Waterless dyeing device and method for bobbin yarn, and product

A waterless dyeing device for cone yarn comprising:

• a dye autoclave;
• a dyeing autoclave;
• a recycle autoclave;
• a dyeing circulation system that is in fluid communication with the dye autoclave, the dyeing autoclave and the recycle autoclave;
• a cone yarn inlet formed on the top of the dyeing autoclave, which is provided with a sealing cap;
• a cone yarn center shaft vertically disposed at the center inside the dyeing autoclave, which is a perforated outlet tube with fluid discharge holes opened on the side wall;
• an intake pipe disposed on the bottom of the dyeing autoclave which is in communication with the cone yarn center shaft;
• a dyeing autoclave outlet disposed on the dyeing autoclave;
• and
• a CO2 container, a pressure pump, a circulation pump and conduits which are included in the dyeing circulation system;
• wherein the dye autoclave includes three or more dye containers disposed in parallel, and an intake disposed on the bottom of each of the dye containers has a valve configured to control fluid amount;
• the CO2 container is respectively connected to each of the valves on the intakes of the dye containers through conduits and an outlet of each of the dye containers are in communication with the intake pipe of the dyeing autoclave through conduits;
• the dyeing autoclave outlet is in communication with a circulation pump through conduits, and the circulation pump is respectively connected to each of the valves on the intakes of each of the dye containers;
• a branch joint of the dyeing autoclave outlet is connected to the recycle autoclave through conduits and over a pressure release valve, the recycle autoclave is connected to a condenser through conduits, the condenser is in communication with the CO2 container, and the CO2 container is connected to the pressure pump;
• each of the dye containers is provided with a heating jacket and electrical heating wires are wound on the conduits connected to the dye containers;
• wherein the dyeing autoclave is a cylindrical autoclave vertically placed, and a self-sealing coil is disposed on the sealing cap;
• a sealing ring underneath cone yarn surrounding the cone yarn center shaft is disposed on the bottom surface inside the dyeing autoclave, the dyeing autoclave outlet is disposed on the upper portion of the side wall of the dyeing autoclave;
• and
• wherein the recycle autoclave is an elongated cylindrical autoclave, and within which a three-dimensional duplex strainer is arranged.