Experiment of air-suction cotton precision metering mechanism
LI Ya-xiong · Guangdong nongye kexue · 2013
An air-suction cotton precision metering mechanism was developed,its structure,working principle and primary working parameter were analyzed in the paper.On fixed condition that the seed drop-off angle was 30° and the sucker’s diameter was Ф3.2 mm,applying orthogonal test method,researched vacuum and working speed which influenced the flow-performance.The test results indicate that the increasing vacuum can improve working speed,but when the vacuum achieves 4.5 kPa,it can influence little;the metering mechanism can work better when the vacuum above 4.5 kPa and the working speed under 1.0 m/s,the rate of single seed was more than 98.67%,the synthetical rate of seed was more than 99%,the multiples was less than 0.67%,and the miss was less than 0.67%.