Compensating type slag blocking ring for rotary drilling rig platform

The utility model belongs to the technical field of dust prevention in rotary drilling rig operation, and particularly relates to a compensating type slag blocking ring for a rotary drilling rig platform. The compensating type slag blocking ring is characterized by comprises a group of annular rubber pads and a pressure plate, wherein the group of annular rubber pads is arranged on the upper part of a guide sleeve of the rotary drilling rig platform, and are sleeved outside a cone drilling rod layer by layer; the pressure plate is arranged on the upper part of the group of annular rubber pads; the annular surfaces of the annular rubber pads are slopes which are thicker on outer rings and thinner on inner rings. The compensating type slag blocking ring has the advantages of simple structure, convenience in installation and prevention of wear; the problem that the sight line of a driver is blocked since a large amount dust is sprayed outside the rotary drilling rig platform along the drilling rod during working is solved; meanwhile, environmental pollution caused by the rotary drilling rig platform is lowered, and the operation safety and health of workers are ensured.