High-frequency Screen

High frequency vibration screen called high-frequency screen, high-frequency vibration sieve (high-frequency screen) from the exciter, pulp distributor, screen frame, chassis, suspension springs and sieve and other components.

High High frequency screen has efficiency, small amplitude and high frequency of screening. With the general principles of screening equipment is different, because the High frequency screen using high frequency, on the one hand destroyed the pulp surface tension and fine materials, high-speed oscillation screen surface, accelerating the large density of useful minerals and analysis from the role, increase the probability is less than output granularity With the the sieve materials in contact. Resulting in better separation conditions, so that the separation is less than the size of the material, especially material than the major grain and pulp together into screen under the product through the sieve.

High frequency screen with tube type eccentric shaft vibration exciter and eccentric block to adjust the swing, the material screen drip line length, screen size and more, has the advantages of reliable structure, strong exciting force, high screening efficiency, the vibration noise is small, sturdiness and durability, convenient maintenance, safety, high frequency vibration screen is widely used in mines, building materials, transportation, energy, chemical industry products classification.

High frequency screen structure: mainly composed of screen box, exciter, hanging (or support) device and motor and other components. Electric motor through V-belt driven exciter spindle rotation, due to the centrifugal force of the unbalanced weights on the exciter, so that vibrating screen box. Changing the exciter eccentric weight to obtain different amplitude.

High Frequency Screen Features

  • 1, no moving parts, no need to add oil;
  • 2, simple structure, easy maintenance, durable, low failure rate;
  • 3, use of vibrators resonance principle and double plastid critical resonance mode of operation, small power needed to drive at startup without large starting current, low noise;
  • 4, the vibrator starts, instantaneous amplitude can achieve stable value. When parking, it can disappear instantaneous amplitude, flat and allow direct starting and stopping at the rated voltage, current and amplitude.
  • 5, sieve or excitation amplitude adjustable by changing the exciting force screen body (adjust excitation) to control the undersize particle size, different grain size to guarantee ore concentrate taste is very helpful;
  • 6, while the screen body vibration is also generated between the opposing wobbling sieve sieve strip, slit sieve easy to block.

High Frequency Screen Factors Affecting

The main factors affecting High frequency screen and other screening machine: the technical and economic indicators of the screening process is screening efficiency and productivity, quality indicators for the former, the latter is the number of indicators. There is a certain relationship between them, but also with many other factors, these factors determine the outcome of the screening. factors affecting screening process can be roughly divided into three categories:

  • The physical properties of the material to be screened: Including the composition of the material itself granularity, moisture, clay content and particle shape.
  • Effect of the screen surface properties and structural parameters: Linear High frequency screen is to make the particles and the vertical movement of the screen surface, the high efficiency, large production capacity. The relative motion of the particles and the screen surface is parallel to the main sports bar screens, flat-screen high-frequency high-frequency vibration screen, sieve tube, the screened efficiency and productivity are low.
  • Effects of production conditions: When a large sieve load, low screening efficiency. In the circle of peace rate largely depends on the high-frequency screen sieve size and overall screening efficiency; sieve larger, requiring the lower screening efficiency, the productivity is higher.

Technical Data

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