2.2.1 Operating principle
The fast comminution capability of the PULVERISETTE 14 premium line is
due to the extremely high speed of the rotor, which is made of stainless,
tempered steel. With a rotational speed of up to 111 m sec
-1
, the impact
energy lies in the range of pin mills, known for their high grinding
capacity. Additionally, the sharp-edged teeth of the rotor work in combi-
nation with the installed sieve to grind the sample by shearing - similar
to high speed cutting mills. After passing through the sieve, the ground
sample is collected in a stainless collecting vessel.
The source material is fed through a funnel into the grinding chamber
and accelerated outwards radially by the high speed of the rotor. There,
the material is caught by the impact rotor, ground, and then discharged
through the sieve ring into the collecting vessel at a defined particle feed
size.
To ensure continuous flow of the sample, the vibratory feeder LABOR-
ETTE 24 is connected to the PULVERISETTE 14 premium line and the free
end of the channel is placed over the input funnel of the PULVERISETTE
14 premium line. Depending on the model, the feed rate can be regu-
lated by the mill to always feed the right amount of sample for optimal
comminution. If the amount of source material is too large, the feeder is
automatically decelerated.
2.2.2 Speed control
By tapping the number field in the "Speed" menu item, the rotational
speed can be preset to between 6000 - 22000 rpm in increments of
1000, and in this way be optimally adapted to the requirements of the
grinding of the samples. The speed is readjusted for each load.
2.3 Obligations of the operator
Before using the PULVERISETTE 14 premium line, this manual is to be
carefully read and understood. The use of the PULVERISETTE 14 pre-
mium line requires technical knowledge; only commercial use is per-
mitted.
The operating personnel must be familiar with the content of the oper-
ating manual. For this reason, it is very important that these persons
actually receive the present operating manual. Ensure that the operating
manual is always near the device.
The PULVERISETTE 14 premium line may exclusively be used within the
scope of applications set down in this manual and within the framework
of guidelines put forth in this manual. In case of non-compliance or
improper use, the customer assumes full liability for the functional capa-
bility of the PULVERISETTE 14 premium line and for any damage or injury
arising from failure to fulfil this obligation.
Safety information and use
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