FIELD: engines and pumps.
SUBSTANCE: centrifugal screw pump comprises a letdown screw and centrifugal wheels mounted in series on a single drive shaft, as well as a spiral branch. The hubs of screw and centrifugal wheels have the form of a truncated cone. The taper angle of the screw wheel hub is close to the angle of the taper angle of the centrifugal wheel hub. The rear edge of the screw wheel hub overlaps the front end of the centrifugal wheel hub. The centrifugal wheel is formed as a gradually unfolding in the circumferential direction of the annular channel.
EFFECT: ensuring the continuous movement of a high viscosity medium, while avoiding the formation of stagnant zones and adhesions by finding the optimally simple configurations of the main structural elements and building their joints without the use of complex and expensive technological processes.
4 cl, 3 dwg
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