5.5 Fuel extraction with hydraulic push floor discharge system
Specification for push floor discharge
Pushrod discharge
The fuel discharge with pushrods is suitable for rectangular fuel
stores of various dimensions.
The forward and return strokes of the pushrods cause the vanes to
discharge the fuel from the fuel store and push it into a further con-
veyor device (push floor screw conveyor). The forward and return
strokes are achieved with a hydraulic drive.
The number of pushrods is subject to the fuel store width and the
required dumping height. Subject to fuel weight and fuel store length,
pushrods of different width are used. The pushrod vanes are welded
to the pushrod during installation. Retaining profiles fixed to the floor
are attached between the pushrod vanes. The drive cylinder is anch-
ored in the foundation with a special cylinder retainer.
Note
This version of fuel discharge can result in large forces acting on the
building (see chapter "Forces on the building").
Maximum dumping heights
Number and length of the pushrods
Applies to pushrod discharge with
■ Pushrod drive, individual
■ Pushrod drive, twin
Note
Drive-over pushrod discharge:
A drive-over pushrod discharge requires a material cover of at least
40 cm.
Maximum permissible dumping heights
The max. permissible dumping heights are stated as a function of
pushrod width and length and the fuel.
A distinction is made between the following fuels:
■ With a poured weight ≥ 200 kg/m³ (BD200)
■ With a poured weight ≥ 350 kg/m³ (BD350)
■ With a poured weight ≥ 450 kg/m³ (BD450)
■ With a poured weight ≥ 650 kg/m³ (BD650)
Max. permissible dumping height for BD200 fuel
Width
m
2.5
2.25
2.0
1.75
1.5
1.25
1.0
Length 12 m
m
3.1
3.6
4.0
4.6
5.4
6.4
8.0
Length 10 m
m
3.9
4.3
4.9
5.6
6.5
7.8
9.8
Length 8 m
m
5.0
5.5
6.2
7.2
8.3
10.0
12.5
Length 6 m
m
6.9
7.7
8.6
9.9
11.5
13.8
17.3
Max. permissible dumping height for BD350 fuel
Width
m
2.5
2.25
2.0
1.75
1.5
1.25
1.0
Length 10 m
m
2.7
3.0
3.5
3.9
4.6
5.5
6.8
Length 8 m
m
3.5
3.9
4.4
5.0
5.8
7.0
8.7
Length 6 m
m
4.9
5.4
6.0
6.9
8.0
9.7
12.0
Max. permissible dumping height for BD450 fuel
Width
m
2.5
2.25
2.0
1.75
1.5
1.25
1.0
Length 10 m
m
2.1
2.4
2.7
3.0
3.5
4.25
5.3
Length 8 m
m
2.7
3.0
3.4
3.9
4.5
5.43
6.79
Length 6 m
m
3.8
4.2
4.7
5.4
6.3
7.52
9.40
Max. permissible dumping height for BD650 fuel
Width
m
2.5
2.25
2.0
1.75
1.5
1.25
1.0
Length 12 m
m
1.2
1.3
1.4
1.7
2.0
2.4
3.0
Length 10 m
m
1.5
1.7
1.8
2.1
2.5
3.0
3.7
Length 8 m
m
1.9
2.1
2.4
2.7
3.2
3.8
4.7
Length 6 m
m
2.6
2.9
3.3
3.8
4.3
5.2
6.5
Pushrod drive specification
Trade name
Pushrod drive
Type
Single
Twin
Piston diameter
mm
180
180
Piston rod diameter
mm
90
90
Lift
mm
600
600
Test pressure
bar (MPa)
240 (24)
240 (24)
Pressure force at 190 bar (19 MPa) FZD
kN
484
484
Pressure force at 190 bar (19 MPa) FZZ
kN
362
362
Length from centre of cylinder – piston boss
mm
Type K: 1080
Type L: 1230
Fuel discharge
(cont.)
54
Viesmann
VITOFLEX 300-UF
5
5682428