Views: 226 Author: Site Editor Publish Time: 2021-06-07 Origin: Site
Pneumatic transmission has the following advantages:
Pneumatic transmission uses air as the working medium, while air is everywhere, so air access is very convenient. Pneumatic transmission used air directly discharged into the atmosphere with the air compressor hose clamp, will not pollute the environment, can be little or no set back air pipeline.
Quick couplings for pneumatic transmission can be piped very easily. Therefore, the system assembly, maintenance and component replacement are relatively simple.
Pneumatic transmission is quick in action, quick in response, and can achieve the required pressure and speed in a relatively short time. Under certain overload operation, the system can also be guaranteed to work safely, and is not prone to overheating.
Pneumatic transmission will not explode or catch fire when compressed air due to the compression tube fitting. It does not need expensive explosion-proof facilities to use pneumatic transmission in inflammable and explosive places. Pneumatic transmission can be safely and reliably applied in the harsh environments such as inflammable, explosive, dusty, radiation, strong magnetism, vibration and impact.
The air pressure has a high self - holding capacity, compressed air can also be stored in the tank, at any time to access. Even when the compressor stops and the valve is closed, the pneumatic system maintains a constant pressure, thus eliminating the need for continuous operation of the compressor.
Because the viscosity of the air is small, flow resistance is small, the air flow in the pipe along the pressure loss is small, is conducive to the medium centralized supply and long-distance transport. Air is easily piped, regardless of distance.
Pneumatic mechanism and working parts can be overloaded and stop, so there is no danger of overload.
Pneumatic transmission use process is basically pollution-free, which is very important for high purification, pollution-free occasions such as: food, printing, wood and textile industries. And, pneumatic has unique adaptability, better than hydraulic, electronic, electrical control.
Pneumatic transmission also has the following disadvantages:
Due to the large compressibility of air, the movement speed of cylinder is easy to change with the change of load, resulting in poor stability, which has a great impact on position control and speed control accuracy.
Compressed air must be well treated and removed dust and moisture inside. The air is not lubricated, measures must be taken in the system to lubricate the components, such as oil mist device and other devices for oil supply lubrication.
The economic working pressure of pneumatic drive is low (generally lower than 0.8 MPa), so the output force of pneumatic system is small. The pneumatic transmission is larger in size than the hydraulic device under the same output force. And the output force is limited to between 20kN and 30kN.
Pneumatic devices emit air loudly. This problem has now been largely solved by the development of sound-absorbing materials and silencers. However, a muffler needs to be added.
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