ASABE Technical Library - Abstract

Abstract. Due to high capacity of tilling, generally two to three cotton seeds are required for each hole in order to avoid a planter-like high empty hole rate. Meanwhile, the different variety and irregular shapes of the seeds results in excessive seeds in each hole which makes it quite difficult to meet requirements for current needs in the field. In order to realize precise farming, a unique precise pneumatic metering device was designed with a group sucking plate in seed metering device, by which two to three seeds can be sucked and dropped at the same time. The key components of seed metering device were designed and optimized and the three-dimensional model of cottonseeds and seeding plate were established by analyzing the principle of pneumatic precision planter the appearance size statistics of cottonseeds and the adsorption principle analysis of seeding plate. The discrete element models of cottonseeds and metering device were established, and the simulation of two different kinds of seeding plates with stirring device or not using the discrete element analysis software EDEM which will complete the design theory of pneumatic cottonseeds precision seed-metering device.