Abstract
In order to solve the problems of small spray amount, short spray distance and spray dispersion caused by the poor cooperation between the spray centrifugal fan and the fireworks flow pipe, the centrifugal fan spray pipe simulation model of the original scheme is established, the feasibility of the model is verified by experiments, and the fluid simulation software is used to calculate the flow characteristics of the simulation model, According to the calculation results, the improved scheme of the pipeline is given. Finally, the improved scheme is verified by experiments. The results show that the improved scheme of the pipeline of the sprayer solves the problems of small flower, short distance between flower dispersion and spraying, which proves the feasibility of the improved scheme; Finally, the conclusion that increasing the fan speed can increase the outlet uniformity is also given, which provides a reference for the design of similar sprayers in the future.