Centrifugal Pumps Different Parts & Their function in Pharmaceuticals Industries

Centrifugal Pumps Different Parts & Their function in Pharmaceuticals Industries

1. Centrifugal Pumps Different Parts & Their function in Pharmaceuticals Industries Subscribe Watch Full Video

2. Centrifugals Pumps Parts: What are main parts of centrifugal pumps? Impeller Casing ( Volute) Shaft (Rotor ) Shaft sealing Bearings

3. Centrifugals Pumps Parts: Impeller: Impeller is a rotor used to increase the kinetic energy of the flow. The impeller is the rotating component within the centrifugal pump design, which transfers the energy from the pump’s motor to the fluid. It is made up of vanes that come off an open inlet at the centre, known as the eye, which create a centrifugal force as they spin to move the liquid from the casing to the discharge point.

4. Centrifugals Pumps Parts: Impeller Types: Open: Open impellers have the vanes free on both sides. Open impellers are structurally weak. They are typically used in small-diameter, inexpensive pumps and pumps handling suspended solids . they require a higher NPSH to operate without cavitations, damage and loss of efficiency.

5. Centrifugals Pumps Parts: Impeller Types: Semi-open impeller . The vanes are free on one side and enclosed on the other. The shroud adds mechanical strength. They also offer higher efficiencies than open impellers. They can be used in medium-diameter pumps and with liquids containing small amounts of suspended solids. Because of minimization of recirculation and other losses, it is very important that a small clearance exists between the impeller vanes and the casing.

6. Centrifugals Pumps Parts: Impeller Types: Closed impeller . The vanes are located between the two discs, all in a single casting. They are used in large pumps with high efficiencies and low required

7. Centrifugals Pumps Parts: Impeller Selection: Solid Handling Strength Efficiency Duty

8. Centrifugals Pumps Parts: Impeller Selection: Solid Handling: Open & Vortex Impellers can handle solid content in fluid where closed impellers are prone to clogging | wear. Strength: Closed Impeller have a front and back shroud adding strength for heavier duty use where open impellers do not benefit from.

9. Centrifugals Pumps Parts: Impeller Selection: 3. Efficiency: Open Impellers are less efficient than closed impellers & require higher NPSH to operate with out cavitations or loss of efficiency. 4. Duty: As larger the impellers diameter, greater the flow / head produced. Duty required determines the impeller size.

10. Centrifugals Pumps Parts: Impeller Can Be Either: Single-suction: A single-suction impeller allows liquid to enter the centre of the blades from only one direction. Double-suction . A double-suction impeller allows liquid to enter the centre of the impeller blades from both sides simultaneously. This reduces forces exerted on the shaft.

11. Centrifugals Pumps Parts: Casing ( Volute): The  volute  is a curved funnel that increases in area as it approaches the discharge port. The casing contains the liquid and acts as a  pressure containment vessel  that directs the flow of liquid  in  and  out  of the centrifugal pump. The   volute  of a centrifugal pump is the casing that receives the fluid being pumped by the impeller, slowing down the fluid’s rate of flow.

12. Centrifugals Pumps Parts: Casing ( Volute): According to Bernoulli’s principle, the volute converts kinetic energy into pressure by reducing speed while increasing pressure. Some centrifugal pumps contain diffusers. A diffuser is a set of stationary vanes that surround the impeller. The diffuser directs the flow, allows a more gradual expansion and therefore increases the efficiency of the centrifugal pump.

13. Centrifugals Pumps Parts: Shaft (Rotor).  The impeller is mounted on a shaft. Shaft  is a mechanical component for transmitting torque from the motor to the impeller .

14. Centrifugals Pumps Parts: Shaft sealing.  Centrifugal pumps are provided with packing rings or mechanical seal which helps prevent the leakage of the pumped liquid .

15. Centrifugals Pumps Parts: Bearings .  Bearings constrain relative motion of the shaft (rotor) and reduce friction between the rotating shaft and the stator. There are at least 5 common types of bearing, each of which operates on different principles: Plain bearing Rolling-element bearing Jewel bearing Fluid bearing Magnetic bearing

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