Impeller pumps (flexible vane pumps) are positive displacement pumps that, thanks to their unique design, provide efficient and gentle liquid handling. Their main feature is the use of a flexible impeller (impeller with blades), which allows them to handle liquids of various viscosities, including delicate, abrasive or containing solid particles.

The principle of operation of the impeller pump

1. Impeller: Inside the pump casing is an impeller with flexible blades. As it rotates, the impeller collides with the chamber walls, creating sealed chambers that capture and move the fluid.
2. Flexible blades: Thanks to the flexibility of the blades, the pump is able to adapt to changes in fluid viscosity while maintaining transportation efficiency.
3. Camera compression and expansion: As the impeller rotates, the chambers change their volume, ensuring smooth suction and ejection of liquid through the inlet and outlet nozzles.

Areas of application

1. Food industry:
   • Pumping milk, cream, juices, purees, syrups, alcoholic beverages.
   • Working with delicate products such as yogurt or sauces.
2. Pharmaceuticals:
   • Transportation of biological solutions, medicines, gels.
   • They meet sterility requirements and are compatible with CIP/SIP systems.
3. Cosmetics industry:
   • Work with thick substances such as creams, shampoos, lotions.
4. Chemical industry:
   • Pumping aggressive liquids, including weak acids, solvents, and slurries.
5. Maritime industry:
   • They are used in engine cooling systems, fuel and other technical fluids.

Features of impeller pumps

1. Delicate transportation: Thanks to the smooth movement and gentle contact of the blades with the liquid, the pump preserves the structure of the products, which is especially important in sensitive environments.
2. Self-priming: They are capable of creating a vacuum and sucking liquid even from empty pipes, which simplifies startup.
3. Reverse flow: The pump can reverse the flow direction, which is convenient for process lines with reverse cycles.
4. Compatible with a wide range of liquids: They work with low-viscosity, high-viscosity, abrasive, foamy and aggressive liquids.
5. Resistance to wear and tear: The blades are made of robust materials such as rubber, EPDM, or PTFE, which ensures long-lasting operation even in abrasive environments.
6. Easy to clean: Supports automatic CIP/SIP systems for sanitary cleaning.

How to choose the right impeller pump?

1. Fluid characteristics: Consider the viscosity, solids, temperature, and aggressiveness of the fluid.
2. Матеріал лопатей: Choose a material that matches the characteristics of the fluid (e.g. EPDM for food or PTFE for aggressive chemicals).
3. Productivity: Calculate the required pumping volume and head.
4. Temperature of the working environment: Check whether the pump is capable of handling hot or cold liquids.
5. Hygienic requirements: For the food and pharmaceutical industries, make sure the pump meets FDA, EHEDG, or 3-A standards.
6. Additional features: Consider the need for reversible flow, CIP/SIP support, or special enclosure coatings.

Advantages of the impeller pump

• Versatility: Capable of handling a wide range of fluids and operating conditions.
• Easy to maintain: Quick access to parts for replacement or cleaning.
• Energy efficiency: Low energy consumption even when handling highly viscous liquids.
• Compactness: Its small size makes it easy to integrate into production lines.
• Durability: Robust construction for long-lasting use.

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