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QDG high efficiency boiler multistage pump

产品型号:

Keywords:

Blow down pump


An overview of the

QDG pump is a single-suction, multi-stage, segmental centrifugal clean water pump, which is suitable for medium and low pressure furnace water supply, factory and urban high lift water transmission. The temperature of the conveying medium is-20 °C ~ 105 °C, and the temperature of the conveying medium of the two pumps is-20 °C ~ 150 °C. The pump inlet pressure shall not exceed 0.6 MPa.
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Product Details


Parameter range : 
 

Flow Q : 6-600m / m 
 
Yang Cheng H : 17-650m 
 
 
 
Model Description : 
 

DG25-50 × 3 
 
DG - Single suction, multi-stage boiler feed pump 
 
Design point flow ( m3 / h ) of 25-pump) 
 
The design point of 50 one pump single stage head ( m ) 
 
3 one pump series 
 
 
 
Structure type : 
 

QDG pump is a horizontal, single suction, multi-stage centrifugal pump. The inlet and outlet of the pump are vertically upward, and the tension screw connects the suction section, middle section and spitting section of the pump into one. 
 
The pump rotor is composed of impeller, balance plate and other parts mounted on the shaft. The whole rotor is supported by sliding bearings at both ends of the pump shaft. The bearing is lubricated with lubricating oil and cooled with circulating water. The axial force of the rotor is balanced by the balance disc. 
 
3. The shaft seal adopts packing seal or mechanical seal. A sealing function is arranged at both ends of the shaft, which is equipped with soft packing or mechanical seal. The water with certain pressure enters the sealing function to seal and cool. A replaceable sleeve is installed at the shaft seal to protect the pump shaft. The pump is directly driven by the motor through the elastic coupling. From the motor end, the pump rotates clockwise.

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