GATE WITH CHUTE VARIABLE PROFILE ("HERRINGBONE" GATE) Russian patent published in 2016 - IPC B03B5/70 

FIELD: mining.

SUBSTANCE: invention relates to minerals dressing, in particular to minerals processing equipment, and can be used for dressing of ores and sands containing fine gold, at concentrating mills, dredges and trammels. Gate with variable chute profile, "Herringbone" gate includes loading unit, trapezoidal chute with sides and flat bottom, consisting of two planes located one above another, one of bottom planes is rigidly fixed with chute sides, and unloading device with unloading holes throughout bottom width. Gate is equipped with at least one additional chute, each of which is made expanding in direction of pulp travel and by its end part is connected with following chute through additional insert, which is continuation of bottom lower plane from wide to narrow part. Under insert receiving-unloading devices are located. Bottoms lower planes are rigidly connected with gate boards and arranged with gap relative to bottoms upper planes, which made according bottoms lower surfaces form in form of grid consisting of two parts, hinged at chute ends, provided with guide plates installed on grids surface. Gap value exceeds width of transverse slotted holes of upper planes - chutes bottom grids. Receiving-unloading devices are equipped with locking assemblies.

EFFECT: improved valuable heavy particles segregation conditions due to pulp flow hydrodynamic mode periodic changes, flowing along gate.

1 cl, 5 dwg