Inert Explosion-Proof (INEX) Vacuum Conveyors
Volkmann Inert Explosion-proof Pneumatic Vacuum Conveyors (INEX) provide secure feeding of solids into critical process areas, such as powder transfer into reactors and stirring vessels often found in the chemical and pharmaceutical industries. INEX systems can be used within all gas and dust explosion zones.
Preventing explosion under vacuum
Initially material is sucked into the separator of the INEX system. Before the material is released, the transportation line is closed and the INEX is set under vacuum. Then, the material inside the INEX is fluidized with inert gas (e.g. nitrogen) from the lowest point permeating the powder before finally being released through the systems discharge valve. The concentration of oxygen during discharge typically is below 7% or limited to such a value as to not compromise the inert status of the system to be fed.
For the conveying of hybrid mixtures, e.g. the transfer of powders containing solvents, the entire vacuum transportation process with an INEX Vacuum Conveying system takes place under inert atmosphere.
Volkmann INEX Pneumatic Vacuum Conveyors for hazardous applications and explosion zones
- are free of ignition sources
- operate completely pneumatically without electricity
- feature a completely electrical conductive design to dissipate static
- provide small interior filling volumes
- operate at low transportation speeds
- produce no heat or contain any hot surfaces
- include no rotary parts
- are easy to control and operate.
Volkmann provides extensive expertise and support for all hazardous applications. Indeed, all INEX systems have been designed for the specific demands of hazardous applications.
All new VOLKMANN Pneumatic Vacuum Conveyors INEX-VS, INEX-PPC and INEX-“pressure rated” Series are ATEX certified in accordance with directive 94/9/EG for the installation inside Zones 0, 1, 2, 21, and 22. EC-type examination certificate No. TÜV 03 ATEX 7017 X. For safe operation special terms/conditions apply.
[Ex] II (1) G D (discharging)/ II (1) D (2) G (inlet) II 2 G D c TX