DG horizontal multistage centrifugal pump

Description of DG type horizontal multistage centrifugal pump:
DG type horizontal multi-stage centrifugal pump adopted country it is recommended to use hydraulic model of high efficiency and energy saving products.With high efficiency, wide range of performance, safety and smooth running, low noise, long service life, easy installation and maintenance, etc.
DG type horizontal multi-stage centrifugal pump, suitable for medium and low pressure boiler water supply, factory, high lift water city.For conveying water or similar physical and chemical properties Yu Qingshui liquid, the medium temperature of the two kinds of pump – 20 ℃ ~ 105 ℃ (except DG85-80, 200 dg43, this two kinds of pump medium temperature is 20 ℃ ~ 105 ℃) -.In the pump inlet pressure must not more than 0.59 MPa (6 KGF/cm2).
DG type horizontal multistage centrifugal pump structure:
DG type horizontal multi-stage centrifugal pump inlet and outlet are vertical, by tightening bolts will pump water period, the middle, water, pump shell parts such as bearing body connected into a whole.Choose according to pump lift pump series.
This series of multistage pump rotor parts is mainly composed of shaft and installed on the shaft of the impeller, shaft sleeve, balance disc and other parts, including quantity according to the series of the pump impeller.Shaft parts with the flat key and shaft nut fastening and shaft etc.The rotor consists of rolling bearings on both ends or sliding bearing.Bearing according to the different models, are not under axial force, and the axial force by the balancing disc.Allows the rotor in the operation of the pump in the pump shell axial float, cannot adopt the centripetal ball bearings.Rolling bearings with grease lubrication, sliding bearing with thin oil lubrication, and the self lubricating oil ring, circulating water cooling.
Pump inlet section, middle/water sealing surface adopt molybdenum disulfide grease seal, between rotor part and fixed part is equipped with seal, guide vane, etc, when the seal ring and the degree of wear of guide vane set had influence on the performance of the pump work shall be replaced.
Shaft seal form has two kinds of mechanical seals and packing seal.Pump using packing seal, the location of the packing ring placed to the right, the tightness of packing must be appropriate, with liquid can drip seeps advisable.
DG type horizontal multi-stage centrifugal pump parameters:
Flow rate Q 3.75 ~ 720 m3 / h
Lift H 50 ~ 1500 m
DG type horizontal multistage centrifugal pump type:
DG25-50 x 3
DG multistage boiler feed pump
25 – flow (m3 / h)
50 – single-stage pump head (m)
3 – pump series
40 dg Ⅰ 40 x 3
40 – pump inlet diameter (mm)
DG – multistage boiler feed pump
40 – single-stage pump head (m)
3 – pump series
DG type horizontal multistage centrifugal pump rotation direction:
Look from the motor end, pump is clockwise.
Product use
DG: DG type pump can transport not containing solid particles, the temperature is below 80 ℃ water or similar physical and chemical property of Yu Qingshui liquid, suitable for mines, factories and urban water supply and drainage engineering.