In response to the problem of feeding blockage caused by the clustering of membrane debris mixture, this paper designs a membrane debris shredding device with feeding regulation function that meets the palatability requirements of white star flower beetle larvae. By conducting force analysis on the feeding and shredding process of the membrane mixture, the structural and working parameters of the main components were determined. In order to verify the reliability and operational performance of the machinery, a single factor experiment was conducted to determine the reasonable range of values for the feeding roller speed, dynamic and fixed blade clearance, and chopper roller speed. The feeding roller speed, dynamic and fixed blade clearance, and chopper roller speed were used as experimental factors, and the cotton stem shredding length qualification rate, residual film shredding length qualification rate, and power consumption were used as evaluation indicators for a three factor three-level response surface test. A regression model was established to analyze the influence of each factor and its interaction on the operational performance of the machinery, and optimize each factor. The optimization results showed that the optimal operating effect was achieved when the feeding roller speed was 24.8 r/min, the dynamic and fixed blade clearance was 0.4 mm, and the shredding blade roller speed was 256.4 r/min. The optimized results were verified through experiments, and the average qualified rate of cotton stem shredding length was 89.99%, the average qualified rate of residual film shredding length was 90.53%, and the average power consumption was 0.97 kW. The research results can provide reference for the development of film mixed shredding technology.
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