Patent ID: 7442300
Filing Date: 2008-10-28
Classification: B01D

Abstract:
1. Filter installation for liquids, comprising: a basin with at least one suction opening which is adapted to be closed off, a filter, which has a filter element and, from a removal position above the liquid, is adapted to be lowered in a straight line to an operating position assigned to the suction opening, the suction opening, in the operating position of the filter, being in communication with an inner space of the filter and being connected essentially only through the filter element with liquid outside of the filter in the basin, a sealing device, which, during the lowering of the filter, while an external side of the filter is in contact with the liquid in the basin, seals the inner space of the filter from the liquid in the basin, so that the inner space of the filter is connected essentially only through the filter element with the liquid outside of the filter, a pipe disposed at the suction opening which is connected with the bottom of the basin and the pipe extending upward above a surface of the liquid, an opening at a bottom of the filter to permit pushing of the filter onto the pipe, which opening is sealed with respect to the pipe by the sealing device while the filter is being lowered, at least one opening, which can be closed off, disposed in a wall of the pipe element and in communication with the suction opening, and a slide valve slidably disposed in the pipe, for closing off the at least one opening in the pipe and the suction opening at the same time, the slide valve comprising a sealing lip for sealing the suction opening.