Cooling roller with rapid cooling function

The utility model discloses a cooling roller capable of cooling quickly, which comprises two hollow seats, bearings are embedded on one sides of the hollow seats, a liquid inlet pipe is inserted in one bearing, a liquid outlet pipe is inserted in the other bearing, an outer temperature guide cylinder is sleeved between the two hollow seats, a cooling liquid shell is arranged in the outer temperature guide cylinder, and a cooling liquid outlet pipe is arranged in the cooling liquid shell. The liquid inlet pipe and the liquid outlet pipe are connected with the cooling liquid shell in an inserted mode, two hollowed-out frames are fixedly connected between the circumferential inner walls of the cooling liquid shell, a center shell is connected between the two hollowed-out frames in an inserted mode, a plurality of inclined face covers are fixedly connected to the circumferential inner walls of the cooling liquid shell, and the inclined face covers are arranged around the center shell. The end, close to the liquid