打辊工艺对翠碧一号上部烟叶打叶质量和出片率的影响
Influence of rotational speeds of threshing drum on threshing quality and strips yield of upper leaves of flue-cured tobacco CB-1
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摘要: 为提高翠碧一号上部烟叶打叶质量和出片率,明确打辊工艺对打后片烟结构、叶中含梗率和出片率的影响,采用均匀试验设计不同打辊转速组合,在打叶复烤生产线开展打叶实验,应用回归分析构建一至四级打辊转速与片烟结构、叶中含梗率和出片率的数学模型,利用模型对四级打辊转速参数进行了优化和验证。结果表明:大片率、中片率、大中片率和碎片率与打辊转速线性回归模型均在P<0.01水平显著,叶中含梗率与打辊转速线性回归模型在P<0.05水平显著,出片率与打辊转速线性模型相关系数为0.83,但在P<0.05水平不显著;在其他工艺条件恒定时,大片率、中片率、大中片率受一级打辊转速和二级打辊转速影响较大,碎片率受一级打辊转速和三级打辊转速影响较大,叶中含梗率受一级打辊转速影响较大,出片率受一级打辊转速、二级打辊转速和四级打辊转速影响较大;优化后一至四级打辊转速分别为585 r/min、590 r/min、680 r/min和690 r/min,较现行工艺大片率降低了9.59%、中片率提高了17.41%、出片率提高了1.33%,有效提升了翠碧一号上部烟叶的打叶质量。Abstract: In order to improve the threshing quality and strips yield of the upper leaf of flue-cured tobacco CB-1, the influence of rotational speeds of threshing drum on leaf structure, stem content and yield was determined. Uniform experiment was used to design different rotational speed combinations, and the experiment was carried out on the threshing and redrying line. The linear regression model of the first to fourth rotational speed and the leaf structure, stem content and yield was established by regression analysis, and the model was used to optimize and verify the rotational speed parameters of the fourth-stage threshing drum. The results indicated that tyhe linear regression models of large strip rate, medium strip rate, large-to-medium strip rate and fragment rate with rotational speed were significant at the P<0.01 level, and the linear regression model of stem content in the leaf with rotational speed was significant at the P<0.05 level. The correlation coefficient of the linear regression model of stripsyield and rotational speed was 0.83, but it was not significant at the P<0.05 level. The large strip rate, medium strip rate, and large-to-medium strip were were influenced by the interaction between the first and second rotational speed. The fragment rate was closely related to the primary and tertiary rotational speed. The stem content in the leaf was main influenced by the primary beater speed. The strips yield was main influenced by the interaction between the primary, secondary, and quaternary rotational speed. The ideal rotational speeds for the first to fourth levels were determined to be 585 r/min, 590 r/min, 680 r/min, and 690 r/min, respectively. Compared to the present rolling speed combination, these adjustments resulted in a 9.59% reduction in large strip proportion, an 17.41% increase in medium strip proportion, and an 1.33% increase in strips yield. This optimization significantly improved the threshing quality of upper leaves of tobacco CB-1.
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Key words:
- CB-1 /
- rotational speed of threshing drum /
- threshing quality /
- strips yield /
- uniform experimental
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