Sanitary mixing assembly for vessels and tanks

Abstract

The present disclosure provides component parts for a mixing assembly adapted to be used with clean in place techniques. The component parts may include an impeller assembly, an adjustable hub assembly, and a steady bearing assembly. The hub assembly may include a bushing adapted to receive a shaft, and a housing with a first portion adapted to sealing engage a second portion, each portion having an external surface and an internal surface, the external surfaces being tapered at opposing ends and the internal surfaces being adapted to enclose the bushing.

1 . A hub assembly comprising: 
 a bushing adapted to receive a shaft; and    a housing including a first portion and a second portion, the first portion being adapted to sealingly engage the second portion, the first and second portions each having an external surface and an internal surface, the external surfaces being generally tapered at opposing ends, the internal surfaces being adapted to enclose the bushing.    
   
   
       2 . The hub assembly of  claim 9  further comprising a static seal adapted to create a water-tight connection between the first and second regions.  
   
   
       3 . The hub assembly of  claim 10  wherein the static seal is an o-ring.  
   
   
       4 . The hub assembly of  claim 9  further comprising at least one static seal adapted to create a water-tight connection between the housing and the shaft.  
   
   
       5 . The hub assembly of  claim 9  further comprising a plurality of impeller blades extending radially from the housing.  
   
   
       6 . The hub assembly of claim  13  wherein each of the impeller blades has a top surface and a bottom surface and a generally curved leading edge adapted to direct a liquid initially aimed at the top surface towards the bottom surface.  
   
   
       7 . The hub assembly of claim  13  wherein each of the impeller blades has a trailing edge having an outer portion and an inner portion, the outer portion being generally tapered outwards and the inner portion being generally tapered inwards, thereby forming a central apex corresponding to a widest point of the blade.  
   
   
       8 . The hub assembly of claim  15  wherein the widest point of the blade has a curvature that is roughly s-shaped.  
   
   
       9 . The hub assembly of claim  16  wherein the blade has a generally L-shaped curvature along a distal edge of the blade.  
   
   
       10 . The hub assembly of claim  16  wherein an attachment edge of the blade is attached to the central hub with a near vertical pitch.