| 摘要 |
Such a bag filter comprises a multiplicity of extensible filter bags (1) vertically disposed in a vacuum cleaning housing, which are each fixed at their lower, open ends and at their upper, closed ends are each suspended from the tensioning platform (6) by means of a pretensioned spring (4) and a pulling means (5). In order, with filter bags of this type, to make the magnitude of the pretensioning force adjustable and readable, it is proposed that a permanent extension of the filter bags is displayable by means of a measuring device. Furthermore, the pretensioning force (Pv) is adjustable and displayable by means of a force gauge (14) connected to each pulling means (5) and disposed on the tensioning platform (6). <IMAGE>
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