| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent abrasion of a flanged straight pipe provided on a suction port of a tank in a suction vehicle which sucks and recovers sewage water into a tank. <P>SOLUTION: A suction device comprises: a tank 5(6) for sucking and recovering a recovery object through a suction port 51; a suction pump 21 decompressing air in the tank 5(6); a flanged straight pipe 52 provided at the suction port 51 of the tank 5(6); and a pipe coupling 33 connected to the flanged straight pipe 52. The pipe coupling 33 has: a hose connection part 332; a bent pipe part 331 connected to the downstream side of the hose connection part 332; a straight pipe part 333 connected to the downstream of the bent pipe part 331; and a pipe coupling side flange 334 formed at the downstream side end of the bent pipe part 331 or on the periphery of the intermediate part of the straight pipe part 333 and connected to a flange 521 of the flanged straight pipe 52. The straight pipe part 333 of the pipe coupling 33 is inserted into the flanged straight pipe 52 provided at the suction port 51 and covers the inner peripheral surface of the flanged straight pipe 52. <P>COPYRIGHT: (C)2012,JPO&INPIT |
