Large-batch automatic filtering and grading device for zooplankton

The utility model relates to the technical field of odontobutis obscura fry cultivation, in particular to a zooplankter large-batch automatic filtering and grading device which comprises a feeding barrel, a first-stage filtering barrel, a second-stage filtering barrel, a rinsing barrel and a material taking barrel, and communicating assemblies are fixedly connected among the feeding barrel, the first-stage filtering barrel, the second-stage filtering barrel, the rinsing barrel and the material taking barrel. The feeding barrel, the first-stage filtering barrel, the second-stage filtering barrel, the rinsing barrel and the material taking barrel are communicated with one another through communication assemblies, drainage holes are formed in the bottoms of the first-stage filtering barrel, the second-stage filtering barrel and the rinsing barrel, a first-stage filtering net is fixedly connected into the first-stage filtering barrel, a second-stage filtering net is fixedly connected into the second-stage filteri