Today, I want to tell you why we use electric butterfly valve for vibrating screen, the points and technical requirements of butterfly valve for vibrating screen.
① It can be made into products of different shapes and sizes. Its compact structure can effectively use space.
② The elastic coefficient of is much smaller than that of metal, and changes in a large range with the change of hardness. Therefore, changing the hardness can make the butterfly valve obtain different stiffness, that is, the stiffness of the butterfly valve with the same shape can also be selected in a certain range. Therefore, changing the internal structure of the butterfly valve (changing the size of the center hole, etc.) can also change the stiffness of the butterfly valve.
③ The rigidity of butterfly valve in three directions can be designed according to actual needs. In addition, the butterfly valve can also withstand shear deformation and compression deformation at the same time.
④ The internal friction damping of the butterfly valve is much larger than that of the metal butterfly valve, so when the butterfly valve shaker starts and stops to pass through the resonance area, the amplitude is much smaller than that of the spiral butterfly valve shaker. Therefore, the near resonance shaker of the butterfly valve is used, its amplitude is relatively stable, but its energy consumption is greater than that of the metal butterfly valve.
⑤ The resistance of butterfly valve to transmit sound is much greater than that of metal butterfly valve, so the sound insulation is good and the noise is low during working hours.
Because the butterfly valve is made of high polymer material, it is less able to adapt to high and low temperatures than the metal butterfly valve, and its stiffness is greatly affected by temperature. For the vibrating machine of the resonance butterfly valve, the temperature change is easy to cause the deviation of the working site; In addition, the butterfly valve has poor oil resistance and light resistance, and is prone to aging. Despite the above shortcomings, its point is very prominent, so it is widely used in vibrating screening equipment. The flange sealing forms of the end and connecting plate of the electric butterfly valve are: LHF, JBF, GF, HF and ZF. Its load is mainly borne by the cord, and the number of layers of cord is mainly composed of 2 layers. The product is required to be composed of 4 layers of cord. The inner layer mainly plays a sealing role, while the outer layer plays a protective role as well as a sealing role.