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Working principle of pneumatic actuator for stainless steel valve

Label: stainless steel, stainless steel, valve, pneumatic, implement, work, principle added time: May 25, 2021 click 1285 second

Stainless steel valve Overview of pneumatic actuator:
Pneumatic actuator (i.e. pneumatic head) is also called pneumatic actuator or pneumatic assembly. It refers to the mechanism that uses compressed air pressure to drive the actuator to open, close or adjust stainless steel valves. It mainly includes cylinder, piston, gear shaft, end cover, sealing screw, etc. Air actuator is widely used in various stainless steel valves, including opening direction, travel limit, solenoid valve, positioner, pneumatic component, manual mechanism, signal feedback element, etc. Open, close, open, turn, open, close and other stainless steel valves.
Working principle of stainless steel valve pneumatic actuator:
According to the different action situation, the pneumatic actuator can be divided into single acting and double acting. The double acting actuator is represented by pneumatic opening, that is, pneumatic opening and pneumatic closing. When the air source is lost, it will not move and stay in position. The single acting actuator has the function of spring return. There are two types of normally closed and normally open, i.e. the ventilation is opened, and when the air source is lost, it will reset to the initial state. When the gas source is lost, it is often used in the injury condition. In case of sudden failure, the stainless steel valve can be closed or opened quickly.
"Working principle of double acting pneumatic actuator"
When the air source pressure enters the two piston central cavities of the cylinder from the air port (2), the two pistons are separated and moved to both ends of the cylinder, and the air is discharged from the air chambers at both ends through the air ports (4). At the same time, the rack of the two pistons synchronously drives the output shaft (gear) to rotate anticlockwise. 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 to the center of the cylinder, and the central air chamber discharges gas through the air port (2), and makes the two piston rack drive the output shaft (gear) to rotate clockwise synchronously( If the piston is installed in the opposite direction, the output shaft will rotate in the opposite direction.)
"Working principle of single acting pneumatic actuator (number of springs)"
When the air source pressure enters the air cylinder and the central cavity of the piston from the air hole (2), the two pistons are separated and moved toward both ends of the cylinder to force the springs at both ends to press against each other. The air cavity air at both ends is discharged through the air hole (4). At the same time, the two piston racks synchronously drive the output shaft (gear) to rotate in the opposite direction of the needle. When the solenoid valve reverses the air supply pressure, the two pistons in the cylinder move to the center under the spring force Baidu SEO At the same time, the two piston racks drive the output shaft (gear) clockwise synchronously( If the piston is installed in the opposite direction, the output shaft will rotate in the opposite direction when the spring returns.)

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