EJECTOR, MINUTE SOLID PIECE RECOVERING DEVICE AND FLUID CONVEYOR

摘要

PROBLEM TO BE SOLVED: To provide an ejector capable of generating a large negative pressure of a degree capable of sucking in a minute metal piece such as chips and conveying them when used as a drive source or the like of a fluid conveyor. SOLUTION: A jet emitting hole 15 generating the negative pressure by emitting a jet flow from an upstream side of a throat part 13 to a downstream side is formed inside a convergent-divergent nozzle 14 formed with the throat part 13 in between a suction opening 11 and a blowout opening 12. A pressure regulating hole 16 communicating a convergent-divergent nozzle 14 interior with a pressurized space not less the negative pressure generated by the jet flow and not more than a hydrostatic pressure of the jet flow is opened in a downstream side of the jet emitting hole 15.