Vibrations in engineering and technology

Piven Mykhailo – Candidate of Technical Sciences, Associate Professor of the Department of Physics and Theoretical Mechanics, Petro Vasylenko Kharkiv National Technical University of Agriculture 

(44, Alchevskikh Str., Kharkiv, Ukraine 61022, е-mail: m.v.piven@gmail.com).

The efficiency of grain mixtures separation is to a considerable extent defined by the sieve loading. The presence of overloading and underloading segments leads to the decline of quality and productivity of the separation process.

The article presents the research results of influence of initial mixture serve size on a distribution process of the specific loading on a inclined flat vibrating sieve. For research of process the mathematic models of spatial motion of a loose mixture flow along the inclined vibro-sieve of finite width is used. The boundary conditions on the surfaces which restrict the volume of the loose mixture are made. Influence of sifting of mixture on the process of loading was not taken into account.

Regularities of change of the specific loading on length and width of sieve have been investigated. It have been determined that change of size of the initial specific loading influences substantially on mutual location of overloading and underloading segments of working surface, their area and amount.

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