Wood chip heating

ECO fuel extraction system

Energy-saving and cost-cutting

Fuel extraction system

Energy-saving and cost-cutting

ECO fuel extraction system - robust and reliable

Thanks to a low drive output of just 0.18 kW (0.30 - 0.38 kW for 70 - 330 kW boilers) and a robust, high-efficiency spur gear, the fuel extraction system saves a huge amount of energy and therefore lowers electricity costs. You can save as much as 67% in electricity costs compared to those for conventional fuel extraction systems. With the excellent gear efficiency of over 90%, it clearly outperforms conventional worm gears. The new modular design ensures that the auger, along with its trough and removable cover, is easy to use.

ECO fuel extraction system

Cross section and specifics

1 - Bicameral rotary valve in Z-form
2 - Ball coupling
3 - Breaker box
4 - FE system extensions (modular design)
5 - Special spring blade layout
6 - Effective wood chip inlet bracket
7 - Extraction auger and shaft

8 - No-load disc
9 - Eco fuel extraction gear unit (spur gear)
10 - Stainless steel stoker auger (and pipe) with STM temperature monitoring
11 - Drive motor for the stoker auger and rotary valve
12 - Drive motor for the extraction auger and agitator
13 - Safety cover with a reverse function
14 - Floor agitator with spring blades

Worm gear

friction loss
low efficiency

Spur gear

low friction loss
high efficiency

ECO fuel extraction system

Key components

Bicameral rotary valve in Z-form

Chamber depth 18 cm / 22 cm
100% burn-back protection guaranteed
For long pieces of wood
Easy to replace
Saves a lot of effort
Has hardened cutting edges

Modular design

Planning flexibility
Auger extensions of 300 - 2000 mm
Easy to transport and install
Quicker and cheaper to maintain
Individual auger parts can be replaced

Eco fuel extraction gear unit

Maximum efficiency
Energy-saving and highly efficient
Durable

Hargassner no-load disc

Effort required halved
Disc remains still until the spring blades are retracted under the disc
No hollow spaces created
For extraction systems with diameter 4.5 m and 5 m

New auger and shaft

Generously dimensioned
3 shaft sizes: 140 mm / 180 mm / 260 mm
Optimized for boiler type
No fuel jams
Suitable for wood chips/pellets

Wood chip inlet bracket

Optimum fuel supply
Ideal amount of fuel in the auger shaft
Max fuel storage room emptying
Less effort required and less wear and tear

Fuel extraction system

Spring blade layouts

3-blade system

Special spring blade layout up to diameter 4 m
Power-saving gear ratio 1:16
Shaft 140 mm = Eco-HK 20-120
Shaft 180 mm = Eco-HK 130-330 and Magno UF/VR 250-400

4-blade system

Special spring blade layout up to diameter 4.5 - 5 m
Hargassner no-load disc
Power-saving gear ratio 1:25
Shaft 140 mm = Eco-HK 20-120
Shaft 180 mm = Eco-HK 130-330 and Magno UF/VR 250-400

3-blade hinged arms

Diameter of 5.5 m and 6 m
Power-saving gear ratio 1:25
Shaft 260 mm = Magno UF/VR/SR 450-1400

Compatibility

Find the right fuel extraction system for your biomass boiler

Matching Hargassner spring blade systems to possible wood chip heating models and shaft sizes

Spring blade layout	FE type	Eco-HK 20-120	Eco-HK 130-330	Magno UF/VR 250-400	Magno UF/VR/SR 450-1400
Fuel extraction system 3-blade system (shaft 140 / 180)	200, 250, 350, 300, 400	yes / no	no / yes	no / yes	no no
Fuel extraction system 4-blade system and no-load disc (shaft 140 / 180)	450, 500	yes / no	no / yes	no / yes	no no
Fuel extraction system 3-blade hinged arms (shaft 140 / 180)	550, 600	yes / no	no / yes	no / yes	no no
Fuel extraction system 3-blade hinged arms (shaft 260)	450, 500, 550, 600	no	no	no	yes