Pneumatic actuators system
Pneumatic systems use pressurized air to make things move. Basic pneumatic system consists of an air generating unit and an air-consuming unit.
Air compressed in compressor is not ready for use as such, air has to be filtered, moisture present in air has to be dried, and for different applications in plant pressure of air has to be varied.
Several other treatments are given to the air before it reaches finally to the
Actuators. Practically some accessories are added for economical and efficient
operation of system.
A device, which converts mechanical force and motion into pneumatic fluid power, is called compressor.
Every compressed-air system begins with a compressor, as it is the source of
airflow for all the downstream equipment and processes Electric Motor Electric motor
is used to drive the compressor.
Pressure Switch is used to maintain the required pressure in the receiver; it adjusts the High Pressure Limit and Low Pressure Limit in the receiver.The compressor is automatically turned off when the pressure is about to exceed the high limit and it is also automatically turned on when the pressure is about to fall below the low limit.
The function of the safety valve is to release extra pressure if the pressure inside the receiver tends to exceed the safe pressure limit of the receiver.
The valve enables flow in one direction and blocks flow in a counter direction is called Check Valve.
Once compressed air enters the receiver via check valve, it is not allowed to go back even when the compressor is stopped.
Direction Control Valve:
Directional-control valve are devices used to change the flow direction of fluid within a Pneumatic/Hydraulic circuit.
They control compressed-air flow to cylinders, rotary actuators, grippers, and other mechanisms in packaging, handling, assembly, and countless other applications.
These valves can be actuated either manually or electrically.
A device in which power is transferred from one pressurized medium to another without intensification.
Pneumatic actuators are normally used to control processes requiring quick and accurate response, as they do not require a large amount of motive force. They may be reciprocating cylinders, rotating motors or may be a robot end effectors.