A beating device, system and beating method

Abstract

The invention discloses a beating device, a system and a beating method. The beating device includes a motor, a motor bracket, a rotating shaft, a cylinder, a cylinder bracket and a blade; the motor is fixed on the motor bracket, and the output shaft of the motor passes through the The coupling is connected with the rotating shaft; the rotating shaft is provided with multiple sets of blades, and extends into the cylinder; the cylinder is installed on the cylinder bracket, and the inner wall of the cylinder is provided with a plurality of bars, and the upper end of the cylinder A slurry outlet is provided, and a slurry inlet is provided at the lower end. When the blade of the present invention rotates at high speed, the natural fiber suspension forms a high-speed shear flow in the narrow flow channel. At this time, the tip of the knife has a certain inclination angle to the natural fiber from the axial direction (that is, the length direction) or the axial direction, and cuts in and picks the wire. And refinement, that is to get micro-nano cellulose. In a short time, the beating degree can reach 98°SR. 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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