4BQD-40C 型喷播机喷播落种均匀性研究

Abstract

The working parameters of the pneumatic sprayer, such as the sprayer's attitude, working airflow, and spraying amount, have an impact on the evenness of seed distribution during the process of vegetation restoration on degraded grasslands . This article focuses on the 4BQD-40C pneumatic sprayer and analyzes the impact of the sprayer's forward speed, the airflow velocity at the sprayer's inlet, and the frequency of the sprayer's swinging nozzle on the spraying quality. The conclusion shows that: 1) the equation of the seed distribution trajectory of the sprayer was obtained, laying the foundation for subsequent research; 2) the swinging frequency of the nozzle is the key factor affecting the spraying quality of the sprayer, and the optimal swinging frequency of the nozzle corresponding to different forward speeds of the sprayer was obtained based on the established trajectory equation; 3) when the sprayer performs spraying operations with the optimized forward speed and swinging frequency, the trajectory of the sprayer's seed distribution was analyzed. It was found that when the nozzle swings at each optimal frequency, the trajectory of the seed distribution is the same, and the sum of the re-sprayed and missed areas in the seed distribution area is equal.