Work

Design and experiment of household clamping sunflower shelling mechanism

Year: 2026

Type: article

Abstract: Aiming at the problems of poor integrity, low hulling efficiency and high kernel crushing rate of the existing household sunflower hulling machine, a household clamping sunflower hulling mechanism was designed in this paper, taking the first-stage ripe sunflower (length L≥ 20mm, width W≥ 8mm) as the research object. The mechanism uses SolidWorks to construct three-dimensional model, adopts the technical scheme of roller extrusion shelling, and realizes the cooperative operation of clamping in the thickness direction and shelling in the width direction through the structure of 90° staggered arrangement of clamping wheels and shelling rollers. In order to optimize the hulling performance, Box-Behnken response surface methodology was used to analyze the factors and their interaction. The rotational speed ratio (A, 0.8-1.2), clamping gap (B, 3-4mm) and hulling gap (C, 7-8mm) were taken as experimental factors, and hulling rate and kernel breakage rate were taken as evaluation indexes. The results showed that the order of influence of each factor on hulling rate and kernel crushing rate was C (hulling gap)>B (clamping gap)>A (rotation speed ratio), and in interaction, B and C had significant influence on hulling rate, A and B, B and C had significant influence on kernel crushing rate. Under the boundary conditions, the optimum parameters were obtained as follows: rotational speed ratio 1, clamping gap 3mm, shelling gap 8 mm. At this time, the shelling rate was 86.32%, and the kernel crushing rate was 6.88%.

Source: Journal of Agriculture and Food Research

DOI: 10.1016/j.jafr.2026.102892