Conveying
FAQ for Experts. Answers by Experts.
49
How can material stress be reduced during conveying?
The image illustrates the concept of the control: For a smaller material feedline (ø=45 mm) a reduced blower speed (here: 38 Hz) is sufficient; respectively, an increased blower speed is needed for larger feedline
mo explains how material can be conveyed gently
In issues 35 and 37 we described some different forms of abrasion and signs of wear, as well as listed some possible precautions to reduce wear and abrasion. …
48
What is a diaphragm valve?
In order to convey material, a solenoid valve (above centre) creates a connection via a hose to the conveying vacuum. This sucks in the diaphragm and opens the valve closure (in green). …
47
How does the material get from the storage bin into the conveying material feedline?
Variation of material feeding: suction box with two suction points (left), controlled suction box (right)
mo describes different types of material feeding
The way the material to be conveyed is fed into a material feedline depends heavily on the type of material and the conveying principle. …
46
How can coupling stations be monitored?
Monitored coupling table with RFID-technology – the hose couplings and the lids of the coupling holders at the coupling table are each fitted with a transponder, the read-write sensors are installed into the casing of the coupling holders
mo describes different concepts for a source-destination mapping
In issue 28 we introduced different multipoint conveying systems, including machine-related conveying systems, which are connected to the different material sources via coupling stations (or tables). …
45
How can disturbances in the vacuum supply be avoided?
A standby pump replaces the line pump in case of disturbance or servicing
mo explains measures to maintain the vacuum
Disturbances in a conveying system can lead to expensive production downtimes. …
44
What is to be taken into account with regard to the material discharge?
mo describes various concepts of the material discharge flaps
One task of the material supply is to convey material to the hopper loader on the processing machine. …
43
How is the plastic granulate separated from the conveying air?
By increasing the line diameter of the material line (d1) to the internal diameter of the hopper loader (d2), the air speed (red arrows) decreases, while the air volume (yellow arrows) remains the same
mo reveals the secret of the “suspended plastic granule”
In the broadest sense, operation of a hopper loader can be compared with a vacuum cleaner – but with one significant difference: …
42
How can metallic impurities be eliminated?
The separator shown is installed directly on the extractor of the processing machine. Its sturdy design allows installation of further peripheral units, such as conveying, dosing and mixing units. …
41
How can noise emissions during material handling be reduced?
„Pipe within a pipe system“; the inner pipe is used as the material feed line, the air-filled space in-between the pipes reduces noise emissions and prevents pre-warmed, dried material from cooling (image: …
40
What is a permanent central vacuum?
Example for a permanent central vacuum, installed in motan-colortronic’s new Tech Center in Friedrichsdorf: in the centre two central filters, left two side channel blowers on top of each other
mo explains the characteristics and advantages of a permanent central vacuum
For large productions with numerous material loaders and consequently many delivery points, large throughputs, frequent conveying cycles, and long conveying distances, there are two solutions for automated material supply: …