Patent ID: 9687760
Date: 2017-06-27
CPC Classifications: B01D,B04C

Claim:
1. A system for separating a heavy fraction from a liquid, comprising: an upper section, an inlet in fluid connection with the upper section to introduce the liquid into the upper section, an impeller within the upper section to induce rotational flow and fluid pressure to the liquid within the upper section, a flow restrictor positioned below the impeller, the flow restrictor having a diameter less than an inner diameter of a wall of a housing of a lower section so that a gap is formed between the flow restrictor and the housing of the lower section, wherein there are no rotating elements below the flow restrictor, a conduit comprising an inlet positioned radially inward from an interior surface of the wall of the housing of the lower section and axially below the flow restrictor, the lower section being generally cylindrical from a top of the gap to a baffle positioned axially below the flow restrictor, the baffle defining a settling section for the heavy fraction, the lower section further comprising a slurry outlet in operative communication with the settling section via which a slurry with an increased concentration of the heavy fraction exits the lower section and a deflector positioned within the lower section axially above the baffle and below the flow restrictor, the deflector having a diameter less than the inner diameter of the wall of the housing of the lower section, the conduit extending through an opening in the deflector and through the wall of the housing of the lower section, the conduit further comprising an outlet outside of the lower section via which the liquid exits the lower section.