The laboratory liquid nitrogen machine is mainly used for school laboratory teaching. Beverages are kept fresh by inverted cans. Carbon molecular sieves are used as adsorbents. Under a certain pressure, oxygen and nitrogen in the air are used to achieve the purpose of separating air with different diffusion rates in the pores of carbon molecular sieves. Its characteristics are: normal temperature production, process Simple, high degree of automation, low fragility, convenient shutdown, easy maintenance, and low production cost.

The laboratory liquid nitrogen machine is a nitrogen manufacturing equipment designed and manufactured according to the pressure swing adsorption technology, which helps to ensure the smoothness of the system air, reduces the discharge temperature of the compressed air, and separates impurities such as water and oil in the compressed air according to the reduction of the compressed air temperature. It helps to extend the life of post-processing equipment and at the same time improve the quality of compressed air. It is a nitrogen manufacturing equipment designed and manufactured according to the pressure swing adsorption technology, which helps to ensure the smoothness of the system air, reduces the discharge temperature of the compressed air, and separates impurities such as water and oil in the compressed air according to the reduction of the compressed air temperature, which helps to extend the Treatment equipment life, while improving the quality of compressed air.

    The laboratory liquid nitrogen machine adopts a special filling molecular sieve technology, gas classification design, high adsorption rate, and effectively prevents molecular sieve differentiation. Three-stage filter, pneumatic angle valve control, 3 million trouble-free operations, PLC microcomputer automatic control, and remote computer online control.

　 During the long-term use of the laboratory liquid nitrogen machine, attention should be paid to maintenance to extend the effective life of the equipment. Let's introduce the maintenance method with a small system.

　 1. During operation, if a large amount of black dust is sprayed out from the cavity, the cause should be stopped in time to avoid further aggravation of carbon molecular sieve powder.

　　 2. Carbon molecular sieve is its core. In order to prevent pollution and loss of effect, it is necessary to strictly control the oil content of the air compressor exhaust, and regularly replace the precision filter element and the activated carbon in the energy-efficient deoiling machine.

　　 3. Regularly check the pressure gauge of the compression cylinder. If there is no pressure or the pressure drops during the desorption process, the cylinder can no longer press the carbon molecular sieve normally, and the carbon molecular sieve is too compressed to move. The problem must be solved in time to avoid the generation of molecular sieve powder. When the carbon molecular sieve gap is rebuilt or the normal loss causes a carbon level alarm, the addition of carbon molecular sieve must be stopped immediately. Carbon molecular sieve storage, transportation, loading and unloading are harmless to humans. Wear goggles, breathing filters and exhaust fans when filling carbon molecular sieve, and wash skin contact with soap after filling.