Circular beating material feeding method in papermaking and device thereof

Abstract

The circulating beating material feed method in the paper-making process includes circulating tower body pulp material collecting tube, and is characterized by that it also includes pulp material dispersion member which is respectively connected with circulating tower body and pulp material collecting tube, the described dispersion member can be made into the structure of conical flow passage, radiation dispersion flow passage and electric rotating dispersion tube. Said invention can change the centralized pulp fall into dispersed pulp fall along the tower wall, at the same time the impact offalling pulp to the pulp material in the tower can reduce the retardation action of tower wall on pulp material in the tower so as to make the pulp material in the tower stably fall downward and raise the beating quality, and improve paper-making property and paper quality.

Description

technical field [0001] The invention relates to a paper-making feeding technology, in particular to a method and a device for circulating beating and feeding during the paper-making process. Background technique [0002] In the production practice of disc refiner circulation beating in the existing papermaking process, the quality of beating cannot meet the requirements of production because the slurry is beaten through one or more disc refiners; at this time, in order to improve the beating quality, often In the way of circular beating, the slurry is passed through the same or multiple disc refiners again or multiple times until the beating quality of the slurry meets the production requirements; in order to realize the circular beating, it is necessary to transfer the circulation in the existing pre-milling tower Slurry, the circulating slurry is directly sent into the pre-mill tower through the slurry pipe, and the slurry is concentrated in a so...

AI Technical Summary

Problems solved by technology

[0002] In the production practice of disc refiner circulation beating in the existing papermaking process, the quality of beating cannot meet the requirements of production because the slurry is beaten through one or more disc refiners; at this time, in order to improve the beating quality, often In the way of circular beating, the slurry is passed through the same or multiple disc refiners again or multiple times until the beating quality of the slurry meets the production requirements; in order to realize the circular beating, it is necessary to transfer the circulation in the existing pre-milling tower Slurry, the circulating slurry is directly sent into the pre-mill tower through the slurry pipe, and the slurry is concentrated in a solid column and falls at a certain point in the tower, resulting in a fast flow of the slurry at the drop point, while at other positions, especially in the tower Due to the friction between the slurry and the tower wall around the wall, the flow rate of the slurry is relatively slow. Therefore, the flow rate of the slurry at each position in the tower is different, and the front and rear slurry moves in a staggered manner, and cannot flow out of the circulation tower in a balanced and orderly manner. The beating effect of the pulp is uneven, which affects the beating performance of the pulp. This phenomenon is especially obvious for the medium-concentration pulp.

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