| 摘要 |
<p>A metal filter plate for a chamber filter press comprises a frame (2) having an upper frame part (5a) and a lower frame part (5b), which are identical, as well as identical side parts (6a, 6b). These parts are made from metal profiled sections. The upper frame part (5a) and the lower frame part (5b) are each provided with milled or bored outlet ducts (7) and outlet bores (8) as well as with a heating duct (9) and a heating bore (11) which opens into a cavity (3) between two plates (1a, 1b) surrounded by the frame (2). The cavity (3) is divided into a meander-like passageway by partitions (12) which leave passages free alternately on the left and right-hand sides. The upper frame part (5a), the lower frame part (5b) and the side parts (6a, 6b) are welded to one another and to the plates (1a, 1b). The frame is surrounded externally by an insulating layer (13) of heat-insulating and heat-resistant material. The filter plate can be heated and cooled, produced very easily and cheaply, is heat-resistant to at least 600 °C and has a high degree of mechanical strength. It is suitable for chamber filter presses in which the filter cake is to be subjected to a contact drying, vacuum or freeze-drying process after being separated from the filtrate.</p> |
