Laboratory high-pressure reactorThe most common malfunction is the magnetic stirrer part. If the stirring shaft has a large swing or produces abnormal noise during use, the shaft sleeve of the magnetic stirrer needs to be replaced. If maintenance is required, please follow the following steps for repair.

1During maintenanceshouldFirst, release the air pressure inside the kettle to the outside, and then unscrew the nut on the kettle coverContents inside the kettleMaterial extraction,If the reaction is flammable, explosive, or toxicmediumIt should be cleaned thoroughly first.

2Connect the kettle lid components with magnetic forcestirRemove the tools together,Use a wrench to disassemble the magnetic stirrer.

3Seal the tophatRemove the thread connecting the cooling body and the sealing cover, and remove the sealing cover together with the inner and outer magnetic steel rotors and the upper stirring shaftsupportThe cooling body has been removed.

4Then, according to the structural diagram, remove and replace the graphite composite shaft sleeveIRemove and replace the composite shaft sleeveIITo prevent the high temperature expansion of the shaft sleeve and squeeze the mixing shaft, the graphite composite shaft sleeve should be fitted with a larger gap. If the fit is tight, the shaft sleeve needs to be ground during assembly.

5Grasp the upper mixing shaft with your hand, poke the inner magnetic steel rotor and top end head upwards, then remove and replace the graphite composite shaft sleeveII.

6Attention: During loading and unloading, the outer magnetic steel will suck the inner magnetic steel rotor inward with a strong magnetic force. Be careful not to squeeze your hands during loading and unloading.

7The severely worn mixing shaft needs to be reworked, and its mating surface must be smooth. The newly replaced shaft sleeve manual turning should operate smoothly without any obstruction or jamming.

8After reinstalling all the upper and lower bearings, an air tightness test should be conducted. Only after confirming that there is no leakage in each sealing part can it be put into production use.

9During the maintenance process, pay attention toDo not damage the inner magnetic rotor with hard objects and prevent the inner magnetic steel from adsorbing substances such as iron foam.