В вибрационный возбудитель plays a crucial role in determining the screening efficiency, Поскольку это напрямую влияет на характеристики вибрации экрана. Восстановление, пожалуй, является наиболее важным компонентом вибрирующего экрана в отношении его влияния на эффективность скрининга.
Impact of vibrating screen exciter on screening efficiency
Generating the Vibration: The exciter creates the vibratory motion that causes material to stratify and pass through the screen mesh. Without a properly functioning exciter, there’s no screening.
Амплитуда и частота: The exciter controls the amplitude (the distance of the screen’s movement) и частота (the number of oscillations per unit time) вибрации. These two parameters are directly related to screening efficiency:
Амплитуда:
Low Amplitude: Insufficient stratification of the material bed. Particles are less likely to encounter and pass through the appropriate screen openings. Can lead to blinding (screen blockage).
High Amplitude: Excessive bouncing and “dancing” of the material bed. While it might seem like aggressive screening, it can actually reduce the probability of particles passing through the screen, especially finer materials. Also increases wear and tear on the screen.
Частота:
Low Frequency: Slower material travel across the screen, potentially leading to overloading and reduced throughput. May be ineffective for finer materials.
High Frequency: Faster material travel, potentially reducing the residence time of particles on the screen and decreasing the chance of successful separation. Can also create higher noise levels.
The Optimal Combination: The ideal amplitude and frequency are highly dependent on:
* Свойства материала: Particle size distribution, Материалы с хорошей воздухопроницаемостью определенно больше способствуют росту рассады., density, содержание влаги, липкость, п.
* Screen Mesh Size: Finer meshes generally require higher frequencies and lower amplitudes.
* Screen Angle: Steeper angles may require higher amplitudes to overcome gravity.
* Desired Separation Efficiency: How accurately you need to separate the different size fractions.
* Скорость подачи: The amount of material being fed onto the screen.
Stroke Direction and Angle: Some exciters allow control over the stroke direction (the angle of the vibratory motion relative to the screen surface). This influences:
Material Conveyance Rate: The speed at which material moves across the screen.
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For more detailed information on the effect of vibrating screen exciters on screening efficiency, пожалуйста, посетите: https://www.zexciter.com/en/a/news/impact-of-vibrating-screen-exciter-on-screening-efficiency.html
