DG 6-25 High Pressure Multistage Pump 3.75~7.5 m³/h Flow 2 m NPSHr
- DG type horizontal single-suction multi-stage segmental vertical
centrifugal pump, the chemical and physical properties for
conveying water or similar Yu Qingshui liquid, suitable for the
medium and low-pressure boiler or high-pressure boiler feed water,
can also be applied to plant, the city of high-pressure water
supply and drainage.
- The medium temperature is -20 ℃ ~ 150 ℃, inlet allowed pressure is
less than 0.6 Mpa.
- This series of pumps are adopted country it is recommended to use
the 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
- DG type 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
- This series of pump rotor parts is mainly composed of and installed
on the shaft of the impeller, shaft sleeve, the balance disc parts,
such as the quantity according to the series of the pump
impeller.Shaft parts with the flat key and shaft nut fastening and
- 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 bearing.
- Rolling bearings with grease lubrication, sliding bearing with thin
oil lubrication, and the self-lubricating oil ring, circulating
- 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.
- Loading pump seal element in a sealed box, box through a certain
pressure of water, the water seal, the action of water or water
- In the shaft seal is equipped with replaceable shaft sleeve, the
protection of pump shaft.
- Time high-pressure pump generally adopts sliding bearing, thin oil
lubrication structure, DG85-67, DG155-67 type pump can adopt
sliding bearing, thin oil lubrication also can use rolling bearing,
the structure of the centralized grease lubrication, the rest of
the model adopts rolling bearing, dry lubrication structure.
- Of the major parts material and low-pressure pump generally USES
the high quality cast iron, high-pressure pump main parts adopt
cast steel or stainless steel.
- This series of pump through the flexible coupling, driven by a
prime mover directly from the direction of the prime mover, the
pump is clockwise.
Such as DG 6-25×6
DG - Sectional centrifugal pump boiler
6 - the design flow rate
25 - Single-stage head
6 - series for level 6
DG 6-25 Performance Parameter
|Level||Flow Q||Head||Speed||η||shaft power||Motor||Impeller||Pump||Moter|