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, depending on the volume of gas pumping 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 relieved the pressure pipe water swelling rubber sealing, a sealing device can be recovered, remove 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. Principle grouting grouting sealing liquid flowing through the core tube sealing device mine water sealing device, as the pressure rises inside the hose, prompting hose length becomes shorter, larger diameter water expansion sealing device until the drilling until complete contact with the walls of the hole, to achieve the object of the seal bore, when the pressure reaches a certain value, the pressure control valve to open the top sheet, start grouting. Sealing gas drainage 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!