| 摘要 |
<p>PURPOSE: To mix effectively a fibrous floating matter with air bubbles by introducing air and the fibrous floating matter into a flow channel wherein a cross sectional area repeats narrowing and widening in the direction from a suction end toward a discharge end. CONSTITUTION: In the injector in a flotation device, two flowing flat plates 3, 4 which have convex parts 8, 9 comprising a bar inclined at an angle (b) of 10-90 deg. toward the direction of flow from a side wall 15 between a suction end E and a waste end A, are arranged oppositely each other. The inclined angle of the convex parts 8, 9 is gradually increased from the suction end E toward the discharge end A in a range of 20-90 deg. to change the cross section toward the flow direction, and at the same time circular cylinders 21, 22 as air supplying paths are arranged at back side of an isolating wall 20 in a supplying path 23 of the fibrous floating matter to construct an injector. The fibrous matter is introduced with air into the mixing paths wherein the cross sectional area repeats narrowing and widening to the direction of the injector, and mixed effectively with generated bubbles.</p> |
