DEVICE FOR AUTOMATIC CRYSTAL SORTING Russian patent published in 2017 - IPC B07C5/16 

FIELD: measuring equipment.

SUBSTANCE: device for automatic crystal sorting by weight can be used for sorting crystalline mineral raw materials, in particular diamonds, by weight groups and comprises of a crystal loading unit, a unit of crystal supply to a control position, a crystal mass determination unit, a sorted crystal distribution unit and a control unit, a twin crystal reject unit, a dual-feed detection unit. The crystal loading unit is made in the form of a removable hollow drum with a protrusion on its inner surface, forming a double helix, and is rotatably mounted in the roller system. The unit for supplying the crystals to the control position is made in the form of two horizontal screw conveyors arranged in series and connected to the control unit. The conveyors are arranged and controlled so as to maximize the stretching of the crystals along the screws. The dual-feed detection unit is in the form of an inclined labyrinth of a step type, the twin crystal rejection unit is made in the form of a chamber rotating in a vertical plane and connected with a labyrinth in the upper part, with a twin crystal bin and the sorted crystal distribution unit in the lower part. The sorted crystal distribution unit is made in the form of an inclined branch pipe, rotating around a vertical axis and mounted over a horizontal plate, equipped with an optical sensor, having holes, connected with the sorted diamond bins through transport channels in the form of inclined tubes.

EFFECT: device makes it possible to increase the accuracy of the separation of crystals into weight categories, also due to eliminating the simultaneous weighing of crystals during their simultaneous fall.

3 dwg