1. Working principle diagram of double-acting pneumatic actuator
When the air source pressure enters the middle cavity between the two pistons of the cylinder from the air port (2), the two pistons are separated and moved toward the two ends of the cylinder. The air in the air chambers at both ends is discharged through the air port (4), and at the same time, the two piston racks are synchronized. Drive the output shaft (gear) to rotate counterclockwise. On the contrary, when the air source pressure enters the air chambers at both ends of the cylinder from the air port (4), the two pistons move toward the middle of the cylinder. The air in the middle air chamber is discharged through the air port (2). At the same time, the two piston racks drive the output shaft (gear) synchronously. ) rotate clockwise. (If the piston is installed in the opposite direction, the output shaft will rotate in the opposite direction)
2. Working principle diagram of single-acting pneumatic actuator
When the air source pressure enters the middle cavity between the two pistons of the cylinder from the air port (2), it causes the two pistons to separate and move towards the two ends of the cylinder, forcing the springs at both ends to compress, and the air in the air chambers at both ends is discharged through the air port (4). The two piston racks synchronously drive the output shaft (gear) to rotate counterclockwise. After the air source pressure is reversed through the solenoid valve, the two pistons of the cylinder move toward the middle direction under the elastic force of the spring. The air in the middle air chamber is discharged from the air port (2). At the same time, the two pistons and racks synchronously drive the output shaft (gear). Rotate clockwise. (If the piston is installed in the opposite direction, the output shaft will rotate in the opposite direction when the spring returns).
