PIPE POSITIVE FOR SAMOPROMYVKI bottom slope from the settled sediment

摘要

The utility model relates to hydraulic devices for washing silted pipes, and can be used in sewer systems, waterworks, etc. The apparatus 1 is a tube formed with annular corrugations 2 laid at an acute angle β = 30 ° ÷ 45 ° against the direction of flow stream. The tube 1 under the influence of the inclined corrugations 2 creates twin-screw thread capable remove settled sediment 3. The result is the maintenance of the helical nature of the flow stream. In addition, the inner surface of the tube 1 at the bottom part may be made with concrete 4. The utility model provides a simplified design, provided intensive organizations screw threads, and in the case when the bottom of the inner tube surface 1 of the concrete coating also provides protection against wear as a result of effect on the flow of the screw surface with abrasive properties. N.p.f. 1, 2 yl.