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Wuxi Xinming Explains Performance Index of Pneumatic Actuator

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2021

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Analysis of Pneumatic Actuator Maintenance

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2021

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Maintenance method of pneumatic actuator

Maintenance method of pneumatic actuator

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2021

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Why can't the pneumatic butterfly valve open and close tightly?

Why can't the pneumatic butterfly valve open and close tightly?

25

2021

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Overview of pneumatic ball valve

Overview of pneumatic ball valve

29

2021

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Do you understand the difference between electric actuators and pneumatic actuators?

Do you understand the difference between electric actuators and pneumatic actuators?

Today, wuxi xinming automatic control valve industry co., ltd. will give you a specific introduction about the differences between electric actuators and pneumatic actuators?: Actuators generally include pneumatic actuators, electric actuators, hydraulic actuators of these three. The general definition of the actuator is: a driving device that can provide linear or rotary motion, use driving energy and under the action of control signals to actively operate some equipment and devices, control their switches and adjustments, and replace manual operations. Electric actuators are controlled through various types of current to know its work, while pneumatic actuators use air pressure to control its work. The functions of these two actuators are similar, but they are quite different from other aspects: ① Electric actuator: The driving source is the power source. Pneumatic actuator: the driving source is the gas source, the need for special supporting gas source station, laying pipelines, construction is more cumbersome, increase the budget. The air source is generally compressed air, so it is also equipped with a large air compressor. The power supply is very simple to obtain for all types of industrial sites. Some small equipment supporting actuators, electric plan will be more convenient (generally small equipment is not compressed gas, such as: pressing machine, shield machine, etc.) It's a bible. Energy saving Electric actuator: only when the opening of the control valve is changed, the motor is driven on demand, and the motor is powered off when the required opening is reached. The standby condition requires only a small amount of power to maintain the operation of the control unit. ② Pneumatic actuator: A certain amount of air pressure is required during the operation and standby conditions of the entire control valve. When the air pressure drops, the compressor will operate to pressurize. Generally speaking, the electric actuator is more energy-saving than the pneumatic actuator. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Differences at the skill level The obvious difference between pneumatic actuators and electric actuators is the difference in their skill level. The overall structure of pneumatic actuators is unified, so their load can be better, and because they use gas as the power source, they are especially suitable for high torque output. However, the volume of electric actuators is relatively fine and simpler than that of pneumatic actuators. Therefore, from the perspective of skills, they are simply equipped, the power drive is also very sensitive. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Come on. Differences in the use of the environment The difference in the use environment is also one of the important differences between pneumatic actuators and electric actuators. This difference is also caused by the difference in structure and energy and power between them. In general, the use environment of pneumatic actuators requires lower requirements, even in explosive, magnetic field and gas polluted environments. However, electric actuators have requirements for the environment. No matter which quality of electric actuators is good, they must strictly abide by the environmental requirements of their application. From the fundamental characteristics of electric actuators, we can know that there is a big difference between electric actuators and pneumatic actuators. The three obvious differences are their structure, skill level, application environment and so on, but these will not affect the application, because the two actuators are used in different fields. Summary: Electric actuator will have more advantages in selection. It is compact in structure and compact in size. Compared with pneumatic actuator, electric actuator has relatively simple structure, convenient access to energy, no danger of "air leakage" and high reliability. The performance of the electric valve is higher than that of the pneumatic valve, and its torque will be greater. The above is all the contents of the difference between electric actuator and pneumatic actuator specifically introduced by Wuxi Xinming automatic control valve industry Co., Ltd., if you have any questions, please feel free to come to consult!

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2022

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How to select the pneumatic actuator

How to select the pneumatic actuator

07

2022

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Pneumatic actuator principle, you understand?

Pneumatic actuator principle, you understand?

Today, by Wuxi Xinming automatic control valve industry Co., Ltd. for you to introduce in detail the principle of pneumatic actuator: Overview of a pneumatic actuator Pneumatic actuator is the use of gas pressure to drive the opening and closing of the valve or the implementation of the conditioning equipment, also known as the pneumatic actuator or pneumatic equipment, but generally shallow called the pneumatic head. The piston stroke is long and is suitable for occasions requiring large thrust; while the diaphragm stroke is small and can only directly drive the valve stem. Fork-type pneumatic actuator has the characteristics of large torque, small space, and torque curve more in line with the torque curve of the valve, but it is not very beautiful; it is often used in large torque valves. The rack and pinion pneumatic actuator has the advantages of simple structure, stable and reliable action, and safety and explosion-proof. It is widely used in power plants, chemical industry, oil refining and other production processes with high safety requirements. Two working principle of pneumatic actuator 1. Operation schematic diagram of double-effect 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 move away from each other in the direction of the two ends of the cylinder, and the air in the air chambers of the two ends is discharged through the air port (4), so that the two piston racks together The synchronous drive output shaft (gear) rotates 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 towards the center of the cylinder, and the air in the central air chamber is discharged through the air port (2), so that the two piston racks synchronously drive the output shaft (Gear) rotates clockwise. (If the piston is installed in the opposite direction, the output shaft will rotate in the opposite direction.) 2. Operation principle of single effect 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 move away from each other to 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). Together, the two piston racks synchronously drive the output shaft (gear) to rotate counterclockwise. After the air source pressure is reversed by the solenoid valve, the two pistons of the cylinder move in the center direction under the elastic force of the spring, and the air in the central air chamber is discharged from the air port (2), so that the two pistons rack 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). The above is all the contents of the principle, classification and selection of pneumatic actuators introduced in detail by Wuxi Xinming automatic control valve industry Co., Ltd., if you have any questions, please feel free to come to consult!

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2022

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