| 摘要 |
The invention relates to a curtain spray pipe having a device for cleaning a longitudinal slit-shaped opening in the pipe wall through which a curtain 6 of a fluid is to be sprayed out. The cleaning device 7 comprises a dog 8 inside the pipe and a cleaning element 9 projecting from the dog through the slit 5, the dog being arranged to be moved to and fro within the spray pipe between the two ends of the slit opening, cleaning the slit by means of the projecting cleaning element. <IMAGE> |
