Smoothing method for wet paper web and press section for a paper machine
A wet paper web, paper machine technology, applied in the paper machine, press section, textiles and paper making, etc., can solve the difficulty of maintaining and separating the paper feed belt, the unstable traveling of the wet paper web, and the difficulty in maintaining and separating the wet paper web. and other problems to achieve the effect of increasing lifespan and flexibility
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no. 1 example
[0080] In showing the first embodiment of figure 1 In this case, the wet paper web 1 is conveyed from a wire part not shown in the figure in a state where one side is held by the wire 8, it is sucked by the suction roll 5a and one side is held by the felt 6a, and the paper web 1 is inserted into the felt 6a. In the state between 6a and 6b, it is further conveyed to the final dewatering press roll 4. The last dewatering press roll 4 comprises a shoe module 4a and a lower press roll 4b through which pressing force is applied to the wet paper web 1 to transfer the water contained in the paper web to the felts 6a and 6b to complete the water removal . Arrows in the drawings indicate the direction of travel of the wet paper web 1 .
[0081] The dewatered wet paper web 1 is inserted between the felts 6 a and 6 b in the last dewatering press roll 4 and transferred to a transfer suction roll 21 . By suction of the transfer suction roll 21, the wet paper web 1 is sucked onto the tr...
no. 2 example
[0099] The second embodiment of the present invention is in figure 2 exemplifies. The difference from the first embodiment is that the transfer suction roller 21 and the smoother lower roller 12b directly form the first nip area N 1 , the squeeze roll 12c composed of variable crown rolls is arranged downstream of the conveying suction roll 21, and the first squeeze zone N 1 Formed by squeeze roll 12c and smoother lower roll 12b. Except for this difference, the rest is similar to the first embodiment, and the same reference numerals are used for the same parts in the second embodiment. Therefore, explanation of common components is omitted.
[0100] In the second embodiment having the above-mentioned structure, the wet paper web 1 inserted between the felts 6a and 6b in the press section 2 is pressed and dehydrated in the final dewatering press section 4, and is sucked to the conveyance through the felt 6a. on the suction roll 21, and then removed from the felt 6b.
[010...
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