Design And Cleaning Test Of Dry And Low Damage Sorting Machine For Potato

In view of the existing potato cleaning grading machinery,wet cleaning is commonly used,it is difficult to store after cleaning,and the rate of mechanical damage to the potatoes during the grading process is high.A potato dry low-damage cleaning grading machine is designed and cleaned.the study.The structure design and working principle of the machine are explained,and the main influencing factors affecting the effect of potato cleaning are determined: the feeding speed,the cleaning roller rotation speed and the number of cleaning rollers.Using the cleanliness rate of sorting and the rate of damaged potatoes as the evaluation index,a homogeneous design test of 3 factors and 6 levels was conducted.The partial least-squares regression analysis method was used to obtain the quadratic polynomial regression model for each evaluation index.The optimization analysis was performed based on the regression coefficients of main-effect criteria,model fitting,single factor,interaction,etc.:(1)Each influencing factor pair The role of each evaluation index: the effect of feeding speed on sorting cleanliness rate and potato damage rate was a negative effect,and the effect of cleaning roller rotation speed and number of cleaning rollers on sorting cleanliness rate and broken potato rate was a positive effect;(2)The order of the influence of each influencing factor on each evaluation index: The order of the influence on the cleanliness of sorting is the feeding speed,cleaning roller rotation speed and the number of cleaning rollers,and the order of the impact on the damage rate is To clean the roller speed,feeding speed and the number of cleaning rollers.The optimization results determine the optimum value of each influencing factor: When the cleaning roller rotation speed x1 is 75r/min,the feeding speed x2 is 27t/h,and the number of cleaning roller x3 is 6,the corresponding respective optimum evaluation index is: The selected cleaning rate y1 was 98.793% and the damaged potato rate y2 was 3.631%,which met the operational requirements.