Increasing the efficiency of grain sieving on a vibrating sieve electric separator

Authors

  • O. Shvets Lviv National Environmental University
  • P. Koruniak Lviv National Environmental University

DOI:

https://doi.org/10.31734/agroengineering2022.26.064

Keywords:

seeds of grain crops, separation, vibrating grid electric separator, electric field, sieving efficiency

Abstract

One of the ways to improve the conditions for the passage of elongated components (oats, wheat, barley, rye, etc.) through the holes of the sieves is to create an electrostatic field above them. Theoretically, there is a certain initial value of the intensity of the electric field, at which the seed will start to orient itself in it. The optimum tension value will be the one at which the degree of orientation of the seeds on the oscillating sieve in the longitudinal direction will be maximum (when their longitudinal axis will be perpendicular to the sieve).

The paper describes the results of the study of the process of separation of mixtures of grain crops on a vibrating sieve electric separator and the justification of the optimal parameters of the electric field intensity E and the amplitude of oscillations A of the separator sieve.

The paper describes the results of the study of the process of separation of mixtures of grain crops on a vibrating sieve electric separator and the justification of the optimal parameters of the electric field intensity E and the amplitude of oscillations A of the separator sieve. The results of experimental studies showed that the effect of the electric field on the seeds of different crops is not the same. It manifests itself least on wheat seeds, since the number of seeds oriented in the electric field was about 50 %. For barley seeds, the studied indicator had a value of 65 %. The maximum percentage of oriented oat seeds at the maximum intensity of the electric field over the sieve of 6.67 kV/cm was about 80 % of the seeds. It was found that with an increase in the intensity of the electric field, the percentage of oriented seeds increases. This also affects the intensity of its sifting through the sieve. When the intensity of the electric field increased to the maximum value, the content of the sifted fraction of wheat in the eastern fraction decreased by 20...23 %, barley – by 20...30%, oats – by 47 %. The optimal operating parameters of the vibrating screen electric separator during the separation of grain crops will be the electric field strength in the working zone of separation Е = 5...6.5 kV/cm, and the amplitude of vibration of the screen of the experimental sample of the separator A = 1...1.5 mm.

References

Arnold, A. E., Kamenir, E.A., & Lihachev, B. S. (1987). Obosnovanie tekhnologicheskoy shemyi razdeleniya semyan ovsa. Mekhanizatsiya i elektrifikatsiya selskogo khozyaystva, 12, 10-12.

Basov, A. M. (1986). Eliektrozernoochistiielnyie mashiny. Tieoriia konstruktsii i raschot. Moskva: Mashynostroenye.

Basov, A. M., Bykov, V. H., Laptev, A. V., & Fain, V. B. (1985). Elektrotekhnolohiia. Moskva: Ahropromizdat.

Drincha, V. M. (2006). Issledovanie separatsii semyan i razrabotka mashinnyih tehnologiy ih podgotovki. Voronezh: NPO «MEDOK».

Husiev, V. A., Dudariev I. M., & Tokarchuk M. V. (2019). Ohliad konstruktsii separatoriv sypkykh materialiv. Silskohospodarski mashyny: Zb. nauk. statei (Vyp. 42, pp. 20-28). Lutsk: Lutskyi NTU.

Koruniak, P. S., Shenbor, V. S., & Borovets, V. M. (1995). Vibratsiini transportery i transportni systemy z elektromahnitnym pryvodom dlia podachi zerna ta zerno produktiv. Mekhanizovani protsesy silskohospodarskoho vyrobnytstva: Zb. nauk. prats (s. 40-43). Lviv: LDSHI.

Koruniak, P., Borovets, V., & Shenbor, V. (2010). Doslidzhennia kutovykh kolyvan dvomasovykh vibratsiinykh mashyn. Visnyk Lvivskoho natsionalnoho ahrarnoho universytetu. Ahroinzhenerni doslidzhennia, 14, 317-323.

Kosilov, N. I. (1983). Sostoyanie i tendentsii sovershenstvovaniya zernouborochnyih mashin: Ucheb. posobie. Chelyabinsk.

Matviichuk, V. A., Rubanenko, O. Ye., Stadniichuk, I. P. (2020). Elektrotekhnolohii v APK: Navch. posib. Vinnytsia: Tvory.

Mykhailov, A. D. (2012). Mashyny, ahrehaty ta kompleksy dlia pisliazbyralnoi obrobky zerna i nasinnia. Kharkiv: KhNTUSH im. P. Vasylenka.

Povydailo, V. O. (2004). Vibratsiini protsesy ta obladnannia. Lviv: NU «Lvivska politekhnika».

Shmyhel, V. V. (1978). Oriientatsiia siemian v elektrostatichieskom polie. Mekhanizatsiia i eliektrifikatsiia selskoho khoziaistva, 3, 36-38.

Shmyhel, V. V. (1979). Kharakter dvizheniia chastits na koliebliashchiemsia eliektrodie. Mekhanizatsiia i eliektrifikatsiia selskoho khoziaistva, 2, 36-37.

Shvets, O. P. (2020). Sposib intensyfikatsii protsesu rozdilennia zerna na reshetakh. Vcheni Lvivskoho natsionalnoho ahrarnoho universytetu vyrobnytstvu: Kataloh innovatsiinykh rozrobok (Vyp. 20, p. 53). Lviv: LNAU.

Shvets, O., & Baranovskyi, M. (2020). Doslidzhennia mozhlyvosti separuvannia nasinnia raihrasu pasovyshchnoho. Visnyk Lvivskoho natsionalnoho ahrarnoho universytetu. Ahroinzhenerni doslidzhennia, 24, 63-68.

Vasilenko, P. M. (1960). Teoriya dvizheniya chastits po sherohovatyim poverhnostyam selskohozyaystvennyih mashin. Kiev: UASHN.

Voitiuk, D. H., Yatsun, S. S., & Dovzhyk, M. Ya. (2008). Silskohospodarski mashyny: osnovy teorii ta rozrakhunku: navch. posib. dlia studtntiv VNZ. Sumy: Univ. kn.

Yermak, V. P. Bohdanov, Ye. V., & Ilchenok, A. A. (2012). Klasyfikatsiia zasobiv separatsii ta konstruktsii mashyn dlia vidboru nasinnia z vysokymy posivnymy vlastyvostiamy. Zbirnyk naukovykh prats Luhanskoho natsionalnoho ahrarnoho universytetu, 35, 127-132.

Zaika, P. M. (2006). Teoriia silskohospodarskykh mashyn. Ochystka i sortuvannia nasinnia. Kharkiv: Oko.

Zakharov, D. O. (2017). Elektrofizychni metody obrobky silskohospodarskoi produktsii: Metod. rekomendatsii. Mykolaiv: Mykolaiv. NAU.

Ziulin, A. N. (1977). Issledovanie protsessa separatsii zerna po dline chastits na reshetnom obogatitele k trieru: Nauchnyiy otchet VIM. Moskva: VIM.

Published

2023-03-21

How to Cite

Shvets О. ., & Koruniak П. . (2023). Increasing the efficiency of grain sieving on a vibrating sieve electric separator. Bulletin of Lviv National Environmental University. Series Agroengineering Research, (26), 64–70. https://doi.org/10.31734/agroengineering2022.26.064

Issue

Section

TECHNOLOGICAL PROCESSES AND EFFICIENT MACHINE USE IN AGRO ENGINEERING

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