Dyeing equipment and dyeing process for regenerated polyester yarns

Abstract

The invention belongs to the technical field of polyester yarn processing, and particularly relates to dyeing equipment and a dyeing process for regenerated polyester yarns. The dyeing equipment comprises a dyeing device, a feeding device, a material dissolving device and a controller; the dyeing device further comprises a cylinder body, a cylinder cover and a yarn cage assembly; The cylinder cover is hinged to the upper end of the cylinder body; the outer wall of the cylinder body is fixedly connected with a servo motor; the output end of the servo motor is fixedly connected with a hinged point of the cylinder cover and the cylinder body; and a feeding hole and a discharging hole are formed in the lower end of the cylinder body. A spiral plate is arranged and can be driven by a driving motor to rotate; on one hand, the flow speed of dye liquor is increased, so that the dip-dyeing speed of dye to yarn rolls is increased, and the dip-dyeing efficiency of the yarn rolls is improved; and on the other hand, dye particles in the dye liquor are stirred to be diffused upwards, so that the rising dye concentration is improved, the dip dyeing effect of the dye on the upper yarn rolls is enhanced, the color difference of the upper yarn rolls is reduced, and the product quality is improved.

Description

technical field [0001] The invention belongs to the technical field of polyester yarn processing, and in particular relates to dyeing equipment and a dyeing process for regenerated polyester yarn. Background technique [0002] Regenerated polyester yarn is made of polyester cloth, waste polyester bottle flakes, spinning waste, foam material, pulp block, waste bottle flakes are crushed and cleaned, the mixture of various materials is dried, melt extruded, and spun , winding, clustering, drafting, crimping, relaxation heat setting, polyester filaments of different lengths are formed after cutting, so the strength and other properties of recycled polyester fibers are poor, so the industry usually dyes them with package dyeing machines. [0003] For example, a Chinese patent with the application number CN201821829553.8 discloses a bobbin dyeing machine, which is heated by steam, which is environmentally friendly and energy-saving; it adopts a large-screen touch screen PLC contro...

AI Technical Summary

Problems solved by technology

[0003] For example, a Chinese patent with the application number CN201821829553.8 discloses a bobbin dyeing machine, which is heated by steam, which is environmentally friendly and energy-saving; it adopts a large-screen touch screen PLC control, a flexible and convenient operating system, digital setting of process parameters, and a high degree of automation; The cover of the feeding device is designed to avoid odor emission; the heat exchange device is independently designed, easy to maintain, and has less heat loss, which has the advantages of energy saving and emission reduction, product quality assurance, cost saving, and production efficiency improvement; however, this technical solution does not completely solve the problem of dyes. The dyeing machine is continuously filled from the bottom of the dyeing machine, so that the dye is in contact with the lower yarn roll, and the lower yarn roll is dyed, so that the dye concentration gradually decreases with the increase of the dye, so that the dyeing effect of the dye on the upper yarn roll is weakened. , causing color difference in the inner and outer layers of the upper yarn roll, which in turn causes the limitation of this technical solution

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