公开(公告)号：EP0508680A1

公开(公告)日：1992-10-14

申请号：EP92302888.0

申请日：1992-04-02

申请人： Coudriet, Lawrence A. ,  Zugates, Thomas B.

发明人： Coudriet, Lawrence A. ,  Zugates, Thomas B.

IPC分类号： B01D21/24 ,  B01D21/20

CPC分类号： B01D21/18 ,  B01D21/245 ,  B01D21/2477 ,  B01D21/302 ,  B01D21/34

摘要： An upper carriage floats on the surface of a settling pond or tank of liquid containing sedimentation settled out to form a bed of sludge in the bottom of the tank. A scraper assembly is suspended from the upper carriage by flexible cables or chains (70) to a preselected depth in the tank. Scraper blades (54) supported by the scraper assembly extend downwardly into contact with the sludge bed. The carriage is propelled on a looped cable across the surface of the tank and applies a tractive force through the suspension cables to the scraper assembly. As the submerged scraper assembly advances, the scraper blades apply a shear force to dislodge the sludge from the bed and direct the sludge to a pump (46) carried on the submerged scraper assembly. The dislodged sludge is pumped through a hose from the tank. In response to an excessive shear load applied by the sludge bed resisting forward movement of the scraper blades tending to force the leading edge of the assembly to move downwardly, the length of the leading cables is shortened to raise the leading edge to a position to permit continued shearing action of the scraper blades.

摘要翻译： 上部托架浮在沉淀池的表面上或沉积的液体罐中，沉淀出来，形成罐底部的污泥床。 刮刀组件通过柔性电缆或链条（70）从上托架悬挂到罐中的预选深度。 由刮刀组件支撑的刮刀（54）向下延伸以与污泥床接触。 托架通过环形电缆在水箱表面上推进，并通过悬挂电缆将牵引力施加到刮板组件上。 当浸没式刮刀组件前进时，刮刀施加剪切力以将污泥从床上移走并将污泥引导到承载在浸没式刮刀组件上的泵（46）。 移出的污泥通过软管从罐中泵送。 响应于由污泥床施加的过大的剪切载荷抵抗刮刀的向前运动，倾向于迫使组件的前缘向下移动，导线的长度被缩短以将前缘升高到允许的位置 刮刀继续剪切动作。