pneumatic vacuum feeder is the use of compressed air through the vacuum generator to produce high vacuum conveying materials, regardless of the mechanical vacuum pump, with simple structure, small size, maintenance-free, low noise, easy control, eliminate material static electricity, in line with GMP requirements and other advantages. The high vacuum generated by the vacuum generator eliminates the layering phenomenon in the process of material transportation and ensures the uniform mixing of material ingredients. It is the first choice for mechanical automatic feeding equipment such as tablet press, capsule crusher, packaging machine, dry granulator, crusher, vibrating screen, etc.