Flame-retardant master batch screening device

The utility model discloses a flame-retardant master batch screening device, which belongs to the field of screening and comprises a top feed port, two first-stage inclined screening plates are arranged on two sides of the bottom of the top feed port, a first-stage small-taper included angle discharge port is formed below the two first-stage inclined screening plates, and a first leaked material collecting channel is arranged on the backs of the two first-stage inclined screening plates; a first-stage conical material guide plate is arranged above the top feeding port, the included angle of the first-stage conical material guide plate faces the top feeding port, a gap is formed between the end of the first-stage conical material guide plate and the side wall of the top feeding port, and the first-stage conical material guide plate and the side wall of the top feeding port are connected through a connecting rod. A plurality of second-stage screening units which are arranged up and down are arranged below the f