Operating principle of electric butterfly valve
When the electric butterfly valve works, the inner chamber is filled with compressed air (the working pressure is 0.7 MPa) to form a compressed air column. With the increase of the vibration load, the height of the butterfly valve decreases, the volume of the inner chamber decreases, the stiffness of the butterfly valve increases, and the effective bearing area of the air column in the inner chamber increases. At this time, the bearing capacity of the electric butterfly valve increases. When the vibration load decreases, the height of the butterfly valve increases and the inner volume increases. The stiffness of the butterfly valve decreases, the effective bearing area of the air column in the cavity decreases, and the bearing capacity of the butterfly valve decreases. In this way, the electric butterfly valve is within the effective stroke. The height, inner cavity volume and bearing capacity of the electric butterfly valve have smooth and flexible transmission with the increase and decrease of vibration load. The working principle is shown in the figure. Plane A-A is tangent to the surface of electric butterfly valve capsule. And perpendicular to the capsule axis (a). The electric butterfly valve takes the air inside the electric butterfly valve as the elastic medium. When the air is compressed, the air will produce a reaction force, which will produce an elastic restoring force. In life, we always meet many electric butterfly valves used in various industries, and the market demand is also very large. Today, I would like to share with you the design principles of electric butterfly valves. Please see the following:
The strain of electric butterfly valve mainly depends on the configuration of internal and external structures and the setting of materials. Therefore, how the rubber function adapts to this change is the general principle of the overall formula design of rubber.
The first thing to consider when designing the compound formula is to control the function of hub materials; The second is to start from the overall deformation structure, and put forward the mechanical function requirements of rubber bearing shear strain from the strain and compression deformation changes of various parts. The constant elongation stress of the rubber material represents the stress-strain characteristics of the electric butterfly valve.
Therefore, the constant elongation stress is usually taken as the mechanical function index of the rubber compound. Carbon black is used as reinforcing material in the rubber compound of electric butterfly valve, which can improve its constant elongation stress, reduce the dynamic deformation and compression deformation of rubber compound under constant load, and reduce fever. Although the type of raw rubber used is different, the constant elongation stress in the rubber layer of each part should be fairly distributed. The above content will tell you about this place. Thank you for your attention!