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How much do you know about the working principle of butterfly valve?


Release time:

2023-11-08

Butterfly valve is a kind of valve that drives the disc plate to rotate at the same time according to the rotating valve stem. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, mainly rotating the disc plate 90 degrees for flow control. When the disc plate reaches 90 degrees, the valve is in a fully open state, and the angle of the disc plate can be changed to adjust the medium flow. It is generally installed in the diameter direction of the pipeline. Butterfly valve and stem itself is no locking capacity, in order to effectively regulate the flow of the need to install worm gear reducer, the installation of worm gear reducer butterfly valve not only the ability to lock, but also can change the operating performance of the butterfly valve and more accurate regulation of media flow.

Butterfly valve is a kind of valve that drives the disc plate to rotate at the same time according to the rotating valve stem. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, mainly rotating the disc plate 90 degrees for flow control. When the disc plate reaches 90 degrees, the valve is in a fully open state, and the angle of the disc plate can be changed to adjust the medium flow. It is generally installed in the diameter direction of the pipeline. Butterfly valve and stem itself is no locking capacity, in order to effectively regulate the flow of the need to install worm gear reducer, the installation of worm gear reducer butterfly valve not only the ability to lock, but also can change the operating performance of the butterfly valve and more accurate regulation of media flow.

1. When the butterfly valve is fully opened, it has a small flow resistance. When the opening is between about 15 ° and 70 °, it can perform sensitive flow control, so in the field of large-diameter adjustment, the application of butterfly valves is very common. Since the movement of the butterfly valve butterfly plate is wiped, most butterfly valves can be used for media with suspended solid particles. Depending on the strength of the seal, it can also be used for powdery and granular media.

2. Butterfly valve is suitable for flow regulation. Because the butterfly valve in the pipe pressure loss is relatively large, about three times the gate valve, so in the choice of butterfly valve, should fully consider the pipeline system by the impact of pressure loss, should also consider the strength of the butterfly plate to withstand the pressure of the pipeline medium when closed. In addition, the limits of the operating temperature to which the resilient seat material is subjected at elevated temperatures must be considered.

The structure length and overall height of the butterfly valve are small, the opening and closing speed is fast, and it has good fluid control characteristics. The structural principle of the butterfly valve is most suitable for making large-diameter valves. When the butterfly valve is required to control flow, the most important thing is to correctly select the specifications and types of butterfly valves so that they can work properly and effectively.