Drum pulping device and pulping method thereof

Abstract

The invention provides a drum pulping device capable of guaranteeing the physical strength of raw paper and reducing the treatment load of subsequent sections, and a pulping method thereof. The drum pulping device comprises a chain plate unit for conveying and dispersing domestic OCC waste paper and a drum pulper for pulping the dispersed domestic OCC waste paper, wherein the drum pulper comprisesa rotary drum and a pulp tank arranged below the rear portion of the rotary drum, a disintegrating area is provided with disintegrating cutters spirally arranged along the inner side wall of the rotary drum at intervals, the disintegrating cutters can rotate along with the rotary drum to disintegrate a waste paper raw material into pulp and push the disintegrated pulp into a screening area, the screening area is provided with screening holes formed in the circumferential direction of the rotary drum and used for discharging the pulp into the pulp tank, the screening area is further provided with spiral baffles spirally arranged on the inner side wall of the rotary drum at intervals, and a stirring assembly for stirring the pulp is arranged in the pulp tank. The pulping method comprises: waste paper dispersion, disintegrating, screening, tailing residue packaging, stirring, first-stage residue removal, sediment, second-stage residue removal and residue fishing.

Description

【Technical field】 [0001] The invention relates to a drum pulping device and a pulping method thereof. 【Background technique】 [0002] Due to the quality of waste paper raw materials, production equipment and technology, 70g / m 2 The production of the following quantitative corrugated medium paper is still relatively small. According to market supply and demand information, there is basically no 50g / m2 packaging paper and cardboard market 2 The following quantitative corrugated medium. At present, the low-gram weight products on the market mainly use domestic waste paper OCC and some imported waste paper American waste AOCC and European waste EOCC to increase the strength of the paper sheet. However, since domestic waste paper is mainly grass fiber, which contains many impurities, low fiber length, and low strength, how to ensure the strength of the fiber hinders the low-quantity process of high-strength corrugated base paper. However, the existing production technology ge...

AI Technical Summary

Problems solved by technology

However, since domestic waste paper is mainly grass fibers, which contain many impurities, low fiber length, and low strength, how to ensure the strength of fibers hinders the low-quantity process of high-strength corrugated base paper

However, the existing production technology generally uses a hydraulic pulper to pulp the waste paper. In this kind of disintegration method, because the secondary fiber is cut by the blade of the paper shredder, the fiber becomes shorter, resulting in a change in the physical index of the paper. decline

Plastic impurities, etc. are cut and become smaller, so they enter the next process with the slurry, thereby increasing the processing load of the next process

Images