High-temperature high-pressure jig dyeing machine spindle temperature control system

The utility model relates to a main shaft temperature control system of a high-temperature high-pressure jig dyeing machine. The jig dyeing machine comprises a jig dyeing machine barrel, two main shafts are arranged in the cylinder body in the horizontal direction at an interval; roller bodies rotating along with the two main shafts are respectively sleeved outside the two main shafts; the rollerbody is cylindrical, a cavity for containing hot water is formed between the inner wall of the roller body and the main shaft, annular inner supporting pieces are installed at the two ends in the cavity in the radial direction, through holes for water flow to pass through are formed in the surface of the cavity, one end of the cavity is connected with an outlet of the water inlet pipe, and a circle of water blocking pieces are installed at the joint in the circumferential direction of the end face of the roller body. An inner tank body is arranged in the cylinder body below the roller body, hot water is contained in a