Hui Zhao 1,2 , Pengrong Xu 3 , and Yanjun Li This email address is being protected from spambots. You need JavaScript enabled to view it. 4

1Tianjin Light Industry Vocational Technical College, 300350 Tianjin, China
2China Light Industry Precision Mold Engineering Technology Research Center,300350 Tianjin, China
3Tianjin AnZhen Technology Company, 300350 Tianjin, China
4Chinese Academy of Agricultural Mechanization Sciences, 100083 Beijing, China


 

Received: January 29, 2021
Accepted: April 25, 2021
Publication Date: August 1, 2021

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.


Download Citation: ||https://doi.org/10.6180/jase.202108_24(4).0018  


ABSTRACT


Based on the CFD simulation technology, the internal airflow field of the alfalfa seed harvester has been simulated and analyzed. The results showed that there was an uneven velocity distribution problem for the existing collection device, and this problem led to the increase of the seed loss rate. In order to optimize the internal airflow field of the alfalfa seed harvester, the air distributor of the existing device was adjusted: the length of the left air distributor was 200 mm, the installation angle was 15 °, the length of the right air distributor was 170 mm, and the installation angle was 20 °. The indoor experiment was carried on the internal airflow field of the adjusted structure, and the results showed that the uneven velocity distribution had been significantly improved. The improved device can effectively enhance the pneumatic conveying capacity of the acquisition device.


Keywords: Alfalfa Seed Harvester; Pneumatic conveying; Collection device; Internal airflow field


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