Pulping device and system and pulping method

Abstract

The invention discloses a pulping device and system and a pulping method. The pulping device comprises a motor, a motor support, a rotating shaft, a cylinder, a cylinder support and blades. The motoris fixed to the motor support, and an output shaft of the motor is connected with the rotating shaft through a coupler. A plurality of groups of blades are arranged on the rotating shaft and extend into the cylinder body; the barrel is mounted on the barrel support, a plurality of blocking strips are arranged on the inner wall face of the barrel, a slurry outlet is formed in the upper end of the barrel, and a slurry inlet is formed in the lower end of the barrel. When the blades rotate at a high speed, natural fiber suspension liquid forms high-speed shear flow in a narrow flow channel, at themoment, a tool nose has a certain inclination angle in the axial direction (namely the length direction) or the direction opposite to the axial direction of the natural fibers, cut-in, silk picking and refining are conducted, and then the micro-nano cellulose is obtained. The beating degree can reach 98-degree SR in a very short time. The invention relates to the technical field of papermaking.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a beating device, a system and a beating method. Background technique [0002] At present, there are many beating methods in the pulping and papermaking process, including low-consistency beating (concentration is 2-6%), medium-consistency beating (concentration is 8-20%) and high-consistency beating (20-35%). Commonly used beaters include trough beater and PFI mill (vertical beater). The trough beater belongs to low-consistency beating. Usually, when the beating time is 90 minutes, the beating degree can reach about 88°SR; the PFI mill is medium-consistency Beating, when the beating time is 12 minutes, the beating degree can reach 69 ° SR, and as time goes by, the beating degree can not reach more than 90 ° SR. In addition, low-consistency beating equipment also includes cylindrical refiners, conical refiners and disc refiners. The medium-high-consistency beating equipment...

AI Technical Summary

Problems solved by technology

[0003] The existing beating device cannot achieve a beating degree of more than 90°SR in a short time

In addition, the existing beating device cannot retain the shape of the fibrils during the pulping and papermaking process, and the fibers become uncontrollably smaller from the radial (diameter) and axial (length) dimensions during the preparation process, that is, the axis cannot be retained. At the same time, the fiber is thinned to the length, especially it is impossible to obtain the independent micro-nano cellulose material with high length-to-diameter ratio

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