Design and experiment of an air-suction potato seed metering device  

作　　者：LüJinqing Yang Ying Li Zihui Shang Qinqin Li Jicheng Liu Zhongyuan 

机构地区：[1]Department of Engineering,Northeast Agricultural University,Harbin 150030,China

出　　处：《International Journal of Agricultural and Biological Engineering》2016年第5期33-42,共10页国际农业与生物工程学报（英文）

基　　金：the China Agriculture Research System Special Foundation CARS-10-P22;National Science and Technology Support Project 2014BAD06B03;Yunnan Province Winter Pollution-free Yield Technology System Construction and Application Projects Funded 2014YNC001;Heilongjiang Province Key Science and Technology Project GA15B401.

摘　　要：An air-suction potato seed metering device was designed to improve the performance of the large-size seed crops planting equipment and provide a solution for problems on the mechanical potato seeder,such as high multiple-seeding index,high missing-seeding index,low qualified index,and limited versatility.The main structure and operation parameters in terms of rotating speed of the device,seeds height and pickup vacuum pressure were determined by theoretical analysis.Two orthogonal tests,conventional tuber(the triaxial average diameter is about 38-57 mm)test and mini-tuber(the triaxial average diameter is about 12-36 mm)test,were conducted to analyze the influences of these factors on the quality of seeding.The multiple-seeding index,missing-seeding index and qualified index were chosen for evaluating the working performance.The results of conventional tuber test showed that,the multiple-seeding index was 1.1%,the missing-seeding index was 0.8%and the qualified index was 98.1%under conditions of the 30 r/min rotating speed,25 cm seeds height and 10 kPa pickup vacuum pressure.The results of mini-tuber test showed that the multiple-seeding index was 0.5%,the missing-seeding index was 0.6%and the qualified index was 98.9%under conditions of 35 r/min rotating speed,17 cm seeds height and 3.5 kPa pickup vacuum.The working performances of the device can meet the requirements of precision seeding.

关 键 词：AIR-SUCTION seed metering device mini-tuber precision seeding POTATO pickup vacuum 

分 类 号：O57[理学—粒子物理与原子核物理]