As industrial equipment, the PSA oxygen generation system will inevitably experience mechanical wear and tear during its long-term operation, resulting in a decline in product performance. The decline in oxygen concentration is a more important issue, especially in the field of medical PSA oxygen generation; therefore , this article has compiled.

1. The air intake volume of the PSA oxygen generation system is too large or too small. The PSA pressure swing adsorption method is used to produce oxygen. The adsorption capacity of the core component molecular sieve is relatively fixed. If the air intake volume is too large or too small, the molecular sieve may not be able to produce sufficient oxygen, so the oxygen concentration will be low. The key point is to strictly carry out product selection and system planning, and select appropriate pipelines and appropriate regulating valves to control the air intake.several common factors that lead to low oxygen concentration, and they are summarized as follows;

2. The compressed air pressure is unstable. The pressure of compressed air cannot be within the specified range when it enters the molecular sieve. Sudden high and low air pressure will affect the working efficiency of the molecular sieve and insufficient oxygen production. A common solution is to add an air storage tank before the air enters the molecular sieve. , wait until the air pressure is in a stable state before entering the molecular sieve.

3. 3. Molecular sieve quality. Although molecular sieves can continue to work for 8-10 years under normal use, molecular sieves will undergo natural loss during use. When the loss reaches a certain level, sufficient oxygen will not be produced, resulting in a decrease in oxygen concentration. Therefore, it is necessary to check the molecular sieve regularly to ensure the normal and efficient operation of the molecular sieve.

4. Filter. The filter of the PSA oxygen production system mainly filters out impurities, moisture and oil in the air to make the air clean. The purpose of this is to help the molecular sieve better produce high-purity oxygen and avoid "poisoning" of the molecular sieve. Case. When the filter really fails, the compressed air will carry impurities into the molecular sieve, and the excess impurities and dust will be mixed with the produced oxygen, reducing the oxygen content. Excessive moisture may also cause "poisoning" of molecular sieves, making it impossible to continue production; therefore, it is important to check regularly and replace filters in time, otherwise it will become one of the factors affecting oxygen concentration.