Yarn tension adjusting device of circular weaving machine

The utility model belongs to the technical field of yarn tension equipment, and discloses a yarn tension adjusting device of a circular weaving machine, which comprises a plate frame, and a circular shaft is fixedly connected to the top of the plate frame. A worker can move a semicircular connecting rod left and right around a plate frame, so that a bolt drives a square plate and a sliding ball to move in a deep groove and the inner wall of an outer sliding groove to adjust the proper height, and yarn tension adjustment is contracted; a worker anticlockwise rotates a bolt to drive a square plate to tightly clamp the outer wall of an outer sliding groove to reach a limiting and fixing state, and then the loom is started to work, so that a thread body of the loom is pressed by the outer surface of a thread pressing device to work; when the yarn is loosened, the bolt is screwed clockwise to be pushed towards one side of the sliding bead, the square plate moves, the bolt and the square plate can be moved, and the