Simulation of the gas-solid flow in an inside-filling air-blowing maize precision seed-
metering device was performed by means of a coupling approach of the discrete element …

This work aimed to improve the seeding quality of maize and to investigate the influence of
the seed drop tube on the seeding quality. The airflow-assisted seed-dropping device (the …

Highlights•Air-suction seed-metering device with auxiliary seed-supporting mechanism.•
Interrelationship between seed flow characteristics and airflow.•DEM-CFD can simulate the …

A numerical study of gas-solid flow in seed feeding device of air-assisted centralized
metering system was carried out by means of Discrete Element Method (DEM) and …

In view of the problems of a poor seed-filling state and poor seed-cleaning effect of a
precision metering device under high-speed working conditions, an inside-filling air-assisted …

This study proposed a pneumatic type of high-speed maize precision seed metering device
and analysed the motion mechanism of maize seeds during the filling, cleaning, and seed …

The air-suction precision seed-metering device is prone to the instability of the seed
adsorption state, which arises from blockage of the suction hole and leads to uneven …

Pneumatic metering device has been increasingly widespread for the advantages of high
planting quality, low seed-injuring rate, strong adaptability to seeds and higher planting …

Highlights•The distribution characteristics of seeds was investigated by CFD-DEM coupled
method.•Seed motion and collision, seed residence time, and airflow field were studied.•The …

The distribution head and its impact on seed distribution uniformity were the core parts of an
air-assisted centralized seed-metering device. Numerical simulation of seed motion in the …