关键词: 食用菌, 翻堆机, 双辊结构, 离散元, 翻堆装置

Abstract:  In order to solve the problems of poor working environment, high labor intensity, low work efficiency and uneven mixing of materials in the manual turning method of edible fungi production base at the present stage, a kind of turning machine with doubleroller turning device was proposed. The turning device used a doublehelix method to design the distribution of the throwing knives according to the principle of layered cutting, the smallradius throwing knives was used to achieve a large turning depth. By building a discrete element simulation model for doubleroller turning piles, the EDEM software was used. The engineering process of the turning device and the particle flow, collision and scattering of particles under different working conditions were analyzed. Through simulation analysis and Central Composite Design test analysis, the optimal combination determined that the doubleroller axis spacing was 525.17 mm and the axis angle was 3525°. Finally, the field test was carried out to verify the feasibility of the discrete element simulation of the turning operation of the turning machine and the test results showed that the mixing coefficient of the pile after operation was 0714, and the operating power consumption was 1.828 kW, which shows that the compost turner has good crushing and mixing effects.

Key words: edible fungi, turning machine, doubleroller structure, discrete element, turning device