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Structural principle of pneumatic cement butterfly valve - focus on microfluidic control technology

Pneumatic cement butterfly valves consist of pneumatic actuators and butterfly valves. The pneumatic butterfly valve is opened and closed with a circular disc that rotates with the valve, so that the pneumatic cement butterfly valve that is activated is mainly used as a shut-off valve, and can also be designed to have the function of adjusting or stepping valve and adjusting. The butterfly valve is currently at low pressure. The use of large and medium caliber pipes is increasing.

The butterfly valve's disc is mounted in the diameter direction of the pipe. In the cylindrical passage of the butterfly valve body, the disc-shaped disc rotates around the axis, the rotation angle is between 0°-90°, and when rotated to 90°, the valve is fully open. The butterfly valve is simple in structure, small in size and light in weight, and consists of only a few parts. Moreover, it can be quickly opened and closed by rotating 90°, and the operation is simple, and the valve has good fluid control characteristics.

When the butterfly valve is in the fully open position, the thickness of the disc is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is small, so it has better flow control characteristics. The butterfly valve has two sealing types: a spring seal and a metal seal. Elastomeric sealing valve, the sealing ring can be mounted on the valve body or attached to the periphery of the disc.

Valves with metal seals generally have a longer life than elastomeric seals, but are difficult to seal completely. Metal seals can accommodate higher operating temperatures, while elastomeric seals have temperature-limited defects.

If a butterfly valve is required for flow control, the main choice is the correct size and type of valve. The structural principle of the butterfly valve is especially suitable for making large diameter valves. Butterfly valves are widely used not only in general industries such as petroleum, gas, chemical, and water treatment, but also in cooling water systems for thermal power plants.

Cement butterfly valves are mainly used for switch boxes, hoppers and silos with powdered or granular materials. It can be applied to the treatment of all powdery and granular materials. The cement butterfly valve uses the gravity of the material to intercept and pneumatically transport the dry material. The cement butterfly valve can be installed under the hopper, the bin, the silo, the spiral or other type of conveyor, and Connect the pneumatic conveying pipe. Due to the special construction of this valve and the use of engineering materials, it is always a very economical and extremely efficient choice.

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