Sower automatic powder feeding system is an automatic system that performs real-time monitoring and management of the industrial process where granular and powder materials are distributed and measured according to the selected formula. ? The system comprises such units as discharging, milling, dust treatment, screening and conveying, etc. and is mainly composed of unpacking & discharging device, dust treatment/particle size treatment device, feeding tank, electric rotary valve, conveying device and other components. Advantages: · It achieves enclosed conveying of powder material, preventing the material from contamination; · It achieves automatic dust-free operation and fully enclosed manufacturing process; · It can help solve such problems as dusty and hostile environment arising in the process of powder discharging and conveying, etc. · It can meet different conveying speed and precision requirements.