Influence of the velocity of the medium layer on its dynamic parameters in the process of vibration separation
Date
2022-02-22
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Видавництво Львівської політехніки
Lviv Politechnic Publishing House
Lviv Politechnic Publishing House
Abstract
A review of recent research in the field of vibration separation of bulk media has
been done. It was found that the productivity of the separation process is influenced not only by the
design characteristics of the vibrating separator, in particular the length, angle and capacity of the
working housing, but also the dynamic processes that occur in bulk medium during separation. The
efficiency of the separation process significantly depends on the mutual influence of the velocity of
the bulk medium along the separator sieve and its amplitude-frequency characteristics. Based on the
review, the relevance of further study of these parameters was established. Using the methods of
nonlinear mechanics, a mathematical model of the motion of the layer of bulk medium on the sieve
of the vibrating separator was built. The layer of bulk medium was modeled by an elastic beam,
which is in contact elastically, rigidly, or as hinged. Graphical dependences of the influence of the
frequency of external perturbation and the velocity of the bulk medium along the sieve of the
separator on its oscillation amplitude were obtained. The obtained mathematical model and graphical
dependences showed that small velocities of the medium layer lead to an increase in the amplitude
of oscillations of the bulk medium and a decrease in its frequency of oscillations, which increases
the permeability of medium particles and increases the productivity of the separation process. The
obtained researches allow us to increase the efficiency of the separation process, to regulate the
processes that take place in the bulk medium and to increase the speed of its passage through the
sieve openings. The constructed mathematical model can serve as a basis for further studies of the
influence of changes in the physical and mechanical characteristics of the bulk medium on its
dynamic parameters in the process of vibration separation.
Description
Keywords
vibrating separator, bulk medium, amplitude-frequency characteristics, dynamic parameters
Citation
Rebot D. Influence of the velocity of the medium layer on its dynamic parameters in the process of vibration separation / Dariya Rebot, Artom Babii // Ukrainian Journal of Mechanical Engineering and Materials Science. — Lviv : Lviv Politechnic Publishing House, 2022. — Vol 8. — No 2. — P. 33–40.