Rotational flow biofilter

The utility model discloses a rotational flow biofilter which comprises a cylinder body, a water inlet sampling assembly and a water outlet sampling assembly, and the cylinder body is provided with a dismounting assembly which is convenient for cleaning biological stuffing. The dismounting assembly comprises a bearing cylinder, a filling basket, a plurality of blocking nets, a cylinder cover, a first magnetic ring, a second magnetic ring, a first rotating rod, a plurality of first stirring paddles, a door-shaped plate, a servo motor, a first gear, a second rotating rod, a plurality of second stirring paddles and a second gear, the bearing cylinder is fixedly installed on the inner wall of the cylinder body, and the filling basket is arranged in the bearing cylinder; the multiple blocking nets are fixedly installed on the filler basket, the barrel cover is arranged at the top of the barrel body, the first magnetic ring is fixedly installed at the bottom of the barrel cover, the second magnetic ring is arranged