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标题：Determinig the parameters of the acoustic system for the primary treatment of wool
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作者：Lyudmyla Mykhailova ; Oleksandr Kozak ; Natalia Kosulina 等
期刊名称：Eastern-European Journal of Enterprise Technologies
印刷版ISSN：1729-3774
电子版ISSN：1729-4061
出版年度：2018
卷号：3
期号：5
页码：61-68
DOI：10.15587/1729-4061.2018.133710
语种：English
出版社：PC Technology Center
摘要：We have studied the process of primary treatment of wool in order to remove soil and manure contaminants, vegetable impurities, fat, and sweat. The primary treatment of wool performs a key role in retaining the natural properties of wool fiber and makes it possible to obtain high-quality raw materials for textile industry. It was found in the course of research that the intensification of the processes of primary treatment of wool requires the application of acoustic oscillations. Acoustic oscillations act on the system wool‒washing solution. The system wool‒washing solution is in between grating conveyors. Conveyors form a grating of metal rods. To determine parameters of the acoustic system for the primary treatment of wool, we performed an analysis of three problems. The problems related to: the scattering of acoustic oscillations on a metal grating, on a layer of wool-washing solution, and combining the solutions to two problems into one using a scattering matrix method. Our study allowed us to define parameters for the system of primary treatment of wool with acoustic oscillations, which makes it possible to achieve greater effectiveness in cleaning wool compared to existing analogues. It was established in the course of theoretical and experimental studies that the washing of wool should be carried out at the following parameters of acoustic oscillations in a washing solution: frequency of the sound field is 1.1±0.1 kHz; the sound intensity is 1.1±0.01 W/cm2. In this case, the thickness of a layer of wool at the conveyor is 0.06±0.01 m; the motion speed of conveyor is 0.1 m/s; the number of converters per bath is 8±1 pieces.The application of optimal parameters in process of continuous washing of wool fibers in an aqueous solution makes it possible to obtain the residual fat on wool within 1.5 % of the amount of fat in the unwashed wool while GOST of Ukraine permits up to 2 %.
关键词：primary treatment of wool;parameters of acoustic oscillations;coefficient of reflection of acoustic wave