Determination of the optimal modes of operation of the clover grater and scarifier KS-0.3 P during scarification

The article provides information about the features of the device, the quality of work of the prototype of a new 25...30 % more productive clover grater and scarifier KS-0.3 P in comparison with the analogue KS-0.2 P. KS-0.3P includes a drum-type wiping and scarifying device, a pneumatic separation device, a two-stage exhaust air purification system containing a cyclone and a fabric filter. The increase in the productivity of the new machine is achieved by increasing the diameter of the drum with a solid wiping surface to 0.45 m and the length of the oval deck with scarifying plates to 0.7 m. The solid grating surface of the drum is welded from steel rods of hexagonal profile No. 12 mounted on an edge. The deck covering the drum from below by 180° is made of round bars with a diameter of 10 mm and nine steel plates with a thickness of 2 mm and a width of 11 mm, evenly distributed along the length of the deck. When studying the technological process of clover grater and scarifier the method of mathematic planning of the experiment was used. The quality of scarification done was evaluated using the GOST 12038-84, GOST 12036-85 methodologies and additionally introduced indicator of variation of the number of germinated seeds. The material supply was regulated by the degree of opening of the flap in the loading hopper in the range from 0.2 to 0.4 t/h. The rotation frequency of the drum was changed by a frequency converter from 550 to 650 min-1. Eastern galega seeds met GOST 52325-2005 requirements. The experiments were carried out in three-fold repetition. As a result of an experimental study of the KS-0.3P cloverworm-scarifier during the scarification of the seeds of the Eastern galega, the ranges of the optimal drum rotation speed of 550... 650 min-1 and the material supply of 0.3... 0.4 t / h were determined, when the specified agrotechnical indicators were provided: the degree of scarification not less than 95.0 % and crushing not more than 1.5 %.

1. Kiselev N. P., Kormshchikov A. D., Nikiforova E. V., Prozorova I. N., Prozorov V. A., Kiselev S. N. Vyatka clovers. Kirov: GIPP «Vyatka», 1995. 276 p.

2. Promising resource-saving technology for the production of clover seeds for the Northern region of the Non-Chernozem Zone of Russia: methodological recommendations. Kirov: FGBNU «NIISKh Severo-Vostoka», 2015. 72 p.

3. Vlasov P. A. Scarification of perennial grass seeds. Dostizheniya nauki i tekhniki APK = Achievements of Science and Technology of AICis. 2006;(2):38-39. (In Russ.). URL: https://elibrary.ru/item.asp?id=10332826

4. Fedorenko V. F. Harvesting and post-harvest processing of grass seeds. Moscow: FGNU «Rosinformagrotekh», 2003. 268 p.

5. Chugunov S. V., Rozhkov G. A. Review of devices for drying and scarification of seeds of grasses. Journal of Advanced Research in Natural Science. 2020;(9):60-62. DOI: https://doi.org/10.26160/2572-4347-2020-9-60-62

6. Bouteiller X. P., Porté A. J., Mariette S., Monty A. Using automated sanding to homogeneously break seed dormancy in black locust (Robinia pseudoacacia L., Fabaceae). Seed Science Research. 2017;27(3):243-250. DOI: https://doi.org/10.1017/S0960258517000150

7. Lukas S. B., DeFrank J., Baldos O. C. Optimization of Waltheria indicaseed dormancy relief treatments and seed storage parameters. HortScience. 2016;51(9):1184-1187. DOI: https://doi.org/10.21273/HORTSCI10720-16

8. Luo J., Sun J., Yang L., Wang Z., Li W., Dong Z. Design and experiment of type 9BQS-3.0 pneumatic scarifying and sowing compound operation machine. Nongye Jixie Xuebao. Transactions of the Chinese Society for Agricultural Machinery. 2013;44(Supp1):51-55. DOI: https://doi.org/10.6041/j.issn.1000-1298.2013.S1.010

9. Burkov A. I., Simonov M. V., Mokiev V. Yu. The expansion of technological capabilities of machine for extraction grass seed drum type with tangential feed. Sel'skiy mekhanizator. 2016;(4):12-15. (In Russ.). URL: https://elibrary.ru/item.asp?id=27261318

10. Burkov A. I., Simonov M. V., Mokiev V. J. Research of clover-grater-and-scarificator KS-0.2 with oval type deck at seeds scarification. Agrarnaya nauka Evro-Severo-Vostoka = Agricultural Science Euro-North-East. 2017;(6):74-77. (In Russ.). DOI: https://doi.org/10.30766/2072-9081.2017.61.6.74-77

11. Burkov A. I., Glushkov A. A., Lazykin V. A., Mokiev V. Yu. Drum clover grater with pneumatic separator. Sel'skiy mekhanizator. 2020;(5-6):8-9. (In Russ.).

12. Burkov A. I., Simonov M. V., Mokiev V. Yu. Determination of indicators of the quality of the scarifiers grass seed. Mekhanizatsiya i elektrifikatsiya sel'skogo khozyaystva. 2014;(3):19-20. (In Russ.).