초록 ▼

A filter insert, which combines high mechanical load-bearing capacity with good characteristics as regards the shedding of filter cake, has lateral filter walls which are folded in planar or zigzag manner and which are connected to horizontal wall components in mechanically loadable and air-tight ma

A filter insert, which combines high mechanical load-bearing capacity with good characteristics as regards the shedding of filter cake, has lateral filter walls which are folded in planar or zigzag manner and which are connected to horizontal wall components in mechanically loadable and air-tight manner. The unit so obtained is in turn connected in tight and mechanically loadable manner to a top section by which the filter insert is capable of being attached to the perforated plate of a filter casing.

대표청구항 ▼

A back-flushable filter insert, comprising: (a) a top section having means for attaching to a perforated plate of a filter casing; (b) a pocket-shaped filter section fixed tightly against the top section, the filter section comprising (i) two lateral filter walls each folded in a zig-zag manner, (ii

A back-flushable filter insert, comprising: (a) a top section having means for attaching to a perforated plate of a filter casing; (b) a pocket-shaped filter section fixed tightly against the top section, the filter section comprising (i) two lateral filter walls each folded in a zig-zag manner, (ii) an upper inherently rigid wall component, (iii) a lower inherently rigid wall component, and (iv) a rear inherently rigid wall component, wherein the filter walls and the wall components are connected to one another and to the top section in a fluid-tight and mechanically loadable structure to maintain a high degree of mechanical stability, both during application of a relatively low pressure to the filter insert during filtration and also during application of a relatively higher pressure to the filter insert during backflushing, and at least one central internal component supporting the filter walls and positioned between the upper inherently rigid wall component and the lower inherently rigid wall component.