Water circulation dyeing device

The utility model relates to a water circulation dyeing device which comprises a dyeing box, a circulating pipeline and a filter tank, a dyeing cavity and a recycling cavity are formed in the dyeing box, a spray head used for spraying dye liquor is arranged in the dyeing cavity, the circulating pipeline comprises a backflow pipe and a liquor supply pipe, the filter tank is arranged in the filter tank, and a non-return plate is arranged on the side, close to the backflow pipe, of the filter tank. A filter screen is arranged on one side close to the liquid supply pipe, dye liquor is sprayed to dyed objects through the nozzles in the dyeing cavity to dye the dyed objects, redundant dye liquor flows into the recovery cavity from the dyeing cavity through the through holes, the dye liquor in the recovery cavity flows into the filter tank through the return pipe, the dye liquor is filtered in the filter tank through the filter box, and finally batting is collected in the filter box. The dyeing machine has the advan