Features: 1, moisture into the coal, the release of part of the gas, effectively reducing the gas content of coal. 2, after the water to achieve the effect, can be reduced more than 80% of dust, improving workers' working environment, to prevent dust explosions. Third, the structure: sealing rubber expansion consists of a high pressure hose, pressure relief valves, quick connector components. Fourth, the technical parameters: Sealing diameter: 30 ~ 120mm (according to user needs processing) Working pressure: 1 ~ 8MPa (according to user needs processing) work flow: water 4 tons per hour to 5 tons tunnel injection sealing device, Gas drainage volume depending on the concentration and pressure. Hose expansion coefficient: 60% five, using the methods and precautions: 1, using coal seam water sealing device quick and easy. Just the job site waterways and sealing device connectivity, the sealing device is fully inserted into the borehole at a certain pressure, sealing device hose expansion to achieve sealing, water breaking coal. 2, seam sealing water can be reused several times after the injection pressure is removed to restore the rubber sealing device injection sealing device, remove the sealing device. 3, sending plug sealing device and recycling storage hole is prohibited under pressure operation. 4, when the sealing is not allowed to work in front of people jobs. Coal is split system in coal mine gas drainage water sealing device, virgin coal seams of coal seam water through rock EHV, injection pressure can exceed 40MPA, implementation will not split seam bursting, the split seam gas gas pumping out. Water into the coal seam to reduce coal dust, to prevent gas and coal dust explosion, to bring the production of safety protection. Rubber sealing expansion pipe water, a water sealing device, Bo-Bo-rubber provided by Hengshui Rubber Products Limited. Hengshui Bo-Rubber Products Co., Ltd. (www.jxboguang.com/) strong, credible, Hebei Hengshui transportation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the Bo-Rubber and you hand into the brilliant, for a better future!