Choose pneumatic and electric actuators based on valve torque

Time:

2023-08-23

Source:

network

Author:

　　Choose the models of pneumatic and electric actuators based on valve torque

　　1. Check whether electric control or pneumatic control is required on site, whether it is a straight stroke or an angular stroke.

　　2. Whether the valve is a switch type or an adjustment type is required on site, and the price of the actuator switch and adjustment is different.

　　3. Is it analog control on site.

　　4. Consider single acting or double acting cylinders.

　　5. The pneumatic cylinder is selected based on torque, and is also equipped with accessories such as a handwheel, pressure reducing valve, solenoid valve, and limit switch or locator.

　　6. Electric vehicles need to know the on-site control voltage requirements, whether it is DC or AC, and how many volts.

　　7. Is the connection between the valve and actuator appropriate.

　　8. The torque of the actuator should be 30% higher than the valve torque, etc.

　　Overtorque protection mechanism for valve electric actuator

　　Outdoor series: When a certain torque is applied to the output shaft, the worm not only rotates but also produces axial displacement, which drives the crank and cam to compress the micro switch, cut off the motor power supply, and stop the motor when it operates. This achieves the control of the output torque of the electric actuator and protects the electric valve.

　　Explosion proof series: When a certain torque is applied to the output shaft, the worm not only rotates but also produces axial displacement, driving the crankshaft and causing angular displacement of the collision block, thereby compressing the cam and lifting the bracket. When the torque on the output shaft increases to the set torque, the micro switch acts to cut off the motor power supply, causing the motor to stop rotating, thereby achieving control of the output torque of the electric actuator and protecting the electric valve.

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