Water-cooled jacket of rotary kiln

The utility model provides a water-cooled jacket of a rotary kiln, and relates to the technical field of rotary kilns. The device comprises a sleeve body structure, the two ends of the sleeve body structure are connected with a rotary kiln and a feeding structure respectively, the sleeve body structure comprises an inner barrel, an outer barrel, a water inlet part and a water outlet part, the outer barrel is arranged on the outer side of the inner barrel, a moving cavity for materials to move is formed in the inner barrel, and a containing cavity for water to flow is defined by the inner barrel and the outer barrel. A partition plate assembly is arranged in the containing cavity, the containing cavity is defined by the inner barrel and the outer barrel, the actual water passing space is smaller, the partition plate assembly is matched, the water inlet amount is effectively reduced, the water inlet parts and the water outlet parts are communicated with the containing cavity, the number of the water inlet parts