Patent ID: 6126150
Filing Date: 2000-10-03
Classification: B01F,C02F,Y02W

Abstract:
An apparatus to be submerged in a liquid for introducing and dispersing a fluid in said liquid, comprising;(a) a lower body;(b) an upper body co-axially affixed to said lower body;(c) said lower and upper bodies being generally circular in horizontal cross-section and being rotatable about a vertical axis;(d) a plurality of blades disposed between said upper and lower bodies, said blades being spaced apart from each other and having a body portion positioned between said upper and lower bodies of said apparatus and having a forward edge and a rearward edge, with respect to the intended direction of rotation of said apparatus, an outer edge, and a portion projecting radially outwardly beyond the circumference of at least said lower body and rearwardly with respect to the intended direction of rotation of said aerator, said projecting portion being contiguous with said rearward edge of said blade body portion;(e) said upper body having an axial bore to engage with a rotatable shaft with a hollow passage therein which has a fluid intake at an upper end thereof, for conducting fluid into said apparatus, said axial bore being interconnected with fluid exit ports which are between said blades and immediately rearward of said blades, each said exit port being spaced from a radially adjacent exit port by said blade body portion of a blade;(f) whereby when said apparatus is submerged in said liquid and axially rotated by rotation of said rotatable shaft, said rotation of said apparatus causes fluid to be drawn through said shaft into said apparatus and ejected into said liquid through said fluid exit ports, without intake of said liquid into said fluid exit ports.