Abstract
The aim of this work is studying the influence of some parameters of blowroom opening and cleaning machines on cleaning efficiency. Erect of grid gap width on waste and good fibre elimination as well as cleaning efficiency is studied for opening and cleaning machines and for blowroom line. Factorial analysis were carried out to determine if the variation in cleaning efficiency is significant or by accident. For bale opener the variables were cotton type (trash content), grid gap width and spiked lattice and evener roller selling with interaction 2 x 3 x 5. Also for cleaner RN factorial analysis were carried out for grid gap width and seed roller speed with interaction 4 x 3. Results showed that trash content and grid gap width as well as the other variables have a significant effect on cleaning efficiency. Every elimination of foreign matter is accompanied by a simultaneous elimination of good fibres. For opening and cleaning machines, as grid gap width increased trash and good fibres eliminated increased, but the rate of good fibres climination is uglier than the rate of trash climination. For blowroom line increasing grid gap width of opening and cleaning machines from narrow to open Ievel raised the cleaning efficiency from 43% to 56% and good fibres climinated increased by 30%.
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