Analysis and Experimental of Seeding Process of Pneumatic Split Seeder for Cotton

In order to study the working mechanism and sowing effect of seed delivery pipes their associated cavity seeders, factors affecting test were first derived through pressure loss theory force analysis cotton particles in gas-solid coupling field. Secondly, Ansys fluent was used simulate flow field pipe joints on overall uniformity air distribution determine optimal structure joints. Then, EDEM simulated for its seeders absence positive analyze transport pattern each seed. Finally, CFD-DEM simulation experiments conducted center two rows connected trajectory seeds under different rotational speeds pressures deeply causes Multiple seeding Miss-seeding. At same time, performance evaluated by values with single rate multiple as evaluation indexes compared bench test. The results show that simulation, when speed is 20~40 rev/min tube passed into 50~150 Pa airflow, not less than 83.06%, missed more 9.23%. test, 80.64%, 9.86% pressure, close consistent, which verified feasibility simulation.