K-Tron has developed an interesting solution for applications where all feeder components which come in contact with the bulk material must be completely separated from the atmosphere. (e.g. in the Pharma industry). A special back plate made of stainless steel is mounted between the material feeding area and the motor/drive for installation in a wall. This can also be outfitted with a pressurized seamless seal. A glovebox can then be added on the production side for complete separation from the atmosphere. Sealed gloves mounted in the side of the glovebox allow access to the interior without danger of contamination.
The atmosphere inside the glovebox can either be at low pressure to prevent the bulk material leaking out or at high pressure to prevent outside contamination of the bulk material.
This application is often used in combination with a Jet Mill (micronization) mounted inside the glovebox.