6.9 Grinding with the impact bar insert
For the article numbers, please refer to our homepage or the spare parts
catalogue.
1 Collecting vessel lid
2 Lid seal
3 O-ring 98 x 2
4 Sieve ring
5 Impact bar
6 Rotor
7 Collecting vessel
8 O-ring 98 x 2
9 O-ring 112 x 3
10 Labyrinth disk
To carry out grinding with a process similar to that of a cross beater mill,
there is an optional insert with impact bar (8) and an outer sieve ring
(10).
The rotor (6) operates directly next to the impact bar (5). This increases
the shear stress on the source material. This provides for faster coarse
grinding of brittle source material. Additionally, the temperature load on
the source material for fine milling is significantly lower.
If an existing rotor will be used, only the impact bar and a matching sieve
ring need to be ordered.
Only sieve rings without a reinforced edge may be used for
grinding with the impact bar insert.
The handling of the impact bar insert is the same as for the standard
grinding elements (see
Ä
‘Installing the grinding elements’ on page 27,
Ä
‘Removing the grinding elements’ on page 29 and
Ä
‘Conducting a
grinding operation’ on page 28). The sieve ring is just replaced with the
impact bar (5) and outer sieve ring (3).
The O-ring (4) serves to seal off the sieve ring (3) from the lid (1) of the
collecting vessel. First, the sieve ring (3) is placed over the impact bar (5)
and then the O-ring (4) is pressed into the groove.
In addition to the 6-blade rotor, the 12- or 24-rib rotors may also be
employed. For the order numbers of the different sieve rings, please
refer to the spare parts drawing.
Using the device
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