The aim of the development of this application was to produce 2 units of DC-150 cellular dispensers for potato starch transport, designed for operation in Atex zone 22 - inside and outside the machine.

Design assumptions

The type of material to be conveyed is potato starch.
Material temperature is ambient temperature
Bulk weight is 350 kg/m3
Material characteristics: caking - dry bulk material does not stick to the walls of the unit
Nominal capacity: Q=50I(20kg)/min, 3m3/h (achieved capacity is 50 kg/1min)


Design requirements:
Atex zone 22 inside and outside the unit.
Gearmotor with designation for Atex zone: zone 21:
three-phase electric motor: II 2D Ex tb IIIC T125°C Db
Gearbox: II 2D Ex h IIIC T125°C Db
Indoor installation.
Stainless steel 316L body and impeller with blades.

Rotary valve feed DC - 150

Inlet/outlet dimension: fi 220mm.
Driven by Nord geared motor 0.37kW 400V, 50Hz.

Adaptable to work with an inverter to regulate the dosing capacity
Increased bearing life through the use of expansion joints between the dispenser body and the bearing mount.

Please see the measurement video below: