Patent ID: 8376146

Claim:
An apparatus for classifying or concentrating a liquid laden with fibers or solids by means of screening or filtration by using a cylindrical fine screen having hole-shaped or slot-shaped openings, said screen being fixedly clamped in a housing in a vertical position, in the interior of which an axially cylindrical vibrator is arranged, in a manner forming an annular gap, in which a vibration motor is disposed, which performs circular horizontal oscillations, and in which the liquid to be treated is introduced at one side of the annular gap and the classified or concentrated liquid is removed from the opposite side and the cleaned liquid or the liquid provided with fine particles is discharged between the screen and the housing wall, characterized in that the vibration unit is connected to the housing such that a vertical mobility is enabled in addition to the horizontal mobility, wherein the horizontal and vertical mobility of the vibration unit is assumed by at least three rubber buffers.