关键词: 排肥, 肥量调节装置, 叠片, 推拉环

Abstract: In view of the problems of low adjustment precision and uneven fertilizer quantity adjustment, this paper proposes a design for a laminated fertilizer discharge regulating device that can improve performance without crushing fertilizer particles. The adjustment device is laminated with a trapezoidal shape, and the connecting plate at the bottom and at the two ends is equipped with articulated holes. The lamination folds inward along the central axis, and the two sides of the lamination bend inward and outward, respectively. Five horizontal orthogonal rotation combination tests helped determine that the deflection angle of the bending line is 4.63° relative to the central axis, the inward bending angle is 144° and 10.57°, and the distance between the starting point and the central axis is 4.27 mm. The theoretical variation coefficient of displacement consistency is 0.72%, the variation coefficient of stability of fertilizer stability is 0.39%, and the variation coefficient of fertilizer uniformity is 1.77%. The results of the field verification test showed that the variation coefficient of displacement consistency was 0.81%, the variation coefficient of stability of fertilizer stability was 0.42%, and the variation coefficient of fertilizer uniformity was 1.85%.

Key words: fertilizer discharge, fertilizer quantity regulating device, lamination, push and pull ring