Laboratory low temperature freezing mill RT-25 and RT-25 is the current laboratory low temperature crushing common models, in the face of ductile materials such as plastic shows a certain advantage, we are mainly talking about plastic raw materials, such as PET, PVC, PPA, PPE, ABS and so on. RT-25 ultrafine mill is also the current market is not many can achieve low temperature grinding machine, the machine through the connection of liquid nitrogen tank can achieve low temperature grinding, expanding the scope of the machine, especially plastic, rubber, high oil and high sugar Chinese medicine, heat sensitive materials and other room temperature is not easy to crush the material with the use of liquid nitrogen low temperature grinding has achieved gratifiable results. The use of RT-25 crusher we have made a lot of explanations in the front, today we focus on the use of liquid nitrogen tank with the machine precautions.
First, check before use
Before filling liquid nitrogen tank with liquid nitrogen, first check whether the shell is dented and whether the vacuum exhaust port is intact. If it is damaged, the vacuum degree will be reduced, and the intake air can not be kept warm in serious cases, so that the upper part of the tank will frost, and the liquid nitrogen loss will be large, and the value of continued use will be lost. Secondly, check the inside of the tank, if there is foreign matter, it must be removed to prevent the inner liner from being corroded.
2. Filling of liquid nitrogen
Use caution when filling liquid nitrogen. For the new tank or the tank in the dry state, it must be slowly filled and pre-cooled to prevent the cooling too fast to damage the inner tank and reduce the service life. When filling liquid nitrogen, do not pour liquid nitrogen onto the vacuum exhaust port. Otherwise, the vacuum degree may decrease. The cover plug is made of insulation material, which can prevent the evaporation of liquid nitrogen and also play the role of fixing the barrel, so the switch should minimize wear to extend the service life.
3. Inspection during use
Check frequently during use. You can observe the shell with your eyes or touch it with your hands. If you find frost on the outside, stop using it. In particular, when the inner wall of the neck tube is frozen with frost, it is not appropriate to scrape with a knife to prevent the inner wall of the neck tube from being damaged, resulting in poor vacuum, but the liquid nitrogen should be removed and let it melt naturally. Since liquid nitrogen is an ultra-low temperature substance, the safety is the highest when used with the crusher, making it easier to operate under the premise of ensuring safety is our goal.
As a laboratory low temperature freezing mill RT-25 supporting equipment, the use of liquid nitrogen tank we talk about these today, hope that this new crushing method can provide feasible laboratory equipment for the detection of laboratory plastic raw materials, but also hope that low temperature freezing mill DTZ-25 can be applied in a broader market.
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