Pneumatic Valve Drive
A Pneumatic Valve Drive refers to the directional control valve blocks and diverts the flow of air. These valves are used to drive other components such as grippers, actuators, hand tools and other devices. These are also used to pilot other valves.
It is a Pneumatic Valve Drive system and it transforms the energy from compressed air into rotational and linear movement. It is a system that uses the pressure difference of air and gas for its operation.
Signals that control Pneumatic Valve Drive
Many units are driven by the special signals. The following types of signals can control Pneumatic Valve Drive:
1. Electromagnetic Pneumatic Valve Drive
Electromagnetic Pneumatic Valve Drive is controlled by the magnetic fields on solenoid and on coils. Their work is very simple. Recently an external electric source is supplied by the coils. Interaction between the magnetic field in solenoid and in coils makes the stem move.
2. Pneumatic Valve Drive
Pneumatically operated valves are mostly controlled by the same stream of the compressed air. It operates in pneumatic systems. In absence and in the presence affects their criteria conditions.
3. Mechanical Pneumatic Valve Drive
Mechanical pneumatic valves are driven by the mechanical force such as the use of a lever. There are many options in 90 degree and quarter turn visions. They perform many simple tasks such as closing and opening.
Types of Pneumatic Valve Drive
Pneumatic Valve Drive is also named as the directional control valves. They are arranged by using many different methods that includes:
· By the number of flow switching and ways that are possible
· By the number of outlet and inlet ports they possess
· By the mechanism that is applied to close and open the ports
· By the valve status when in the un-actuated states.
Functional directional control valves control the direction of airflow. These devices are used in many ways in the hydraulic system such as to disconnect and to connect the air supply. With this in mind we can also see the primary types of Pneumatic Valve Drive:
· Two way directional Pneumatic Valve
· Three way directional Pneumatic Valve
· Four way directional Pneumatic Valve
· Spring offset Pneumatic Valve
Advantages of Pneumatic Valve Drive
Pneumatic Valve Drive has many advantages that are as follows:
1. Systems that operate compressed air because of the infinite amount of air in our atmosphere.
2. The instruments are reliable and very durable. Components of these machines such as pneumatic valves are not damaged easily that is compared to other electromotive elements
3. Pneumatic systems do not burn or overheat when it is compared to an electromotive components
4. These devices are very safe to work with. This is because Pneumatic systems are explosion and spark free. This indicates that they work in combustible environments.
Conclusion
Valves are used to control, distribute and direct the flow in Pneumatic Valve Drive. They perform the dosing and guiding function by regulating and locking elements. Though Pneumatic Valve Drive acts as the mediator between actuators and the source in Pneumatics.
