Design and Experimentation of a Longitudinal Axial Flow Sunflower Oil Threshing Device

Wei Liu, Lina Ma, Wangyuan Zong, Jinyi Liu (), Mao Li and Guodang Lian
Additional contact information
Wei Liu: College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
Lina Ma: College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
Wangyuan Zong: College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
Jinyi Liu: Mechanical and Electrical Engineering College, Hainan University, Haikou 570228, China
Mao Li: College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
Guodang Lian: College of Engineering, Huazhong Agricultural University, Wuhan 430070, China

Agriculture, 2023, vol. 13, issue 4, 1-16

Abstract: To address the problems of threshing loss and high impurity rate during sunflower oil harvesting, a vertical axial flow sunflower oil threshing device was designed. To reduce severe breakage of the sunflower plate and high entrainment loss rate when threshing by the traditional grating gravure sieve, a circular tube-type gravure screen was designed, and a contact model describing the grain rod, sunflower pan, and gravure screen was analyzed. The results show that reducing the diameter of the gravure screen round tubes can effectively reduce breakage of the sunflower pan. The range of the threshing gap, drum speed, and feed amount were determined by a single-factor test. Design-Expert software was used to design a response surface experiment: threshing gap, drum rotation speed, and feed amount were used as test factors, and the threshing loss rate of grains and the grain mass ratio of undersize grains were used as evaluation indicators. A regression model between test factors and evaluation indexes was established by variance analysis of the test results. A software-based numerical optimization function was used to reduce the loss rate of grains and increase the grain mass ratio of undersize grains. The optimal parameters of the threshing device were obtained by multi-objective optimization of all factors: the separation gap was 24.90 mm, drum speed was 244.14 r/min, feed amount was 2.95 kg/s, the threshing loss rate grains was 2.35%, and the grain mass ratio of undersized grains was 81.34%. This study can provide a reference for the design of a combined sunflower oil harvester threshing device.

Keywords: sunflower oil harvest; grain loss rate; grain mass ratio of undersize; longitudinal flow; parameter optimization (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/2077-0472/13/4/876/pdf (application/pdf)
https://www.mdpi.com/2077-0472/13/4/876/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jagris:v:13:y:2023:i:4:p:876-:d:1124490

Access Statistics for this article

Agriculture is currently edited by Ms. Leda Xuan

More articles in Agriculture from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().