Thickener/clarifier feedwell having volute peripheries,申请号AU20110315958-传众专利搜索

Thickener/clarifier feedwell having volute peripheries

申请公布号：AU2011315958(B2)

申请号：AU20110315958

申请日期：2011.10.14

申请公布日期：2013.07.11

申请人：

FLSMIDTH A/S

发明人：ECHEVERRI, LUIS FERNANDO

分类号：B01D21/24;B01D21/26

主分类号：B01D21/24

摘要：A feedwell for a thickener/clarifier includes a feedwell body (40), a feedwell inlet (41), a sidewall (42), and a discharge opening (48). At least one infeed conduit (21) is connected at an upstream end of the feedwell inlet (41). The sidewall (42) has a non-cylindrical curved peripheral surface defining a radially-outermost fluid boundary surface for an influent stream (60). The non-cylindrical curved peripheral surface may include portions of a volute surface, coil surface, helical surface, compound curve surface, spline curve surface, or spiral surface. Feedwells according to the invention provide a uniform settling tank feeding flux around exiting portions of the feedwell, control velocity gradients and shear rates, protect flocculated aggregates, normalize sedimentation conditions in the settling tank, and prevent large local accelerations and flow non-uniformities.