FIELD: machine engineering.
SUBSTANCE: device comprises a body, a drive with a shaft, a cover, an opened working tank with a bottom mounted on the shaft and made rotatable, a cap with a concave working surface, an armour sheet fixed therein and a protective ring secured on its end. Three channels are made in the cap for feeding the material to be treated, feeding compressed gas and discharging the dust-gas mixture. In the working tank, there is a concave bottom with an end face with the formation of a cavity between it and the bottom of the working tank. In the cover, there is an axis mounted with the possibility of rotation, in which at least three channels are made. The cap is fixed on the axis and positioned inside the working tank. The cap end and the bottom end form an annular slit gap.
EFFECT: reduced wear of centrifugal device working surfaces.
23 cl, 17 dwg
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