Vacuum feeder is a kind of vacuum conveyor which uses electric Roots blower/vibration pump as vacuum source. The vacuum feeder can directly feed materials from the container into mixer, reactor, hopper, tablet press, packaging machine, vibration screen, granulator, wet granulator, dry granulator and crusher.
ZKS-5 or above, the series vacuum feeder is pumped by Roots blower, so that the suction nozzle inlet and the whole system are in a certain negative pressure state. Powder particles are sucked into the nozzle along with the outside air, forming a material flow, reaching the hopper through the suction pipe, and separating air and material in the hopper. The separated material enters the receiving equipment. Feeding - discharging is accomplished by opening and closing the pneumatic reversing valve continuously, and the opening and closing of the pneumatic reversing valve is controlled by the control center.
The vacuum feeder is equipped with a compressed air back-blowing device. When discharging, the compressed air pulse back-blowing filter knocks down the powder adsorbed on the surface of the filter to ensure the normal operation of the material.