Divided-flow type dust catcher

The utility model relates to a split-flow type dust catcher which comprises a body, universal trundles, supporting foot seats and a three-layer type filtering structure in the body. The lower-layer structure is used as a first-stage dust trapping region; the middle layer structure is used for effectively and fully capturing dust by utilizing a twice filtering mode that dispersed airflow is generated by the position and distance difference between the air guide port and the shunting air guide port and the airflow enters and exits from the filtering material; the upper-layer structure is the same as the middle-layer structure, and the dust trapping effect is enhanced by utilizing a twice filtering mode that dispersed airflow is generated by the position and distance difference between the shunting air guide port and the exhaust air guide port and the airflow enters and exits the filtering material; the universal trundles facilitate movement of the body; the supporting footstands can support the body and adjust