Classification of pneumatic actuators

Pneumatic actuator is the pneumatic pressure to drive open and close or adjust the valve of the executive device, also known as the pneumatic actuator or pneumatic device, but commonly known as the pneumatic head. The actuator and the regulating mechanism of the pneumatic actuator is a unified whole, and the actuator has a thin film, piston, fork and rack and pinion.

Piston stroke is long, suitable for occasions requiring large thrust; Thin film stroke is small, can only directly drive the stem. Fork pneumatic actuator has large torque, small space, torque curve in line with the characteristics of the valve torque curve, but not very beautiful; Commonly used on valves with high torque. Rack and pinion pneumatic actuator has the advantages of simple structure, stable and reliable action, and explosion-proof, in the production process of power plants, chemicals, oil refining, etc., has a wide range of applications.

1. Thin-film actuator

Thin-film actuators are commonly used, which can be used as a general control valve driving device, composed of pneumatic thin-film actuators. The signal pressure P of pneumatic thin film actuator acts on the diaphragm, deforming it, driving the push rod on the diaphragm to move, so that the spool shifts, so as to change the opening of the valve. It is simple in structure, cheap in price, convenient in maintenance and widely used.

2. Piston actuator

The pneumatic piston actuator makes the piston move in the cylinder to produce thrust. Obviously, the output strength of the piston type is much greater than that of the film type. Therefore, the film type is suitable for small output, high precision occasions; Piston type is suitable for large output force occasions, such as large diameter, high pressure drop control or butterfly valve driving device. In addition to the film type and piston type, there is a long stroke actuator, its long stroke, large torque, suitable for the occasion of angular displacement and large torque output.

3. Rack and pinion actuator

Rack and pinion (double piston rack) pneumatic actuator, has the characteristics of compact structure, beautiful appearance, quick response, stable operation, long service life and so on. Accessories adopt advanced anti-corrosion treatment technology, can adapt to all kinds of harsh working conditions. Its high and low temperature as well as a variety of special stroke actuators in a variety of applications have a good performance.

Pneumatic actuator is the pneumatic pressure to drive open and close or adjust the valve of the executive device, also known as the pneumatic actuator or pneumatic device, but commonly known as the pneumatic head. The actuator and the regulating mechanism of the pneumatic actuator is a unified whole, and the actuator has a thin film, piston, fork and rack and pinion.

Piston stroke is long, suitable for occasions requiring large thrust; Thin film stroke is small, can only directly drive the stem. Fork pneumatic actuator has large torque, small space, torque curve in line with the characteristics of the valve torque curve, but not very beautiful; Commonly used on valves with high torque. Rack and pinion pneumatic actuator has the advantages of simple structure, stable and reliable action, and explosion-proof, in the production process of power plants, chemicals, oil refining, etc., has a wide range of applications.

1. Thin-film actuator

Thin-film actuators are commonly used, which can be used as a general control valve driving device, composed of pneumatic thin-film actuators. The signal pressure P of pneumatic thin film actuator acts on the diaphragm, deforming it, driving the push rod on the diaphragm to move, so that the spool shifts, so as to change the opening of the valve. It is simple in structure, cheap in price, convenient in maintenance and widely used.

2. Piston actuator

The pneumatic piston actuator makes the piston move in the cylinder to produce thrust. Obviously, the output strength of the piston type is much greater than that of the film type. Therefore, the film type is suitable for small output, high precision occasions; Piston type is suitable for large output force occasions, such as large diameter, high pressure drop control or butterfly valve driving device. In addition to the film type and piston type, there is a long stroke actuator, its long stroke, large torque, suitable for the occasion of angular displacement and large torque output.

3. Rack and pinion actuator

Rack and pinion (double piston rack) pneumatic actuator, has the characteristics of compact structure, beautiful appearance, quick response, stable operation, long service life and so on. Accessories adopt advanced anti-corrosion treatment technology, can adapt to all kinds of harsh working conditions. Its high and low temperature as well as a variety of special stroke actuators in a variety of applications have a good performance.