Authors

Abstract

In order to solve the problem of poor mixing effect of inclined spiral conveyor, this paper designed an inclined spiral and ribbon blade combination conveying device. The mechanics and kinematics analysis of the movement process of the material unit in each mechanism was carried out, on which key devices and components were designed based. Effects of the speed of main shaft (X1), the full coefficient (X2) and the angle of inclination (X3) on the mixing uniformity (Y1) and the residual rate of material (Y2) were explored. Three-dimensional quadratic regression orthogonal rotation central combination experiment method combined with response surface method was used to conduct experiments and explore the interaction effects of influence factors on indicators. A regression model of influence factors and evaluation indicators was established through the analysis of variance. The significant factors affecting Y1 were ordered of X3, X2, X1, and the significant factors affecting Y2 were ordered of X2, X1, and X3. In the interaction of factors, X1X2 had a significant impact on Y1 and Y2; X1X3 had an extremely significant impact on Y1; X2X3 had an extremely significant effect on Y1 and a significant impact on Y2. The optimal structure and working parameters combination were determined to be 50 rpm for the speed of main shaft, 60% for the full coefficient, and 19° for the angle of inclination, while the verification experiments demonstrated that the mixing uniformity and residual rate of material corresponding to the verification test were 90.37% and 5.31%, respectively. The inclined device with combined spiral and ribbon blade developed in this study meets the design requirements for the misprocess of the fertilizer utilization of agricultural organic wastes.

Abstract in English

为解决倾斜螺旋叶片输送机输送秸秆与畜禽粪便混合效果不佳的问题，设计了一种适用于作物秸秆与畜禽粪便混合用于肥料生产的螺旋叶片与螺带叶片组成的斜式混合输送装置，并对其进行设计和性能试验。结合物料单元体在关键机构中的动力学与运动学分析，确定机构主要结构及工作参数。采用三元二次回归正交旋转中心组合试验方法，以主轴转速、充满系数和倾斜角度为试验因素，以混合均匀度和物料残留率为评价指标，实施试验并对其结果进行分析，建立影响因素与评价指标回归模型。结果表明：影响混合均匀度的主次因素是倾斜角度、充满系数、主轴转速，影响物料残留率的主次因素是充满系数、主轴转速、倾斜角度；确定最优参数组合为：主轴转速50 r/min、充满系数60%、倾斜角度19°，在此条件下混合均匀度和物料残留率分别达到90.37%、5.31%，试验验证结果表明，所设计机构满足技术要求。