Cyclone separation device

The invention relates to the technical field of material separation, and discloses a cyclone separation device which comprises a cyclone body internally provided with a cyclone separation cavity, an overflow pipe and a short-circuit flow suppression pipe arranged outside the overflow pipe in a sleeving mode and located in the cyclone separation cavity. The side wall of the rotational flow main body is provided with a rotational flow inlet capable of enabling a to-be-separated raw material to enter the rotational flow separation cavity along the tangential direction of the rotational flow main body, the bottom wall of the rotational flow main body is provided with a bottom outlet for discharging a separated first material, and the top wall of the rotational flow main body is provided with a top outlet; the overflow pipe is inserted into the top outlet and is used for discharging the separated second material; the short-circuit flow suppression pipe is provided with a short-circuit flow inlet allowing short-cir