Drifting property of falling oil rape seeds in longitudinal positive pressure airflow field without stalks

• Published in: Nong ye gong cheng xue bao Vol. 31; no. 3; pp. 70 - 76
• Main Authors: Zong, Wangyuan, Huang, Xiaomao, Pan, Haibing, Zha, Xiantao, Wang, Tingting
• Format: Journal Article
• Language: Chinese
• Published: 01.02.2015
• Subjects: Airflow; Collection; Elevation angle; Falling; Harvesters; Monomers; Nozzles; Rape; Seeds
• ISSN: 1002-6819
• DOI: 10.3969/j.issn.1002-6819.2015.03.010

This paper proposed a novel method to collect the falling rape seeds in front of the harvester header by a line-by-line mode with the longitudinal airflow of positive pressure for rape which is mechanically transplanted or sown. Firstly, with a bench trial device, an orthogonal experiment based on the scheme of L9(34) was conducted to determine the significant level of relevant factors impacting on the collection effect of falling rape seeds in field of longitudinal positive pressure airflow without no straw. Experiments showed that factors affecting the collection amount of the falling seeds are the height and length of the collection monomer, the operating current frequency of the turbine (which determines the airflow velocity at the front place of the nozzle) and the elevation angle of the nozzle respectively, in which the effect of the first three factors on the collection performance are significant, while the effect of the elevation angle of the nozzle is not significant.