| 摘要 |
<p>The suction device has a funnel (8) connected via a channel (9) to a vacuum chamber. The funnel mouth (15) has a convex air guide plate (20,21). The guide plate consists of an elastically flexible material, and has guide surfaces on front and rear longitudinal sides (16,17). The suction mouth has an associated high pressure washer (4). The plate is formed on a tubular body (18,19) aligned parallel to the longitudinal sides.</p> |
