고추수확기용 이물질 선별부의 성능 개선에 관한 연구

This study was conducted to improve the performance of a foreign materials separating system. The floating velocity of pepper fruits and the foreign material in the raw and dried samples were measured for three pepper varieties. The results showed that the floating velocity of the raw pepper fruit was 11.5-14.3 m/s, the raw pepper stems was 10.9-12.5 m/s, the raw pepper leaves was 3.45-5.42 m/s, the dry pepper fruit was 10.89-12.1 m/s, the dry pepper stems was 8.35-9.54 m/s, and the dry pepper leaves was 2.74-5.14 m/s. Wind speed at each position of the winnowing machine was measured with the addition of wind guides. After the wind guides were added, the deviation of the left and right wind speeds was reduced. The efficiency of foreign materials separation and the ratio of stagnant foreign materials were analyzed by the addition of wind guides and the position of a collection guide. The results of the factor experiments were analyzed by two-way analysis of variance (ANOVA). The results of factor experiments showed that. As for the addition of wind guides, the separation efficiency of foreign materials was an average of 25.40–47.00% of the existing winnowing machine, which was higher than the wind winnowing machine with added wind guides. As for the collection guide position in the front-middle condition, the separation efficiency of the foreign materials and the ratio of stagnant foreign materials for existing winnowing machine were 47.0% and 7.2%, respectively. As for same condition, the separation efficiency of the foreign materials and the ratio of stagnant foreign materials were 34.2% and 2.6%, respectively for winnowing machine with three wind guides. For winnowing machine with five wind guides, the separation efficiency of the foreign materials and the ratio of stagnant foreign materials were 34.2% and 2.6%, respectively. Considering the separation efficiency of the foreign materials and the ratio of stagnant foreign materials, the best condition of the winnowing machine is with three wind guides for the collection guide position in the front-middle condition.