| 摘要 |
<p>537,469. Agitating liquids in flocculating chambers. DORR CO., Inc. Oct. 23, 1939, No. 28484. Convention date, Oct. 21, 1938. [Class 86] [Also in Group I] Agitating blades in a flocculating chamber are arranged with the blade faces at an angle to the direction in which they move and co-operate with stationary blades to deflect the liquid in places at right angles to the normal flow of the liquid through the chamber. In the combined flocculation and settling apparatus shown the liquid is supplied to an inner flocculation chamber 41 through a vertical pipe 7 and apertures 8 and agitated therein by vertical blades 60 on a rotary support. The blades are arranged at an angle to their direction of motion so that they direct the liquid inwardly. The blades 60 pass between stationary vertical baffles 52 which are also arranged to direct the liquid inwards. The chamber 41 and the baffles 52 are supported from a truss 14 extending across the top of the settling tank 1. The rotary support for the blades 60 comprises radial arms, 72, 73, attached to a drum 66 supported by a bearing 68 and rotated by a motor 69. The drum 66 has apertures 22 corresponding to the apertures 8 for the entry of the liquid. The liquid passes from the flocculating chamber to the settling-tank through an annular passage between the outer edge of a plate 46 attached to the pipe 7 and the inner edge of an inclined annular plate 45 which forms a bottom for the chamber 41. Sludge settling in the tank is directed to a sump 12 by scoopers 21 attached to the pipe 7 which is supported by a shaft 27 rotated by mechanism 28.</p> |
