Efficient cooling device for water-cooling system of refrigeration container

The invention provides an efficient cooling device for a water-cooling system of a refrigeration container, and belongs to the technical field of coolers. The efficient cooling device comprises a shell, an upper partition plate, a lower partition plate, a plurality of first circular pipes, a seawater inlet, a seawater outlet, a fresh water inlet, a fresh water outlet, a rotary shaft, a motor and aflow guiding mechanism; the upper partition plate and the lower partition plate divide the shell into an upper cavity, a cooling cavity and a lower cavity; the first circular pipes are arranged between the upper partition plate and the lower partition plate; the seawater inlet is formed in the shell and communicates with the upper cavity, and the seawater outlet is formed in the shell and communicates with the lower cavity; both the fresh water inlet and the fresh water outlet are formed in the shell and communicate with the cooling cavity; the rotary shaft is coaxially and rotationally arranged in the shell, and the