The pneumatic butterfly valve is a combination of butterfly valves and pneumatic actuators. It operates by opening or closing the valve using the axis of the valve's round butterfly plate. This type of valve is mainly used for deep valves and has adjustment and segmentation valve functions. It has become increasingly popular for use in low-pressure pipelines with large diameters. The pneumatic butterfly valve is highly efficient and offers precision operation, making it an excellent choice for many industrial applications. Its robust construction and reliable performance make it a favorite among engineers and operators alike.
The pneumatic butterfly valve operates based on a simple working principle. It involves the installation of a butterfly panel on the diameter of the tube. This panel rotates around the axis of the discs inside the cylindrical channel of the valve. The rotation angle can range from 0° to 90°, resulting in either a fully open or closed position. The construction of the butterfly valve is quite uncomplicated, consisting of various components that contribute to its small size and lightweight nature. Additionally, it can be conveniently operated with a high-speed switch that enables a swift 90° rotation. The valve also possesses excellent fluid control characteristics. When the butterfly valve is fully open, the only resistance encountered by the flow is the thickness of the butterfly board, resulting in minimal pressure loss. Consequently, it offers superior flow control capabilities. Furthermore, the valve can be equipped with different types of seals such as bullet seals, metal seals, elastic seal valves, or sealing rings. These seals can be installed either around the valve body or the butterfly board.
To ensure the proper functioning of pneumatic butterfly valves, it is important to conduct regular maintenance and debugging procedures. This includes cleaning the cylinder surface and ensuring that the cylinder rotating shaft card spring is functioning properly. Additionally, it is recommended to open the cylinder end cover every six months in order to check for any debris or moisture that may have accumulated inside the cylinder. It is also important to check the lubrication of the valve and add lubricating fat as necessary. If the lubrication is deficient, the valve may need to be disassembled and cleaned before adding additional lubricating fat. By conducting these regular maintenance procedures, you can help to ensure the longevity and effectiveness of your pneumatic butterfly valves.
Method and Precautions for Disassembling and Assembling Cylinder Bodies:
To disassemble the cylinder body, start by removing the cylinder cover from both ends of the valve body. When disassembling the piston, pay close attention to the direction of the piston rack. Rotate the cylinder shaft clockwise using external force to move the piston towards the outermost side. Take caution while slowly applying air pressure to push the piston out, as sudden ejection can be dangerous. Once the piston is out, remove the stuck springs from the cylinder shaft. Finally, remove the cylinder shaft from the other end.
After disassembling, it is important to clean each component thoroughly. Apply lubricating fat to specific areas, such as the inner wall of the cylinder and the piston sealing ring, the rack and the back ring film, and the gear shaft and the sealing ring. Once lubrication is applied, the components must be reassembled in the reverse order of disassembly. Pay attention to the correct positioning of gears and coriander. When the gear shaft is in the innermost position, its upper end slot should be parallel to the cylinder body. When the piston is extended to the outermost position, the upper end slot of the gear shaft should be perpendicular to the cylinder, indicating a closed valve position.
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