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Original scientific paper

https://doi.org/10.17794/rgn.2023.4.3

INCREASING THE INSULATION PROPERTIES OF FILTER RESPIRATORS TO PROTECT MINERS’ RESPIRATORY ORGANS FROM DUST

Serhii Cheberiachko ; Dnipro University of Technology, 19, Dmytra Yavornytskoho Avenue, Dnipro, 49005, Ukraine
Yuriy Cheberiachko ; Dnipro University of Technology, 19, Dmytra Yavornytskoho Avenue, Dnipro, 49005, Ukraine
Oleg Deryugin ; Dnipro University of Technology, 19, Dmytra Yavornytskoho Avenue, Dnipro, 49005, Ukraine
Bohdan Kravchenko ; Dnipro University of Technology, 19, Dmytra Yavornytskoho Avenue, Dnipro, 49005, Ukraine
Tetiana Nehrii ; Kyiv National University of Construction and Architecture, 31, Povitroflotskyi Avenue, Kyiv, 02000, Ukraine
Serhii Nehrii orcid id orcid.org/0000-0002-3195-8401 ; Donetsk National Technical University, 2, Shybankova Square, Pokrovsk, Donetsk region, 85300, Ukraine
Oksana Zolotarova ; Donetsk National Technical University, 2, Shybankova Square, Pokrovsk, Donetsk region, 85300, Ukraine


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Abstract

To increase the insulating properties of elastomeric half-masks, it is suggested to perforate the obturator in the area of the nasal bridge, chin and cheeks, which allows for adjustment in its size, thus preventing the occurrence of wrinkles on the user’s face in the areas which are the individual features of a particular user’s face. Three versions of the perforated filter respirator obturator have been proposed: in the first, the holes are made along the entire perimeter of the obturator; in the second, the holes are only in the area of the cheeks and nasal bridge; in the third, incisions with a diameter of 5 mm are made in the area of the nasal bridge and cheeks. The result of modelling a set of alternative solutions taking into account the coefficient of protection of filter respirator half-masks, the distribution of compressive forces, which are determined in the environment of the packages “ANSYS” and “Solid works”, has been obtained on the basis of main indicators of the proposed models. To make a decision on choosing the best model, the mass of the elastomeric half mask, its dimensions and the complexity of the design were additionally considered. On the basis of expert evaluation, according to the described procedure for determining the utility function of the factors from their values, it has been defined that the second model of the half-mask is characterized by the best parameters. Conducted laboratory studies to determine the aerosol absorption coefficient by the obturation line showed the lowest indicator in the second option.

Keywords

Dustiness of the working space; occupational disease; filtering respirator; anthropometric parameters of the face; parameters of the respirator

Hrčak ID:

309869

URI

https://hrcak.srce.hr/309869

Publication date:

9.11.2023.

Article data in other languages: croatian

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