The circular water-filled hopper receives the product to be destoned and in combination with the rotational action of the vertical screw auger draws the water and crop gently up the tube supported by the regularly closed screw.
The rotational action raises the product allowing the water to gravitate down the side of the auger. Heavy particles with negative buoyancy remain on the bottom of the hopper. Clean product (without stones) are transported out off the upper side of the transport screw.
With the screw destoner SO products like potatoes and carrots with a diameter of max. 200 mm can be processed.
The capacity of the machine depends on the size of the product, and can be max. 5 tons/hour (11,000 lbs/hr).
• simple and effective
• feed-in with anti-splash