Lobe Pumps

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Lobe Pumps

• Marco Duca
• Tony Ghioldi
• Becky Grove

12 October 2005
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Lobe Pumps

• Lobe Pumps are rotating, fixed volume, positive
  displacement pumps.
• Basic components include
• Inlet
• Outlet
• Lobes

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OperationStep 1

• Rotation of lobes
• Creation of expanding volume
• Suction effect
• Fluid entrapment

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OperationStep 2

• Liquid flows between walls

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OperationStep 3

• Lobes re-mesh
• Fluid forced out by pressure

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Operating Conditions

• Operating Pressure
• 50300 psi
• Volume
• 0600 gpm
• Rotational Speed
• 5001000 rpm
• Suction lift
• Up to 25 ft.

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Advantages

• Able to mass medium solids
• No metal to metal connectivity
• Non pulsating discharge
• High sanitary qualities
• High efficiency, reliability
• Good clean-in-place/service-in-place qualities

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Disadvantages

• Requires timing gears
• Requires two seals
• Lower viscosity fluids lower the suction lift

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Industrial Uses

• Sanitation
• Food Services
• Pharmaceutical
• Beverage