Abstract:In order to solve the problems of poor mixing uniformity, low mixing efficiency and high hidden danger of special powder in military industry, a set of 2D automatic mixing device for special powder was designed. Through introducing the technical requirements and process flow, and according to the physical characteristics of the special powder, the mechanical structure, air control system and electric control system of the mixing device were designed by taking the cold smoke agent of cold smoke bomb as an example. The practical application results show that the mixing uniformity of the device is good, the automatic production can be realized, and the hidden danger of manual operation can be eliminated.