| 摘要 |
A Vacuum conveyor device ( 10 ) with a multi-stage filter system, has at least one inner filter ( 10 A), one outer filter ( 10 B), and one filter adapter ( 20 ) especially for air-tight and/or fluid-tight insertion of at least one of the filters, for which the outer filter is arranged up-stream of the inner filter. In order of preparing a filter system for a vacuum conveyor device, which features both the cleaning-related elements of conventional filters and also the safety-related advantages of multi-stage systems, but which remains compact in structure, the one or more inner filters ( 10 A) are used as carrier units for the one or more outer filters ( 10 B) that can be mounted on or inserted into these inner filters and can be connected or are connected to the filter adapters ( 20 ).
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