What are the classifications of electric butterfly valves?
1. Hydraulic electric butterfly valve:
Hydraulic electric butterfly valves are widely used in automobile suspension systems. The principle is that when the frame and axle move reciprocally and the piston moves reciprocally in the cylinder barrel of the electric butterfly valve, the oil in the electric butterfly valve housing will flow from the inner cavity to another through some narrow pores repeatedly. At this time, the friction between the liquid and the inner wall and the internal friction of the liquid molecules will form the damping force for the vibration.
2. Inflatable electric butterfly valve:
The pneumatic electric butterfly valve is a new type of electric butterfly valve developed since the 1960s. Its structure and point are that a floating piston is installed at the lower part of the cylinder barrel, and a sealed gas chamber formed by the floating piston and one end of the cylinder barrel is filled with high-pressure nitrogen. The floating piston is equipped with a large section O-ring, which completely separates oil and gas. The working piston is equipped with a compression valve and an extension valve that can change the cross-sectional area of the channel according to its movement speed. When the wheels are bouncing up and down, the working piston of the electric butterfly valve reciprocates in the oil, causing the oil pressure difference between the upper chamber and the lower chamber of the working piston, and the pressure oil pushes open the compression valve and the extension valve to move back and forth. Because the valve has a greater damping force on the pressure oil, the automobile air valve attenuates the shock.
3. Membrane electric butterfly valve