| 摘要 |
An eductor mixing device (10) has a main body or housing (28) of a generally cylindrical shape and an inner tube (42) for one component to be mixed with a liquid is mounted in main body (28) with a vortex chamber (56) formed in an annulus between the main body (28) and the inlet flow tube (42). Pressurized liquid enters the vortex chamber through a generally rectangular entrance opening (36) along an arcuate surface (42) which smoothly merges with the cylindrical surface (30) of the main body or housing (28). A liquid in a swirling motion moves in a descending helical path about inner tube (42) and passes through a gap G between coaxial frusto-conical surfaces (55) and (68) of the converging inner nozzle (52) of the inner tube (42) and an outer coaxial liquid nozzle (60) of diffuser ring (58). A high velocity is created by the swirling liquid for exerting a suction or negative pressure at the lower end of inner nozzle (52) to draw the component to be mixed, such as a particulate material, into the swirling liquid stream where the swirling liquid and particulate material form a strong vortex to create a slurry in a minimal travel distance after passing inner converging nozzle (52) of particulate inner tube (42).
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