Patent ID: 7699984
Filing Date: 2010-04-20
Classification: B01D

Abstract:
1. A hydrodynamic treatment device for separating material from a liquid flow, the device comprising a vessel having: a cylindrical outer wall; an inner partition which divides the interior of the vessel into an outer separation region and an annular inner separation region, the outer and inner separation regions communicating with each other across the inner partition; an inlet which is directed into one of the inner and outer regions to promote a rotating flow in the vessel; a liquid outlet which extends from the other of the inner and outer regions; and a frustoconical base which converges downwardly to an outlet opening for separated material, which said outlet opening of the frustoconical base communicates with the outer separation region beneath the inner partition; a lower end wall closing a lower annular end of the annular inner separation region; and a central cylindrical partition defining an inner periphery of the inner separation region, the interior of which said central cylindrical partition has an open lower end through which access is directly provided to the outlet opening of the frustoconical base.