Conical pre-sorting device of three-product dense medium cyclone

The utility model discloses a conical pre-separation device of a three-product dense medium cyclone, and belongs to the field of coal preparation equipment. The utility model discloses a conical pre-sorting device of a three-product dense medium cyclone. The device comprises a combined medium annular pipe, a pre-sorting device and a plurality of current-limiting regulators which are uniformly arranged at intervals, the medium drainage pipe is connected with a connecting pipe through a buffer connecting sleeve, the end, away from the buffer connecting sleeve, of the connecting pipe is connectedwith the flow limiting adjuster through a flange, and a first buffer spring is connected between the inner wall of the buffer connecting sleeve and the outer wall of the medium drainage pipe; according to the utility model, the first buffer spring in the buffer connecting sleeve is used for effective buffer; vibration is reduced, vibration damage at the joint is effectively avoided, the reinforcing angle steel detachably