Automatic powder granule Pnuematic Vacuum Feeder conveyor with Movable Hopper

   The pneumatic vacuum feeder is a vacuum conveyor that uses a pneumatic vacuum pump as a vacuum source.

   The vacuum feeder can be used to feed materials directly from the container into a mixer, reactor, hopper, tablet press, packaging machine, vibrating screen, granulator, wet granulator, dry granulator and crushing machine.  The vacuum feeder reduces the labor intensity of workers, eliminates dust pollution, and ensures that production meets GMP requirements,also can reduce the space.

   vacuum feeder working principle.

   When press "on/off" button , compressed air enters the vacuum pump, and the discharge door of the hopper is closed under the push of the cylinder, and a vacuum is generated in the hopper. The vacuum feeder forms an airflow under vacuum. Under the action of this airflow, the material will be conveyed to the vacuum hopper through the hose. After a certain period of time (feeding time, adjustable), the compressed air is turned off, the pneumatic vacuum pump cannot generate vacuum, and the discharge door of the hopper is opened by the cylinder. The vacuum of the vacuum feeder disappears, and the material go into the receiving equipment (such as tablet press, packaging machine, etc.) from the discharge door. 

    At the same time, the compressed air stored in the air bag back-blows the filter, and the filter is cleaned automatically; after a certain period of time (discharge time, adjustable), the compressed air is restarted, the pneumatic vacuum pump generates vacuum, the discharge door is closed, and the vacuum feeder is fed again, and the material is continuously fed into the receiving equipment.

    some vacuum feeders has material level snesor, When the material level is higher than a certain position, the vacuum feeder stops feeding; when the material level is lower than a certain position, the vacuum feeder starts to complete feeding automatically.

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