Influența unghiului de înclinare a tubului de conducere și a vitezei aerului asupra fluxului de semințe dozate de aparatele cu cilindru canelat

Abstract

The article presents study results of the influence of seed tube inclination angle and air velocity on the seeds flow dosed by devices with fluted roller. The results were obtained at the computer-assisted experimental installation. The research goal was to establish the optimal operating values of seed tube orientation angle and the air velocity at which a better uniformity distribution of seeds along the row is assured. The object of the research is seed tube, which was installed under the inclination angles ε = 0; 15; 30° to the vertical axis of seed discharge of the movable flap. The installation working regimes were: the fluted roller speed n = 10; 20; 30; 40; 50; 60 min-1; air flow velocity Va = 0, 2, 4, 4,5, 6, 8 m/s. Analysis of the obtained results shows that the seed tube inclination angle ε = 30° at the distribution system, decreases the time coefficient of variation between seeds to 53.48%. This value is 24.35% lower than the one that is characteristic for the standard distribution system 77.83%. The factor that most influence the time coefficient of variation between seeds (41.36%) at distribution system, is the air speed 8 m/s at the roller speed 10 min-1