| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a jet pump capable of eliminating jamming or pulsation and stably generating a negative pressure even though its structure is simple and capable of improving efficiency of various works such as suction or transportation and the like.SOLUTION: High pressure water supplied from a high pressure water supplying source 2 is injected from a plurality of injection nozzles 3 as a jet flow 37, the injected jet flow 37 is once converged on an axis C of a straight pipe portion 22 of a negative pressure generating pipe 4, and after this operation, the flow is fully widened in the straight pipe portion 22, a working negative pressure is generated at more upstream side of the jet stream 37 than the widened flow, the generated working negative pressure is applied to a suction pipe 5 that is arranged concentrically around the negative pressure generating pipe 4 and upstream side of the negative pressure generating pipe 4 to suck the flow feeding material including solid cluster into a sucking port 43 of the suction pipe 5, the flow feeding material sucked into the suction pipe 5 is pushed into the negative pressure generating pipe 4 while the flow feeding material is being enclosed by the converging jet stream 37 and guided by the guide part 13 having a slant surface 12 of angle substantially along a fixing angle of the injection nozzle 3 and is fed in fluid.</p> |
