The use of small liquid nitrogen equipment requires proper maintenance

In view of the different requirements of different users in different industries for the use of liquid nitrogen, the company provides customers with personalized and professional small liquid nitrogen equipment, which can fully meet the gas requirements
of different users.

The small liquid nitrogen equipment is based on the principle of pressure swing adsorption, using high-quality carbon molecular sieve as the adsorbent, under pressure, nitrogen is prepared from the air
.

After purifying and drying the compressed air, it is pressurized adsorption and decompression desorption in the adsorbor
.

Using the kinetic effect, the diffusion rate of oxygen in the micropores of carbon molecular sieves is much greater than that of nitrogen, and when the adsorption does not reach equilibrium, nitrogen is enriched in the gas phase to form finished nitrogen
.

In the long-term use of small liquid nitrogen equipment in the process of paying attention to maintenance, so that the effective life of the equipment can be extended, the following by the small editor to introduce the maintenance method of the equipment for everyone: 1, carbon molecular sieve is the core of small liquid nitrogen equipment, in order to prevent it from being polluted and lose its role, to strictly control the oil content of the air compressor exhaust, and regularly replace
the precision filter element and the activated carbon in the high-efficiency degreasor.

2, the equipment is in operation, when it is found that there is a large amount of black dust spraying out of the muffler vent, it is necessary to stop in time to find the cause to avoid the pulverization of carbon molecular sieves more serious
.

3.
Regularly check the pressure gauge
of the press-press cylinder.

If there is no pressure or the pressure drops during the desorption process, it means that the cylinder can no longer press the carbon molecular sieve normally, and the fault should be eliminated in time to prevent the molecular sieve from being crushed and channeling caused by the pulverization
of the molecular sieve.

Due to the recombination of the carbon molecular sieve gap or normal loss, when the carbon level alarm occurs, the carbon molecular sieve
should be stopped immediately.

The storage, transportation and loading and unloading of carbon molecular sieve will not be harmful to the human body, and the carbon molecular sieve can be filled with goggles, breathing filters and air fans, and the skin contact should be washed with soap after filling
.

4.
When the fault of nitrogen purity alarm, carbon level alarm and adsorption pressure drop occurs, when the stop is immediate, analyze and find the cause and troubleshoot the fault
.

5.
When the equipment is not used or intermittently used for a long time, it should be guaranteed to be turned on at least once a month, each time for four hours, so as to ensure that the equipment is always in standby
.

6.
When the equipment is running continuously, the air tightness of each pipeline connection should be checked frequently, and there shall be no air leakage
.

Always check whether the operating status of each pneumatic valve and freeze dryer is normal
.