双浮箱滗水器的设计

The Decanter with Double Floating Tanks: A New Design

针对现有滗水器的不足,设计了具有内、外浮箱和对称堰口的无动力滗水器。其外浮箱侧壁下铰接堰盖,堰盖与集水槽壁上端之间形成堰口。滗水器漂浮所需浮力,非滗水阶段由内浮箱提供,滗水阶段由外浮箱提供。滗水堰口始终处于液面下,堰盖所受浮力的改变将驱使堰盖转动而控制堰口的开、闭。提出了外浮箱侧壁浸没深度与堰口负荷的关系式。制作了2.1m长的样机,其滗水负荷为0.037m3/(m.s),样机运行试验效果良好。

A new decanter is designed to solve some shortcomings of the current decanters. This new decanter has both inner and outer floating tanks. It has two symmetric weir gates and requires no extra dynamic to work. The bottom of the walls of the outer floating tanks hinges with the flap gates. The flap gates and the top of the collecting chute form the weir gates. When the decanter is not decanting, the inner floating tank provides the buoyance ; while the decanter is decanting, it is the outer tank that provides the buoyance. The weir gate is always below the fluid surface. The discrepancy between buoyance under the two different decanting conditions rotates the flap gate to ei- ther open or close the weir gate. In the study, the relationship between the weir gate load and the immersion extent of the outer tank wall is concluded with a formula. A sample decanter with 2. 1 meter long was manufactured and tested. Its decanting load is 0. 037 m3/ （ m s）, and it works satisfactorily.