HYDRAULIC CLASSIFIER Russian patent published in 2017 - IPC B03B5/02 B03B5/62 

FIELD: machine engineering.

SUBSTANCE: hydraulic classifier comprises a casing, a screening device set along the casing, branch pipes for water supply and fine fraction removal set at the casing corners being opposite to each other as per diagonal in its longitudinal section, branch pipes for suspension supply and removal set at the other casing corners being opposite to each other as per diagonal in its longitudinal section, a vibrator, the screening device consists of sieves coupled pairwise along the perimeter by a shell. Dryer device is made of united in pairs around the perimeter of the sidewall sieve. The branch pipes for suspension supply and removal are communicated with the inner space of evey pair of sieves. The vibrator is coupled with the screening device. Flexible pipelines are connected to the branch pipe for suspension supply, divergent nozzles with curvilinear spiral-like guides at their inner surface are installed on the pipelines in tiers within the half of the suspension chamber height and ar located in the inner space of every pair of sieves interconnected by resilient plates. Side end faces of the suspension chambers are enclosed by mesh. The vibrator is equipped with a drive with adjustable rotation speed, and speed controller is associated with pressure regulator, coupled with pressure sensor, positioned in the water-supply tube. The pressure regulator comprises interconnected comparators and setting units, electronic and magnetic amplifiers and a nonlinear connection unit. The speed controller is made as a unit of powder electromagnetic clutches. Curved helical guides located on the inner surface of the expanding nozzle, covered on the outside of the cavity glassiness nano-like film of tantalum oxide.

EFFECT: increase in the productivity and effectiveness of the classification.

5 dwg