▎ 摘　　要

NOVELTY - The utility model claims a cylinder sleeve cooling device of precise shunt, comprising a cylinder body; The precisely split cylinder sleeve cooling device prevents the cooling liquid in the upper cooling chamber from flowing to the lower cooling chamber through the flow blocking plug; the upper part of the cylinder sleeve is cooled more durable; the cooling liquid in the upper cooling chamber flows to the lower cooling chamber through the flow passage; and then the flow resistance fluid distributed in splayed shape is impacted by the downward liquid; so that the eight-character distributed resistance fluid are close to each other; reducing the flow area of the liquid, reducing the cooling liquid flowing to the lower cooling chamber speed, so that the cooling liquid can be cooled in the upper cooling chamber for a long time; it can reach the effect of improving the cooling effect of the upper part of the cylinder sleeve; the radiating area of the cylinder sleeve is increased by setting the radiating groove; primarily improving the radiating efficiency, then using high heat conducting performance of graphene by the radiating body, quickly absorbing the heat on the cylinder sleeve, and performing heat exchange with the cooling liquid accelerating heat dissipation, further improving the radiating efficiency of the cylinder sleeve, which can reach the effect of improving the radiating efficiency.