Corrugated paper board production line

Abstract

The invention discloses a corrugated paper board production line. A single-face machine system, a multi-face machine system and an adjusting pipeline are arranged between a main vapor opening and water-vapor separation equipment in a parallel connection manner. The water-vapor separation equipment is connected with a water return machine, a paper board preheating system and a three-time utilization system. After water-vapor separation, vapor enters the paper board preheating system and the three-time utilization system, and vapor coming out of the paper board preheating system enters the water return machine through a water return pipeline. The adjusting pipeline is connected with the three-time utilization system. The corrugated paper board production line is provided with a pressure and temperature closed-loop feedback system, and therefore the temperature in the production process can be controlled to be below the temperature of the paper making process, damage to the water balance of body paper is the minimum, and body paper fibers can keep the original state; and therefore it is guaranteed that produced corrugated paper boards are smoother, the physical index is greatly increased, and the edge pressure and break resisting data of the corrugated paper boards are better.

Description

technical field [0001] The invention relates to the field of corrugated cardboard production equipment, and more specifically discloses a corrugated cardboard production line. Background technique [0002] The corrugated cardboard production line in the traditional process is produced at high temperature, and the temperature in the entire production process is higher than the production temperature of the papermaking process. During the production process, the base paper is first baked at high temperature, and the physical properties of the base paper will tend to deteriorate under high temperature baking, that is, high temperature baking will make the base paper brittle and lose its due ring pressure and burst resistance data. Then, the baked base paper absorbs water at the position of the single-facer, resulting in the loss of moisture in the base paper, making the moisture of each layer of paper unbalanced, and finally causing the produced corrugated cardboard to appear t...

AI Technical Summary

Problems solved by technology

[0004] 1. The steam points such as preheating of the backing paper, single-sided machine, and core paper all use the same return water pipe for return water, which causes the back pressure in the pipelines of each steam point to interfere with each other;

[0005] 2. The scattered steam from each steam point will eventually accumulate at the position of the recovery machine, forming a cumulative effect, causing the recovery machine to be overloaded and exhausted, which will easily lead to damage to the recovery machine;

[0006] 3. Multi-stage suction pumps are prone to remote attenuation effects, resulting in poor exhaust at the remote end and unable to exhaust steam smoothly;

[0007] 4. The high back pressure production environment in the pipelines of each steam point causes the trap to work poorly and the thermal efficiency is low, which directly affects the production efficiency;

[0008] 5. There is no constant temperature and constant pressure control for each heating point, but in order to ensure the process conditions, excessive steam must be used, resulting in waste of resources and virtually increasing production costs

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