| 摘要 |
In front of the upper surface of the sheet metal construction, and at least at the inlet and outlet, the device has a suction box 3, 6. Spraying baths 7-9 have been arranged between two adjacent suction boxes 3, 4; 4, 5; 5, 6. The boxes are arranged above the rebound zone for drops, which zone is delimited by the borders 20, 21 which are supported by the sides of the box opening. Spraying bars 10 have likewise been arranged in front of the lower side of the construction 1. <IMAGE>
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