초록 ▼

A replaceable, rectangular, flat, selectively permeable filter element (1) for the framelike section (27, 30) of a sheet filter device (20) consisting of metal and/or hard plastic for the filtration of fluids (liquid and/or gas) can be clamped in by its edge in a leak-proof manner and like a sandwic

A replaceable, rectangular, flat, selectively permeable filter element (1) for the framelike section (27, 30) of a sheet filter device (20) consisting of metal and/or hard plastic for the filtration of fluids (liquid and/or gas) can be clamped in by its edge in a leak-proof manner and like a sandwich between a housing part (30) on the sediment chamber side and a housing part (27) on the filtrate chamber side and supported against the pressure gradient on a draining housing support plate (27), whereby the sediment chamber and the filtrate chamber are provided with connections (22, 25) for supplying and emptying the housing chambers. The flat filter element (1) is formed by a flat filter band pleated into a plurality of close folds and adapted to the inside dimension of a hollow chamber (30) in length, width and depth, whereby it essentially fills up this inside dimension, whereby the open folds and the web backs of one side of the pleating face the sediment chamber (41) and the open folds and the web backs of the other side face the filtrate chamber (47), and the pleating, formed to a flat cuboid (plate), of the filter band blank constructed with at least one layer is surrounded in a frame-like manner by a plastic seal (6) and the latter is provided with a formed sealing flange (7) with which the filter cassette can be clamped in a leakproof manner between the housing parts. The pleating is covered on both sides by a support grid (10, 11) whose edges are anchored in order to brace the filter cassette in the material of the seal (6) and/or of the sealing flange (7).

대표청구항 ▼

In a filter element for equipping framelike sections of a sheet filter device for filtration of flowing fluids, wherein a filter element is clamped by its edge in a leakproof and sandwichlike manner between a housing part on a sediment chamber side and a housing part on a filtrate chamber side, and

In a filter element for equipping framelike sections of a sheet filter device for filtration of flowing fluids, wherein a filter element is clamped by its edge in a leakproof and sandwichlike manner between a housing part on a sediment chamber side and a housing part on a filtrate chamber side, and is supported against a pressure gradient on a draining housing support plate whereby said sediment chamber and said filtrate chamber are provided with connections for supplying and emptying housing chambers, the improvement wherein said filter element is characterized by a replaceable flat selectively permeable filter element (1) formed by a flat filter band with parallel folds of folding openings (2, 2′) and, web backs (3, 3′) said flat filter band is adapted to inner dimensions of a housing part (30) in length, width and depth and is pleated into a plurality of close folds, in which open folds (2) and web backs (3) of one side of a pleating face of a sediment chamber and open folds (2′) and web backs (3′) of a second side face of a filtrate chamber and the pleating of at least a single-layer filter band blank (8, 8′, 9), which pleating is formed to a flat cuboid is bordered in a framelike manner by a plastic seal on an edge to form a leakproof separation of sediment chamber (41) from filtrate chamber (47), said seal circumferentially surrounds two end fold sections (4) of said pleating and two front sides (5) of said pleating, and is provided with a plastic formed sealing flange (7) with which a filter cassette is formed and is clamped between housing parts (27, 30), and whereby support gridwork (10, 11) or foils (13′, 13″) running transversally to fold edges are anchored at least on one side of the filter element (1) by their ends in two sides of circumferential plastic seal (6) located opposite one another and running parallel to the fold edges for stability and to influence flow.