Convective dyeing vat

Abstract

The invention provides a convective dyeing vat. The convective dyeing vat comprises a dyeing vat body and a vat cover, a circulating pipeline is arranged in the dyeing vat body, two ends of the circulating pipeline are positioned on the upper portion and the lower portion of the dyeing vat body respectively and are lower than the dyeing liquid level in the dyeing vat body, an air circulating pipeline is arranged in the dyeing vat body, two ends of the air circulating pipeline are positioned on the upper portion and the lower portion the dyeing vat body respectively and are higher than the dyeing liquid level in the dyeing vat body, liquid outlet holes are uniformly distributed in the bottom of the dyeing vat body, and the lower ends of the circulating pipeline and the air circulating pipeline are connected with the liquid outlet holes. The convective dyeing vat has the advantages that by the aid of the circulating pipeline and the air circulating pipeline, dyeing liquid in the dyeing vat body is enabled to generate circulating convection and to be full of air bubbles, relative motion between fabric and the dyeing liquid is strengthened by the circulating convection and the air bubbles rising up in the dyeing liquid, and dyeing effect is improved effectively.

Description

technical field [0001] The invention relates to the field of textile dyeing and finishing equipment, in particular to a dye vat with good internal convection effect. Background technique [0002] Dyeing refers to the process in which the dye is dyed from the dye solution to the fiber and forms a uniform, firm and bright color on the fiber. The chemical composition of various fibers is different, and the applicable dyes are also different. Cotton fabrics are mainly dyed with reactive dyes. Polyester fabrics are mainly dyed with dispersed miscellaneous materials. The commonly used dyeing methods include high temperature method, carrier method and hot melting method. Modified polyester fabrics with anionic groups can also be dyed with cationic dyes to obtain rich and bright colors. Nylon fabrics are mainly dyed with acid dyes, and can also be dyed with acid mordant dyes, disperse dyes and some direct dyes at near boiling points. Acrylic fabrics are mainly dyed with cationic...

AI Technical Summary

Problems solved by technology

[0003] The dyeing of fabrics is generally carried out in dyeing vats. When dyeing, the fabric is put into the dyeing vats for dyeing bath. In order to make the dyeing vats reach a certain economy in general dyeing factories, the dyeing vats are often kept in a saturated state, which increases the output and maintains It is economical, but this method brings new problems. Because the fluidity of the dyes in the dyeing vat becomes poor, the places where the fabrics gather are not easy to be colored, resulting in poor fabric dyeing pass rate

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