The nitrogen making machine is compared and analyzed from the following aspects:

First, the rationality of the whole system design; Carbon molecular sieve filling technology and pressing method; Control valve service life; Research and development, manufacturing experience, user performance;

Second, the factors that affect the cost of the nitrogen machine: one-time investment of the whole system; Service life of molecular sieve; The life and cost of the parts required during use; Operation and maintenance costs and electricity, water and compressed air consumption;

Third, the factors affecting the stability of the nitrogen machine: the nitrogen machine is a high-tech product involving machinery, electricity and instrumentation, and the stability of the equipment is particularly important in long-term use.

It is not difficult to see from the composition of the nitrogen machine that the stability is affected by the following two points: Control valve: for the pressure swing adsorption nitrogen machine, the valve must have the following properties: good material performance, absolutely no air leakage; Complete the on or off action within 0.02 seconds of receiving the control signal; Can withstand frequent opening and closing, to ensure a long enough service life.