Application

Vacuum Feeding

Airlock under a vacuum receiver that returns product to atmosphere while holding receiver vacuum to -0.6 bar.

Pain points

Air leaking into the receiver
Leakage through the tip gap erodes the receiver vacuum and the blower has to run harder. Closed-ended rotors with adjustable tips keep leakage under 3 % of the conveying airflow.
Rotor stall under a product column
A stopped rotor under a full receiver packs the pocket and the drive trips on overload. A torque limiter and a rotor speed monitor trip the feeder before the pocket packs solid.
Seal failure from dust and vacuum pull
The pressure difference pulls dust into the end-cover seals. A leakage gas collector balances the end cover so the bearing cavity stays clean and the seals run dry.

Standard drop-through airlock for gravity discharge and vacuum feeding.

Sanitary design with rail-mounted rotor extraction.