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2015 | 29 | 2 |
Tytuł artykułu

Geometrical and friction properties of perennial grasses and their weeds in view of an electro-separation method

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Many seed mixtures of herbs are difficult to separate. This is confirmed by studies determining the basic geometrical and friction properties of the seeds of perennial grasses and seeds of their weeds. The results show that in most cases the value of their geometrical parameters (length, thickness, and width) and friction properties (friction coefficients for different external surfaces of internal friction coefficients) are substantially similar and differ slightly among each other. This is the evidence that these properties are impractical to use in the process of separation as signs of divisibility. In the paper, a method for electro-separation of seed mixtures of herbs based on the use of complex physical, mechanical properties and electrical components in the separation are presented. The electric field that acts as an additional working body allows considering the surface conditions and biological status of seed mixtures of particles and significantly expands the functionality of the separators. Confirmation of the effectiveness of the proposed method for separation can be seen in the example of purification of red clover and sorrel seeds. By imposition of an electric field on an inclined moving separating plane, we can completely separate weed seeds from the main crop. The results confirm the effectiveness of the electro-separating method.
Słowa kluczowe
Wydawca
-
Rocznik
Tom
29
Numer
2
Opis fizyczny
p.185-191,fig.,ref.
Twórcy
  • Lviv National Agriculture University, 80381 Lviv-Dublyany, Ukraine
autor
  • Lviv National Agriculture University, 80381 Lviv-Dublyany, Ukraine
  • Lviv National Agriculture University, 80381 Lviv-Dublyany, Ukraine
autor
  • Institute of Agrophysics, Polish Academy of Sciences, Doswiadczalna 4, 20-290 Lublin, Poland
autor
  • Institute of Agrophysics, Polish Academy of Sciences, Doswiadczalna 4, 20-290 Lublin, Poland
autor
  • Institute of Agrophysics, Polish Academy of Sciences, Doswiadczalna 4, 20-290 Lublin, Poland
Bibliografia
  • Anonymous, 2002. Council Directive 2002/55/EC. European Seed Association. http://www. euroseeds.org
  • Balasubramianian S., Singh K.K., and Kumar R., 2012. Physi-cal properties of coriander seeds at different moisture content. Int. Agrophys., 26, 419-422.
  • Ch’ng P.E., Abdullah M.H.R.O., Mathai E.J., and Yunus N.A., 2013. Some physical properties of ginkgo nuts and kernels. Int. Agrophys., 27, 485-489.
  • Eurocode 1, 2006. Basis of design and action on structure. Actions in silo and tanks. EN 1991-4.
  • Horabik J. and Molenda M., 1988. Force and contact area of wheat grain in friction. J. Agric. Eng. Res., 41(1), 33-42.
  • Horabik J. and Molenda M., 1989. Effect of moisture content on friction of wheat grain at single contact area. Powder, Handling Proces., 1(3), 277-279.
  • Kovalyshyn S.J., 1999. Choice of parameters of perennial grass seed processing on an electro-vibration separator (in Ukrainian). Ph.D. Thesis, Lviv National Agriculture University, Ukraine.
  • Kovalyshyn S.J., 2013. Research and methodological aspects of preparation of sowing material of species of small-seed plants. Inter-branch collection of topical works (in Ukrainian). Mechanisation Electrification Agriculture Ed., 97(1), 387-393.
  • Kovalyshyn S.J., Shvets O.P., Grundas S., and Tys J., 2013. Use of the electro-separation method for improvement of the utility value of winter rapeseeds. Int. Agrophys., 27, 491-494.
  • Molenda M., Horabik J., Grochowicz M., and Szot B., 1995. Friction of wheat grain (in Polish). Acta Agrophysica, 4, 1-88.
  • Molenda M., Thompson S.A., and Ross I.J., 2000. Friction of wheat on corrugated and smooth galvanized steel surfaces. J. Agric. Eng. Res., 77(2), 209-219.
  • Ovsiannikova L.K., Orlova S.S., and Sokolovska O.G., 2009. Comparative analysis of species of small seeds on the basis of their dimensional characteristics (in Ukrainian). Collection Research Works. Odesa National Agro-Technical Academy, 36(1), 121-126.
  • Ribaruk V.J., 1998. Agricultural machinery. Calculations Practice and Solutions of Operation Processes (in Ukrainian). (Eds V. J. Ribaruk, I.I. Lipka). Lviv National Agriculture University, Ukraine.
  • Samokish V.V., 2011. Results of a study on the coefficient of external friction of rape seed and seeds of goosegraas (Galium aparine) on various materials (in Ukrainian). Collection Research Works. Podolsk State Agro-Technical Academy, 9, 397-400.
  • Shevchuk V.V., 2011. Agricultural machinery. Collection of research works (in Ukrainian). Luck National University of Technology, 21(2), 229-234.
  • Tomiuk V.V., 2008 (Ed.). Determination of angle of external friction of rape seeds (in Ukrainian). News of Lviv National University of Agriculture: Engineering Results, 12(2), 598-602.
  • Zaika P.M., 2006. Theory of agricultural machines (in Ukrainian). Seed Cleaning Separation, 3, 25-30.
  • Zare D., Bakshipour A., and Chen G., 2013. Physical properties of cumin and caraway seeds. Int. Agrophys., 27, 491-494.
Uwagi
PL
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.agro-357cc15e-a661-48f2-a05d-b17e767d01c7
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