FIELD: non-positive displacement pumps.
SUBSTANCE: stage comprises blades mounted in the metallic part of the ring bandage by means of a lock mounted in the inner metallic ring (2) that is set inside the outer ring (1) made of a composite material. The lock consists of head (4) secured to bushing (5) that goes into flexible tubs (7) that are ended with hooks (6) overlapping blade (3) and inner metallic ring (2).
EFFECT: simplified structure and enhanced reliability.
3 dwg
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