This animation explains the working principle of a Flexible Impeller Pump, a type of positive displacement rotary pump widely used in marine, food, and chemical applications.
The pump uses a flexible rubber impeller that rotates inside an eccentric casing.
As the impeller blades bend and unbend during rotation, they create variable chamber volumes — drawing fluid in on one side and pushing it out on the other.
💡 Key working stages:
1️⃣ Suction zone: Vanes straighten, creating vacuum to draw fluid in.
2️⃣ Transfer zone: Fluid is carried between vanes in sealed chambers.
3️⃣ Discharge zone: Vanes bend again, compressing and expelling the fluid.
The elastic deformation of the impeller ensures continuous flow, excellent self-priming, and gentle handling of fluids — even viscous or sensitive ones.
🔧 Applications:
Marine bilge and cooling systems
Beverage and food processing
Chemical and pharmaceutical industries
🎓 Ideal for anyone studying fluid mechanics, rotary pumps, or mechanical motion design.
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