| 摘要 |
1408155 Liquid aeration plant J R KAELIN 22 Nov 1972 [22 Nov 1971] 53860/72 Heading B1C Liquid aeration plant comprises a tank 3 containing in its lower region a circulator 2 which comprises rotary blades 4 which cooperate with stationary blades 5 secured to the tank, the blades having cutting edges which effect a cutting or sheering action on matter contained in the liquid.' The action of the circulator is to cause a flow movement in the liquid contained in the tank which is shown by the arrows in Fig. 1 i.e. downward coaxially of the tank and upwards around the inner periphery of the tank. An inlet conduit for the supply of oxygen or oxygen mixture is provided and which discharges into the suction side of the circulator upstream of the circulator. The cutting edges of the blades are serrated 9 or formed in a zig-zag manner 10 with one portion of the blade being at a different angle to a succeeding portion which provides a better cutting action in operation in which there occurs successive changes in the cutting angle. The tank may be cylindrical, cuboid or spherical in shape. |
