DG horizontal multi-stage boiler feed pump structure description

DG pump horizontal type multi-stage boiler feed pump mainly by the pump housing, rotor, bearings, pump seal, balance mechanism, shaft seal and cooling and other parts, between the various parts is divided into specific parts composition. If you do not know much about the DG horizontal multi-stage boiler feed pump, the following is a description of its structure. DG horizontal multi-stage boiler feed pump structure description 1, the pump casing part of the pump housing mainly by the bearing body, the front section, the middle section, the rear section, the guide vane and other screws connected into a whole, the front suction inlet midline, the rear section Spit outlet midline and horizontal. 2, part of the rotor rotor mainly consists of bearings and mounted on the shaft of the impeller, bushings, balance disc and other components. The shaft parts are tightened with plain keys and sleeve nuts to make them integral with the shaft. The entire rotor is supported on the pump housing by a plain bearing on both ends. The number of impellers in the rotor section depends on the pump stage. 3, the bearing part of the pump for the rolling bearing, the bearing does not withstand the axial force. The pump should allow the rotor section to swim axially in the pump housing while the pump is being lubricated with thin oil. 4, the pump seal Pump front, middle, back sealing between the surface are made of molybdenum disulfide grease seal between the rotor part and the fixed part by the seal ring, guide vane sets, packing seal, seal ring and guide vane Set of wear has affected the pump work and performance should be promptly replaced. 5, balance mechanism Balanced by the balance ring, balance plate, balance sleeve and other components, balance mechanism used to balance the pump axial force. 6, shaft seal and cooling DG horizontal multi-stage boiler feed pump, the shaft seal must be connected to seal the water. Water seal used in external water. When the temperature of the medium to be conveyed is higher than 80 ° C, the cooling water must be supplied to the water-cooled packing gland and the shaft seal cooling chamber. Cooling water is room temperature water. External water seal water and the same water being transported, but the temperature is different, the cooling water pressure 1.5-3Kg / cm? 2; water seal water pressure pressure is higher than the sealed chamber pressure 0.5-1.5Kg / cm ;. Pump water seal water and cooling water pipeline interface, see the label attached to the pump, the pipeline interface along the axial position. Extended reading: China Construction Water Exhibition water pump manufacturers rankings ptc exhibition motor top ten brands pump valve pipe fittings Show Information Industry Internet (Xiamen) Technology Co., Ltd. Asia Pump Network Editor: He Duanhui (QQ / WeChat:) http: // mj .liuti.cn / (Service Hotline:)

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