Patent ID: 7083729

Claim:
Device, in particular suitable for cleaning a fluid, such as water, comprising at least one set of a first membrane cloth and a second membrane cloth, each being permeable to water over substantially their entire length, which membrane cloths are held taut in their longitudinal direction, substantially parallel to one another in a frame, the membrane cloths between them delimiting a movement path for fluid, the cloths being displaceable with respect to one another between a first position in which the mutually facing surfaces substantially touch one another, and a second position, in which the cloths lie at a distance from one another and the width of the movement path for the fluid is greater than in the first position, wherein at least one of the cloths, on the side which faces towards the adjacent cloth, is provided with grooves or webs for the purpose of forming channels between the cloths, in the first position of the membrane cloths, characterised in that, the grooves or webs and channels formed by the grooves or webs, respectively, extend in the longitudinal direction of the membrane cloths and in that vacuum means are provided for generating a vacuum between the cloths, via a manifold, wherein the grooves or webs, respectively, extend in the direction of the manifold.