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Study and Testing of a Front-Blowing and Rear-Suction Enhanced Cleaning Technology for Grain Combine Harvesters

dc.contributor.authorJianning Yin
dc.contributor.authorYipeng Cui
dc.contributor.authorZehao Zha
dc.contributor.authorQiming Yu
dc.contributor.authorPengxuan Guan
dc.contributor.authorYang Wang
dc.contributor.authorXinxin Wang
dc.contributor.authorDuanyang Geng
dc.contributor.otherSchool of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
dc.contributor.otherSchool of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
dc.contributor.otherSchool of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
dc.contributor.otherSchool of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
dc.contributor.otherSchool of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
dc.contributor.otherSchool of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
dc.contributor.otherSchool of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
dc.contributor.otherSchool of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
dc.date.accessioned2025-08-27T14:00:09Z
dc.date.accessioned2025-10-08T09:00:28Z
dc.date.available2025-10-08T09:00:28Z
dc.date.issued01-08-2025
dc.identifier.urihttp://digilib.fisipol.ugm.ac.id/repo/handle/15717717/38573
dc.description.abstractTo address the issue in high-throughput longitudinal axial-flow grain combine harvester cleaning systems, in which the extended length of the cleaning chamber results in airflow velocity attenuation and makes it difficult to efficiently and rapidly remove light impurities, a front-blowing and rear-suction enhanced cleaning technology and device was developed. Based on the investigation of the movement characteristics of the cleaning airflow within the cleaning chamber, a theoretical model was established to describe the velocity variation of the front-blowing and rear-suction enhanced cleaning airflow. CFD simulation software was employed to conduct a comparative analysis of the airflow field structure before and after improvement, aiming to identify the influence patterns of key structural parameters on the airflow field distribution. An orthogonal experiment with three factors and three levels was conducted on the improved cleaning system, focusing on the suction fan speed, vertical installation height of the suction fan, and horizontal distance between the suction fan and the sieve surface. The influence of each factor on the airflow field was analyzed, and the optimal parameter combination was obtained. When the suction fan speed was 2275 r/min, the vertical installation height was 72.5 mm, the horizontal distance to the sieve surface was 385 mm, and the airflow non-uniformity coefficient at the rear part of the screen surface was 11.17%, with a relative error of 4.39% compared to the optimization result. Finally, bench tests were conducted to verify the accuracy of the simulation results. Compared to that before improvement, the airflow non-uniformity coefficient at the rear part of the screen surface in the cleaning chamber was reduced by 59.43%, significantly improving the uniformity of airflow distribution. These findings provide both theoretical and technical support for improving the cleaning efficiency and operational performance of high-throughput grain combine harvesters.
dc.language.isoEN
dc.publisherMDPI AG
dc.subject.lccAgriculture (General)
dc.titleStudy and Testing of a Front-Blowing and Rear-Suction Enhanced Cleaning Technology for Grain Combine Harvesters
dc.typeArticle
dc.description.keywordsgrain combine harvester
dc.description.keywordscleaning system
dc.description.keywordsfront-blowing and rear-suction
dc.description.keywordsCFD simulation
dc.description.keywordsairflow non-uniformity coefficient
dc.description.doi10.3390/agriculture15161722
dc.title.journalAgriculture
dc.identifier.e-issn2077-0472
dc.identifier.oaioai:doaj.org/journal:77af7aaa26364d67bc14bf3ca6c15af7
dc.journal.infoVolume 15, Issue 16


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