| 摘要 |
To simplify the assembly of filter modules 10, the supporting tube 1 which carries the filter cells 9 is designed in two pieces. Both the upper tube piece 4 and the lower tube piece 5 contain locking elements 7 which engage correspondingly large recesses 8, thereby making possible a safe interlock as well as an axial movability of the tube pieces 4 and 5.
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