Working principle and flow characteristics of butterfly valve
Butterfly valve is a kind of valve which uses round butterfly plate as the opening and closing part and rotates around the valve axis to open, close and regulate the fluid channel. It is mainly used for cutting off and throttling in the pipeline. The butterfly plate of butterfly valve is installed in the diameter direction of pipeline. In the cylindrical passage of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis with a rotation angle of 0 ° C~90 ° C; Between, rotate to 90 ° C, the valve is fully open. Butterfly valve and butterfly rod have no self-locking ability. In order to locate the butterfly plate, worm gear reducer should be installed on the valve rod. Using worm gear reducer can not only make the butterfly plate have self-locking ability, make the butterfly plate stop at any position, but also improve the operation performance of the valve. The streamline design of the butterfly plate can reduce the loss of fluid resistance, so it is an ene...