Application of pneumatic butterfly valve on vibrating screen
The advantages of high frequency vibration isolation, sound insulation and low natural vibration frequency of pneumatic butterfly valve can better realize vibration isolation and ensure the safety and stability of the base of vibration equipment and control system.? [Key words] Vibrating screen; Pneumatic butterfly valve; Vibration isolator? 1. Introduction? Vibrating screen is an important mechanical equipment used for screening and classification of ores, stones, industrial raw materials, and coal processing and utilization. Therefore, its technical level and use directly affect the utilization of ore resources and raw materials. The vibration isolation ball valve, the main component of the vibrating screen, has a great impact on the performance of the host. At present, the circular vibrating screen and linear vibrating screen are widely used in China, and the vibration isolation ball valve is basically a metal screw ball valve. It is increasingly recognized that in order to prevent the vibrating screen from transmitting large dynamic loads to the foundation, causing harmful vibration to the foundation and buildings, and reducing harmful noise as far as possible, strong vibration isolation measures must be taken, that is, to select a good vibration isolator. The function of vibration isolation ball valve is to realize elastic support for the vibrating body, make the body produce elastic vibration, and reduce the dynamic load transmitted to the foundation or structural frame. At present, metal screw ball valve is widely used in vibration machinery. It is an elastic element with the advantages of convenient manufacturing, small internal friction and economic energy consumption. However, it has many disadvantages: large volume; It is easy to generate noise; It is inconvenient to adjust its stiffness; The transverse rigidity is small, which is easy to make the machine body swing laterally, especially the metal steel wire is easy to fatigue and fracture, which will lead to sudden accidents and affect production. Moreover, metal screw ball valve is a major source of noise pollution. For this reason, our factory has quoted the pneumatic butterfly valve as the shock absorber of the vibrating screen.