High-concentration pulping machine

Abstract

The invention relates to a high-concentration pulping machine, which comprises a machine case, a dehydration screen cylinder, a conveying impeller, a grinding case and a grinding disc, wherein the conveying impeller is positioned in the dehydration screen cylinder, the dehydration screen cylinder is positioned in the machine case, the machine case is provided with a pulp inlet, the dehydration screen cylinder is communicated with the outer part of the machine case through the pulp inlet, the machine case is provided with a grinding case communication opening, the grinding case is communicated with the machine case through the grinding case communication opening and is provided with the grinding disc, and the grinding disc is coaxially connected with the conveying impeller. The high-concentration pulping machine provided by the invention has the advantages that the pulping concentration is improved, the labor consumption can be saved for 50 percent, a low-concentration pump can be used for pumping pulp, the pulp blockage is avoided, in addition, the cost is reduced, the product quality is greatly improved, and the economic and social benefits are obvious.

Description

technical field [0001] The invention relates to a high-consistency pulp refiner. Background technique [0002] my country is a big papermaking country, and it is very common to make paper with various short fiber pulps. At present, in the beating process, medium and low consistency beating is used. The production practice of using medium and low consistency refining has proved that the fibers will be excessively chopped, resulting in the general low physical indicators of the final product, including tensile strength, and high power consumption. If the high Thick pulp is directly beaten, and its products, including physical indicators such as tensile strength, are greatly improved, while power consumption is greatly reduced. However, there are certain technical problems in the realization of high-consistency beating. Due to the difficulty of pumping due to the high concentration of pulp, the current domestic medium-consistency pump can pump the highest concentration of pulp...

AI Technical Summary

Problems solved by technology

At present, in the beating process, medium and low consistency beating is used. The production practice of using medium and low consistency refining has proved that the fibers will be excessively chopped, resulting in the general low physical indicators of the final product, including tensile strength, and high power consumption. If the high Thick pulp is beaten directly, the physical indicators of the product including tensile strength are greatly improved, and the power consumption is greatly reduced

However, there are certain technical problems in achieving high-consistency beating. Due to the difficulty in pumping due to the high concentration of pulp, the current domestic medium-consistency pump can pump the pulp concentration below 10%, and the pump power consumption is very large; due to the concentration of pulp The higher the fluidity, the poorer the fluidity, so there are often operational problems such as pipeline blockage and mill blockage when the medium-consistency pump pumps the slurry

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