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Volumetric & Gravimetric Feeding Systems

Supplier: Nu-Con

Consistently High Accuracy Feeding Systems.

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Nu-Con provides a wide range of Volumetric and Gravimetric Powder Feeding Systems to guarantee high accuracy for critical applications such as:

  • Dosing Systems
  • Minor / Major Ingredient Preparation Systems
  • Pre-Mix Systems
  • Recipe Handling Systems
  • Blending Systems
  • Packing Systems

Volumetric Feeding Systems
 
Volumetric feeding systems use an auger or screw conveyor running at a constant speed to discharge powder from a storage hopper at a consistent rate (volume per unit time - eg litres/min.)

Frequently the hopper includes devices to condition the bulk material to ensure an even bulk density by using vibration, agitation, massaging, or other means to eliminate air pockets and maintain flow.

A wide variety of screw designs are used by Nu-Con to suit each particular application;

  • Single Screw                  Twin Screw
  • Half Pitch Flighting          Double Pitch Flighting
  • Open Flight Helixes         Side/Top Discharge Nozzles
  • Polyethylene Helixes       Variable Pitch Helix

Additional Options for mixing, stirring, spreading, and pulse elimination, and for handling difficult materials with special properties eg sticky, stringy, lumpy, aerated, cohesive, abrasive, dusty or fragile.
   
Specialised systems are also possible which do not use screws, such as vibratory feeders, rotary valve feeders, belt feeders and others.

For a Weighing System which is integrated into your overall plant design and control system contact Nu-Con for an assessment of your requirements.

Gravimetric Feeding Systems
 
Gravimetric feeding systems generally use a volumetric feeder associated with a weighing system to control the discharge of powder from a storage hopper at a constant weight per unit time - eg kg/min.

The weight signal is used via a feedback control system to constantly monitor the actual feed rate and compensate for variations in bulk density, porosity etc.

Weighing systems may include platform scales, loadcells, weigh hoppers and other devices to provide optimum performance as required by design requirements.

System design may be on Loss-in-Weight or Gain-in-Weight principles depending on overall process requirements.

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