| Design and test of horizontal axis flow flexible threshing and separating device for oats |
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| DOI：10.7606/j.issn.1000-7601.2022.03.29 |
| Key Words: threshing and separating device flexible threshing tooth oats test optimization |
| Author Name | Affiliation | | GENG Lingxin | College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, China | | LU Fuyun | College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, China | | SUN Chenglong | College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, China | | ZUO Jiewen | College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, China | | LI Yang | College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, China | | WANG Hengyi | College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, China |
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| Abstract: |
| To solve the problems of high impurity content and large entrainment loss rate of oat mechanized threshing in China, we designed a horizontal axial flow flexible threshing separation device to reduce the impurity content by reducing the stalk crushing and reduce the entrainment loss by the vibration of the flexible threshing rod teeth. Flexible rod tooth length A, flexible rod tooth diameter B, flexible rod tooth spacing C and drum speed D were selected as test control factors. The impurity rate and loss rate were used as test indexes to conduct orthogonal tests. The factors affecting the device's threshing performance indexes were mainly D,B,A,C. Based on orthogonal test, two factors with strong influence on the threshing performance index of the device were selected for regression analysis. The test results showed that the device had the best threshing performance when the drum rotational speed was 1 048 r·min-1 and the diameter of the flexible rod teeth was 7.5mm, and the impurity content rate was 29.41%, and the loss rate was 1.31%. The above-mentioned optimized combination was tested and verified. The average value of impurity rate was 29.50%, and the average value of loss rate was 1.12%. Under the same parameters, the impurity rate and loss rate were reduced by 2.71% and 0.52%, respectively, and the threshing performance was significantly improved when compared with the cross-axial flow drum in which the threshing element was all rigid rod teeth. This study provides a reference for the innovative design of oat threshing and separating devices. |
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