Vacuum feeder is a vacuum feeding pneumatic vacuum pump as well as vacuum source.

With this vacuum feeder, materials could be fed directly from container into mixer, reactor, hopper, sheet press, packing machine, vibrating griddle, pellet trimming machine, hydro-sects pellet, dry-state pellet and disintegrators.

For the vacuum feeder with material level control, automatic feeding is realized with the hopper of the material-receiving machine through material level control.

When the material level is higher than a position in the hopper of the material level, vacuum feeder stops feeding, but when the material level is lower than a position in the hopper, vacuum feeding continues automatically. And feeding on the material-receiving machine is thus completed.