| 摘要 |
<p>The present invention relates to a method for cleaning the inner surfaces of pipes which comprises displacing a cleaning member in the pipe cavity at a speed of at least 1000 rev/min while simultaneously feeding the cavity with a liquid. The body of the cleaning member rotates clockwise about its axis while roller heads of said member rotate anticlockwise along their axis. Displacement of the cleaning member is performed along a helical line in order to form helical grooves in the deposit that grow wider and deeper during said displacement and that further break apart when the working surface of the rollers of roller heads engage the deposit. A cleaning device comprises a body having its end fitted with at least two roller heads in the form of truncated cones, said cones comprising rollers with a gradually increasing diameter. The rollers in each head are mounted step-wise, their number in the steps being equal to the number of heads.</p> |
