| 摘要 |
A system for transporting a slurry (41) comprises a centrifugal pump connected in a conduit (18). The pump has a helical bladed rotor (30) mounted within a housing (20) provided with a vent (38). The bladed rotor creates a fluid vortex (40) with a central air core (42), the diameter of which varies to equalize the pressure in the housing with the back pressure in the conduit. The slurry is fed into an inlet port (26) of the pump and is carried by the fluid vortex to a pump outlet port (28). <IMAGE> |
