Boiler feedwater pump DG85-80X11 Hunan Zhongda
Category:
mechanical equipment/pump/centrifugal pump
Model:
DG85-80
Brand:
Zhongda water pump
Retail Price
97,800.00USD
重量
kg
- Product Description
-
Description :
Overview of DG25-80 * 8 multi-stage boiler feedwater pump:
The DG type sub high pressure boiler feed pump is a horizontal multi-stage single suction segmental centrifugal pump. Its series of boiler feed pumps are energy-saving products specially designed for the renovation of new series industrial steam boilers. They are not only suitable for medium and low pressure boiler feed water, but also for high head water delivery in factories and cities.
The models of feedwater pumps for sub high pressure boilers are:
DG25-80*（3-12）
DG45-80*（3-12）
DG85-80*（3-12
DG150-100*（3-12）
DG45-120*（3-12）
DG120-130*（3-12）
DG150-130*（3-12）
DG200-100*（3-12）
DG280-100*（3-12）
Performance range of boiler feedwater pump:
Flow rate: Q=6-180m3/h
Head: H=50-660 m (medium low pressure) 409-1056 (secondary high pressure)
Structural type of DG25-80 * 8 multi-stage boiler feedwater pump:
The pump body and pump cover form the working chamber of the impeller, and there are pipe screw holes for installing vacuum and pressure gauges on the inlet and outlet flanges. The lower part of the pump body has pipe screw holes for discharging residual water.
The impeller is a single suction closed type, equipped with a balance plate to balance the majority of axial forces, and a thrust bearing to withstand the possible residual small amount of axial thrust. The arrangement of the bearings keeps the shaft in a stable pulling rod state. Before assembly, the impeller must undergo strict static balance verification to ensure smooth operation.
The pump shaft is supported by two Babbitt alloy sliding bearings, which are installed in the bearing body of the pump suspension and lubricated with thin oil.
A sealing ring is installed on the pump body, which can improve the volumetric efficiency of the pump and prevent high-pressure water from flowing back into the suction chamber, disrupting the inlet flow field and ensuring the suction performance of the water pump.
The shaft seal is generally a soft packing seal. When the water pump is working, a small amount of medium can be introduced to the packing box, or external cooling and lubricating water can be connected to serve as a water seal and cooling and lubricating function. According to the user's needs, the packing seal can be changed to a mechanical seal.
The pump casing can be disassembled axially at the axis, with the suction port of the DG type pump facing vertically upwards and the discharge port facing vertically upwards, perpendicular to the axis. From the direction of the drive end, the water pump rotates clockwise. According to user needs, it can also be produced to rotate counterclockwise. Users can specify this when placing an order.
The main component materials of DG25-80 * 8 multi-stage boiler feedwater pump are:
The general material is cast steel
Inlet and outlet sections: ZG230-450
Mid section: ZG230-450
Guide vane: ZG
Impeller: ZG230
Spindle: 40Cr
Sealing ring: QT450
Shaft sleeve: HT250
Balance disk: ZG2Cr13
Balance ring: Tin bronze
Rotation direction of DG25-80 * 8 multi-stage boiler feedwater pump:
From the motor end, the boiler feedwater pump rotates clockwise.
AfterSalesService :
Key words:- boiler feed pump
