HORIZONTAL MULTISTAGE CENTRIFUGAL PUMP Russian patent published in 1999 - IPC

FIELD: mechanical engineering; pumps. SUBSTANCE: pump has housing accommodating pump stages fitted on shaft and including impellers, inlet and outlet parts of guide vane assemblies which are in contact with each other over conical surface in periphery. Trapezium-shaped sealing members made of elastic material, for instance, rubber, are placed between inlet and outlet parts of guide vane assemblies and housing. Sliding bearing 8 placed between impeller hubs in inlet and outlet parts of guide vane assemblies include friction rings and additional ring. Sock absorbing pad made of elastic material is cured between rings. Vibration appearing at pump operation because of dynamic unbalancing of rotating units is killed by shock absorbing pads of sliding bearings and trapezium shaped sealing members. EFFECT: reduced pump vibration level, reduced labour input at pump repairs. 2 cl, 3 dwg