centrifugal pump systems|centrifugal pump diagram and explanation

Centrifugal pumps and gear pumps are two common types of industrial pumps, each with its .

A centrifugal pump containing two or more impellers is called a multistage centrifugal pump. The impellers may be mounted on the same shaft or on different shafts. At each stage, the fluid undergoes an increase in pressure as it passes through the impeller. This article will delve into different aspects of centrifugal pump systems, including their types, working principles, diagrams, characteristics, parts, and functions.

Centrifugal pumps are used to transport fluids by the conversion of rotational kinetic energy to the hydrodynamic energy of the fluid flow. The rotational energy typically comes from an engine or electric motor. They are a sub-class of dynamic axisymmetric work-absorbing turbomachinery. The fluid enters

Different Types of Centrifugal Pumps

Centrifugal pumps come in various types, each designed for specific applications. Some common types include:

1. **Single-stage Centrifugal Pump**: This type of pump has only one impeller and is suitable for applications where low to moderate pressure is required.

2. **Multistage Centrifugal Pump**: As mentioned earlier, a multistage centrifugal pump contains multiple impellers to achieve higher pressure levels. These pumps are used in applications where high pressure is needed, such as in boiler feed systems and water treatment plants.

3. **Vertical Centrifugal Pump**: In this type of pump, the shaft is positioned vertically, making it suitable for applications where space is limited horizontally.

4. **Horizontal Centrifugal Pump**: The shaft in a horizontal centrifugal pump is positioned horizontally, making it a common choice for various industrial applications.

Centrifugal Pump Working with Pictures


The working principle of a centrifugal pump is based on the transfer of mechanical energy from a motor to the fluid being pumped. The rotation of the impeller creates a centrifugal force that pushes the fluid outward, increasing its velocity. This kinetic energy is then converted into pressure energy as the fluid exits the pump through the discharge outlet.

Centrifugal Pumps: How They Work

Centrifugal pumps work by utilizing the centrifugal force generated by the rotation of the impeller. The fluid enters the pump through the suction inlet and is directed towards the center of the impeller. As the impeller rotates, it imparts kinetic energy to the fluid, causing it to move radially outward. This increase in velocity results in a decrease in pressure, creating a low-pressure zone at the center of the impeller.

Centrifugal Pump Diagram and Explanation


1. **Suction Inlet**: The point at which the fluid enters the pump.

2. **Impeller**: The rotating component that imparts energy to the fluid.

3. **Volutes**: The curved channels that guide the fluid from the impeller to the discharge outlet.

4. **Discharge Outlet**: The point at which the pressurized fluid exits the pump.

Characteristics of a Centrifugal Pump

Centrifugal pumps offer several key characteristics that make them suitable for a wide range of applications:

1. **High Efficiency**: Centrifugal pumps are known for their high efficiency in converting mechanical energy into fluid flow.

2. **Variable Flow Rates**: The flow rate of a centrifugal pump can be easily adjusted by changing the speed of the motor.

3. **Low Maintenance**: Centrifugal pumps have fewer moving parts, resulting in lower maintenance requirements.

4. **Self-Priming**: Some centrifugal pumps are capable of self-priming, meaning they can evacuate air from the suction line and start pumping fluid without external priming.

Centrifugal Pump Parts and Function

1. **Impeller**: The rotating component that imparts energy to the fluid.

2. **Casing**: The outer shell that encloses the impeller and volutes.

3. **Shaft**: The component that connects the motor to the impeller.

4. **Bearings**: Support the shaft and allow it to rotate smoothly.

5. **Seals**: Prevent leakage of fluid from the pump.

6. **Suction Inlet**: Where the fluid enters the pump.

7. **Discharge Outlet**: Where the pressurized fluid exits the pump.

What Does Centrifugal Pump Mean

According to Reti, the first machine that could be characterized as a centrifugal pump was a mud lifting machine which appeared as early as 1475 in a treatise by the Italian

A more comprehensive pump performance diagram for a centrifugal pump is shown in Figure 7. The diagram includes curves that relate flow rate, head, efficiency, power, and impeller size. The flow-head curves relate the amount of flow produced at corresponding head values.

centrifugal pump systems|centrifugal pump diagram and explanation