1、適用范圍 Product application
FKSW-63/4, FKSW-73/4 hydraulic pressure type hole sealing device for gas drainage is gas drainage and hole sealing device used under coal well self developed by our company; it is applied to drain gas before coal mining, reduce the gas volume and pressure in coal seam, which is mainly used for gas drainage hole, and use water pressure to expand the rubber and to realize hole sealing.
It’s easy and convenient to use, safe and reliable, which can be used for many times; it is the ideal equipment used in gas drainage in coal seam.
二、工作原理及使用方法Method of application
Connect the high pressure expansion pipe of hole sealing device to the static pressure water or high pressure water, and insert hole sealing device into the coal seam to be drained; open the water valve till the hole sealing water pressure is over 1MPa, and the rubber pipe of hole sealing device will expand to seal the hole, and carry on drainage through drainage core pipe from the drainage pump; open the water valve when drainage is finished to let the water in pipe out, and the hole sealing device will get back to its shape; take out the hole sealing device, and drainage work is finished.
(Device of different lengths can be customized, and there are three normal sizes 1.0m, 1.5m and 2.0m.)
規格 Specification mm
External diameter after expansion mm
適用孔徑 Applicable aperturemm
Working pressure Mpa
Minimum explosion pressure Mpa
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