Sower automatic powder feeding & conveying 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.