Sea sand desalination and fine sand recovery device

The utility model relates to the technical field of sea sand recovery, in particular to a sea sand desalination and fine sand recovery device which comprises a filter box, a feeding nozzle and a box door. Two filter cartridges are fixedly connected to the interior of the filter box, the feeding nozzle is arranged at the top of the filter box, the bottom end of the feeding nozzle is communicated with a first branch pipe and a second branch pipe respectively, the first branch pipe and the second branch pipe are communicated with the upper ends of the two filter cartridges respectively, bag filters are arranged in the filter cartridges, and the filter cartridges are arranged in the bag filters. When a saturated bag type filter is replaced and cleaned and the first branch flow pipe or the second branch flow pipe is closed through the valve, the two filter cartridges which are not closed can be continuously used, fine sand in sea sand is recycled, and the filter cartridge is convenient to clean and clean. And the