Fluid centrifugal separation device

The invention relates to a fluid centrifugal separation device which comprises a centrifugal separation cavity, a heavy component retention cavity 20, a heavy component sealing cavity, a fluid inlet, a heavy component output port and a light component output port. The centrifugal separation cavity, the heavy component indwelling cavity and the heavy component sealing cavity are sequentially arranged from inside to outside from the rotating center, the centrifugal separation cavity is communicated with the heavy component indwelling cavity through an indwelling cavity inlet, and the heavy component indwelling cavity is communicated with the heavy component sealing cavity through an indwelling cavity outlet; the heavy component sealing cavity is communicated with the heavy component output port, and the centrifugal separation cavity is communicated with the fluid inlet and the light component output port. The rotary centrifugal structure has the beneficial effects that the rotary centrifugal structure with the