PLC-based automatic delivery system for alkali liquor of mercerizing machine

Abstract

The invention mainly discloses a PLC (Programmable Logic Controller)-based automatic delivery system for alkali liquor of a mercerizing machine. The system is composed of a cloth hair filter, an alkali liquor delivery pipe valve unit and a PLC control system. The automatic delivery system is capable of preparing the concentrated alkaline, the recycled alkaline and the low-concentration alkaline into the alkali liquor with the concentration needed by the mercerizing technology according to certain proportion, and automatically conveying the prepared alkali liquor into the appointed station of the mercerizing machine, wherein the whole delivery process is finished on-line in real time. The automatic delivery system also can realize periodical washing of detection elements, thereby ensuring the accuracy of the detection structure. Moreover, the automatic delivery system also can realize on-line setting of technical parameters, recording and query of consumption of the concentrated alkaline, display of alarm information and the like. The system provided by the invention is simple in structure, convenient to operate, accurate in measurement and high in working efficiency; influence of personal factors on the production process and the product quality can be effectively reduced, the stability of the product quality is improved, the unit energy consumption of products is reduced and enterprise revenue is improved.

Description

technical field [0001] The invention belongs to the field of automatic control of textile printing and dyeing machinery equipment, in particular to a PLC-based automatic lye distribution system for mercerizing machines, which is used for automatic control of online lye concentration of mercerizing machines. Background technique [0002] The mercerizing process is an important part of the pre-treatment technology of printing and dyeing. In the mercerizing process, the fabric is first treated with a certain concentration of lye, and then the lye adsorbed on it is washed off under the condition of applying tension to the fabric, thereby improving the fabric. And improve fabric luster, strength and dimensional stability. The stability of the lye concentration largely determines the treatment effect of the mercerizing process. [0003] At present, small and medium-scale printing and dyeing enterprises in my country have a low degree of automation in the field of online control o...

AI Technical Summary

Problems solved by technology

[0003] At present, small and medium-scale printing and dyeing enterprises in my country have a low degree of automation in the field of online control of lye concentration in mercerizing machines, and the concentration of lye in most printing and dyeing enterprises is completed by manual timing titration.

The disadvantages of this control method can be summarized as follows: First, the labor intensity of the workers is high, and the work efficiency is low. The printing and dyeing production is generally 24 hours of continuous operation. In order to ensure the quality, the workers must monitor the equipment in real time; The ratio and concentration detection of lye cannot be carried out simultaneously, and the concentration of mercerized lye fluctuates greatly, resulting in unstable process and inevitably affecting product quality; third, the management level cannot be fundamentally improved, which is not conducive to tracing the cause of product quality problems; In addition, manual operation is not conducive to the statistics of the consumption of mercerizing lye, and it is easy to cause waste of lye and environmental pollution

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