Pneumatic is to use impact effect or rotate effect generated air pressure make it rotating or work, it is compressed air as power source, driving mechanical completion scaling or rotation. Because it is to use air that has compressibility characteristic, breathing in compressed air storage, the air is like a spring with elasticity, and then use control element to control its direction, drive executive component rotate and scale. From the air how much air suction and will discharge how much into the atmosphere, won’t produce any chemical reaction, will not consume any ingredients of polluted air, otherwise gas viscosity is smaller than liquid viscosity, so flow speed is so fast, and very environmental protection.
Pneumatic device structure is simple, lightweight, easy installation and maintenance. Pneumatic technology working medium is inexhaustible air, the air itself is not to spend money. Exhaust processing is simple, does not pollute the environment, but electric energy consumption is larger, the energy conversion rate is very low, initial cost is lower, but use cost is higher. Full pneumatic control has the ability of fire prevention, explosion proof and moistureproof. Pneumatic device output force and the working speed adjustment is very easy. But not too high reliability, service life are greatly influenced by the air cleanliness and use frequency.
For example pneumatic press, is to use of high pressure gas from compressor, through pipeline transport compressed gas to electromagnetic valve, through the pedal switch to control the action of electromagnetic valve control cylinder work and return, so as to achieve the aim of punching.