In addition to batching hoppers GIMAT produces screw extractors or screw batchers and volumetric batchers with continuous dosing or batching. In this case the batching is done with volumetric precision.

Volumetric-feeders

Download Bag Emptying Stations Catalogues (PDF)

VOLUMETRIC AND GRAVIMETRIC FEEDERS

Volumetric feedersVolumetric Gravimetri Feeders

Volumetric Feeders fall into 3 categories:

  • Batch Feeders – by controlling time a weight batch (Kg) is dosed.
  • Rate Feeders – by controlling speed a variable speed rate (Kg/hr) is dosed.
  • Recipe Feeders – by controlling both speed and time a variety of recipes can be delivered already mixed.

The RPM of the screw feeders can be adjusted by means of:

  • Continuous mechanical variable-speed motors with manual or electrical control: Minimum flow rate equal to 1/5 of maximum flow rate.
  • Continuous hydrostatic variable-speed motors with manual or electrical control: Flow rate having maximum value of approximately 0.
  • Gearmotors with motors piloted by vector inverters and additional power ventilation, when necessary, with minimum flow rate equal to at least 1/10 of maximum flow rate.

Continuous volumetric feeders from 3 dm³/h to 40 m³/h.
(depending on the spirals/screws and reduction ratios used, from 1800 g/h to 21’000 kg/h considering a density of 0.6 kg/dm³).

Equipment for explosive atmospheres (ATEX)

Upon request the volumetric feeder can be designed and built in conformity to ATEX Directive 94/9/CE for Zone 2-22 / Zone 1-21

GIMAT VOLUMETRIC FEEDERS – click on images for details