A specialised version of the TU-type screw conveyor, configured in particular for use with hydrated lime, the PR-type Tubular Screw Feeder comes with a ribbon flight screw. For process reasons this screw feeder type is often equipped with a variable speed drive.

Function

PR Ribbon Flight Screw Feeders ensure uniform discharging and feeding of lime in special dosing plants from a silo into a dissolver or micro-feeding device.

Features

• Outside tube diameters: 70 mm (2.8 in), 82 mm (3.2 in), 114 mm (4.5 in), 168 mm (6.6 in)

• Tubular casing in standard flanged sections with one section made to measure

• Standard inspection hatch beneath inlet

• Ribbon flight screw with splined shaft couplings

• Direct-mounted WAM gear reduction unit (with or without mechanical variable speed drive) with incorporated, fully protected, maintenance-free end bearing assembly and self-adjusting packing gland seal

• Standard flange-mounted electric motor

• No intermediate hanger bearings

• Feed rates: 70 ~ 4,500 litres per hour (0.04 ~ 2.6 cfm)

• Installed drive power: 0.37 kW (0.5 HP) ~ 3.0 kW (4.0 HP)

Benefits

• Uniform material flow

• High feeding accuracy

• No flushing

Options

• Fluidised inlet hopper

• Fluidisation pads