Design and Testing of EDEM-based Peanut Combine Harvester Cleaning Device

In order to further reduce the peanut joint harvest cleaning and debris removal process, high loss rate, high rate of debris, this paper focuses on the peanut mixture（peanut pods-stalk-soil debris） basic physical parameters and suspension characteristics, innovative proposed a wind sieve combination peanut cleaning device.The vibrating sieve upper sieve to take the serrated structure, the lower sieve to take the hole type. The structure increases the movement distance of the peanut mixture and improves the cleaning efficiency of the peanut mixture. In order to determine the best working parameters of the vibrating screen, combined with EDEM simulation software, a peanut pod-stalk-soil discrete element model was established.The movement trajectory of the peanut mixture during the reciprocating operation of the vibrating screen was systematically analysed, while the amplitude, frequency and inclination angle of the vibrating screen were used as test factors, and the loss rate and impurity rate were used as test indicators for the test optimisation analysis.Through the Design Expert 10 software Optimization to optimise the test results and obtain the best working parameters for the vibrating screen: 1.57% loss rate and 1.19% impurity rate for the peanut mixture when the amplitude is 5.4 mm, the frequency is 24 Hz and the inclination angle is 8°.