Denisova N. The development of the methods of air pollution reduction of working zone of operators moulding of capron thread

The object of study - the process of emergence and spread of contaminants in the air section of molding capron yarns. The purpose of the work - reducing air pollution working area for a set of regulation of process parameters in the range maintain product quality and reduce the harmful effects of pollutants on the health of apparatchiks molded capron yarns. The thesis is devoted to the development of the methods on normali-zation of air environment of working zone, reduction of pollution agents discharge and minimization of their influence on staff of capron thread moulding section. On the basis of implemented analysis of the mecha-nism of pollution agents discharge from the surface of capron threads which are being formed and the developed experimental point method of estimation which is based on usage of electrostatic forces and adsorb-ent features of copper surfaces with polar groups dust there has been developed the mathematical model (exponential kind) of dependence of discharge quantity from technological parameters of forming: the tem-perature of moulding block and the pressure of blow-off air in the pres-sure chamber. It has been found experimentally that the change of tech-nological parameters leads to the changing of zones of maximum dis-charge of contaminants in the pressure chamber which gives the oppor-tunity for taking contaminants out of the breathing zone into the lower part of the chamber. The research of discharge powder have shown that the most amount of contaminants dust (around 96%) in the air of work-ing zone of moulding operators have dangerous size of 0,5-70 microme-ters and get bigger in conglomeration as moving away from the draw plate to the spinning chamber. For the first time the algorithm of techno-logical measures has been developed which allows reducing the amount of dust discharge without poorer quality of threads. On the basis of made researches there has been developed and patented the individual device for detection of influence of air pollution on operators of mould-ing section which can be used as an indicator and stimulator of use of respiratory organs' protection means.