Overview: DG-type sub-high pressure boiler feed pump as sub-high pressure boiler feed water or other water supply purposes, the transmission medium temperature does not exceed 160℃Flow rate: Q=36~180m³/hHead: H:=409~1056mStructure:This pump is a multi-stage centrifugal pump casing section. The inlet and outlet are vertically upward. Front, middle and rear section connected with the wear bar into one, each section depends mainly on the joint surface between the stationary seal the metal surface outside, and with O-type rubber ring as a secondary seal.Seal:Sub-high pressure boiler feed pump used soft packing seal or mechanical seal according to user's needs. Packing gland, packing chamber cooled with cooling water. With the seal at the sleeve can be replaced to protect the shaft. Bearing and balancing devices: Sbu-high pressure pump rotor from the pump to support both ends of the sliding bearings. Thin oil lubrication, and cooled with circulating water. Balancing disk is used for balancing of rotor axial thrust. Use return pipe between the balance chamber and front section.Transmission:Sub-high pressure boiler feed water pump driven by motor through flexible coupling. Direction from the drive, the pump is clockwise.Materials:front section---------high quality carbon steelmiddle section--------high quality carbon steel back section ---------high quality carbon steel guide vane -----------high quality carbon steel impeller ----------------high quality carbon steel or stainless steel shaft sleeve ----------high quality carbon steel impeller gear set ---stainless steel guide vane set -----stainless steel balance plate -------stainless steel balance disk ---------stainless steel balancing sleeve----stainless steel balance disc -----------chrome steel balance sleeve --------chrome steel
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