Advantages and disadvantages of pneumatic systems

(1) Advantages Pneumatic transmission has the following advantages over mechanical, electrical and hydraulic transmission .

1、cheap energy, easy to handle.

The working medium is air, a convenient source, inexhaustible, directly into the atmosphere after use without pollution, easy to handle, and does not pollute the environment.

2、because the viscosity of the air is very small (about one ten thousandth of the oil), the pressure loss in the pipeline flow is very small, thus facilitating centralized gas supply and long-distance transmission.

3、Pneumatic drive adjustment is convenient, maintenance is simple, there is no media deterioration and replenishment and other issues .

4、Fire and explosion-proof.

5、pneumatic components simple structure, low cost, long life, easy to achieve standardization, serialization and generalization.

6、pneumatic action quickly, fast response, simple maintenance, especially suitable for general equipment control.

(2) disadvantages, pneumatic transmission and mechanical, electrical, hydraulic transmission, compared with the following disadvantages.

1、because the air has a large compressibility, it is not easy to achieve accurate speed control and high positioning accuracy, load changes on the stability of the system has a greater impact on the stability of the movement is poor.

2、Because of the low working pressure (generally 0.3~1MPa), it is not easy to realize accurate speed control and high positioning accuracy. (ii) Because of the low working pressure (generally 0.3 ~ 1MPa), it is not easy to obtain a large output force or torque.

3、pneumatic device noise, high-speed exhaust should be added muffler.

4、Wet air can condense into water droplets in the local pipelines and pneumatic components of the pneumatic system under certain temperature and pressure conditions, which will promote the corrosion and rust of the pneumatic pipelines and pneumatic components and lead to the failure of the pneumatic system.

5、Air has no lubricating property, so oil lubrication device should be set up in the air circuit.