Aiming at the problem of high crushing rate and uncleaned rate in the process of corn threshing in Heilongjiang region,the plate-tooth axial flow corn threshing and separating device was designed,and the parameters of its key components was designed and calculated,and the three-dimensional model of the overall test bench was established by using the mapping software.The dimensions of the concave plate grid,drum speed and feeding volume were taken as the influencing factors,and the crushing rate and uncleaned rate were taken as the performance indexes,the single-factor and multi-factor experiments were carried out on the homemade corn threshing and separating device test bench,and Design-Expert 12.0 data analysis software was used to analyze the experimental results and optimize the solution.The results showed that the influence of the test factors on the kernel breakage rate was from the largest to the smallest in the order of concave plate grid size,feeding volume and drum speed,and the influence on the unthreshing rate was from the largest to the smallest in the order of feeding volume,concave plate grid size and drum speed,the optimal combination of parameters was as follows:Concave plate grid size 18 mm,drum speed 199 r/min,feeding volume 2.1 kg/s.The minimum value of the seed crushing rate was 2.39% and the minimum value of the uncleaned rate was 0.21% .Finally,the optimal parameter combinations are verified experimentally,and the relative error between the verification results and the optimization results meets the requirements.
关键词
玉米/板齿/脱粒分离装置/喂入量/响应曲面试验
Key words
corn/slatted teeth/threshing and separating device/feeding volume/response surface test
维普
万方数据