What is pneumatic conveyor?
In industrial applications it is increasingly necessary to transport granular or powder materials in fluid suspension through numerous stages of the production process. In this regard, RGS has been developing innovative pneumatic transport solutions for all industrial realities.
Pneumatic conveyors transfer solid powdered or granular substances into pipes, usually circular, by means of a stream of air of adequate speed.
The fundamental distinction between the various types of pneumatic transport derives from the way in which the motion of the material is realized, through a current of air that can be:
- IN VACUUM (aspiration)
- IN PRESSURE (thrust)

How pneumatic conveyors work?
Pneumatic conveyors are systems widely used in industry to transfer materials at different points through closed pipelines. Material transfer is the combination of a difference in depression or pressure and the flow of air or gas within the pipes.
Depending on the needs, a different gas can be used, such as nitrogen, which being inert lends itself to the transport of potentially explosive materials, or for products of easy oxidation.
The purpose of a pneumatic conveying system is to transfer materials from one or more points to a final destination or to a further production process; among these we can find the processes of mixing, granulation, concentration, processing and packaging.
* These different technologies will be explained in specific applications.
Advantages

Small Foot Print
Very small dimensions, extreme flexibility of positioning and management, no external pollution, speed in the internal sanitization of the components.

Dust Free
The basic idea is to maintain high standards of cleanliness and hygiene in all production departments. In this regard, the use of a closed-circuit pneumatic transport system using vacuum is the best solution for the elimination of annoying dust emission points. All our systems can also be ATEX certified.


Food Grade
RGS pneumatic transfer systems are used in the food industry where high quality standards must be met. Thanks to our long experience in this field we are able to produce a wide range of conveyors and systems, both standard and customized, all in accordance with the regulations regarding materials and articles intended to come into contact with food products: 1935/2004, as well as the USA FDA regulations.


Think safe – Work safe – Work easy
Our conveyors are designed with features to make them easy to use, install and maintain. You can easily access the filters for inspection or change. The ease of disassembly allows you to remove filters without the use of tools, reducing the time needed to perform the reclamation for material change and ordinary maintenance.
How pneumatic conveyors work in a vacuum and in pressure?
Vacuum Dilute Phase Pneumatic Conveyors

Normally fans (much air and little depression or pressure) or side channel impellers (good depression or pressure and good amount of air) are used. In some applications also the lobe pumps (excellent depression or pressure and air).
These applications are ideal for medium-range and distance pneumatic transfers, maintaining an excellent price performance ratio. With these systems one or more discharge points can be served starting from a single sampling point and using a single pump.
In this system the material floats in the air at a speed of about 30/40 m/s.
High Vacuum – Semi-Dense Pneumatic Conveyors

For this particular type of pneumatic transfer, where the product must not be de-mixed or even laminated on arrival, normally used by pharmaceutical and food companies to serve packaging machines, vacuum pumps or hooks are used (little air and a lot of depression or pressure).
In this system the material travels at a speed of about 20 m/s.
Vacuum Dense Phase Pneumatic Conveyors

Dense phase transport is ideal for transporting fragile products, abrasives and mixtures. It is then used for long distances and/or large volumes.
In this system the material travels at a speed of about 2/5 m/s.


We pick up product from:
- Hoppers / Big bags / Silos / Drums
- Sacks / Dryers
- Cutting machines / Floors
- Centrifuges / Hoppers of product sockets
- Containers / Bag breakers
- Vibrating Channels / Vibrating screens

We transport directly to:
- Mixers / Reactors
- Filling machines
- Hoppers with weighing systems
- Sieves / Tablet Press Machines
- Bag / Drum filling systems
- Silos / Packaging machines
- Filters
- Lines of work
* During the transport process we can also foresee mixing, screening, weighing and dosing systems.
What can you convey?
Our pneumatic conveyor systems are widely used in many sectors of which the main ones are: food, tobacco, nutraceutical, pharmaceutical, cosmetic, mechanical engineering and many others.

Chemical and Pharmaceutical
- Coal
- Bentonite
- Diatomite
- Sodium nitrate
- Silicon dioxide
- Cellulose powder
- Magnesium
- Sodium bicarbonate
- Plants drugs
- Preparations of vitamins
- Pharmaceutical powders
- Tablets
- Capsule
- Resins

Food
- Aromas
- Malt and hops
- Legumes
- Chocolate
- Cacao
- Spices
- Sugar
- Animal food
- Pectin
- Rice
- Tea
- Tobacco
- Milk powder
- Cereals
- Roasted and wheat coffee
- Dried fruit (hazelnuts, peanuts, pistachios…)
- Flour
- Spices (pepper, salt, paprika, garlic…)

Oenological and Oil
- Perlite
- Fossil flour
- Bentonite
- Coal

Mechanic
- Aluminium powder
- Iron powder
- Metal shavings
- Steel granules
- Zinc powder

Plastic
- Plastic stoppers
- PE-PP powder caoutchouc
- Granules of polyethylene
- Granules of polyurethane
- Calcium carbonate

Ceramic
- Colouring and decorating powders
- Teflon powder
- Oxides
- Toner powder
- Biossids
- Pigments
- Atomized

Packaging
- Trims of packaging lines
- Textile cuttings