Purifying device for aquaculture

The utility model provides a purification device for aquaculture, which belongs to the technical field of aquaculture and comprises an adjusting mechanism, a processing barrel is fixedly mounted on one side of the adjusting mechanism, a water pump is fixedly mounted at the top of one side, far away from the adjusting mechanism, of the processing barrel, and the water pump is communicated with the inside of the adjusting mechanism. A rotary cleaning mechanism is arranged at the top in the treatment cylinder and comprises a top plate; through the arrangement of the rotary cleaning mechanism, the mounting mechanism and the filter screen plate, the filter screen plate is inserted into the corresponding mounting groove, and the compression screw sleeve is tightened, so that the filter screen plate is fixed in the mounting ring, the mounting ring and the bottom of the filter screen plate are in close contact with the cleaning brush, and the filter screen plate is inserted into the treatment cylinder; the rotating m