| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a vertical type underwater stirring device in a water treatment tank in which a flow-straightening plate can be vertically position-adjusted from outside the tank, an appropriate flow-straightening effect is obtained by a relatively small flow-straightening plate, effective suction removal of scum adapted for water level in the tank is further carried out, it is not required to separately equip a dousing removal facility or the like and only the flow-straightening plate can be rapidly and easily pulled up from the inside the tank in the case where impurities are twisted around the flow-straightening plate. <P>SOLUTION: The vertical type underwater stirring device in a water treatment tank is constituted such that a draft tube 5 is supported in the water treatment tank 1 by a support in the tank or a vertical rod 4 hanging down from the upper part of the water treatment tank 1, a propeller 9 attached to a lower end of a motor shaft is opened to an upper end opening of the draft tube 5 and the flow-straightening plate 12 is liftably supported by the vertical rod 4 above it. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
