| 摘要 |
PURPOSE: To easily perform washing of the inside of a concrete force-feeding pipe which is performed after concrete placing work by a pumping car. CONSTITUTION: A cylindrical body 1 has both a closed end and a flange 2 for combining a concrete force-feeding pipe 21 on the other end. The inside of the cylindrical body 1 is partitioned into fine clearance 5 and a sponge chamber 6 by a partition plate 4. Stop valves 9, 10 and one-touch joints 11, 12 are arranged in ducts 7, 8 which communicate with the fine clearance 5 and the sponge chamber 6, respectively. The one-touch joints 11, 12 are combined with both a compressed air pipe and a water supply pipe. |
