Disc mill and method for controlling action element action in beating process thereof

Abstract

The invention discloses a disc refiner and a control method for the actuation of executive elements during the beating of the disc refiner. The control method comprises the following steps: a pulp inlet pipeline or a pulp outlet pipe of the disc refiner is provided with a pressure sensor; and the actuation of the executive elements of the disc refiner is controlled according to the pulp flow pressure of the pulp inlet pipeline during the beating, thereby controlling the beating process of the disc refiner. The method adopted in the invention is to control the actuation of the executive elements during the beating of the disc refiner, and can effectively prevent the friction collision among the executive elements of the disc refiner caused by pulp interruption during beating, thereby protecting the disc refiner.

Description

technical field [0001] The invention belongs to the field of pulping and papermaking, and relates to a disk refiner for pulp preparation and a method for controlling the action of an actuator during the pulping process. Background technique [0002] The production process of the pulp and paper industry includes two stages of pulping and papermaking technology. The pulping process is to make various raw materials (including wood raw materials, straw, wheat straw, bamboo and other non-wood raw materials) by chemical or mechanical methods. The fiber raw material for papermaking——slurry, and the papermaking process uses the product slurry in the pulping section to be beaten and used for papermaking by paper machines to produce products suitable for various purposes—paper. The function of beating is to make the pulp fiber produce the effects of water absorption, swelling, fibrillation, and cutting through the action of mechanical shear force, and improve the bonding force between...

AI Technical Summary

Problems solved by technology

[0005] During the beating process, certain factors may cause a sudden interruption of slurry delivery, such as blockage due to high local slurry concentration, low liquid level in the slurry tank, or failure of the slurry delivery device, etc.

The sudden interruption of the slurry will cause no slurry to pass through the grinding area, which may cause severe friction or even collision between the movable grinding table and the fixed grinding table, resulting in excessive wear of the grinding table, and even rupture of the grinding table, resulting in serious consequences

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