Study of Effect of Speed and Temperature of the Drying Agent in the Feeder-Loosened of New Design on the Quality of Fiber

It has been scientifically proved that over dried cotton fiber loses valuable natural properties: it becomes fragile, brittle, physical-mechanical, spinning and performance properties of products made from this fiber are deteriorated, and the content of defects and foul of the fiber are increased. Preparation of the material mixture and the control of the temperature and feed rate of the drying agent at the inlet of the drying device is important to obtain a quality product. Results of scientific research work on analysis of the drying process of raw cotton are presented, and method for the analytical calculation of thermal-physical indicators and the efficiency of its thermal conductivity is developed. Dependence of the drying parameters on the air rate is studied. Influence of these technological parameters on the intensity of moisture removal in raw materials and, as a consequence, shortening in duration of drying process was established. For example, the drying intensity in the initial period is 1.16 times higher than that in existing dryer (reference sample). Research aimed at improving the process of conductive drying of raw cotton was carried out in purpose to reduce the temperature effect on the natural quality indicators of cotton. According to the results of the research, laws of changes in the quality indicators of cotton and its components, as well as the process of mixing of the drying agent are revealed, the dependence of the rate regimes of the new device that positively affect the technological processes of treatment and quality indicators of raw cotton is received. The main purpose of this scientific work was to improve the design of the feeder of the drying unit for loosening cotton fiber, improving its quality and saving specific fuel consumption. In this purpose, it is necessary to conduct a study of the process of grinding lumps of raw cotton, the dynamics of their fusion with a drying agent and the prerequisites for creating a mixture. The results of the study (improving the spinning-technological properties of the fiber, reducing the foul of the webs from 161 to 157 pieces per 1 g, increasing the elongation from 5.6 to 6.4% ...) will be useful to employees of cotton-cleaning enterprises, scientists and researchers.

Перевод пока недоступен