The design features of automatic butterfly valve butterfly plate

The butterfly plate of the automatic butterfly valve is a key fluid control component, and its design features are directly related to the performance, response speed and wide range of applicable scenarios of the valve. The unique design of the butterfly plate makes automatic butterfly valves widely used in industrial, chemical, municipal engineering and other fields.

Material selection:

The material selection of the butterfly plate has an important impact on the performance and life of the valve. Usually butterfly plates are made of lightweight, high-strength metal alloys, such as stainless steel, aluminum alloy, etc. These materials not only have good mechanical properties, but also have superior corrosion resistance and can adapt to the requirements of different media. The selection of materials also needs to consider the operating temperature range of the valve to ensure that the butterfly plate can still work stably in high or low temperature environments.

Structure type:

Butterfly plates usually adopt a disk-shaped or fan-shaped structure, which allows the valve to have less resistance during the opening and closing process. Compared with other types of valves, the butterfly plate structure of the butterfly valve is simpler, making the overall valve more compact and easy to install and maintain. The structure of the butterfly plate also makes the inertial load of the valve smaller during the opening and closing process, improving the response speed of the valve.

Diversion design:

The diversion design of the butterfly plate is one of its design features. By rationally designing the outline and edge shape of the butterfly plate, accurate control of the fluid can be achieved. The diversion design can effectively reduce the resistance of the fluid during the opening and closing process, reduce energy consumption, and improve the efficiency of the valve. Excellent flow guide design can also reduce noise and vibration, making the butterfly valve run more smoothly.

Axis position:

The axis position of the butterfly plate has a direct impact on the performance of the valve. Normally, the axis of the butterfly plate is located at half its diameter. Reasonable axis design can ensure that the butterfly plate moves smoothly during the opening and closing process, and the valve operation is more reliable. In addition, the design of the axis position is also related to the connection method of the pneumatic and electric actuators of the butterfly plate, which is of great significance to the driving effect and response speed of the actuator.

Seal design:

The sealing design of the butterfly plate plays a decisive role in the sealing performance of the valve. Common sealing forms include rubber seals, metal seals, etc. Rubber seals usually use silicone, EPDM and other materials, which have excellent elasticity and sealing properties and are suitable for general working conditions. Metal seals are suitable for special working conditions such as high temperature and high pressure, and achieve a tighter sealing effect through close contact between metals.

Surface treatment:

The surface treatment of the butterfly plate has a direct impact on its service life and performance under different working conditions. Common surface treatments include coatings, ceramic coatings, etc. Surface coating can improve the corrosion resistance of butterfly panels and extend their service life. Ceramic coating has better wear resistance and is suitable for working conditions where the fluid contains particulate matter.

Multi-layer structure:

In some high-demand application scenarios, butterfly panels adopt a multi-layer structure design, through the superposition of different materials, to take into account strength, corrosion resistance, thermal conductivity and other properties. The multi-layer structure design allows the butterfly board to maintain superior performance under complex working conditions, increasing its adaptability in special environments.