Biomass since 1992

HDG FRA Wood chip and wood pellet feed system

HDG fuel feed systems for wood chip and wood pellet boilers

 

FRA feed system

FRA flexi-blade delivery system
The HDG flexi-blade delivery system can be used for simple, unproblematic delivery of wood chips, pellets, planing and saw shavings from material storage bunkers with a maximum fill height of 5.00 m (max. bulk weight 250 kg/m³, max. fill height for pressed briquettes and pellets approx. 3.00 m). The flexi-blade delivery system is offered in three sizes: for 2.5 m , 3.5 m and 4.5 m bunker diameters. Two nested spring steel blades push the fuel into an auger which carries the material out of the bunker. The special design of the auger provides for energy-saving operation due to changing of the upward slope and diameter. The well-designed "shaft within tube" construction results in a separate transfer of force on the auger and turntable. This design ensures minimum material stress while enabling the auger to run in reverse. Note: a wooden intermediate base should be installed by the customer in the material bunker for the purpose of load compensation of the spring steel blades.

Suitable fuels
Flexi-blade delivery system FRA, suitable for agriculturally generated wood chips (50 x 30 x 20 mm), planing and saw shavings, pressed briquettes and pellets, drive motor 0.75 kW, delivery output 75 kg/h or 0.5m³/h for wood chips, inspection opening with safety limit switch, dished base with 2 spring steel blades, bevel gear, mechanical reversal option of the fuel transfer system and Thermal safety device (heat dump) for connection to a water extinguisher unit.
Maximum mounting angle for wood chip 25° for briquettes and pellets 5°.


HDG FRA Wood chip and wood pellet feed systemHDG FRA Wood chip and wood pellet feed system

HDG FRA Wood chip and wood pellet feed system

FRA feed system

FRA mounting

FRA fitted

FRA attached to side

FRA attached to end

Design Information

fra design

Typical examples


A

D

FRA 2.5

2.5m

2.25m

FRA 3.5

3.5m

2.75m

FRA 4.5

4.25m

3.25m


Suitable for wood chips, pellets, planing and saw shavings
Maximum fill height of 5.00 m
Maximum fill height for pressed briquettes and pellets approximately 3.00 m. 
Maximum mounting angle for wood chip 25°
Maximum mounting angle for briquettes and pellets 5°.

  • Designed for each installation
    Each application for the FRA is purpose designed and is purpose built. This allows the effective sweep and the auger feed distance to be correctly designed to the requirements.  


FRA wood chips in auger

       FRA accessories
  • Gavity feed extension tube 1.5m with flnages for material transfer from FRA feed system to Compact TBZ rotary feeder.
  • Gavity feed extension tube 4m with flnages for material transfer from FRA feed system to Compact TBZ rotary feeder.
  • Magnetic separator for installation in conveyor trough