Pneumatic actuators system

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.

Compressor:

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:

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.

Safety Valve:

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.

Check Valve:

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.

Pneumatic Actuator:

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.