Today, I will tell you why pneumatic ball valve is used for vibrating screen, the points and technical requirements of ball 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 elasticity coefficient of the ball valve is much smaller than that of the metal, and changes in a large range with the change of hardness. Therefore, changing the hardness can make the ball valve obtain different stiffness, that is, the stiffness of the ball valve with the same shape can also be selected in a certain range. Therefore, changing the internal structure of the ball valve (changing the size of the center hole, etc.) can also change the stiffness of the ball valve.
③ The rigidity of the ball valve in three directions can be designed according to the actual needs. In addition, the ball valve can also withstand shear deformation and compression deformation at the same time.
④ The internal friction damping of the ball valve is much larger than that of the metal ball valve, so when the ball valve shaker starts and stops to pass through the resonance area, the amplitude is much smaller than that of the screw ball valve shaker. Therefore, the near resonance shaker of the ball valve is used, its amplitude is relatively stable, but its energy consumption is greater than that of the metal ball valve.
⑤ The resistance of the ball valve to transmit sound is much greater than that of the metal ball valve, so the sound insulation is good and the noise is low during working hours.
As the ball valve is made of high polymer material, it is less able to adapt to high and low temperatures than the metal ball valve, and its stiffness is greatly affected by temperature. For the resonant ball valve vibrator, the temperature change is easy to cause the deviation of the working table; In addition, the ball valve has poor oil resistance and light resistance, and is prone to aging. Despite the above shortcomings spot
It is outstanding, so it is widely used in vibrating screening equipment. The flange sealing forms of the end and connecting plate of the pneumatic ball 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.