Sealing device for drilling holes for coalbed methane drainage and coal seam water injection 1. Hole sealer for gas drainage 1. Application: water injection into coal body and gas drainage. Function: 1. Moisture enters the coal body, releasing part of gas, effectively reducing the gas content in the coal body. 2. After water injection achieves the effect, dust can be reduced by more than 8%, the working environment of workers can be improved, and dust explosion accidents can be eliminated. 3, wet coal, reduce initiating explosive device products, reduce costs and increase workers' sense of security; 4, the outburst prevention effect is achieved, the ground stress and gas pressure are effectively released, and the occurrence of outburst accidents during coal cutting is eliminated; 5. It solves the problem of gas overrun when cutting coal mine and drilling outburst prevention, and can effectively prevent coal and gas outburst and explosion. Structure: The hole sealer consists of high-pressure rubber expansion hose, intermediate steel pipe, sliding sealing joint and pressure injection joint. IV. Precautions: It is forbidden to operate with pressure when sending and inserting hole sealers and recycling hole sealers. 2. Coal seam water injection hole sealer 1. Uses: coal body water injection, dust suppression, coal pressure reduction, coal cracking, gas emission, etc. Function: 1. Moisture enters the coal body, releasing part of gas, effectively reducing the gas content in the coal body. 2. After water injection achieves the effect, dust can be reduced by more than 8%, the working environment of workers can be improved, and dust explosion accidents can be eliminated. 3, wet coal, reduce initiating explosive device products, reduce costs and increase workers' sense of security; 4, high-pressure water injection, crushing coal, reducing pyrotechnic products, reducing costs and increasing workers' sense of security. 5. Using hole sealer to break coal can effectively prevent coal and gas outburst and explosion. Structure: The hole sealer consists of high-pressure rubber expansion hose, safety valve and quick connector. IV. Precautions: 1. It is forbidden to operate with pressure when sending and inserting hole sealers and recycling hole sealers. 2. No one is allowed to work directly in front of the hole sealer.