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Screening filter to protect equipment

Stone Trap Systems

The Stone Trap system is an ideal tool for the removal of damaging debris that can be found in the water is used to transport screenings. This debris can cause premature wear of the screw mechanism used in screenings compaction and dewatering.

Stones and rocks entering the compaction equipment reduce equipment life and can cause failure. The Stone Trap system is part of the recommended screen package for Brackett Green® center flow and drum screens.

The Stone Trap system is a simple piece of equipment that can result in much longer life expectancy and significantly reduced maintenance on expensive screenings compaction equipment. The protection of downstream equipment is the main benefit of the Stone Trap. However, the system has several other additional benefits, including:

  • System automation that does not require manpower to empty hoppers and similar equipment
  • Collected rocks and gravel are water free
  • Demonstrated return on investment

The Stone Trap system is designed to collect all heavy grit and gravel. The system’s hopper is flange mounted at the bottom of the screenings trough prior to the screenings handling system. The lighter screenings are carried over the hopper and the heavy stones and grit fall into the hopper for processing.

The hopper features an angled 6 in (15 cm) diameter shaftless screw which is initiated by a timer. The screw rotates at 12 rpm, lifting the gravel and small stones to the discharge point, where they then fall into a collection bin in a relatively dry state.