| 摘要 |
In a filtering apparatus comprising a plurality of filter bags (19), each bag (19) extends over a cage (18) and is supported at its upper end in a support base (14) forming a division between the dirty gas space below the base (14) and the clean gas space above the base (14). Also supported in the support base (14) are injectors, nozzles or inlet sockets (17) serving for the admission of scavenging gas for periodically cleaning the bags (19), the sockets (17) when in position within the bags (19) serving to seal the bags (19) to the base (14). Each bag (19) and its socket (17) may be releasably secured in the base (14) by three equi-spaced spreader levers (20) the short arms (20b) of which engage in a groove (18b) of a split ring (18a). The levers (20) are retained on the socket (17) by an elastic ring (21) and when the socket (17) is moved downwards to be secured in the base (14) the long arms (20a) of the levers (20) contact a flange (18a) at the upper edge of the split ring (18) so that the levers move over-centre and a seal is established between the filter bag (19), the ring (18) and the base (14). In another embodiment, the levers (20) are replaced by a slotted resilient frusto-conical member which moves over-centre when the socket (17) is inserted. <IMAGE> |
