Evolution history of the hottest butterfly valve p

2022-08-09
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Butterfly valve product evolution

the original butterfly valve is a simple and loosely closed flapper valve. It is usually used as a flow regulating valve and damping valve in water pipeline systems. With the application of chemical resistant synthetic rubber in butterfly valves, the performance of butterfly valves has been improved. Because synthetic rubber has corrosion resistance, erosion resistance, stable size and good resilience, the original butterfly valve is a simple and loosely closed baffle valve. It is usually used as a flow regulating valve and damping valve in water pipeline systems. With the application of chemical resistant synthetic rubber in butterfly valves, the performance of butterfly valves has been improved. Because synthetic rubber has the characteristics of corrosion resistance, erosion resistance, stable size, good resilience, easy forming, low cost, etc., and synthetic rubber with different properties can be selected according to different use requirements to meet the working conditions of butterfly valves, it is widely used to manufacture the lining and elastic seat of butterfly valves

because polytetrafluoroethylene (PTFE) has strong corrosion resistance, stable performance, not easy to aging, low friction coefficient, easy to form, and stable size, and it can also be filled and added with appropriate materials to improve its comprehensive performance, so as to obtain butterfly valve sealing materials with better strength and lower friction coefficient, which overcomes some limitations of synthetic rubber, Therefore, high molecular polymer materials represented by polytetrafluoroethylene and their filling modification materials have been widely used in butterfly valves, which further improves the performance of butterfly valves. Butterfly valves with wider temperature and pressure range, sealing performance and longer service life have emerged. In order to meet the requirements of industrial applications such as high and low temperature, strong erosion and long service life, metal sealed butterfly valves have been greatly developed in recent decades. With the application of high temperature resistance, low temperature resistance, strong corrosion resistance, strong erosion resistance and high-strength alloy materials in butterfly valves, metal sealed butterfly valves have been widely used in high and low temperature, strong erosion, long service life and other industrial fields. Butterfly valves with large diameter (9750mm also determines the structure of the tension machine), high pressure (2.2kn/cm2), and wide temperature range (-102 ~ 606 ℃) have emerged, so that the technology of butterfly valves has reached a new level

because the movement of the butterfly valve plate is wiping, most butterfly valves can be used for media with suspended solid particles, and can also be used for powdery and granular media according to the strength of the seal

butterfly valve is a kind of valve that uses the disc type hoist to rotate back and forth about 90 degrees to open, close and adjust the fluid channel. Butterfly valve is not only simple in structure, small in volume, light in weight, low in material consumption and small in installation size, but also has small driving force at 2 p.m. on May 5. "You Xiaoping said that the torque is small, the operation is simple and rapid, and it can also have good flow throttling function and closing sealing characteristics at the same time. It is one of the fastest-growing valve varieties in recent decades. Especially in the United States, Japan, Germany, France, Italy and other industrial developed countries, butterfly valves are widely used. The variety and quantity of butterfly valves are still expanding, and they are developing towards high temperature, high pressure, large diameter, high sealing, long life, excellent regulation characteristics and one valve multi-function. Their reliability and other performance indicators have reached a high level, and have partially replaced stop valves, gate valves and ball valves. With the development of butterfly valve technology. In a foreseeable short time, especially in the implementation process of the external wall self insulation system, there is a certain difficulty. In the application field of large and medium-sized caliber, medium and low pressure, butterfly valve will become the dominant valve form

due to the application of computer aided design (CAD), computer aided manufacturing (CAM) and flexible manufacturing system (FMS) in the valve industry, the design and manufacture of butterfly valves have reached a new level. It not only comprehensively innovates the design and calculation method of valves, reduces the heavy repetitive routine design work of professional technicians, and enables technicians to have more energy to improve the technical performance of products and the research and development of new products, shortening the cycle and improving labor productivity. Especially in the field of metal sealed butterfly valve, due to the application of cad/cam, there is a three-dimensional sealing pair designed by CAD and manufactured by cam numerical control, so that the sealing surface of the valve is free from any extrusion, scratch and wear during the opening and closing process, so that the sealing performance and service life of the butterfly valve are improved by an order of magnitude

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