+086-13363833280
1245738092@qq.com
A centrifugal pump operates by
transferring rotational energy from one or more driven rotors called
impellers. The effect of the impeller increases the velocity and
pressure of the fluid and directs it to the pump outlet. By virtue of
its simple design, centrifugal pumps are well known and easy to operate
and maintain
What is a centrifugal pump?
A centrifugal pump is a mechanical device
designed to move fluid by rotating energy from one or more driven
rotors, called impellers. The fluid enters the fast rotating impeller
along its axis and is discharged through the blade tip of the impeller
along its circumference through the centrifugal force. The effect of the
impeller increases the velocity and pressure of the fluid and also
directs it to the pump outlet. The pump housing is specially designed to
compress the fluid coming from the pump inlet, channel it into the
impeller, and then decelerate and control the fluid before discharging.
How does a centrifugal pump work?
The impeller is a key component of a
centrifugal slurry pump. It consists of a series of curved blades. These
are usually sandwiched between two discs (a closed impeller). For
fluids with entrained solids, open or semi-open impellers (supported by a
single disc) are preferred.
The fluid enters the impeller along its
axis ("eye") and flows out along the circumference between the blades.
The impeller is on the side opposite to the eye, connected to the motor
through the drive shaft, and rotates at a high speed (usually
500-5000rpm). The rotating movement of the impeller accelerates the
fluid through the impeller blades into the pump casing.
There are two basic designs of pump
housing: volute and diffuser. The purpose of both designs is to convert
fluid flow into controlled discharge under pressure. In the volute, the
impeller is offset, effectively forming a curved funnel whose
cross-sectional area toward the pump outlet increases. This design
increases the fluid pressure towards the outlet.
The same basic principles apply to diffuser design.
