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13. Operating principle
Operating principle
12. Please refer to system diagram
。
Use containers to deliver the solvent to the spray nozzle
⑩
through the solvent delivery pump
⑨
.
The compressed air generated from the compressors goes through the needle valve
⑪
and adjusted
into proper pressure, then deliver to the spray nozzle. Blended with the samples at the top of nozzle,
and then spray the samples into the drying chamber
④
.
Meanwhile, use the blower
⑧
to intake air into the unit. The heater
③
reaches the set temperature.
After the hot wind intake into the drying chamber, it contacts with the sample liquids, then dry the
samples immediately.
The particles and dried samples will be dried further, and then it will be delivered to the cyclone
⑥
.
Inside the cyclone it was separated with evaporated part, then goes into the product catcher
⑦
.
The evaporated water will exhausted to outside through the blower.
And then, the intake outside air will go through the wall of upper chamber
⑳
by cold wind valve
(manual valve)
⑮
.
This can prevent the powder from attaching to the upper chamber.
The temperature condition for testing displays on the temperature adjuster through the inlet
temperature sensor and outlet temperature sensor. The temperature can be recorded by installing a
temperature recorder on the temperature output terminal. In addition, the air flow of the dry samples
can be displayed through the by-pass dry air flow meter
②
which was generated from the mesh
tube
①
.
When the mesh of the nozzle head is clogged, please operate the NEEDLE KNOCKER switch on
the touch panel, start the magnetic valve
⑬
, the needle inside the nozzle moves up and down to
remove the clogs in the mesh. Moreover, when there are serious powders attachments on the nozzle
head; operate the nozzle blower switch, start magnetic
⑭
, so that the compressed air blows to the
nozzle head to clean away the attachments.
In addition, after the test has finished, please operate the head switch, start the magnetic valve
⑯
,
lift the upper frame through the air tank to open the upper part of the drying chamber for cleaning.