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 …

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 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 …

Highlights•Novel high-speed precision seed-metering device for maize was
designed.•Increased seed filling force and reduced non-essential air loss were …

Combined with the good filling performance of the inside-filling seed metering device, in this
study, one kind of combined nozzles was designed using the principle of gas cleaning of air …

In disturbance-assisted seed filling vacuum seed-metering devices, the suction hole causes
difficulty in quickly and stably sucking seeds when used for high-speed seeding and the …

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 …

Aiming at the problems of airtightness reduction, vacuum pressure demand increase and
planting precision decline, which are caused by the friction between seed plate and sealing …

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