1. use: coal water injection, drainage of gas.

2. function:

1, moisture enters the coal body, releases part of the gas, and effectively reduces the gas content of the coal body;

2. After water injection achieves the effect, dust can be reduced by more than 80%, the working environment of workers can be improved, and dust explosion accidents can be prevented.

3, moisten coal body, prevent spontaneous combustion of coal body;

4. After adopting the advanced discharge drilling and working face drainage system, the gas emission and cuttings of the discharge drilling are obviously increased, which has a good outburst prevention effect, effectively releases the ground stress and gas pressure, and prevents the occurrence of sudden accidents during coal cutting.

5, solved the problem of gas overrun during coal cutting and anti-outburst drilling, it can effectively prevent coal and gas outburst and explosion.

3. structure: hole sealer consists of high-pressure rubber expansion hose, intermediate copper pipe, sliding seal joint and injection joint.

4. technical parameters:

sealing diameter: 65-150mm (can be processed according to user requirements)

working pressure: 1-60Mpa (can be processed according to user requirements)

safety valve starting pressure: 0.4-0.5Mpa

working flow rate: 5-8 tons of water can be injected per hour, gas drainage amount, depending on concentration and pressure

hole sealing depth: 0.5 m-3m

hose expansion coefficient: 60-100%

5. usage method and precautions:

, using gas drainage hole sealer is fast and convenient. It is only necessary to connect the waterway or air pump at the operation site with the pressure injection joint of the hole sealer, and the intermediate steel pipe with the gas discharge pipeline. The hole sealer is completely inserted into the borehole. Under a certain pressure, the hole sealer hose expands to realize hole sealing, water injection or gas drainage.

2. The hole sealer for gas drainage can be used repeatedly for several times. After water injection or gas drainage is finished, the hole sealer can be restored to its original state and the hole sealer can be taken out.

3. It is forbidden to operate under pressure by inserting hole sealer and recovering hole sealer.