Seed meter seed tube

作者: Jay H. Olson

DOI:

关键词: Front (oceanography)Electrical engineeringMetreTube (fluid conveyance)MechanicsMaterials scienceCurvature

摘要: A seed meter for metering individual seeds at a controlled rate into furrow in the ground over which is traveling releases hollow, elongated tube. The tube curved along length thereof direction opposite of travel to release with horizontal velocity generally equal and compensate motion that meter. This enables each reach little or no component direction, thereby minimizing lateral bounce on ground. Seed within minimized by curvature gradually increases downward inner front wall has logarithmic from vertical upper end an portion exponential lower increasing progressively reduces angles incidence impact until eventually slides exits uniform, predictable angle. minimum withn provides uniform residence time

参考文章(6)
Harry C. Deckler, Metering apparatus for a seed planter ,(1973)
R Beebe, Pneumatic seed dispenser ,(1973)
R Eugene Wallace, Joseph L Zagotta, Donald A Mccallum, Fluidic grain planting control ,(1971)
Brynley M. Barker, Robert J. Barker, Seed dispensing device ,(1977)
Steele Clarence R, Price Frank B, Seed planting apparatus ,(1959)