Drying net circuit for drying in paper making

Abstract

The present invention provides a dryer wire loop circuit for papermaking drying, including a dryer wire and several guide rollers, the dryer wire is positioned and wound on a drying cylinder through a plurality of guide rollers, each of the dryer wires forms a closed loop, and the front of the dryer wire is in contact with the drying cylinder. The surface of the cylinder is tightly attached, and the dryer fabric is driven by the dryer to run endlessly. The dryer fabric is a polyester woven fabric; the dryer fabric circuit is also equipped with at least one heating roller for heating the dryer fabric. The beneficial effects of the present invention are: because the heating roller also heats the polyester woven dry web in the oven simultaneously and removes moisture, one of the polyester woven dry webs presses the paper sheet tightly from the top and the other from below When the surface of the heated cylinder is heated, the paper is heated inside and outside at the same time, so that the moisture loss inside and outside the paper is basically consistent, and the moisture distribution inside and outside the paper is evenly distributed, so that the gloss, color and other physical properties of the front and back sides are consistent. .

Description

technical field [0001] The invention relates to the technical field of drying devices, in particular to a drying device for a paper machine. Background technique [0002] The paper machine is the combined equipment for paper making, mainly composed of wire, press and drying. There are two types of wire mesh, cylinder wire and fourdrinier wire, the press section is composed of press rolls and papermaking felt, and the drying section is composed of one or several drying cylinders. [0003] In the drying section, it is divided into front group drying cylinders and rear group drying cylinders, generally each has 6 drying cylinders, totaling 12 drying cylinders. At the same time, two sets of dryer wire loops (flat wires) are used in conjunction with the front and rear dryer cylinders, one from above and the other from below to press the paper sheet tightly onto the surface of the heated cylinder. The drying of the paper sheet is to achieve the dryness required by the product pr...

AI Technical Summary

Problems solved by technology

[0005] Polyester Woven Dryer Fabric When one presses the sheet tightly onto the heated cylinder surface from above and the other from below, the polyester woven fabric will also A large amount of moisture is attached; in this way, during the drying process of the paper sheet, the moisture near the dryer cylinder is quickly dried; and because the polyester woven dry mesh will also adhere to a large amount of moisture; the moisture outside the paper sheet near the dryer cylinder cannot It is dried in time; the moisture distribution inside and outside the paper is uneven, which causes the gloss, color and other physical properties of the front and back of the dried paper to be inconsistent.

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