Polyester yarn cleaning device

The utility model discloses a polyester yarn cleaning device. The polyester yarn cleaning device comprises a box body, a drying mechanism and a cleaning mechanism; the drying mechanism comprises sleeving boxes, the two sleeving boxes are fixedly connected in the box body in a sleeving mode, springs are fixedly connected in the two sleeving boxes, the other ends of the two springs are fixedly connected to connecting plates, the other ends of the two connecting plates penetrate through the sleeving boxes and extend to the outside, U-shaped plates are fixedly connected to the two connecting plates, and the U-shaped plates are fixedly connected to the two ends of the box body. The two inner walls of the two U-shaped plates are rotationally connected with the two ends of two rotating shafts correspondingly. Two extrusion rollers are pushed towards the two sides through polyester yarn, connecting plates on the extrusion rollers move into a sleeving box, telescopic rods contract, springs are compressed, the connecti