Freeze-dryer has four configurations (all with pre-freezing function):
Ordinary type-pre-frozen and dried materials;
● Cover type-pre-freeze and dry penicillin bottles filled with materials. After drying, the bottle cap is closed manually in vacuum, which is equivalent to vacuum packaging;
● Multi-manifold common type-materials are pre-frozen in special bottles and connected with the freeze-drying hood through rubber valves. In the freeze-drying process, drying bottles made of different materials can be replaced at any time by switching valves;
Multi-manifold capping type-the pre-frozen penicillin bottle can be freeze-dried and capped, and the plexiglass cover can be used to hang the drying bottle to improve the freeze-drying efficiency;
I. Characteristics and technical indicators
1, main features:
(1) This machine adopts imported compressor, which has rapid refrigeration and low freezing temperature;
(2) Digital display of temperature and vacuum degree is accurate and intuitive;
(3) The drying chamber adopts a colorless and transparent plexiglass cover, so that the sample is clear and intuitive, and the whole freeze-drying process can be observed;
(4) The connection between the vacuum pump and the main engine adopts KF quick connector of international standard, which is simple and reliable;
(5) With the function of pre-freezing, put the stainless steel tray filled with materials on the pre-freezing rack, put the pre-freezing rack into the cold trap, cover the heat preservation cover for 4-6 hours, and then dry it. The pre-freezing function saves the time and cost for users to put materials into the low-temperature refrigerator;
(6) The machine uses a vacuum pump to prevent oil from pouring, thus avoiding sudden power failure of materials.
Oil pollution;
(7) The machine has stable performance, simple operation and low noise.
I. Conditions of use
1. Normal working conditions: ambient temperature: 10℃ ~ 30℃
Relative humidity: ≤80%
Power supply voltage: single-phase 220v10%? 50 Hz
The working environment should be free of conductive dust, explosive and corrosive gases and strong electromagnetic interference.
2. Transportation and storage conditions: ambient temperature: -40℃ ~ 50℃
Relative humidity: ≤80%
The storage environment should be well ventilated and free of corrosive gases.
3. The safety level is Grade I and Grade II. ..
First,? Freeze drying operation
(1) Check whether the air dryer is normal (such as whether the main power supply is connected, whether the vacuum pump is connected to the vacuum tube of the main engine, whether the vacuum pump power supply is connected, whether the vacuum pump oil is above the center line of the visible liquid, and whether the sealing ring is clean. )
(2) Turn on the main power switch, click the screen to enter the main interface, click the compressor button in the lower left corner, and click Open. The compressor will start for about 90 seconds, and wait for more than 30 minutes for the cold trap champion to be completely pre-frozen.
(3) At this time, you can put the material on the pre-freezing rack, then put it in a cold trap for rapid pre-freezing (the thickness of the material does not exceed 10mm, and the pre-freezing time is 4-6 hours), and cover it with a heat preservation cover. If pre-freezing is not needed, you can skip this step. Note: If the material thickness exceeds 10mm, the freeze-drying time will be longer.
(4) Take the pre-frozen tray out of the cold trap, quickly put it into a clothes rack, put the clothes rack above the cold trap (there is a movable clothes rack base above the cold trap), and cover it with an plexiglass cover, and the lower end of the cover should completely contact with the O-ring; Note: Vacuum grease should be applied to the groove and sealing ring before starting. At this time, you can take off the cover directly and start vacuumizing, otherwise the vacuum grease will be smeared for a long time and the frozen sample will melt.
(5) At this time, check whether the bleeder valve on the right side of the fuselage is in a deflated state, and vacuumizing is not allowed in the deflated state. If the vacuum head is plugged in, please press the stainless steel button of the vacuum valve on the right side of the main engine to make the valve core pop up (it is closed at this time), and then press the panel vacuum pump to open the keyboard and turn on the vacuum pump. A single pump is not directly connected to the vacuum pump of the host power supply, so the pump needs to be turned on and off manually. At this time, the vacuum of the control panel cannot be used; After 30 minutes, it fell below 15PA.
(6) 1, common type
After 24 hours, the material has been completely dried by visual inspection, and the valve core is inserted at this time.
When the stainless steel button in the valve body pops up, the vacuum valve opens and inflates (connectable
Fill the connecting pipe with inert gas), and then press the panel vacuum pump immediately?
Press the key to stop the vacuum pump until the vacuum gauge shows 1 10KPA.
Then take off the plexiglass cover and take out the tray from drying; main points
The control system turns off the compressor and the drying process ends.
? 2. Ordinary gland type
After 24 hours, the visual material has completely dried, and the glass is rotated at this time.
Cover the handle above the lid and seal the penicillin bottle or other sealable materials.
The packaged bottle body is pressed and packaged. Then insert the valve core into the stainless steel press of the valve body.
When the button pops up, the vacuum valve opens to inflate (the connectable pipeline is inflated with inert gas).
Body), and then immediately press the panel vacuum pump button, the vacuum pump stops.
Run, when the vacuum gauge shows 10 1KPA, take off the plexiglass cover, take out the tray from the drying rack, turn off the compressor through the point control system, and dry.
The drying process is completed.
? 3. Manifold type
The manifold glass cover needs to be plugged with a glue gun. Glue gun switch (plastic,
White) is closed in the vertical state and opened in the horizontal state. Hang a bottle
When freeze-drying, the glue gun should be opened. If you want to pull out one of the hooks.
Just turn off the glue gun and pull it out. Note: Freeze-drying is completed or started.
You can't hang the bottle at first, and you can't move the glass cover.
If the next drying is needed, it needs to wait for more than 3 hours until the ice in the cabin is completely melted and discharged from the vacuum valve.
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Details: www.zhixinlab.com
? www.zjzxyq.com