Cutting-edge Rotary Lobe Blowers

Rotary lobe blowers with pressure to 1,000 mbar (g), vacuum to 100 mbar (a) & air flow to 25,000 m³/h
Wide range of models, sizes, options, and configurations available
Optimal performance and maximum uptime with consistent quality and reliability in every application

The range of Robuschi Rotary Lobe Blowers has been reinvented, focusing on delivering exacting customer requirements.

We launch the new Robox blower unit concept, a cutting-edge solution that can accommodate rotary lobe and screw technologies to provide users with greater choice than ever before in helping meet their industrial air and gas needs.

With the new Robox, the difference between lobe and screw technology is reduced to just a few components. This makes it simpler than ever to change from one technology to another and embraces the ongoing shift in mindset from capital investment to total cost of ownership.

Pressure - Vacuum

Because of the wide range of models, sizes, options, and configurations available from Robuschi, there is a rotary lobe blower that can provide solutions for most industrial applications. These blowers can operate in pressure and vacuum, and can be equipped as a complete package, with customisation according to specific industrial technical requirements and providing optimal performance and maximum uptime with consistent quality and reliability in every application. There is a rotary lobe vacuum product for just about any industrial requirement.

RBS | Oil-free Tri Lobe Blowers | Robuschi

Three Lobe Rotary Blowers

Pressure up to 1,000 mbar (g) - Vacuum up to 500 mbar (a) - Capacity up to 25,000 m³/h

RBS Steam | Rotary Lobe Blowers | Robuschi

Rotary Lobe Blowers for MVR

Pressure up to 1,000 mbar(g) – Vacuum up to 500 mbar(a) – Capacity up to 13,859 m³/h

The Innovative Robox Lobe Blower Unit | Robuschi

Blower Unit

Pressure up to 1,000 mbar(g)
Vacuum up to 500 mbar(a)
Capacity up to 10,500 m³h

CRBS - GRBS | Table Top Blower Units | Robuschi

Table Top Blower Units
Pressure up to 1,000 mbar (g) - Vacuum up to 500 mbar (a) - Capacity up to 25,000 m³/h

ROBOX BIO&GAS | Blower Units for Biogas and Gas

Rotary Lobe Blower Units for Biogas and Gas Applications
Pressure up to 1,000 mbar (g) - Vacuum up to 900 mbar (a) - Capacity up to 2,850 m³/h

Skid Blower Range for Biogas & Gas| Robuschi

Rotary Lobe Blower Skid for Biogas Applications
Pressure up to 400 mbar (g) - Vacuum up to 900 mbar (a) - Capacity up to 2,850 m³/h

RB-DV | Vacuum Blowers Range| Robuschi

Vacuum Blowers
Vacuum up to 100 mbar (a) - Capacity up to 10,500 m³/h

TRB-DV | Vacuum Blower for Mobile | Robuschi

Packaged version of RB-DV complete with noise enclosure

Robox Direct | Compact&Innovative Blower| Robuschi

Rotary Lobe Blower Package for Ehnanced Efficiency

Pressure up to 1,000 mbar(g) - Capacity up to 700 m³/h

Vacuum

Robox Lobe DV | Vacuum blower | Robuschi

Vacuum Units Vacuum up to 100 mbar (a) - Capacity up to 10,500 m³/h

RB/AV | High Vacuum Blowers Range| Robuschi

High Vacuum Blowers

Vacuum up to 0.001 mbar (a) - Capacity up to 30,000 m³/h

Custom solutions

We're always researching and developing new equipment and technical features to create custom solutions that meet your specific needs. If you require different colors, seals or additional instruments, feel free to contact us !

Do you need engineered solutions?

Visit our page about ETO solutions

Functionality of the “Roots” Positive Displacement Blowers

The air flow depends on the position and direction of the rotors. The typical installation provides a constant air flow, and that the rotational direction is dependent on the “Roots” blower design. As a side note, the Roots blower design is enduring and durable. The rotary positive air blower was designed in the 1850s and patented in 1860 by brothers Francis and Philander Roots and the Roots name has remained as the description of the design.

The basic principle is as follows: the process starts with air flowing from the inlet port into the element chamber. The timed rotation of the rotors against the wall of the chamber creates so-called “air flow direction”. There is still atmospheric pressure in these chambers.

As soon as the first lobe passes the opening to the pressure side, the system pressure is adjusted. This is called isochoric compression. The rotors seal each other off to the inside, which prevents a change of pressure.

RBS rotary lobe blower animation

To load this content, approve your cookie preferences and allow the required cookies.

Compression Principle

The performance of the compression principle is as follows. Positive displacement blowers operate using the isochoric compression principle, also known as external compression. The pressure increase is achieved by intermittently transporting a gaseous medium (e.g. atmospheric air) into a system. By forcing the medium from atmospheric conditions into a system with a given resistance (e.g. a water column, distribution network), the relevant pressure increase is achieved. The blower will operate at a controlled output level to overcome this resistance.

Positive displacement blowers are made up of two or three conjugate lobe shaped rotors which rotate inside a pre-machined chamber. The chamber is sealed by the rotating rotors. The rotors are synchronised by means of a timing 1:1 gear ratio, positioned at the end of the shafts. Bearings are positioned externally to the compression chamber with an oil lubricated system. The drive shafts have labyrinth style oil seals, so called because of the labyrinth of grooves that the oil must pass through. The splash lubrication system uses a fine mist of oil for lubrication.

Our products include vacuum pumps, screw compressors, and lobe compressors, and we can deliver the rotary lobe compressor to meet and exceed your application requirements. Our systems have a reputation for being low maintenance.

Learn More About Roots Blower

Applications

These products are suitable for many different applications, including the following:

Food and Beverage

Dairy processing, food packaging, filling and closing machines, evacuation, food preservation, evisceration, pneumatic conveying, concentration systems, degassing, evaporation, drying, removal of impurities, milking systems, fermentation, process fluids handling.

Lime and Cement

Pneumatic conveying, lime cement fluidization, combustion air, cooling air, combusted gas recovery, fluidization, FGD, lifting

Wastewater Blowers

Primary sedimentation, aeration process, slurry pumping in wastewater treatment plants

General Manufacturing Industry Applications

Central vacuum systems, pick & place, pneumatic conveying, lifting system, air knives, fluid transfer, industrial cleaning, metalization, painting, vacuum in glass forming, air lifting, jet dryer, feeding inert gas, gas handling, air Carpet, holding and lifting, preservation, wood drying

Mining Industry Applications| Robuschi

Methane gas extraction, ventilation

Pulp and Paper

Clean liquid handling, pulp handling, pulp drying, tissue

Plastics

Cooling and drying, extruder degassing, rubber degassing, dryers, granulate conveying, forming

Power Generation and Oil & Gas

Flue gas desulphurisation, bed combustion fluidization, condenser evacuation, sand oil fields recovery, recovery of cleaning liquids

Chemical and Pharmaceutical Industry Applications

Coating, cooling, distillation, degassing, drying, gas compression, impregnation, pneumatic conveying, solvent recovery, thin layer evaporation, clean liquid handling, process liquid handling

FAQs

Rotary lobe blowers use synchronized rotors for oil-free compression. Screw blowers offer higher efficiency at variable loads but are more complex and costly.

Rotary Lobe Blowers