Structural Characteristics and Applications of Double-suction Pumps

As an important type of centrifugal pump, double-suction pumps are widely used in engineering projects due to their characteristics of high head and large flow rate. The impeller of this pump type is actually composed of two back-to-back single-suction impellers, and the water flow discharged from the impellers converges into a single volute.

Double-suction pumps have the following characteristics:

They are equivalent to two single-suction impellers of the same diameter operating simultaneously, which can double the flow rate under the same impeller outer diameter.

The pump casing adopts a horizontal split design, facilitating inspection and maintenance. Meanwhile, the inlet and outlet of the double-suction pump are oriented in the same direction and perpendicular to the pump shaft, which is conducive to the layout and installation of the pump and its inlet/outlet pipelines.

The impeller features a symmetrical structure, which eliminates axial force and ensures stable operation.

Structural Characteristics of Double-suction Pumps

Compact StructureIt boasts an aesthetically pleasing appearance, good stability and easy installation.

Stable OperationThe optimally designed double-suction impeller minimizes axial force to the greatest extent. It is equipped with impeller blades with excellent hydraulic performance and precision casting technology. Both the inner surface of the pump casing and the impeller surface are extremely smooth, delivering outstanding anti-cavitation performance and high operating efficiency.

Shaft SealsIt is configured with BURGMANN mechanical seals or packing seals, which can ensure leak-free operation for 8,000 hours.

BearingsIt adopts SKF and NSK bearings, which guarantee stable operation, low noise and a long service life.

Installation ModesNo adjustment is required during assembly. It can be installed either vertically or horizontally according to the on-site operating conditions.