Online detection method for dye liquor components of bundle type dye machine on basis of programmable logic controller (PLC)

Abstract

The invention discloses an online detection method for dye liquor components (sodium hydrosulfite, indigo and sodium hydroxide) of a bundle type dye machine on the basis of an Omron programmable logic controller (PLC). An online detection system comprises an indigo dye liquor online detection device, a vulcanizing dye liquor online detection device, a calibration device, the PLC and an industrialcontrol computer. The online detection method collects dye liquor samples in a dye tank of the dye machine in a real-time online mode, utilizes the industrial control computer and the PLC to serve ascores, detects concentration of corresponding components of the dye liquor in an online timing mode by means of a potentiometric titration method, and detects the pH value and the temperature of the dye liquor in an online real-time mode. The system can clean pipelines after completion of every test. The online detection method can calibrate the indigo dye liquor online detection device or the vulcanizing dye liquor online detection device according to requirements to ensure accuracy of detection results. The online detection method can ensure detection accuracy of the dye liquor components to improve dye quality of dyed fabrics and enable production cost and labor strength of skilled workers to be reduced.

Description

technical field [0001] The invention relates to a method for online detection of dye liquor components of a beam dyeing machine, which is suitable for the field of dyeing textiles with vat dyes. Background technique [0002] Denim fibers are dyed with indigo dyeing solution or vulcanization dyeing solution. Manual detection is used to detect the amount of vat dyeing solution and the content of each component in the dyeing solution. Due to the relatively long time interval of manual detection, coupled with the randomness, inaccuracy and sense of responsibility of the operators themselves, human factors have a greater impact on the detection results of the dyeing components, and it is difficult to control the dyeing tank. The dyeing components remain stable, which causes color difference before and after dyeing, that is, defective cloth. Therefore, ensuring accurate and stable measurement of dye liquor components and reducing the influence of human factors has become the key ...

AI Technical Summary

Problems solved by technology

Due to the relatively long time interval of manual detection, coupled with the randomness, inaccuracy and sense of responsibility of the operators themselves, human factors have a greater impact on the detection results of the dyeing components, and it is difficult to control the dyeing tank. The dyeing components remain stable, which causes the color difference before and after dyeing, that is, the appearance of defective cloth

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