Anhydrous fiber-dyeing dyeing machine for mixing fluid medium

Abstract

The invention discloses an anhydrous fiber-dyeing dyeing machine for a mixing fluid medium. The anhydrous fiber-dyeing dyeing machine comprises a dyeing cylinder, a carbon dioxide pressurizing systemand polar medium pressurizing system, a cotton stepping system, a circulating dyeing system, a carbon dioxide recovery system, a polar medium separation and recycling system and an automatic unloadingsystem. Since the two sets of carbon dioxide medium and polar medium pressurizing and separation and recovery systems are arranged in the system, dyeing processing of the mixing fluid medium in an anhydrous fiber-dyeing vat and a dyeing circulation system of the vat as well as effective modification of the hydrophobic carbon dioxide fluid medium is realized effectively, so that the dyeing performance and dyeing effect of the special dye molecules on the hydrophilic natural fibers are remarkably improved. With the cotton stepping system and the unloading system, the treading efficiency of thedyeing vat is improved obviously and the yield of processed products and the automatic operation are enhanced.

Description

technical field [0001] The invention relates to an anhydrous fiber dyeing machine suitable for mixed fluid medium, which belongs to the technical field of manufacturing pressure vessels and textile dyeing and finishing equipment. Background technique [0002] In recent years, with the gradual improvement of ecological and environmental protection requirements and the strict implementation of relevant environmental protection policies by governments at all levels, the traditional textile printing and dyeing industry, which consumes a lot of water and discharges a lot of pollutants, has encountered unprecedented challenges and development difficulties. Therefore, the development of green ecology and clean production technology, especially the water-free dyeing technology that does not use water as a medium, has attracted more and more attention from textile printing and dyeing enterprises. As an important content in non-aqueous medium dyeing technology, supercritical carbon di...

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Problems solved by technology

[0003] However, for all kinds of hydrophilic natural fibers containing a large number of hydroxyl groups, amino groups, etc., in the hydrophobic supercritical carbon dioxide fluid medium, the hydrogen bonds between the fiber macromolecular segments cannot be effectively opened, so that the fibers cannot be expanded well. Can not provide the necessary conditions for the phase diffusion of dye molecules in the fiber

At the same time, the hydrophobic supercritical carbon dioxide fluid medium cannot dissolve polar dyes well, so it cannot really achieve good dyeing of various natural fibers

Therefore, the dyeing of natural fibers in a single supercritical carbon dioxide fluid medium has always been a fundamental problem that plagues its development and application.

[0004] At the same time, judging from the public literature reports and practical applications, the existing supercritical carbon dioxide fluid equipment systems for textile dyeing and processing in relevant units at home and abroad are only for a single carbon dioxide medium

The function of its equipment system is relatively single, its applicable fiber types are limited, the degree of automation is low, the operation is cumbersome, and the processing efficiency is low. processing needs

Therefore, this also significantly affects and limits the industrial application of supercritical fluid anhydrous dyeing technology

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