Fuel Extraction With Hydraulic Push Floor Discharge System; Specification For Push Floor Discharge; Pushrod Discharge; Maximum Dumping Heights - Viessmann VITOFLEX 300-UF Technical Manual

Fuel discharge

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.

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.
Max. permissible dumping height for BD200 fuel
Width
Length 12 m
Length 10 m
Length 8 m
5
Length 6 m
Max. permissible dumping height for BD350 fuel
Width
Length 10 m
Length 8 m
Length 6 m
Max. permissible dumping height for BD450 fuel
Width
Length 10 m
Length 8 m
Length 6 m
Max. permissible dumping height for BD650 fuel
Width
Length 12 m
Length 10 m
Length 8 m
Length 6 m

Pushrod drive specification

Trade name
Type
Piston diameter
Piston rod diameter
Lift
Test pressure
Pressure force at 190 bar (19 MPa) FZD
Pressure force at 190 bar (19 MPa) FZZ
Length from centre of cylinder – piston boss
Viesmann
54
(cont.)
m
m
m
m
m
m
m
m
m
m
m
m
m
m
m
m
m
m
Note
This version of fuel discharge can result in large forces acting on the
building (see chapter "Forces on the building").
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)
2.5 2.25 2.0
3.1 3.6 4.0
3.9 4.3 4.9
5.0 5.5 6.2
6.9 7.7 8.6
2.5 2.25 2.0
2.7 3.0 3.5
3.5 3.9 4.4
4.9 5.4 6.0
2.5 2.25 2.0
2.1 2.4 2.7
2.7 3.0 3.4
3.8 4.2 4.7
2.5 2.25 2.0
1.2 1.3 1.4
1.5 1.7 1.8
1.9 2.1 2.4
2.6 2.9 3.3
mm
mm
mm
bar (MPa)
kN
kN
mm
1.75 1.5 1.25
4.6 5.4 6.4
5.6 6.5 7.8
7.2 8.3 10.0
9.9 11.5 13.8
1.75 1.5 1.25
3.9 4.6 5.5
5.0 5.8 7.0
6.9 8.0 9.7
1.75 1.5 1.25
3.0 3.5 4.25
3.9 4.5 5.43
5.4 6.3 7.52
1.75 1.5 1.25
1.7 2.0 2.4
2.1 2.5 3.0
2.7 3.2 3.8
3.8 4.3 5.2
Pushrod drive
Single
180
90
600
240 (24)
484
362
Type K: 1080
VITOFLEX 300-UF
1.0
8.0
9.8
12.5
17.3
1.0
6.8
8.7
12.0
1.0
5.3
6.79
9.40
1.0
3.0
3.7
4.7
6.5
Twin
180
90
600
240 (24)
484
362
Type L: 1230