| 摘要 |
The invention relates to a sealing device in a cylinder drier, intended for incorporation in a paper machine and including a plurality of cylinders arranged in two substantially parallel rows (1a,1b), the paper web (2) being trained serpentine about said cylinder during drying, said web being carried by an endless porous Fourdrinier drier (3) adapted for pressing the web against the cylinder surfaces in one row of cylinders and situated between the paper web and the cylinder surfaces in the other row. Two shielding members (7,15) being disposed in the space restricted by the wire and an intermediate cylinder surface on that cylinder which the wire and the web come onto and leave. Said shielding members facing the wire and extending substantially in parallel with and close to the wire and over the entire width of the web. The end portion of each shielding member being free and extending into the area for the nip between the wire and the intermediate cylinder, whereas the opposite end portion is connected to a blowing box (10,14) provided with openings for blowing air in directions which are substantially in parallel with or form an acute angle to the wire, said air jets being directed in the opposite direction relative to the corresponding shielding member. |
