Optical fiber coating cooling device

The invention provides an optical fiber coating and cooling device, and belongs to the technical field of optical fiber processing.The optical fiber coating and cooling device comprises a fixing structure, a primary coating body, a cooling cylinder and a secondary coating body which are sequentially arranged from top to bottom, the cooling cylinder is arranged at the bottom of the primary coating body in a sleeving mode, and the primary coating body is in sliding connection with the cooling cylinder in the axial direction; the volume of the first cooling cavity in the cooling cylinder is changed by adjusting the height of the cooling cylinder; a flow blocking cavity is formed in the secondary coating body, the lower end of the flow blocking cavity is communicated with a spraying cover, the spraying cover rotates around a center shaft, and a plurality of spraying holes are formed in the inner wall of the spraying cover to spray materials to optical fibers passing through the spraying cover. The cured bare opti