What are the components of a vibratory screen?

Vibrating screen is widely used in mining industry, it is a kind of high speed vibrating mechanical equipment. It is mainly used to screen materials such as ores, coal and other sand and gravel aggregates. So what parts does a complete vibrating screen consist of?

The main components of a vibrating screen are: drive system, side plate, exciter, exciter beam, lifting beam, cross beam, vibration damping spring and screen deck.

The role of key components:

  1. drive system

The drive system consists of a exciter in combination with a motor or directly with an excitation motor.

The drive motors provide power for the vibrating screen to operate. It is connected to the vibrating body and generate the necessary force to produce the vibrating motion.

  1. side plate

The side panels are the main structure of the screen and form the overall frame of the machine when connected.

It is made of one-piece steel plate, which is made of HUCK bolts hydraulically connecting various steel parts used for support points. The structure is more rational, eliminating stress concentration and avoiding resonance. The non-welded side plates can effectively extend the service life of the vibrating screen.

  1. Exciter

It makes the vibrating screen run through vibration and is the main power source of the equipment.

The exciter is connected to the stationary body. Through strong vibration, it drives the exciter beam to synchronize the movement. The body on the screen spring is made to vibrate in an elliptical motion. As a result of these vibrations, coal or other materials in the inclined screen body are regularly screened in the direction of the slope.

  1. Exciter beam

Part of the exciter will be mounted on the exciter beam to drive the vibration operation of the whole equipment.

The support structure includes beams, columns and other components that provide stability and support for the vibrating screen. It ensures that the screen runs smoothly and does not vibrate or shake excessively.

  1. lifting beam

The lifting beam in the vibrating screen is a key component used to support the screen mesh and vibration system. The lifting beam can keep the screen mesh arranged horizontally, so that the material is evenly distributed on the screen surface, and can withstand the impact and vibration force of the material to ensure the stability and durability of the screen mesh. At the same time, the lifting beam also supports the vibration system, so that it can produce high-frequency and high-amplitude vibration force to promote the screening process. Therefore, the lifting beam plays the role of supporting and maintaining the vibration system and screen mesh in the vibrating screen.

  1. cross beam
  • support function: the beam plays the role of supporting the screen mesh, stabilizes the structure of the screen frame, and prevents the screen mesh from being destabilized or deformed due to vibration.
  • Transmission of vibration force: the beam, by connecting with the vibrating machine, transmits the vibration force to the screen frame and screen mesh, so as to make them vibrate, thus realizing the screening of materials.
  • Shock absorption: the beam can absorb part of the vibration force, reduce the noise and vibration produced by the vibrating screen, and improve the screening efficiency.
  • Increase strength: the existence of beams can improve the overall strength and rigidity of the vibrating screen, so that it can withstand greater loads and vibration force.
  1. vibration damping spring

In the vibrating screen, vibration damping springs play the role of buffer and shock absorption. They absorb and dissipate vibration energy through elastic deformation, reduce the resonance phenomenon of the vibrating screen, and improve the working stability and sealing of the vibrating screen.

Vibration damping springs are usually installed in the lower part of the vibrating screen, which can effectively reduce the vibration amplitude of the screen surface, reduce the impact and wear of screening materials on the screen mesh, and extend the service life of the screen mesh. In addition, the vibration damping spring can also reduce the transmission of the vibrating screen to the vibration source and reduce the noise and interference with the surrounding environment.

In short, the vibration damping spring plays the role of shock absorption, buffer and protection equipment in the vibrating screen, which improves the working efficiency and stability of the vibrating screen.

  1. Screen deck
  • Particle Size Separation:

The sieve plate contains openings or perforations of specific sizes.

As the vibrating screen operates, the material to be screened is fed onto the sieve plate.

The vibrations of the screen cause the particles to move and fall through the openings in the sieve plate.

  • Screening Efficiency:

The effectiveness of a vibrating screen in separating particles depends on the design and size of the sieve plate openings.

Properly sized openings allow smaller particles to pass through while retaining larger ones.

Achieving the desired screening efficiency requires selecting the appropriate sieve plate with the right opening size.

  • Material Stratification:

The sieve plate aids in the stratification of material on the screen.

Stratification refers to the layering of particles based on size as they settle on the sieve plate.

This layering effect is important for efficient screening and separation of different-sized particles.

The above is a complete vibrating screen basic components, exciter and screen plate will be screened according to the specific circumstances of the material selection of the appropriate model.

Umair Akram

Umair Akram

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