Working principle of Pneumatic Butterfly Valve
Pneumatic butterfly valve through the positioner, solenoid valve or other equipment, to absorb dry, lubricated air, and control them, these gases to the pneumatic actuator cylinder, and compressed air, pneumatic actuator work as the source of air, when the compressed air in the cylinder is fed into the air chamber of the pneumatic actuator, the air pressure acts on the piston, generating thrust that rotates the output shaft and drives the stem and disc to rotate, thus completing a butterfly valve opening and closing action. The Pneumatic butterfly valve uses the compressed air to drive a combination of pneumatic pistons in the actuator, transferring the force to the cross beam and the curve track, driving the hollow core spindle to rotate, and transferring the compressed air to each cylinder, change the position of air inlet and outlet to change the spindle rotation direction, according to the butterfly valve required torque requirements, the number of cylinder combinations can be adjusted to drive the butterfly valve.
Pneumatic butterfly valve to add a valve positioner, can be precisely open regulation. The intelligent positioner can be connected with the field bus to detect the working state of the Pneumatic Butterfly Valve.
Pneumatic butterfly valve is a kind of control valve which is used in industrial pipelines because it can open and close quickly and ensure the safety of pipeline effectively.
Application of Pneumatic Butterfly Valve
In general, pneumatic butterfly valves are installed in small-bore pipe, used to control water, steam, air, mud, oil and a variety of corrosive media and other fluid flow.
Pneumatic butterfly valve small size and light weight, installation and maintenance are very convenient. We mentioned above that the pneumatic butterfly valve is compressed air to drive, for the air quality has high requirements, so the pneumatic butterfly valve drive device also includes a variety of accessories, such as air filter pressure reducing valve, pneumatic solenoid valve, positioner, etc. , the former is used to filter impurities and moisture in the air, while the latter is used to control the opening and closing of the actuator.
Post time: Nov-25-2021