| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an aeration stirring device including an impeller and a guide plate, in which loss due to the collision of a jet flow with a side wall can be reduced.SOLUTION: An aeration stirring device 1 includes: an impeller 5 which is installed in a vicinity of water surface and a side wall 11 and rotates around the axis line almost in a vertical direction; a guide plate 4 which is arranged on the lateral side of the impeller 5 and separately from the impeller 5 and whose downstream side of the impeller 5 is opened, and which covers at least the upstream side of the impeller 5 from the lateral side, and thereby guides a jet flow to the upstream side due to the rotation of the impeller 5 to the downstream side of the impeller 5; and first guide part 20a which is provided on the side of the side wall 11 on the downstream side of the impeller 5 and guides a part of a flow directing to the side of the side wall 11, out of the jet flow guided to the downstream side of the impeller 5, along the side of the side wall 11, so that the occurrence of a local vortex or turbulence on collision with the side wall 11 is suppressed.</p> |
