DESIGN AND EXPERIMENT OF AN AIR-SUCTION SEED METERING DEVICE FOR WATERMELON SEEDS BASED ON AIR-BLOWING DISTURBANCE

In order to meet the demand for precision sowing of watermelon seeds, this article proposes a new type of air-blowing disturbance seed supply air-suction seed metering device, introduces the structure and principle of the seeder, analyzes the posture characteristics of the seeds during filling, and verifies the optimal angle of air-blowing disturbance seeds was 30°. The effects of airflow velocity and airflow angle on the boiling height and number of watermelon seeds were determined through bench tests. The test results showed that the qualified rate, missing rate and reseeding rate were 85.32%, 9.35% and 5.39% under the condition of 12km/h seeding speed, which basically met the requirements of precision seeding. © 2024, Politechnica University of Bucharest. All rights reserved.