Pneumatic components are components of pneumatic systems.
Pneumatic system is a branch ofthat makes use of gas or compressed .
The principles of pneumatic are the same as those for hydraulic, but pneumatic transmits power using a gas instead of a liquid.
With pneumatic, air is usually pumped into a receiver using a compressor. The receiver holds a large volume of compressed air to be used by the pneumatic system as needed. Atmospheric air contains airborne dirt, water vapor, and other contaminants, so filters and air dryers are often used in pneumatic systems to keep compressed air clean and dry, which improve reliability and service life of the components and system. Pneumatic systems also use a variety of valves for controlling direction, pressure, and speed of actuators.
Where Is Pneumatics Used?
Though most of us do not realize it, we are surrounded by systems based on pneumatics. Below are some examples.
- Air brakes on buses and trucks are formally known as compressed air brake systems. These systems use a type of friction brake in which compressed air presses on a piston, and then applies the pressure to the brake pad that stops the vehicle.
- Exercise machines can be built on pneumatic systems. A pneumatic cylinder creates resistance that can be adjusted with air pressure.
- Compressed-air engines, also called pneumatic motors, do mechanical work by expanding compressed air. Usually the compressed air is converted to mechanical action by rotary or linear motion.
- Pressure regulators are valves designed to automatically stop the flow of a liquid or gas when it reaches a certain pressure.
- Pressure sensors are used to measure the pressure of gases or liquids.
- Pipe organs produce sound by pushing pressurized air through pipes that are chosen by pressing keys on a keyboard.
- Inflatable structures, such as balloons, bouncy castles, or blow up figures are inflated with a gas – air, helium, nitrogen, or hydrogen. The pressure of the gas keeps the structure inflated.
- Cable-jetting is a technique used to put cables into ducts. Compressed air is inserted and flows through the duct and along the cable.
- Pneumatic mail systems deliver letters through pressurized air tubes. This was invented by a Scottish engineer in the 1800s.
- Gas compressors are devices that increase the pressure of a gas by reducing its volume.
- A pneumatic bladder is an inflatable bag technology that can be used to seal drains and ducts to contain chemical gases or spills, to stabilize cargo within a container, or to float an artificial coral reef. They can be used in medical research, and have other applications as well.
- Pneumatic cylinders use the power of compressed gas to produce a force.
- A vacuum pump removes gas molecules from a sealed container, leaving behind a partial vacuum. This concept was invented in 1650.
- Pressure switches close an electrical contact when a certain amount of pressure has been reached. The switch can be set up to make contact either when the pressure rises or when the pressure falls.
- Pneumatic air guns use pre-compressed air as an energy source to put a projectile in motion.
- Barostat systems maintain constant pressure in a closed chamber. They can be used for medical purposes.
- Gas-operated reloading provides energy to run firearms.
- Pneumatic tires are created with compressed air to inflate and form the body of a tire on a bike, car, or other vehicle.
- A handheld jackhammer is a tool that combines a hammer and a chisel, and is usually powered by compressed air.
- Even Legos can use pneumatics! There is a kind of Lego brick that uses air pressure to perform various actions using pneumatics concepts.
Read more pneumatic example here
Advantage&Disadvantage of Pneumatics
• Infinite availability of the source
Air is the most important thing in the pneumatic system, and as we all know, air is available in the world around us in unlimited quantities at all times and places.
To learn more, please check The Advantages and Disadvantages of Pneumatic
Pneumatic Components Lists
A pneumatic system include air compressor, air dry, air source treatment(air filter+air regulator+air lubricator), air valve, air cylinder, air actuator. Meanwhile they need air fittings and air hose to connect the components. To reach some function, the system need more components, such as quick exhaust valve, throttle valve, slide valve, silencer, and check valve, etc.
However, pneumatic system include 4 basic working cells, air power source cells, air source pre-treatment cells, air control cells, air actuator cells. At last, These fours cells are connected by fittings and hoses. Let’s explain them more by picture
• Air power source cells – air compressor. air tank. timer drain valve
• air source pre-treatment cells – pre-filter. air dryer. oil/water separator.final filter.drip leg drain. Filter/Regulator/Lubricator.
There are a few ways to dry compressed air.
You can lower the temperature and then re-heat it. Condensate will form at the low temperature, where the water can be discharged. After re-hearting, the air is dry. This process is used in refrigerated compressed air dryers.
- Over compression. The over compressed air is cooled. Any condensate formed is removed and then the air is expanded to normal working pressure. Expensive and seldom used.
- Absorption. Water in the compressed air is chemically bound to an absorption material. The water dissolves in the material. Both the material and water is then discharged.
- Adsorption. The water ‘sticks’ to the surface of the adsorption material (desiccant). The desiccant is ‘regenerated’ to remove the water again. This process is used in desiccant compressed air dryers.
It adopts modular design, can be used separately or togehter.
Air filter, remove vapor and dust
Air regulator, reduce the pressure
Air Lubricator, add oil into compressor air.
Port size: M5~1”
Max pressure: 1.5 Mpa
Temperature range: 5~60 ℃
Filter grade: 5um, 25um, 40um
Metal cup protective with transparent container – Better visibility & safer
Valve with overflow and all kinds of fixing accessories
• Air Control Cells – Pneumatic Directional valve
Pneumatic directional valve includes air valve, solenoid valve, foot valve, mechanical valve, hand valve.
Valves regulate, direct or control fluid flow by opening or closing. They are installed directly onto pipes or hoses and control the pressure, rate and amount of fluid as it moves through a system.
Some common types of valves are –
Two-way, two-position valves
Three-way, two-position valves
Four-way, two-position valves
• Air Actuator – Air Cylinder, Air tools
Actuator and Pneumatic cylinder are widely acceptance for they are simple, economical, durable, and easy to install. They can produce thousands of pounds of force over a broad range of velocities. Besides, they can cycle at high speeds without overheating and stall without internal damage. What’s more, they readily tolerate tough conditions such as high humidity and dusty environments.
Air Cylinder Features
Our standard air cylinder features include:
Single acting and double acting;
a wide range of bore sizes from 6mm to 600mm;
Max stroke: 2000mm
multiple mounting configurations and mounting accessories.
Cylinder standard: ISO15552, ISO6431, ISO6432, DIN24335