A multistage pump is similar in design to that of a centrifugal pump in that several impellers rotate around a shaft to enable the pump to reach higher pressures than that if only one impeller was used.
Send InquiryChat NowModel: D6-50X3
Capacity: 6.3m³/h
Head: 100m
Speed: 2950rpm
Motor Power: 11KW
Impeller Dia: 198mm
Weight: 140kg
Impellers within such designs are mounted in Ring Sections along the shaft with each ring section consisting of an Impeller, with a suction casing on one side, and discharge casing / diffuser on the other.
The impeller draws fluid in through the suction casing, to the outside of the impeller before being discharged through the discharge casing, which will then enter another ring section repeatedly until the fluid discharges through the outlet.
The ring sections are held together with tie bolts which run along the casing. Internal designs varying for shaft seals and bearings being on one end of the pump, or both dependent on duty and application.
When stages of impellers are added the flow rate is not altered but the total head and shaft power increases proportionally to the number of stages. Each stages consists of an impeller and diffuser.
Models can be constructed either vertically or horizontally depending on whether designs are required which are space saving, or which can be maintained in situ without removal of the motor.
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