: 128-136
Received: August 12, 2023
Revised: September 28, 2023
Accepted: November 01, 2023
Lviv Polytechnic National University
Lviv Polytechnic National University
Lviv Polytechnic National University, Ukraine

Problem statement. The production of oil crops and products of their processing has significantly increased in recent decades. Vegetable oils are mainly produced by pressing oilcontaining raw materials using screw-type presses. During the press operation, there is a need to adapt its working regimes to the seeds of individual crops while ensuring the possibility of adjusting certain operation parameters that are set technologically. Purpose. The main purpose of the present research consists in analyzing the design peculiarities of the enhanced screw-type press for extracting oil from different oil crops and oil-containing raw materials. In addition, there is set a goal of analyzing the screw for stresses and strains. Methodology. The finite-element method integrated into the SolidWorks software is used for analyzing the stress-strain state of the pressing screw at the hardest loading conditions. Results. The obtained results are presented in the form of the stresses and strain distribution along the screw shaft and flights. The corresponding 3D and 2D stress-strain diagrams are plotted and thoroughly analyzed. Originality. The zones of the screw overloading are defined and the possibilities of providing the screw reliability and durability are considered. Practical value. The proposed design of the screw-type press can be implemented in practice for performing pressing operations while extracting oil from different oil crops and oil-containing raw materials. The results of testing the screw stress-strain state can be used for predicting the screw reliability and durability at the stage of its designing. Scopes of further investigations. Further investigations on the topic of the present research can be focused on deriving the mathematical model describing the force and pressure conditions applied to the screw shaft and flights

1. R. Ortiz et al., “Oil crops for the future,” Current Opinion in Plant Biology, vol. 56, pp. 181–189, Aug. 2020.

2. G. C. Brêda et al., “Current approaches to use oil crops by-products for biodiesel and biolubricant production: Focus on biocatalysis,” Bioresource Technology Reports, vol. 18, p. 101030, Jun. 2022.

3. T. S. Brand, J. H. . Van Zyl, and O. Dreyer, “The effect of formaldehyde treatment of canola oilcake meal and sweet lupins on the in situ dry matter and crude protein digestibility,” South African Journal of Animal Science, vol. 53, no. 1, pp. 91–100, Apr. 2023.

4. A. Petraru and S. Amariei, “Sunflower oilcake as a potential source for the development of edible membranes,” Membranes (Basel), vol. 12, no. 8, p. 789, Aug. 2022.

5. A. Petraru and S. Amariei, “A novel approach about edible packaging materials based on oilcakes - A review,” Polymers (Basel), vol. 15, no. 16, p. 3431, Aug. 2023.

6. E. Afkhami Sarai, S. Azadmard-Damirchi, and M. Gharekhani, “Oil extraction from black cumin seeds incorporated with rosemary leaf by cold screw press and evaluation of some of its qualitative properties,” Food Science and Technology, vol. 18, no. 113, pp. 225–232, Jul. 2021.

7. M. M. K. Bhuiya, M. Rasul, M. Khan, N. Ashwath, and M. Mofijur, “Comparison of oil extraction between screw press and solvent (n-hexane) extraction technique from beauty leaf (Calophyllum inophyllum L.) feedstock,” Industrial Crops and Products, vol. 144, p. 112024, Feb. 2020.

8. W. Sakdasri et al., “Optimization of yield and thymoquinone content of screw press-extracted black cumin seed oil using response surface methodology,” Industrial Crops and Products, vol. 191, p. 115901, Jan. 2023.

9. T. Kiss, V. Mašán, and P. Híc, “Antioxidant capacity, total phenolic compounds and fatty acids composition in walnut oil and bagasse pellets produced at different parameters of the screw press,” Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, vol. 68, no. 3, pp. 519–527, Jul. 2020. 

10. V. M. Fantino, R. M. Bodoira, M. C. Penci, P. D. Ribotta, and M. L. Martínez, “Effect of screw-press extraction process parameters on the recovery and quality of pistachio oil,” Grasas y Aceites, vol. 71, no. 2, p. 360, Jun. 2020.

11. E. S. Louis, C. O. Akubuo, and E. U. Odigboh, “Effect of some kernel factors on palm kernel oil extraction using a screw press,” Agricultural Engineering International: CIGR Journal, vol. 22, no. 1, pp. 156–161, 2020.

12. S. Nurjanah et al., “Study on the pressing process of kemiri sunan’s oil (Reutealis trisperma) using screwpress machine at different feed material levels,” IOP Conference Series: Earth and Environmental Science, vol. 355, no. 1, p. 012074, Nov. 2019.

13. O. A. Fakayode and E. A. Ajav, “Development, testing and optimization of a screw press oil expeller for moringa (Moringa oleifera) seeds,” Agricultural Research, vol. 8, no. 1, pp. 102–115, Mar. 2019. S. Louis, C. O. Akubuo, and E. U. Odigboh, “Effect of some kernel factors on palm kernel oil extraction using a screw press,” Agricultural Engineering International: CIGR Journal, vol. 22, no. 1, pp. 156–161, 2020.

14. A. Kabutey, D. Herak, C. Mizera, and P. Hrabe, “Theoretical analysis of force, pressure and energy distributions of bulk oil palm kernels along the screwline of a mechanical screw press FL 200,” Agronomy Research, vol. 17, no. 5, pp. 1927–1941, 2019.

15. Y. S. Indartono, H. Heriawan, and I. A. Kartika, “Innovative and flexible single screw press for the oil extraction of Calophyllum seeds,” Research in Agricultural Engineering, vol. 65, no. 3, pp. 91–97, Sep. 2019.

16. M. Mursalykova et al., “Mathematical modeling of screw press configuration for processing safflower oil,” Applied Sciences, vol. 13, no. 5, p. 3057, Feb. 2023.

17. Mizera, D. Herák, P. Hrebĕ, and A. Kabutey, “Extraction of oil from rapeseed using duo screw press,” Agronomy Research, vol. 16, no. Special Issue 1, pp. 1118–1123, 2018.

18. C. Vasilachi and S.-S. Biriş, “Modelling by Finite Element Method of the twin-screw of a press for obtaining grape seed oil,” E3S Web of Conferences, vol. 112, p. 03022, Aug. 2019.

19. L. Lara-Ojeda, O. Bohórquez, and O. A. González-Estrada, “Numerical modeling of a domestic press for vegetable oil extraction using finite element analysis,” Journal of Physics: Conference Series, vol. 2046, no. 1, p. 012005, Oct. 2021.

20. R. Shevchuk and O. Sukach, “Test of the modernized screw oil press,” Bulletin of Lviv National Agrarian University. Agroengineering Research, vol. 24, no. 1, pp. 69–76, Dec. 2020.