The cases of micro diaphragm air pump used in oxygen generator

Background information

Oxygen is a colorless and odorless gas. It is an important substance for the human body to survive, and it is also an important substance for other animals and plants to survive. Without oxygen, there will be no life and no life in nature. Its importance is like water. With the continuous improvement and improvement of people’s living standards and the increasing demand for health, oxygen inhalation will gradually become an important means of family and community rehabilitation. Therefore, various oxygen concentrators came into being, and its applications are very wide. All walks of life are inseparable from oxygen, including medical care and beauty care.

The principle of oxygen generator

The oxygen principle of oxygen production mechanism probably includes: molecular sieve principle, polymer oxygen-enriched membrane principle, electrolysis water principle and chemical reaction oxygen production principle. This article analyzes the application of oxygen production based on the principle of molecular sieve. Molecular sieve oxygen production is a physical method that directly extracts oxygen from the air, ready to use, fresh and natural. Therefore, there are more medical and household oxygen generators that adopt the principle of molecular sieve oxygen generation.

The principle of molecular sieve oxygen production: the use of molecular sieve physical adsorption and desorption technology. The oxygen generator is filled with molecular sieves, which can absorb nitrogen in the air when pressurized, and the remaining unabsorbed oxygen is collected, and after purification treatment, it becomes high-purity oxygen. The molecular sieve discharges the adsorbed nitrogen back into the ambient air when it is decompressed, and can absorb nitrogen and produce oxygen during the next pressurization. The whole process is a periodic dynamic cycle process, and the molecular sieve is not consumed.

Micro vacuum pump application analysis

The miniature air pump provides power for the entire molecular sieve oxygen production system, which is the key to ensuring the stable and efficient oxygen production of the oxygen production system. The oxygen generator chooses different pumps according to different times. In the medical molecular sieve oxygen production system, the oxygen flow rate is about 1-2m3/h, and the oxygen pressure is about 200-400KPa. Generally, a piston pump with a larger output flow and pressure is selected. Or diaphragm pump. The oxygen output of the household oxygen generator is about 3-10L/min, and the oxygen pressure is about 30-60KPa. Generally, a miniature diaphragm pump with low output flow and pressure and low noise is selected.

Application difficulties:

  1. The molecular sieve type uses pressurization to separate the gas, and the air pump must be able to work for a long time with back pressure and maintain good stability;
  2. The oxygen supply is a continuous process, and the air pump may be in continuous working condition, which requires a higher life of the pump;
  3. The oxygen generator is a medical and health care product, and the entire system needs to run with low noise.