Aerator with float chamber and turnable inlet
First Claim
1. An aerator for use in a liquid medium comprising a liquid inlet to a venturi chamber, pump means for drawing liquid through the venturi chamber, an air inlet connected to the venturi chamber, whereby air is drawn into and aerates the liquid drawn through the venturi chamber, an outlet from the venturi chamber for discharging the aerated liquid into the liquid medium and float means for supporting the aerator in the liquid medium, wherein the liquid inlet and the outlet are on substantially parallel axes, and wherein the liquid inlet is turnable between two positions, one position where the liquid inlet takes in liquid in an opposite direction to outlet flow and the other position where the liquid is drawn in and discharged in the same direction.
2 Assignments
0 Petitions
Accused Products
Abstract
Described is an aerator (10) that includes a venturi chamber (18), a pump for drawing liquid into the venturi chamber from a liquid inlet, an air inlet connected to the venturi chamber for aerating the liquid drawn through the venturi chamber, and an outlet for discharging the aerated liquid. A float chamber (26) is provided for supporting the aerator in a liquid medium, e.g. a fishing lake. Preferably, the liquid inlet and the outlet are on substantially parallel axes, wherein the liquid inlet is turnable between two positions: one position where the liquid inlet takes in liquid in an opposite direction to the outlet flow and the other position where the liquid is drawn in and discharged in the same direction. A control means responsive to sensors for determining biological oxygen demand and chemical oxygen demand is also provided for controlling the speed of the pump.
26 Citations
15 Claims
- 1. An aerator for use in a liquid medium comprising a liquid inlet to a venturi chamber, pump means for drawing liquid through the venturi chamber, an air inlet connected to the venturi chamber, whereby air is drawn into and aerates the liquid drawn through the venturi chamber, an outlet from the venturi chamber for discharging the aerated liquid into the liquid medium and float means for supporting the aerator in the liquid medium, wherein the liquid inlet and the outlet are on substantially parallel axes, and wherein the liquid inlet is turnable between two positions, one position where the liquid inlet takes in liquid in an opposite direction to outlet flow and the other position where the liquid is drawn in and discharged in the same direction.
Specification