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DOI: 10.15507/2658-4123.032.202203.355-372

Studying the Innovative Flax Pulling Process in Apparatuses with Transverse Pulling Channels

Roman A. Rostovtsev
Director, Federal Scientific Center for Bast Crops (17/56 Komsomolskiy Prospect, Tver 170041, Russian Federation), Dr.Sci. (Engr.), Professor of RAS, ORCID: https://orcid.org/0000-0003-0368-1035, Researcher ID: AIE-3974-2022, This email address is being protected from spambots. You need JavaScript enabled to view it.

Mixail M. Kovalev
Chief Scientist, Federal Scientific Center for Bast Crops (17/56 Komsomolskiy Prospect, Tver 170041, Russian Federation), Dr.Sci. (Engr.), ORCID: https://orcid.org/0000-0003-2424-4205, Researcher ID: AAT-4775-2021, This email address is being protected from spambots. You need JavaScript enabled to view it.

Gennady A. Perov
Leading Researcher, Federal Scientific Center for Bast Crops (17/56 Komsomolskiy Prospect, Tver 170041, Russian Federation), Cand.Sci. (Engr.), ORCID: https://orcid.org/0000-0002-5830-6817, Researcher ID: AAB-5326-2022, This email address is being protected from spambots. You need JavaScript enabled to view it.

Sergey V. Prosolov
Researcher, Federal Scientific Center for Bast Crops (17/56 Komsomolskiy Prospect, Tver 170041, Russian Federation), ORCID: https://orcid.org/0000-0002-5879-905X, Researcher ID: GPF-8674-2022, This email address is being protected from spambots. You need JavaScript enabled to view it.

Abstract 
Introduction. During fiber-flax harvesting, the working tools of pulling units actively interact with the flax plants. The flax pulling unit with transverse tape-disc pulling channels is characterized by the separation of technological plant flows resulting in the loss of seeds and damage to the flax stems. The aim of the work is the theoretical and experimental substantiation of changes in the design of the pulling units with transverse tape-disc pulling channels by eliminating the separation of technological plant flows during flax pulling.
Materials and Methods. Experimental studies to substantiate the parameters and modes of the pulling unit operation were carried out according to available and newly developed methodologies, while the evaluation of flax products was carried out according to current GOSTs (Russian National standards). There was determined the influence of the flax ripeness stages, flax yield, and a type of pulling unit on the indicators of separation of technological plant flows and on seed losses. The influence of the pulling unit type, operating width of the pulling section, and the pulling unit speed on the indicators of processing flax straw was also established.
Results. There was obtained the dependence for determining the flax stem base elongation, taking into account the seed boll cohesion. The design of the modernized flax pulling unit was used to assess the effect of reducing the flax stem base elongation and eliminating the separation of technological plant flows during pulling on the reduction of seed loss and increase in the yield of flax longs. In the improved flax harvester, the frame elements are positioned behind the pulling unit. Thanks to the modernization of the pulling unit, the flax straw was of higher quality: 1.5 numbers at THLN-1.9M and 1.25 numbers at THLN-1.9P.
Discussion and Conclusion. The modernized pulling unit THLN-1,9M during flax harvesting in the stage of early yellow ripeness, compared with the unit THLN-1,9P, can reduce seed loss by 1.4-2.0%, increased output of long fiber by 1.3%. The production of flax longs increases to 0.45 of its number.

Keywords: long-fiber flax, plants, stems, pulling channel, stem extension, bolls, seeds, flax straw, long fiber

Funding: This work was supported by the Ministry of Science and Higher Education of the Russian Federation within the framework of the State Assignment for the Federal Scientific Center for Bast Crops (No. FGSS-2022-0005).

Conflict of interest: The authors declare no conflict of interest.

For citation: Rostovtsev R.A., Kovalev M.M., Perov G.A., Prоsolov S.V. Studying the Innovative Flax Pulling Process in Apparatuses with Transverse Pulling Channels. Engineering Technologies and Systems. 2022;32(3):355-372. doi: https://doi.org/10.15507/2658-4123.032.202203.355-372

Contribution of the authors:
R. A. Rostovtsev – formulation of the concept of research, problem statement, analysis of research results.
M. M. Kovalev – scientific guidance, critical analysis of research results, development and refinement of the solution.
G. A. Perov – determination of research methodology, collection and analysis of materials on the topic of research, conducting research, finalizing the text.
S. V. Prosolov – preparation and analysis of literature data, research and processing of experimental data.

All authors have read and approved the final manuscript.

Submitted 17.05.2022; approved after reviewing 13.06.2022;
accepted for publication 20.06.2022

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