Fishery wastewater purification device

The invention provides a fishery wastewater purification device, and relates to the field of wastewater purification. The rotating assembly is of a circular-tube-shaped structure, the stress part is made of stainless steel, the stress part is arranged in an inclined mode, one scraping assembly is fixed to the outer ends of every two supporting plates, each scraping assembly is of an arc-shaped plate-shaped structure, each scraping assembly is made of stainless steel, and the outer sides of the scraping assemblies are attached to the inner side of the rotating assembly. The sprayed water impacts the stress part, so that the stress part drives the rotating assembly to generate rotating power, the device can be used without being electrified, the energy loss is reduced, the device is used for preliminarily filtering wastewater by virtue of centrifugal force, the scraping assembly is used for removing filtered matters and attachments on the inner wall of the rotating assembly, and blockage caused by filtering and