The DFSS series double - suction pumps are horizontal single -
stage double - suction pumps. This series of pumps adopts a
horizontal split - case structure. Meanwhile, it has obtained the
national key new product certification recognized by the Ministry
of Science and Technology of the People's Republic of China and the
certificate of high - tech achievement transformation recognition
in Shanghai.
The DFSS series pumps have remarkable features such as reliable
performance, energy - saving, convenient maintenance, and long
service life. Since they were put into the market, they have been
highly favored by users.
The pump adopts a straight - line design with reinforcing ribs,
making the pump structure more reasonable, aesthetically pleasing,
and stable in installation.
The short bearing spacing improves the shaft rigidity, ensuring the
unit operates stably with small vibration and low noise.
The fully - sealed pump shaft design prevents the pump shaft from
contacting the conveyed medium, thus ensuring that the pump shaft
is not corroded, easy to disassemble and assemble, and has a long
service life.
Some bearing bodies adopt a split - middle structure. By opening
the pump cover and the upper cover of the bearing body, the entire
rotor can be taken out, which enables simple adjustment and
convenient maintenance.
There are two types of shaft seal structures: mechanical seal and
packing seal. According to user requirements, special sealing
methods can also be adopted, such as sand - proof special seal,
lamellar shear packing seal, etc.
The pump body and pump cover both use resin - sand molding, which
ensures accurate dimensions of the casting appearance and flow
channels, as well as a smooth surface, thus improving the hydraulic
efficiency.
The pump selects a hydraulic model and adopts CFD optimization
design, which improves the hydraulic efficiency of the pump and its
cavitation performance.
The finite - element method is used for strength calculation,
making the pump operate more reliably and durably and extending its
service life.
The bearing has a water - cooling structure and can be used under
high - temperature working conditions.
Applications
This series of products is applicable to industries such as power
stations, water supply, municipal, construction, fire protection,
industrial and mining enterprises, etc., for conveying clean water
or other media with physical and chemical properties similar to
clean water.
Operating Conditions
- Flow rate: 66 - 37000 m³/h
- Head: 5 - 180 m
- Inlet pressure: < 0.3 MPa
- Temperature of conveyed medium: Conventional ≤ 80°C, with cooling
structure < 105°C. Special order is required when the inlet
pressure ≥ 0.3 MPa or the temperature is equal to or higher than
105°C.
Structural Diagram (Structure for Calibers Below 700)
Serial Number, Name and Conventional Material List
Note: 1. The above material configuration is the configuration when
the user does not specify materials.
2. Users can select other materials and flow-through parts as
needed, such as ductile iron, cast iron, stainless steel, cast
copper, etc
Structural Diagram (Structure for Calibers Above 700)
Serial number, name and conventional material list
Pump Rotation Direction Diagram
Standard type (Looking at the pump from the motor end, the rotation
direction of the pump is clockwise rotation).
Counterclockwise type (Looking at the pump from the motor end, the
rotation direction of the pump is counterclockwise rotation).
