CASE STUDY | Rock Trap

Wyma Solutions is one of the world’s leading manufacturers of post-harvest vegetable and fruit handling equipment. Christchurch-based, they have production facilities on two continents and machinery operating in more than 50 countries.

THE CHALLENGE

Wyma were asked by a customer in Western Australia to provide a machine capable of separating out potatoes from rocks.

They required it to operate at a raw material rate of 50-tonne per hour and dispose of up to 30-tonnes of rocks per hour.

The machine would be fed by the customer’s existing four tonne bin-tipper.

THE SOLUTION

A Caliber engineer worked from a concept supplied by Wyma, where the potatoes were floated out one direction, and the rocks disposed of by a conveyor going the other direction.

The engineer designed the required machine, calculating all of the requirements and delivering drawings for manufacture.

The rock trap is currently in use on-site, reliably sorting 12 hours a day during harvest.