Rotor Technologies

Liquilob combines engineering, precision machining and long-life performance in rotary lobe pump technology. Each rotor geometry is optimised for a different process requirement, and choosing the right rotor matters as much as choosing the right frame size.

The Liquilob rotor family: multi-impeller, tri-lobe, bi-wing and single-wing rotor pairs

Four geometries, one hydraulic principle

The sections below are drawn to scale against the same bore diameter, so the only thing changing is the rotor. As the lobe count rises, more cells open per revolution, each carries less volume and the flow becomes finer. As it falls, the cells grow and the pump carries larger particles.

  1. Single-Wing Rotor

    Single-Wing Rotor

    Single-Wing

  2. Bi-Wing Rotor

    Bi-Wing Rotor

    Bi-Wing / Butterfly

  3. Tri-Lobe Rotor

    Tri-Lobe Rotor

    Tri-Lobe

  4. Multi-Impeller Rotor

    Multi-Impeller Rotor

    Multi-Impeller

Single-Wing Rotor

Single-Wing

For products carrying large particles whose structure has to survive the transfer.

Developed for transferring products that carry large particles and whose structure has to be preserved. It moves the product without breaking it down, and without crushing or cutting the particles. A single large cell volume carries solids such as fruit pieces or diced vegetables through the casing without trapping them between rotor and housing.

  • Particle-friendly geometry
  • Low-shear transfer
  • Strong product protection in food and cosmetics duties

Bi-Wing Rotor

Bi-Wing / Butterfly

Balance and efficiency on medium and high-viscosity media.

A balance-and-efficiency solution for medium and high-viscosity media. Continuity of flow keeps vibration and pulsation to a minimum. The wing geometry distributes torque evenly along the shaft, which bears directly on bearing life over long discharge lines.

  • Even torque distribution
  • Stable flow at high viscosity
  • Suited to creams, syrups, jams and similar products

Tri-Lobe Rotor

Tri-Lobe

The most widely applicable rotor in the series.

The most frequently specified Liquilob rotor and the one with the widest field of use. It delivers high flow, stable running and long service life. Three lines of contact hold volumetric efficiency steady across a wide viscosity band, which makes this the geometry to start from when a process is not yet fully characterised.

  • Operation across a wide viscosity range
  • High efficiency with low energy loss
  • Performance above the industrial standard

Multi-Impeller Rotor

Multi-Impeller

For processes that need precise dosing and minimal pulsation.

Developed for precision duties, this geometry provides advanced flow control. As the impeller count rises, more cells open per revolution and each carries less volume, which takes flow precision to its maximum. It is suitable for use as a dosing pump.

  • High dosing precision
  • Minimal pulsation
  • Well suited to chemical and pharmaceutical duties

Liquilob is not only a pump. It carries process safety, product quality and sustainable performance.

  • Rotors machined to CNC tolerances
  • Long life and high wear resistance
  • Hygienic design and a geometry that cleans easily
  • Quiet, vibration-free, dependable running
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Let us determine the right pump for your application together.

Share your fluid characteristics and operating conditions, and our engineering team will help you arrive at the right Liquilob configuration.

Call us directly+90 505 353 50 75