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The existing research on the key parameters of the continuous mixer is mostly based on the dry and rigid concrete material. Facing the safety of firefighting operators in high-risk environments, this paper investigates a robot for mixing engineering composites, which can automatically monitor the homogeneity of the mixing and, together with an automatic material feeding system, can realize automated production. The mixing time is short, and the concrete maturity is poor when preparing the ready-mixed concrete. Based on the discrete element method, this study determined the simulation conditions of ready-mixed concrete, analyzed the key parameters of the continuous mixer, carried out the orthogonal simulation experiment of the multi-factor structural parameters of the continuous mixer, studied the influence of different structural parameters on the mixing time, mixing uniformity and productivity, and determined the best parameters: The blade installation Angle is 25°, the stirring linear speed is 2.0m/s, the central intersection area accounts for 15%, and the axial clearance of adjacent blades is 1.5D. It is beneficial for improving the performance of continuous mixers and the quality of concrete.
Zhang et al. (2024) studied this question.