pneumatic conveyor
Vacuum conveying enables hygienic transfer of materials, even on long and twisting routes
Vacuum conveying enables hygienic transfer of materials, even on long and twisting routes
We design and manufacture pneumatic conveying systems in negative pressure both dilute and semi-dense phase, to meet the needs and requirements of the food, chemical, and plastic industries.
They are used for example when is necessary to charge and weight content into powder mixers with multiple components, starting from different big bags or fully emptying previously batched hoppers.
It is an easy to install system, particularly suitable to convey food and potential explosive powders in a safe and clean way for long distances.
Gimat powder mixers have been studied to be under vacuum and filled up pneumatically, realizing a high speed and economical filling system, very easy to clean.
ATEX - Explosion Proof Protected
On request Gimat pneumatic conveying equipment can be designed and manufactured in compliance with the Directive ATEX 2014/34/EU FOR ZONE 2-22 / ZONE 1-21
Electric vacuum or pneumatic pumps
Easy removable filter groups, for fast cleaning
Perfectly dust-tight thanks to negative pressure inside pipeline
Direct suction into the vertical ribbon mixer
Here an example of a typical pneumatic system designed by Gimat. A pneumatic conveyor system in the dilute phase empties the big bags. A cyclone separator is integrated in the vertical ribbon mixer. The content of the mixer is then transferred into a container holding the same blend of materials. To prevent the separation of the previously obtained product mix, a flexible screw conveyor is used to transport the blend.
In lean phase pneumatic conveying, the material to be conveyed is suspended in the airstream and the ratio of material to air is low (up to 5 kg product / kg air), meaning that the material is conveyed in a dilute phase.
In semi-dense phase pneumatic conveying the material to be conveyed is only partially suspended in the air stream and moves for the most part by sliding on the pipeline. The ratio of material to air is higher (up to 10 kg product / kg air), meaning that the material is conveyed with a higher concentration inside the tube and also lower speed is used.
In both cases the best way to regulate the material fed into the inlet point is using a rotary valve that dose the product into the air flow ensuring a correct and constant product/air ratio.
The main factors we need to analyse to design a pneumatic conveying system for you are:
The variety of cases we have dealt with over the past 50 years allows us to say that no two projects are the same, and the choice of one system over another depends precisely on the combination of many factors. Here, we summarise the general characteristics of both systems. Our R&D department has capitalised on the experience gained over the years to make the most of the advantages of both methods.
Semi-dense phase: pros and cons
Dilute phase: pros and cons