Rieter

Rieter VarioSet

Index

All performance and treatment alterations on both machines mentioned can be made very easily and electronically during the normal operation of the machine from outside the machine without any stoppages.

An easily understandable and clearly arranged display is available at one side of the machine for this purpose. This display includes a special setting arrangement called VarioSet (Fig. 65). It enables operating personnel to adjust the degree of cleaning and the cleaning efficiency (to a certain extent the unavoidable loss of fibers) exactly to the raw material and the requirements of the mill. All that is needed is to push a few buttons on the operating panel at the side of the machine. Various setting positions can be fixed on the screen, e.g. for the degree of cleaning from 1 to 10 (marked here in the example from A to Z), and for cleaning efficiency from 0.0 to 1.0 (marked here from A to X).

VarioSet:

Changes in the extraction of trash and good fibers when changing the settings from A to X, Z till H.

Example:

Indian cotton: 1 1/8 inch, 2.2% trash

From/to
Setting A
A→X
A→Z
A→H

Waste amount

0.62
0.80
0.65
1.08

Trash [%]

90
78.5
67
66
Good fibers [amount]
0.07
0.22
0.32
0.55
Good fibers [%]
10
21.5
33
34
Ratio of trash/fibers
9:1
3.6:1
2:1
2:1

The example from the  UNIclean B 12 clearly shows that a change in the horizontal direction (A to Z, opening of the grid) results in a far higher loss of fibers than the change in the vertical direction (A to X, increasing roller revolutions). At the display it is possible to choose any point of operation adjustment within the complete cleaning field (the square A/X/Z/H): see Fig. 65.

Fig. 65 – VarioSet cleaning field

Fig. 66 – Practical examples and their effect on waste composition