Secondary adjusting steam box and method for adjusting paper horizontal web water content
A technology of secondary adjustment and steam box, which is applied in the direction of papermaking, paper machine, textile and papermaking, etc. It can solve the problems of wasting steam, steam overflow, and reduced air flow, so as to ensure the adjustment effect, reduce the amount of secondary adjustment, and reduce the The effect of poor flow
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[0042] Such as Figure 1 to Figure 6 Shown. The steam box for secondary regulation of the present invention includes a steam box, a steam main pipe 1 and an air extraction main pipe 6. The inlet end of the steam main pipe 1 is provided with a main pipe control valve 2;
[0043] The outside of the steam box is provided with a preheating chamber 12; the preheating chamber 12 is connected between the inlet end of the steam main pipe 1 and the main pipe control valve 2 through a preheating branch pipe 9 with a preheating control valve (10) The pipeline; the preheating chamber 12 is connected to a steam return pipe 11, and a control valve is provided on the steam return pipe 11;
[0044] The steam box includes in turn along the paper's advancing direction: an air extraction zone 44 with a perforated plate 14 or a slotted plate at the bottom, a steam injection zone 33 with a perforated plate 14 or a slotted plate at the bottom, and a stagnation zone 22 with an opening at the bottom. Th...
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