Preparation device of aliphatic aromatic water-soluble copolyester slurry

The utility model relates to the technical field of textile sizing agent preparation, and discloses an aliphatic aromatic water-soluble copolyester sizing agent preparation device which comprises a mixing tank, a through hole is formed in the upper end of the mixing tank, a rotating cylinder is rotationally sleeved with the through hole through a bearing, a dropwise adding pipe is fixedly sleeved with the rotating cylinder, and a vertical plate is further fixedly connected to the upper end of the mixing tank; the side wall of the vertical plate is fixedly connected with a liquid storage box, the lower end of the liquid storage box is hermetically communicated with the upper end of the dripping pipe through a rotary sealing joint, a partition plate is fixedly connected in the liquid storage box, one side of the lower end of the partition plate is integrally communicated with a liquid outlet cylinder, a sealing box is further fixedly connected in the liquid storage box, and the inner wall of the vertically oppo