Heavy medium cyclone capable of adjusting separation density on line

The utility model discloses a dense medium cyclone capable of adjusting separation density on line, which comprises a cyclone main body, an annular magnet exciting coil, an overflow pipe, a magnetic conducting bar and a cyclone feeding section, the cyclone main body comprises a cyclone column section, a cyclone upper cone section, a cyclone lower cone section and a cyclone bottom flow port, the annular magnet exciting coil is arranged at the top of the interior of the cyclone column section, the cyclone feeding section is tangent to the inner wall of the cyclone column section, the annular magnet exciting coil is located above the cyclone feeding section, and the cyclone lower cone section and the cyclone bottom flow opening are of an integrated structure. The magnetic field distribution and the radial magnetic field force in the cyclone are adjusted by adjusting the exciting current, so that the motion law of magnetite powder in the dense medium cyclone is magnetically regulated, the online regulation of the