Advantages and disadvantages of pneumatic components

Advantages of pneumatic components:

1. The pneumatic device is simple in structure, light in weight and simple in installation and maintenance. The medium is air, which is not easy to burn compared with hydraulic medium, so it is safe to use.

2. The working medium is inexhaustible air, and the air itself does not cost money. The exhaust gas treatment is simple, does not pollute the environment, and the cost is low.

3. The adjustment of output force and working speed is very easy. The operation speed of the cylinder is generally less than 1m / s, which is faster than that of the hydraulic and electrical modes.

4. High reliability and long service life. The effective action times of electrical components are about one million times, while the service life of general solenoid valve is more than 30 million times, and that of some good quality valves is more than 200 million times.

5. The compressed air can be used to store energy and realize centralized gas supply. It can release energy in a short time to obtain high-speed response in intermittent motion. Buffering is possible. It has strong adaptability to impact load and overload. Under certain conditions, the pneumatic device has self holding capacity.

6. Full pneumatic control has the ability of fire prevention, explosion-proof and moisture-proof. Compared with the hydraulic mode, the pneumatic mode can be used in high temperature occasions.

7. Due to the small loss of air flow, compressed air can be supplied in a centralized way and transported in a long distance

Disadvantages of pneumatic components:

1. Due to the compressibility of air, the action speed of cylinder is easy to change with the change of load. The method of gas-liquid linkage can overcome this defect.

2. When the cylinder moves at low speed, the low speed stability of the cylinder is not as good as that of the hydraulic cylinder due to the large proportion of friction force in the thrust.

3. Although the output force of the cylinder can meet the working requirements in many applications, its output force is smaller than that of the hydraulic cylinder.

Pneumatic technology is a professional technology which uses compressed air as medium to drive and control machinery. Because it has the advantages of energy saving, pollution-free, high efficiency, low cost, safety and reliability, simple structure, it is widely used in various machinery and production lines. In the past, the pneumatic system and its components in automobile, tractor and other production lines were designed, manufactured and maintained by each factory.