Coal seam drilling / reaming hole mouth blowout prevention dust removal device
By combining the sealing sleeve with the blowout preventer, the problem of coal slag and gas leakage during drilling/reaming operations was solved, achieving a safe and efficient construction environment and reducing dust concentration and gas risk.
CN224532675UActive Publication Date: 2026-07-21SHANXI GAOHE ENERGY
View PDF 0 Cites 0 Cited by
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI GAOHE ENERGY
- Filing Date
- 2025-09-28
- Publication Date
- 2026-07-21
AI Technical Summary
Technical Problem
In existing coal seam drilling/reaming operations, the sleeve of the blowout preventer is not properly sealed to the borehole wall, causing a mixture of coal slag, dust, and gas to gush out, endangering the safety of the construction site and triggering a gas alarm.
Method used
The design combines sealing expansion with blowout prevention chamber. The sealing sleeve is fixed by friction with the drilled hole, and combined with spray dust suppression, it prevents coal slag and gas leakage, and reduces dust concentration through the spray mechanism.
Benefits of technology
It effectively prevents coal slag and gas leakage, reduces the risk of gas exceeding limits, ensures construction safety, and improves construction efficiency and environmental cleanliness.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224532675U_ABST
Abstract
The utility model belongs to the coal mine underground wear -and -tear borehole drilling technology field especially relates to a coal seam drilling / reaming hole mouth blowout prevention dust removal device, including the hole -in -place hole sealing sleeve and the blowout prevention dust removal cavity in the hole mouth outside, the blowout prevention dust removal cavity is cubic cavity, the upper and lower parts of blowout prevention dust removal cavity are equipped with upper connector, lower connector respectively, the drill rod of drilling machine passes through lower connector and cavity and is connected with hole sealing sleeve at upper connector after, the left and right sides of blowout prevention dust removal cavity are equipped with the residue outlet, the extraction mouth respectively, be equipped with the spray mechanism in the blowout prevention dust removal cavity, this device effectively blocked the coal residue leakage along the hole wall gap in hole mouth, improved the dust removal efficiency when drilling / reaming, improved the construction environment of underground wear -and -tear borehole operation site and roadway, reduced the security risk of gas overflow.
Need to check novelty before this filing date? Find Prior Art