公开(公告)号：US4904380A

公开(公告)日：1990-02-27

申请号：US148607

申请日：1988-01-26

申请人： Ashok K. Bhanot ,  John D. Miller

发明人： Ashok K. Bhanot ,  John D. Miller

IPC分类号： B01D29/11 ,  B01D37/02

CPC分类号： B01D29/114 ,  B01D37/02 ,  B01D2201/0438

摘要： A precoat filter element for a precoat filter unit comprises a flow distributor and flow straightener. The flow distributor surrounds a filter septum and has openings through which liquid may flow. The proportion between the area of openings and the area of a wall of the flow distributor may vary along the length of the septum to distribute flow over the length of the filter septum in a predetermined manner. A flow straightener is provided at the base of the septum to reduce turbulence during precoat and filtration operations, and to reduce the occurrence of large flocs in precoat slurries during coating operations.

公开(公告)号：US5437788A

公开(公告)日：1995-08-01

申请号：US179121

申请日：1994-01-10

申请人： Stephen A. Geibel ,  Ashok K. Bhanot

发明人： Stephen A. Geibel ,  Ashok K. Bhanot

IPC分类号： B01D29/66 ,  B01D29/11 ,  B01D29/52 ,  B01D37/02

CPC分类号： B01D29/114 ,  B01D29/52 ,  B01D37/02

摘要： A filter assembly includes a housing divided into a first chamber and a second chamber. A filter element is disposed in the first chamber, and a conduit is disposed in and opens to the second chamber. A weep hole introduces a backwash liquid from the second chamber into the filter element or the conduit. A differential pressure is then established between the opening in the conduit and the exterior of the filter element to force the backwash liquid through the filter element and thereby clean the filter element and/or strip a precoat layer from the filter element.

摘要翻译： 过滤器组件包括被分成第一室和第二室的壳体。 过滤元件设置在第一室中，并且导管设置在第二室中并且向第二室敞开。 漏水孔将反洗液从第二室引入过滤元件或导管。 然后在管道中的开口和过滤元件的外部之间建立差压力，以迫使反冲洗液体通过过滤器元件，从而清洁过滤元件和/或从过滤元件剥离预涂层。