| 摘要 |
A device for hydrodynamic effect on a coal seam comprises an air pressure plug, a device for generation of fluid pulses, a hydraulic power station connected through a back pressure valve to a pressure pipeline, an outlet pipe and connecting hoses. The device for generation of fluid pulses is made as folding-back hatch mounted on the outlet pipe, with shaped lever being in constant contact with the flank of radial cam which drive shaft is connected to the engine shaft. The cam flank is made by Archimedean spiral, and the drive shaft is provided with a spring pin. The device provides high efficiency of coal seam hydrotreating. |
