The basic working principle of the stainless steel lug butterfly valve is to realize the opening and closing of the valve through the coordination of the lug and the valve plate, and then control the on-off and flow of the fluid. Specifically, its working principle can be summarized as follows:
1. Structure composition
Stainless steel lug butterfly valve is mainly composed of valve body, valve plate, lug (or handle, actuator) and sealing device. The valve body forms a fluid channel, the valve plate is rotated in the valve body as an opening and closing member, and the lug is used to drive the rotation of the valve plate.
Second, the working principle
Opening process:
When the valve needs to be opened, the valve plate is rotated about its axis by rotating the lug (or operating the actuator).
With the rotation of the valve plate, the valve plate gradually leaves the sealing surface of the valve seat, the flow area of the valve port gradually increases, and the fluid can smoothly pass through the valve.
When the valve plate is rotated to a position parallel to the pipe axis, the valve is fully open and the flow resistance of the fluid is minimal.
Closing process:
Conversely, when it is necessary to close the valve, the lug (or operating actuator) is rotated in reverse so that the valve plate rotates in reverse about its axis.
With the rotation of the valve plate, the valve plate gradually approaches and presses the sealing surface of the valve seat, and the flow area of the valve port gradually decreases.
When the valve plate is rotated to a position perpendicular to the pipe axis, the valve is completely closed and the fluid is blocked.
Third, flow control
The stainless steel lug butterfly valve can also control the flow of fluid by adjusting the rotation Angle of the valve plate. The rotation Angle of the valve plate is proportional to the opening of the valve, and in turn is proportional to the flow rate of the fluid. Therefore, by precisely controlling the rotation Angle of the valve plate, the precise adjustment of the fluid flow can be achieved.
Iv. Characteristics
High efficiency: The opening and closing speed of the lug butterfly valve is fast, and it can quickly respond to changes in flow rate, thereby improving production efficiency.
Strong corrosion resistance: Due to the use of stainless steel and high-performance sealing materials, stainless steel lug butterfly valves have excellent corrosion resistance and can resist the erosion of various corrosive media.
Good adjustment performance: By adjusting the rotation Angle of the valve plate, precise control of the fluid flow can be achieved.
In summary, the stainless steel lug butterfly valve realizes the opening, closing and flow control of the valve through the coordination of the lug and the valve plate, which has the characteristics of high efficiency, corrosion resistance and good adjustment performance. In practical application, it is widely used in the fluid control system of petroleum, chemical industry, metallurgy, electric power and other industries.