Material Handling
Systems
MHS
Material Handling Systems (MHS)
Material handling systems are an important part of an extrusion line. Their
job is to transport the raw material from point A to point B.
“A chain is only as strong as ist weakest link“. That means, that if the
transport system doesn‘t work properly, the extrusion line is unable to
deliver the requested quality.
PROCESS CONTROL material handling systems are calculated by a
simulation software. In this way we ensure to provide our customers with
an economic and reliable solution.
2
Material Handling Systems (MHS)
Different layouts:
1)
Standard, centralised MHS
2)
Compact MHS with RX recievers and PCC-control „Vacu-Bloc“
3)
Decentralised solution with RSD self conveying hopper loader
3
Material Handling Systems (MHS)
1)
Standard, cetralised MHS
4
Material Handling System MHS (flow sheet)
5
Vakuum power units
SB Ring Blowers
Double-MM Vacuum
Power Unit
VE Vakuum Pumps
Continuous run
valve
A big variety of vacuum pumps are available.
Please use the MHS data sheet to collect all
necessary data for sizing the pump and the
other components of the system
SB ring blower
with control panel
6
RN-Series Vacuum Reciever
Pellet
Screen
Pellet
Screen
(quick
in/out)
(Quick
In/ Out)
Vacuum
Vacuum
Connection
Connection
Material
Material
Inlet
Inlet
Proximity
Proximity
Switch
Switch
Flapper
Flapper
or
or
Swing Gate
Gate
Swing
Electr.
Electric
Connection
Connection
Box
Box
7
RN-Series Vacuum Reciever
Special solution for regrind or other
materials that intend to build
bridges:
• Steep wall hopper
• Mechanical bridge breaker
8
Sequenzing Panels
PCC-control panel
“Vacu-Bloc”
Different versions of sequenzing panels are available. Anyway it is
very easy for the operator to activate/deactivate the individual
stations.
9
RDJ Dust Collector
Step 1:
Cleaning Filter I
Step 2:
Conveying Cyclus
To
vacuum pump
I
II
I
II
Vacuum line
to receivers
Pure Air
Air + Dust
Dust
Step 3:
Cleaning Filter II
I
RDJ dust collector as a central unit to
• minimize labour costs for manual filter exchange and
• downtimes of the line
• cost saving for non recyclable filters at pump inlet
Self cleaning by inversion of air flow
Step 4:
Dust dump
II
I
II
10
Compact Material Handling System
2)
Compact MHS with RX recievers and
PCC-control panel “VacuBloc”
a cost-effective alternative
11
Compact Material Handling System:
Components
•
Vacuum power unit: SB ring blower or DO turbine
• RX vacuum recievers
• ”VacuBloc” multi vacuum control valve control
12
Compact Material Handling System
Control panel
Vacuum
power unit
RX vacuum reciever
with
valve control
13
Compact Material Handling Systems: examples
14
Compact Material Handling Systems: examples
15
Material Handling Systems (MHS)
3) RSD –
Self Loading Vacuum Reciever
16
RSD – Self Loading Vacuum Reciever
Conveying rate 350 kg/h at 3 m vertical and 3 m horizontal.
Pressure cleaning of security screen.
 Maintenance-free; brushless, 3 stage turbine 1,1 kW
 Noise level 72 dB(A) according to DIN 45635
 Separation of particles from conveying air by cyclone principle
 Stop of conveying cycle by proximity switch
 Integrated control with alert (horn + light)
 Option: Sight-glass
17
RSD – Self Loading Vacuum Reciever
RSD can be mounted
either on a GUARDIAN®-blender or an X-Series blender
18
Calculation Sheet
PROCESS CONTROL GmbH
PROCESS CONTROL GmbH
Industriestrasse 15
63633 Birstein
Germany
Industriestrasse 15
63633 Birstein
Germany
Vacuum Conveying Calculations for Pellets
With Horsepower as a Variable
CUSTOMER: Example
PC -Proposal 07.000
SPECS:
Vacuum Conveying Calculations for Pellets
With Horsepower as a Variable
CUSTOMER: Example
PC -Proposal 07.000
SPECS:
CONVEYING RATE:
NET REQUIRED:
SAFETY MARGIN:
GROSS RATE:
500 kg/h
1,70
850 kg/h
DISTANCES:
HORIZONTAL:
VERTICAL:
NO OF ELLS:
AIR ONLY LENGTH:
AIR ONLY ELLS:
20 m
5m
3
15 m
5
E1
E2
E3
E4
SUM E
=
=
=
=
=
1,80
0,27
0,75
12,00
14,81
MATERIAL LOSS =
AIR LOSS
=
FILTER LOSS =
TOTAL LOSS
INCHES H2O =
50,73
45,39
4,00
100,12
HORSEPOWER:
KILOWATTS:
TUBE SIZE:
AVG V':
FRIC. FACT:
kW USED:
3,00
2,2
50,8 mm
2,97 m3/min
178,29 m 3/h
0,255
2,20
RESULTS:
mm Hg =
187,00
mbar =
254,32
Max Rate =
995 kg/h
@ FOR VEO3, 2.2 kW
Pump Max =
203,20 mm Hg
Pump Max =
276,35 mbar
% SAFETY =
8,66%
P Ratio =
1,33
ICFM
=
50,8 mm
63,5 mm
Area (Mat. line):
Air speed (Mat. line):
0,00172 m²
28,8 m/s
Pipe work with 3 elbows 90°
=> VE03 pump O.K.
500 kg/h
1,70
850 kg/h
DISTANCES:
HORIZONTAL:
VERTICAL:
NO OF ELLS:
AIR ONLY LENGTH:
AIR ONLY ELLS:
20 m
5m
4
15 m
5
E1
E2
E3
E4
SUM E
106
Material line size:
Vacuum line size:
CONVEYING RATE:
NET REQUIRED:
SAFETY MARGIN:
GROSS RATE:
2,0 "
2,5 "
Code
C
D
=
=
=
=
=
1,80
0,27
0,75
16,00
18,81
MATERIAL LOSS =
AIR LOSS
=
FILTER LOSS =
TOTAL LOSS
INCHES H2O =
64,43
46,98
4,00
115,42
HORSEPOWER:
KILOWATTS:
TUBE SIZE:
AVG V':
3,00
2,2
50,8 mm
2,97 m3/min
178,29 m 3/h
0,255
2,20
FRIC. FACT:
kW USED:
RESULTS:
mm Hg =
215,56
mbar =
293,16
Max Rate =
763 kg/h
@ FOR VEO3, 2.2 kW
Pump Max =
203,20 mm Hg
Pump Max =
276,35 mbar
% SAFETY =
-5,73%
P Ratio =
1,39
ICFM
=
112
Material line size:
Vacuum line size:
50,8 mm
63,5 mm
Area (Mat. line):
Air speed (Mat. line):
0,00172 m²
28,8 m/s
The same system, but 4 instead of 3 elbows
=> VE03 pump not sufficient
2,0 "
2,5 "
Code
C
D
19
Basics for calculation (friction in tubes)
Straight tube:
only a few particles hit
the inner wall of the
tube
It is necessary to know the number of elbows
and the length of the tube system as detailed as
possible because of their influence on the
pressure loss and therefore the sioze of the
vacuum pump.
1 elbow = approx. 15 m of straight tube
Elbow:
Nearly all particles hit the
inner wall of the tube.
They are decelerated and
have to be accelerated
again, which results in a
significant pressure loss
(and in consequence a
loss of energy)
20
Data recording for preparing a quotation:
In this data sheet all necessary data concerning
throughput and conveying distance are caught
21