Ejector pump

Abstract

To provide an ejector pump capable of efficiently sucking a deposit such as sediment accumulated on a bottom of rivers, purification plants and the like, with a simple constitution.SOLUTION: The ejector pump according to the present invention has: a compression pump for pressurizing and supplying fluid; and a suction device for receiving high-pressure fluid pressurized by the compression pump and generating a suction reaction. The suction device includes: plural injection nozzles for injecting the high-pressure fluid; a coupling member generating negative pressure for suction by injecting the high-pressure fluid from the injection nozzles; a suction pipe for sucking a conveyance material with the negative pressure for suction generated by the coupling member; and a discharge pipe for discharging the conveyance material sucked by the coupling member via the suction pipe to outside of the coupling member. The injection nozzle has: a coupling part connected to the other end of a fluidizing pipeline connected to the compression pump; and an injection part coupled with the coupling part, and provided in a manner that a tip part is inserted in the coupling member. The injection parts of the plural injection nozzles are provided in contact with each other.SELECTED DRAWING: Figure 1

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