| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a compact and low cost screw type filtration dehydrator that is almost trouble-free, has excellent dehydration efficiency, and is excellent in maintainability. <P>SOLUTION: The screw type filtration dehydrator is constructed in the following manner. A screw conveyor 5 is fitted into the center hole 4 of a cylindrical filter 1 equipped with a front end opening as a sludge feeding port 3. A pressure regulator valve 8 that faces an annular valve seat 6 fixed onto the terminal end opening of the cylindrical filter 1, is adjustably mounted on a screw shaft 5S. A gap between the opposing faces of the pressure regulator valve 8 and the annular valve seat 6 is provided as a discharge port 12 for discharging dehydrated cake. A plurality of movable plates 1KA are eccentrically rotated as a first driving mechanism of driving the screw conveyor 5 in such a manner that the inner circumferences of the movable plates 1KA disposed in the front half FF of the cylindrical filter 1 contiguously slide on the outer circumference of the screw conveyor 5. The inner circumferences of the movable plates 1KA disposed in the rear half RF of the cylindrical filter 1 and the outer circumference of the screw conveyor 5 are contactlessly disposed. A second driving mechanism that eccentrically rotates the movable plates 1KA by an eccentric shaft 11, and the first driving mechanism are each separately provided. <P>COPYRIGHT: (C)2010,JPO&INPIT |
