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Natural frequency feeder / screen - Conveying, Screening, Dewatering

The AViTEQ-Natural frequency trough feeder/screen are an ideal solution for the food industry when there is a need for conveying, screening and dewatering of light or sensitive bulk solids. The Natural frequency feeders follow the principle of the dual mass vibration system. Through the introduction of direct vibrations in the counterweight, these vibrations are directed via leaf springs. Resulting in a high working stroke of the feeder trough. They are characterized by their compact design and low-noise operation. In comparison to typical vibration products, where the vibration is introduced directly into the trough, much smaller drives can be used for the same task. In conjunction with a magnetic drive, natural frequency feeders are the ideal products for dosing of bulk solids. The design of the trough and screen are as varied as the customers application.

Advantages & benefits  

  • Compact, flat design
  • Low noise operation
  • Product-friendly promotion
  • Energy efficient system 


  • Trough made of 304 (V2A) Stainless Steel or 316 (V4A) Stainless Steel with different surface treatments (ViwateQ®, electrochemically polished, ground)
  • Different linings: textured sheets, FDA-grade plastics, etc.
  • Different screen inserts (with quick clamping system, ball knocking device, etc.)
  • Custom inlets and outlets with seals
  • Drive (Electromagnetic for dosing, electromechanical for powerful conveying)
  • Elastic support elements and spring elements
  • Optional: covers


The dimensioning depends on:  

  • Product to transport
  • Task (Dewatering, Classifying, Protection Sieves, Conveying)
  • Throughput
  • Required geometry
  • Possible installation

Key figures

  • Length:  up to 5,000 mm
  • Width: up to 2,000 mm
  • Throughputs: up to  300 t/h
  • Drives: magnetic vibrator or unbalanced motor    

Possible drive types

Vibration motor, Vibratory motor, electro-mechanical drive

Unbalance motors

Magnetvibrator, elektromagnetischer Antrieb, magnetische Rüttler

Magnetic vibrator