| 摘要 |
1. A filter press having a horizontal axis and comprising, in a resistant frame, a plurality of vertical plates which are movable in the direction of said axis and carry a filtering cloth on each face, characterized in that between the two plates (11) of each pair of adjacent plates is inserted a composite frame (10) which is movable in the direction of said axis and perpendicularly thereto, this composite frame being formed by the assembly of a first simple frame (10a, fig. 3), of a first expansible membrane (30), of a central chamber (10c), of a second expansible membrane (31) and of a second simple frame (10b), in that the plates (11) and the composite frames (10) are each provided with at least two closed bearings (12, 13) which may slide onto horizontal guiding bars or ties (7, 14), so as to maintain said plates (11) and said composite frames (10) vertical and parallel to each other, the bars (14) onto which the closed bearings (13) carried by the composite frames (10) can slide being fixed to uprights (15) which are movable in a direction perpendicular to the axis of the filter, from a first position in which the composite frames (10) are inserted between the plates (11) to a second position in which the composite frames (10) are entirely withdrawn from the filter and in which the filtering cakes contained in each composite frame (10) are expelled by the expansion of the two membranes (30, 31) from each composite frame (10), as well as from said second position to said first position, and in that at least one perforated pipe (20) is fixed to each composite frame (10) so as to allow the washing of the filtering cloths of the plates (11), whereas at least a liquid sprayer (20a) is fixed above or below each plate (11), so as to enable the washing of the contacting surfaces of the composite frames (10). |
