Open AccessTheoretical and Experimental Studies on Air-suction Roller-type Precision Seed-Metering Device
Author(s) -
Huiping Si,
Chunyuan Zhang,
Lin Kang,
Y. Wu,
Junhui Wu
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2087/1/012047
Subject(s) - seeding , metering mode , drum , seeder , suction , rotation (mathematics) , rotational speed , mechanics , environmental science , simulation , mathematics , materials science , acoustics , mechanical engineering , computer science , engineering , physics , thermodynamics , geometry
The seed-metering device is the key component of a precision seeder. The methods to improve the seed suction and dropping efficiency of air suction drum precision seed metering device were discussed Establishing the force and equation of motion for sucking, carrying and dropping stages, the effect of the seeding parameters on the effect of sucking and seeding is analyzed. Then, the single factor and orthogonal test are carried out on the sucking pressure, the carrying pressure, the rotation rate and the dropping pressure as the experimental factors for the optimization analysis. And the optimum experimental parameters and the predicted values of each test index are obtained. That is, when the seeding pressure of -2.87kPa, the seeding pressure of -1.91kPa, the drum rotation rate of 18.72 r min -1 and the dropping pressure of 1.74kPa, the best effect that the single rate is 93.8%.