SCHENCK PROCESS GmbH
Apron Weighfeeder MULTIDOS
The Application:
The extraction and weighing of difficult materials from a bin:
Clay
Gypsum
Limestone
...
The standard solution:
Apron feeder
+
Heavy Belt Weighfeeder
The idea: Integrate both units into one
Reduce number of components
Reduce costs
The solution:
Integrate existing weighing technology into an existing apron feeder construction
weighing - feeding - screening
SCHENCK PROCESS GmbH
MULTIDOS, direct weighing technology at its best
Measuring track with direct weighing
technology implanted into an apron feeder
Self-cleaning plates
Beltwidth up to 1600 mm
Feedrates up to 475 m3/h (600t/h)
Accuracies +/- 1%
Max. material temperature: 250 C
Optional needle gate integrated in frame
weighing - feeding - screening
Apron Weighfeeder MULTIDOS-VDP
쮿 Apron weighfeeder for
difficult-to-extract bulk solids
쮿 Combination of bin extraction
and feeding ensures low
investment cost
쮿 High-tech direct-weighing
technology ensures high
feeding accuracy
쮿 Self-cleaning extraction plates
쮿 Pin gate can be integrated into
frame
쮿 Particular suitability for
applications in the cement and
steel industries
Application Construction Working principle
Particularly in the cement and steel The standard equipment of the apron The apron weighfeeder is designed as a
industries, the need often occurs to weighfeeder comprises: speed-controlled apron conveyor with
discharge bulk solids which are difficult to 쮿 sturdy mechanical equipment integral direct-weighing equipment for the
extract, e.g. marl, clay, gypsum, trass or determination of the weight of the belt
쮿 feed hopper with high-adjustable slide
sludge from bins, and to feed them into load. The speed of the circulating belt is
gate
production processes in a controlled measured with the help of a frequency
manner. 쮿 transport belt transducer.
Until now, apron conveyors were used for 쮿 direct-weighing equipment From these two measured variables, the
the purpose, either as a prefeeder for a 쮿 AC geared motor actual feed rate is determined. The belt
weighfeeder, or in purely volumetric 쮿 frequency transducer speed is then controlled as a function of
mode. the control difference (difference between
쮿 precabling for easy connection to set point and actual value), so that the
Schenck apron weighfeeders combine the electronics
two functions of extraction and exact feed rate set point is maintained.
The transport belt consists of overlapping
gravimetric feeding, thus providing the Smooth direct extraction of the bulk solid
sheet-metal plates. This shape ensures
following advantages: is ensured by the buckle plate design of
smooth extraction of sticky and moist bulk
쮿 Minimal investment and follow-up cost the transport belt and the optimum
solids.
(i.e. operation and maintenance cost) feeding cross section of the feed hopper.
The following accessories are available for The buckle plate belt is guided along a
쮿 Easy installation and low space different applications: rail over rollers connected to each other
requirements
쮿 pins for the pin gate integrated into the by means of a chain. This transport rail
쮿 Improved accuracy and higher quality apron weighfeeder, for shutting off the includes a weighing rail for determining
of the end product compared to feed hopper the belt load.
volumetrically operating extraction
apron conveyors. 쮿 discharge aid roller for homogenising At the discharge point, the pockets of the
the material discharge buckle plates increase thus releasing any
쮿 scraper conveyor for removing dropped material that has stuck. This self-cleaning
material method ensures excellent extraction from
the storage bin, and reduces material
losses underneath the apron feeder to a
minimum.
BV-D 2043GB
Dimensions (mm)
Apron weighfeeder
400 C 400
Front view
L
Side view M
(Pulley centres up to 6560)
T
1450
K 2240
Side view
(Pulley centres over 7040) L
M
T
N
1450
1450
L
M
T
2240 N K 2240
Dimensions Plate width (B) dependent dimensions [mm]
1000 1200 1400 1600
C 900 1100 1300 1500
T 2250 2500 2500 2500
Dimensions Pulley centre (M) dependent dimensions [mm]
5120 5600 6080 6560 7040 7520 8000
K 2140 2620 3100 3580 1820 2300 2780
L 6698 7128 7658 8138 8618 9098 9578
N 3785 4265 4745 5225 5705 6185 6665
Technical Data
Apron weighfeeder MULTIDOS-VDP
Gravimetric feed rate up to max. 650 t/h
Volumetric feed rate up to max. 475 m3/h
Accuracy (related to actual value) ± 1% in a range of 10 : 1
Belt speed max. 0.3 m/s
Material temperature max. 80° Celsius
Min. belt load 230 kg/m
Plate width 1000 mm, 1200 mm, 1400 mm, 1600 mm
Weight 6.2 t to 14.9 t
The following is a list of pre-defined standard types, chosen mainly for optimum conditions of extraction. These standard variants are
suitable for a wide range of applications.
Standard variant Plate width Pulley centre Bulk density Feed rate Weight
MULTIDOS [mm] [mm] [t/m3] [t/h] [t]
VDP 1051 1000 5120 1.4 max. 300 t/h 6.2
VDP 1251 1200 5120 1.4 max. 400 t/h 7.3
VDP 1451 1400 5120 1.4 max. 500 t/h 8.5
VDP 1651 1600 5120 1.4 max. 650 t/h 9.7
Options Ordering information:
Beyond the standard scope of supply, a For smooth and speedy processing of
wide range of useful options are available: your order, please let us have the
쮿 Special dimensions available upon following information:
request;
쮿 Pins for the pin gate for shutting-off the 쑺 Bulk solid .................
feed hopper;
쑺 Bulk density ................. [t/m3]
쮿 Scraper conveyor as a collecting belt
for material residues underneath apron 쑺 Material temperature................. [°C]
feeder;
쮿 Discharge aid roller for homogenising 쑺 Feed rate ................. [t/h]
the material discharged.
쑺 Pulley centres ................. [mm]
