Design and Test of Electromagnetic Linear Vibration Millet Essence Small Amount Seeding Device

Aiming at problems of difficult seeding and heavy workload of seedling thinning of millet，according to agronomic requirement of small amount of seeding without seedling thinning of millet，an electromagnetic linear vibration type of small amount of seeding device of millet sperm was developed.According to national standard，displacement stability and uniformity of seed metering device were tested.Results showed that displacement stability was the best when amplitude was 0.06～0.22 mm and cross-section shape of seeding trough was rectangular（8 mm×3 mm），and coefficient of variation was less than 2.6%.When cross-section of seeding trough was rectangular，operating speed were 0.8，1.0 and 1.2 m/s，corresponding amplitudes were 0.10，0.12 and 0.14 mm，respectively，average number of seeds in 100 mm section was 7.6，7.0 and 7.2，respectively，and variation coefficient of uniformity was less than 22.75%.Experimental index values of metering device could meet requirements of national grain sowing standards，so could be used for small grain sowing such as millet.