TH-LV High Temperature Overflow Jet Dyeing Machine

TH-LV series high temperature overflow jet dyeing machine is designed for dyeing and pre- and post-processing high-end knitted and woven fabrics. It achieves uniform dyeing under high temperature and high pressure. Utilizing dual overflow and jet dyeing technologies, coupled with intelligent temperature control and precise liquid control systems, it effectively handles dyeing of diverse fabrics, including cotton, silk, velvet, polyester, nylon, nylon, T/C, T/R, N/C, and N/R. Featuring a wide dyeing temperature range, a low liquor ratio, and a high degree of automation, this overflow jet dyeing machine enables semi- or fully automated operation from feeding, dyeing, to discharging, significantly improving dyeing and finishing efficiency and quality. It is the ideal dyeing machine for medium- to large-scale textile printing and dyeing enterprises.

The TH-LV series high-temperature overflow jet dyeing machine achieves efficient fabric dyeing through the synergistic effect of overflow circulation and jet-assisted propulsion. The specific working principles are as follows:

* Fabric Conveying and Circulation: After the fabric enters the dyeing vat through the fabric feeder, it is pulled by the guide rollers and driven by the overflowing dye liquid, which circulates steadily along the inner wall of the dye vat, ensuring that the fabric is free of tangles and wrinkles during the dyeing process.

* Dye Overflow and Jetting: After the dye liquid is heated to the set temperature by the heating system, a portion overflows from the upper part of the dye vat and evenly distributes itself over the fabric surface, creating a continuous dye coating. The remaining portion is directly applied to the fabric by a high-speed jet through a high-pressure jet, allowing the dye to quickly penetrate the fibers. This effectively reduces dyeing resistance, especially for fabrics with dense fiber structures.

* High-Temperature and High-Pressure Dyeing: A pressure control system maintains a high pressure environment of 0.4-0.6 MPa within the dye vat, combined with a high-pressure system. High temperatures of 100-140°C accelerate the movement and diffusion of dye molecules, shortening dyeing time while increasing dye fixation within the fiber.

* Post-dyeing: After dyeing, the dye liquor is recovered through a filtration system. The fabric undergoes subsequent steps within the dye vat, including cleaning, fixation, and dehydration, before being discharged through a fabric discharge device. This entire process ensures dye liquor recycling and continuous fabric processing.