Filtering device for blue-green algae

The invention discloses a filtering device for blue-green algae in the field. The device comprises a filtering seat, a driving servo motor, a water tank, a rotary core frame, a middle rotating shaft,a rotating base seat, a blue-green algae filtering cloth, a rubber scraping blade, an anchoring frame and a PLC; the filtering seat is provided with a water flow channel, and the upper end of the water flow channel is covered with a filter net screen with a screen-shaped structure; the rotary seat is rotatably installed in the middle position of the water flow channel of the filtering seat, and the part, located at the water flow channel, of the rotary seat is provided with a filter sieve cylinder; the rotary core frame is a revolution solid structure and coaxially sleeves the middle rotatingshaft, the middle rotating shaft can be rotatably inserted in the rotating base seat around a shaft, and the middle rotating shaft is further provided with a rotary driving mechanism capable of driving the middle rotating shaf