Foreign matter capturing mechanism and foreign matter capturing device

The utility model provides a foreign matter capturing mechanism and a foreign matter capturing device. The foreign matter capturing mechanism comprises a push rod and a capturing ring connected to the far end of the push rod, the capturing ring comprises two symmetrically-arranged buffering sections, the starting end of each buffering section is connected to the far end of the push rod, the tail end of each buffering section is relatively far away from the starting end, and when the capturing ring is in a completely-unfolded state, the tail end of each buffering section is connected to the far end of the push rod. The distance value between the corresponding parts of the two buffering sections is gradually increased from the starting end to the tail end, and the included angle between the tangent line of each part on the buffering sections and the axial direction of the push rod is gradually increased from the starting end to the tail end. According to the foreign matter capturing mechanism, the shape and the