Vacuum glove boxes are widely used in industries that require high gas purification. Although the design of the current glove box is more reasonable and easy to operate. However, the structure in the glove box is complex, there are many important parts, and the operation is slightly improper, which may cause losses to your experimental results. This article introduces you how to use the vacuum glove box correctly, as well as the precautions for novices when operating the glove box.
One. Work before operation:
1. Check whether there is nitrogen in the nitrogen cylinder. The nitrogen should be replaced in time, and the output pressure of the nitrogen should be set to 0.5mpa.
2. Check whether the vacuum pump is turned on normally.
3. Check whether the loop in the glove box is open. (Open one of the purification column-I or purification column-II)
4. Check that the upper limit pressure in the setting should be +1, and the lower limit pressure should be 0
5. Check whether the oxygen and dew point are normal (the oxygen is below 0.1ppm, and the dew point is above -40)
6. The vacuum pump of the antechamber should be in a normally open state
two. Operation of main and mini antechamber: (main antechambers generally enmain parts, mini antechamber generally put tools)
Antechamber
Put the items outside the glove box inside
1. Close the main antechamber door in the glove box tightly
2. Open the door outside the antechamber
3. Put in the items
4. Close the door outside Antechamber tightly
5. Evacuate to -1.0 (press the green button at the bottom right corner of the antechamber for evacuation, and press it without releasing it.)
6. Release the nitrogen gas to 0 (press the orange button at the bottom right corner of the antechamber to release the nitrogen gas, and do not release it.)
7. Open the main antechamber door in the glove box and take out the items
Take the items in the glove box out
1. Close the two doors of Antechamber tightly
2. Vacuum to -1.0 (press the green button in the lower left corner of the antechamber to vacuum, press it and not release it.)
3. Release the nitrogen to 0 (press the orange button in the lower left corner of the antechamber to release the nitrogen, and press it without releasing it.)
4. Open the door inside the antechamber and put the items in the antechamber
5. Close the door inside the antechamber tightly
6. Open the door outside the antechamber to take out the items.
7. Close the door outside the antechamber tightly.
Antechamber
Put the items outside the glove box inside
1. Close the small antechamber door in the glove box tightly.
2. Open the door outside the small antechamber.
3. Put in the items.
4. Close the door outside the small antechamber tightly.
5. Clean so that the inside of the small compartment is at -0.1 (turn the handle outside the small compartment to clean).
6. Exhaust air so that the inside of the small compartment is at 0 (pull the handle outside the small compartment to exhaust).
7. Open the small compartment door in the glove box and take out the items.
Take the items in the glove box out
1. Close the two doors of Kantechamber tightly.
2. Clean so that the inside of the small compartment is at -0.1 (turn the handle outside the small compartment to clean).
3. Exhaust air so that the inside of the small compartment is at 0 (pull the handle outside the small compartment to exhaust).
4. Open the door inside the small antechamber and put the items in the small antechamber.
5. Close the door inside the small antechamber tightly.
6. Open the door outside the small antechamber to take out the items.
7. Close the door outside the small antechamber tightly.
three. Operation precautions:
1. The vacuum pump should be kept on while the system is working.
2. When the oxygen concentration in the box exceeds 200PPM, the equipment maintenance personnel should be notified to perform system operation, otherwise the water and oxygen purification system will be damaged.
3. Check before starting the cycle to see if the cabinet condition or regeneration is in progress. If the above-mentioned operation is in progress, it is forbidden to loop.
4. Two purification columns cannot be regenerated at the same time.
A. Before regeneration, ensure that the glove box has been cleaned by inert gas (H2O<200ppm) to ensure sufficient regeneration gas supply. The regeneration gas pressure is 0.06-0.08mpa.
B. Before starting the regeneration, please confirm that the corresponding purification column cycle is closed.
C. The regeneration process takes 24 hours. Once the execution cannot be disconnected, the regeneration gas is passed 3-6 hours after regeneration. Pay attention to the amount of regeneration gas, adjust the pressure of regeneration gas appropriately, and ensure that the regeneration gas is adequately supplied during these 3 hours The regeneration origin can be closed after the 6th hour.
D. During the regeneration process, the vacuum pump must not be turned off, and do not touch the top of the purification column to prevent accidents.
E. Once the regeneration is terminated unexpectedly, please ensure that the regeneration and circulation of the purification column cannot be restarted within 12 hours, otherwise the equipment will be damaged.
5. Pay attention to protect the working gloves from damage during operation.
Maintenance:
1. Primary maintenance:
Daily cleaning. Once a day
2. Secondary maintenance:
2.1 Fasten the screws and nuts that are easy to loosen in each part. Once a month
2.2 Fasten the electrical components. Once every 3 months
2.3 Correction temperature. Once every 3 months
