| 摘要 |
<p>The invention relates to a process and a filter system for continuous filtration of liquids, in particular viscous fluids such as molten polymers. In the process according to the invention, multiple filter housing subassemblies (12) are assembled around rotating inlet and outlet headers (3,4) which in turn are fitted to fixed inlet distributor (1) and outlet collector (2), forming a rotatable filter assembly that at the same time allows a uniform product flow to continuously pass through all of the installed filter housings during the normal filtration cycle, and the majority of the installed filter housings during the rotation cycle. In the rotation cycle when necessary, the rotatable filter assembly is rotated so that one housing subassembly is isolated from the flowing product and in turn gets removed or prepared for servicing and replacement of the filter element(s). After the service completion, the rotatable filter assembly is rotated further to the one and only bleeding and venting position so that the newly serviced housing subassembly can be filled with product by bleeding through the inlet bleeding port and vented through the outlet vent before the rotatable filter assembly is rotated further in order to return it to the filtration service.</p> |
