| 摘要 |
A substantially cylindrical filter chamber having a lower horizontal bottom plate, a side wall and an upper horizontal bottom plate, is divided into two compartments having a bottom plate and a side wall by a planar horizontal support fabric. In each compartment, a movable wall is associated with the bottom plate, the movable wall being adapted to reduce the volume of the respective compartment to approximately zero. The support fabric serves as a carrier for a precoat filter layer and is clamped along a ring-shaped, preferably reinforced, rim region between the adjacent faces of said side walls. Further, each movable wall is also clamped along a ring-shaped rim region between the side wall and the adjacent bottom plate of the compartment. A central channel delimited by internal side walls extends in the center of the filter chamber, an internal ring-shaped rim region of the support fabric surrounding the central opening being clamped between the adjacent faces of the internal side walls, and a ring-shaped internal rim region of the movable walls, each being clamped between the internal side wall and the bottom plate of the respective compartment, the bottom plate equally provided with a central opening. |
