pneumaitc actuator

Pneumatic actuator Operating Principle of DR(DL) Double Acting Type

The air source pressure comes into the cylinder body between the two pistons from air entrance (2) and pushes the pistons toward the end of the cylinder body. The air between the pistons and the ends of the cylinder body is released from air entrance (4). Meanwhile the racks of pistons rotate the output shaft anticlockwise (gear wheel) simultaneously, whereas if the air source pressure comes into the ends of the cylinder body from air entrance (4) and pushes the pistons toward each other with the air between two pistons released from air entrance (2), the output shaft (gear wheel) would be driven by the racks of the pistons simultaneously to rotate clockwise. (if the pistons are assembled in different direction from each other, the output shaft would turn out to rotate in inverse direction, namely the double acting reverse DL type)

Pneumatic actuator working principle

Operating Principle of SC(SO) Single Acting Type

The air source pressure comes into the cylinder body between the two pistons from air entrance (2) and pushes the pistons toward the end of the cylinder body while the springs at each ends inside the cylinder body is forced to shrink with the air between the pistons and the ends of the cylinder body released from air entrance (4).in the meantime, the racks of pistons drive the output shaft (gear wheel) simultaneously to rotate anticlockwise.

After the direction of the air source pressure is reversed by the solenoid valve, the springs at each end begin to reset and the pistons are forced toward each other by the elasticity with the air between two pistons released from air entrance (2). Meanwhile the output shaft (gear wheel) would be driven by the racks of the pistons simultaneously to rotate clockwise. (if the pistons are assembled in different direction from each other, the output shaft would turn out to rotate in inverse direction when the springs reset, namely the single acting reverse SO type`)

Pneumatic actuator working principle
Pneumatic actuator working principle

A pneumatic actuator is a device that harnesses the power of compressed air to generate motion. This movement is often used in industrial applications, particularly within the valve manufacturing industry, where precision and reliability are paramount.

The working principle of a pneumatic actuator is both robust and sophisticated, emphasizing its status as a key component within complex mechanical systems. The process begins when compressed air enters the actuator. This air pressure acts on a piston or diaphragm within the actuator, creating force. This force is then converted into motion – typically linear or rotary – which can be used to control a valve or other mechanism.

In a typical linear actuator, the compressed air pushes the piston along the length of a cylinder, driving the attached valve stem in the same direction. In a rotary actuator, the air pressure causes a rotor or vane to rotate, turning the valve.

One of the key advantages of pneumatic actuators is their fail-safe operation. In the event of a loss of air pressure, a spring return mechanism can automatically close or open the valve, depending on the configuration.

As a global leader in valve manufacturing, we ensure the highest standards of quality control in our pneumatic actuators. Rigorous testing and certification processes underscore our commitment to delivering reliable, high-performance solutions that meet the precise needs of our clients worldwide.

Understanding the working principle of pneumatic actuactors is vital in appreciating how they contribute to the overall efficiency and functionality of various industrial systems. Their design and operation reflect the technical expertise and rigorous quality standards that define our brand.