induction
pipe component bottom end, and the side top end of support is equipped with cleaning box, and the position of clear water will be lower than the top end position of outer air induction
pipe, and outer air induction pipe carries out
shunting to hot air and powdery compound
fertilizer, and hot air and powdery compound fertilizer are introduced into clear water in box inside using
inverted U shape inner tube, when the bubble generated in clear water floats, the thorn needle set will be broken to bubble, and clear water can capture powdery compound fertilizer by
wetting and adhering effect, to reduce the
diffusion of powdery compound fertilizer, avoid
pollution external environment.