FIELD: power engineering.
SUBSTANCE: invention relates to industrial equipment. Smoke sucker impeller consists of central disc, two covers, hub blades and drive shaft. It differs from known designs in that hollow different-OD and ID rings are secured at sides of covers while ball rolling bodies are fitted therein. Spherical rolling bodies are fitted between the ring and rim edge.
EFFECT: ruled out unbalance of impellers.
3 dwg
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