Mazilin S.D., Yatsukh O.V., Mokhnatko I.N., Zoria M.V. Modelling of the process of dust-air flow movement in the flow sector of the rotary dust separator

Details

Parent Category: Geo-Technical Mechanics, 2018

Category: Geo-Technical Mechanics, 2018, Issue 139

Geoteh. meh. 2018,139, 116-123

DOI: https://doi.org/10.15407/geotm2018.02.116

MODELLING OF THE PROCESS OF DUST-AIR FLOW MOVEMENT IN THE FLOW SECTOR OF THE ROTARY DUST SEPARATOR

¹Mazilin S.D., ¹Yatsukh O.V., ¹Mokhnatko I.N., ¹Zoria M.V.

¹Tavriya State Agrotechnological University

UDC62.784.431:621.928.93

Language: Ukrainian

Abstract.

The article presents results of studies of the movement of dust-air flow in the flow sector of the rotary dust separators. It is shown that bringing the sanitary and hygienic working conditions of a tractor driver to standard norms  is a difficult but solvable problem, which includes a set of theoretical and practical tasks on substantiating technological and design parameters and modes for operation of a highly efficient rotary dust separator. The method of electrohydrodynamic analogies (EGDA) allows experimentally, with using simulation, to solve various problems of potential air movement. This method involves creation of a model with a certain electrically conductive material, as a rule, geometrically similar to concrete sector of the air movement. Using the EGDA method, a model of flow sector in the rotary dust separator with an orthogonal grid of current lines was constructed, which made it possible to calculate change in relative velocity of the dust-air flow along the height of the flow sector in the dust separator. It is established that in the area of the dust collector, the equipotential lines have an S-shaped curvature, which indicates the creation of reverse (vortex) jets in the cavity of the dust collector in the dust separator. It is proven that this is what contributes to improving efficiency of the dust separator by eliminating leakage of dust-laden air from the dust collector cavity into the axial-radial diffuser. Process of redistribution of the relative axial velocity of the dust-air flow in the flow sector of the dust separator was also modeled. It is stated that angle a of the straight line inclination to the vertical, which determines transition of dust collector cavity into the aux-radial diffuser, must be at least 25 ... 30^о. A new shape of the profile of the rotor blade upper edge is proposed, which will improve efficiency of separation of small dust particles (less than 3 microns) in the flow sector of dust separator. An improved rotary dust separator is recommended for installation in the cabins of domestic agricultural machinery.

Keywords: rotary dust separator, blade, inter-blade axial vortex, movement of dust particles, electrohydrodynamic analogy method.

References:

1. Barsukov, M.P., Voynalovich, O.V., Klitsenko, G.G., Barsukov, V.Ye. and Kirdan V.Ye. (2011), Vyrobnycha sanitariia u silskomu hospodarstvi [Industrial sanitation in agriculture], Osnova, Kyiv, UA.

2. Mazilin, S.D., Gcozdev, A.V. and Rogovoy, V.D. (1999) “Modelirovanie potokov v rotazionnom pyleotdelitele cictem ventiliatsii kabin selskokhoziaystvennikh mashin”, Visnyk Lvivskoho derzhavnoho universitetu: Ahroinzhenerni doslidzhennia, no. 3, pp. 190-194.

3. Mokhnatko I.M. (2009), “Experimental studies of counterflow rotary saw blade air”, Pratsi of Tavria State Agrotechnological University, vol. 9 (3), pp. 160-164.

4. Rogovoy, V.D. and Mazilin, S.D. (2010), “Simulation of the separation of dust particles in a rotary dust separator”, Pratsi of Tavria State Agrotechnological University: Tekhnika v silskokhoziaistvennom proizvodstve, vol. 1, no 9,  pp, 87-89.

5. Shtokman, E.A., Shilov, V.A., Novgorodskiy, T.A., Skorik, T.A. and Amerkhanov, R.A. (2007), Ventiliatsiia, kondizionirovanie i ochistka vozdukha na predpriiatiiakh pishchevoy promishlennosti [Ventilation, air conditioning and air purification at food industry enterprises],  ASV, Moscow, RU.

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About the authors:

Mazilin Sergii Dmytrorych, Candidate of Technical Sciences (Ph.D.), Associate Professor, Associate Professor of the Department of Civil Security, Tavriya State Agrotechnological University (TSATU), Melitopol, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Yatsukh Oleh Vasylovych, Candidate of Agricultural Sciences (Ph.D.), Associate Professor, Associate Professor of the Department of Civil Security, Tavriya State Agrotechnological University (TSATU), Melitopol, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Mokhnatko Iryna Mykolaivna, Candidate of Technical Sciences (Ph.D.), Associate Professor, Associate Professor of the Department of Civil Security, Tavriya State Agrotechnological University (TSATU), Melitopol, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Zoria Mykhailo Vitaliiovych, Candidate of Technical Sciences (Ph.D.), Senior Lecturer at the Department of Civil Security, Tavriya State Agrotechnological University (TSATU), Melitopol, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

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