Model TMAX-JK-DZF-6020
Application
It is used for drying, baking, melting wax and sterilizing crops such as factories, mining
enterprises, universities, scientific research and various laboratories.
I. Overview of Structure
DHG-202, 101 series of blast drying boxes (hereinafter referred to as drying boxes). The drying
box is composed of three parts: the box body, the electric heating blast system and the temperature
control system. The inner chamber (studio) and outer shell of the box are composed of
high-quality steel plate surface spraying treatment, bright color, beautiful and generous. The studio
is supported by mirror stainless steel plate or galvanized plate according to user's demand. The
height of the partition made of stainless steel wire can be adjusted indoors, and two pieces are
attached when leaving the factory (users need to add another order). Fill superfine glass wool
between inner and outer case as insulation layer. There is a large area of double-layer toughened
glass inspection window in the box, which can clearly observe the heating and drying items in the
box. The joint of the studio and the box door is equipped with a heat-resistant silicone rubber
sealing ring to ensure the tightness of the studio. Power switch, temperature display screen,
temperature controller and fan switch are all installed on the left side of the box for easy operation
and maintenance.
The electric heating blast system is composed of fan, air duct and electric heating parts. The
electric heating pipe (or electric heating wire), fan and other parts are installed at the bottom of the
studio.
The temperature control system consists of a temperature controller, a power tube (or electric
heating wire) and a temperature sensor.
II. Working Principle
The temperature controller is composed of intelligent digital control circuit composed of
integrated circuit devices and LED digital display circuit.
When K-type resistance is used as a sensor to measure the temperature in the working room, the
output resistance signal is proportional to the temperature (100_at 0 C). The signal is amplified by
the digital control circuit in the thermostat and sent one way to the LED display circuit to display
the measured temperature. The other way is sent to the comparator to compare with the set value.
When the two have positive deviation, the output resistance signal is proportional to the
temperature (100_at 0 C). Digital control circuit sends trigger signal, triggers bidirectional
thyristor conduction, and outputs electric power to heat the heating tube (or heating wire). When
the deviation decreases to zero, double high thyristor closes, stops output electric power, heating
tube (or heating wire) stops heating, and the output of heating in digital control circuit isWebsite: www.tmaxcn.com
controlled by PI. The D regulation mode has the functions of adjusting the output power and
correcting the linearity of the system temperature measurement.
The heating pipe (or electric heating wire) is installed at the bottom of the box body, and a fan (the
bottom of 101 blast drying box) is installed at the same time at the heating pipe (or electric heating
wire). When the machine is turned on, the fan is always in operation. Through impellers and air
ducts, the cold air flow in the working room flows in from all around, and the hot air flow flows
out from the middle, so that the indoor temperature is uniform.
III. Technical Indicators
Note: The above data are measured with a standard mercury thermometer (the mercury tip is
placed in the geometric center of the working room) with an accuracy of 0.1 C and a relative
humidity of less than 85% at 25 C.
IV. Conditions of Use
1. Ambient temperature: 5-40 degrees Celsius
2. Relative humidity of air: not more than 85%
3. Power supply AC220V + 22V, frequency 50HZ + 1HZ, 380V (three-phase four-wire)
4. There is no corrosive gas, no strong vibration source and strong electromagnetic field around.
V. Usage
1. Put the articles that need to be dried into the drying box. There should be some space in the
upper, lower and around to keep the airflow in the working room unblocked and close the door of
the box.
2. Turn on the power supply and the fan switch. At this time, the power indicator light is on, the
motor is running, and the thermostat shows that after the "self-check" process, the PV screen
should show the temperature measured in the working room, and the SV screen should show the
setting temperature to be dried in use. At this time, the drying box will enter the working state.
3. After drying, if you need to continue replacing the drying articles, turn off the fan switch before
replacing the opening door to prevent the drying materials from blowing off. After replacing the
drying materials, close the box door, then open the fan switch, so that the drying box can enter the
drying process again. If you do not take out the articles immediately, turn off the blower first, and
then turn on the power switch. Turn off to keep the drying in the box. If you don't continue drying,
turn off the power switch. After the studio is cooled to room temperature, take out the drying items
in the box and dry the studio.
(Note: When taking out the drying box, be careful of scalds)
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