Types de cribles vibrants et leur fonctionnement

Introduction to Vibrating Screens

Les écran vibrant is a kind of vibrating screening mechanical equipment suitable for any particle, powder, or mucus. At present, it is commonly used in China’s food, medicine, chemical industry, and metallurgy industries. The vibrating screen has the characteristics of large vibration amplitude, high vibration intensity, low frequency, and an elastic screen surface. In the process of operation, the maximum screening force is always maintained, so that the screening efficiency is high, the processing capacity is large, and the screen replacement is convenient. According to the current manufacturers, the large screen surface and large processing strength of the customizable vibrating screen can meet the production needs of different users.

 

 

 

Classification of Vibrating Screens

1. By Weight and Purpose

Les équipements de criblage vibrant peuvent être divisés en mining vibrating screens, fine screening vibrating screens, et laboratory special vibrating screens en fonction du poids et de l'objectif.

(1) Mining vibrating screen

• Eccentric Circular Vibrating Screen
• Tamis de déshydratation
• Probability Screen
• Tamis vibrant circulaire
• Drum Screen
• Linear Vibrating Screen

(2) Fine screening vibrating screen 

• Three-Dimensional Rotary Vibrating Screen
• Ultrasonic Vibrating Screen
• Swing Screen
• Linear Vibrating Screen
• High-Frequency Vibrating Screen
• Straight-Line Screen

(3) Specialty Screening Equipment

• Horizontal Air Flow Screen
• Inspection Screen

 

2. By Material Movement

Vibrating screens can also be classified based on the material’s motion trajectory:

• Cribles vibrants linéaires (les matériaux avancent en ligne droite sur la surface de l'écran).
• Cribles vibrants circulaires (materials follow a circular motion on the screen surface).

 

Principe de fonctionnement du crible vibrant

1. Three-dimensional rotary vibrating screen

Mechanism: The vertical motor is used as the excitation source, and the upper and lower ends of the motor are equipped with eccentric weights. The rotating motion of the motor is transformed into a horizontal, vertical, and inclined three-dimensional motion, and then the motion is transmitted to the screen surface. Adjusting the phase angle at the upper and lower ends can change the trajectory of the material on the screen surface.
Applications : Food, pharmaceutical, chemical, metallurgical, and other industries.

 

2. Linear Vibrating Screen

Mechanism: The linear vibrating screen is driven by double vibrating motors. When the two vibrating motors rotate synchronously and reversely, the exciting force generated by the eccentric block offsets each other in the direction parallel to the motor axis and overlaps into a resultant force in the direction perpendicular to the motor axis. Therefore, the motion track of the screen is a straight line. The two motor shafts have an inclination angle relative to the screen surface. Under the combined force of exciting force and material self-gravity, the material is thrown up on the screen surface and moves forward in a jumping straight line, so as to achieve the purpose of screening and grading the material.
Avantages : The utility model has the characteristics of low energy consumption, high efficiency, simple structure, easy maintenance, fully enclosed structure, and no dust overflow. The maximum screening mesh is 400 mesh, which can screen out 7 materials with different particle sizes.
Applications : It can be used to realize automatic operation in a pipeline.

 

3. Swing Screen

The swing vibrating screen is a low-frequency rotary vibrating screen imitating manual shaking.
Mechanism: Its principle is that the instantaneous motion is the synthesis of radial displacement and circular motion, with this displacement as the axis (spiral motion). The vibration exciter that can adjust the eccentricity produces nonlinear three-dimensional motion, and the material also produces the same motion, similar to manual operation, so as to achieve the purpose of screening. Combined with screening accessories, a more ideal screening effect can be obtained.
Features: It is suitable for spherical, cylindrical, flake, and even irregular materials that are easy to block the net and need precise screening.

 

4. Straight-line Screen

Mechanism: The high-frequency vibrating motor is used as the excitation source for the straight row screen. After the materials enter the system, they will make a three-dimensional rotation on the screen surface under the force of the vibration source. The flour and caking will be fully dispersed, quickly pass through the screen, and directly enter the lower surface bin. The impurities and foreign matter are separated and discharged to the slag discharge port, playing the role of “safety officer” on the production line.

 

5. Mining Vibrating Screen

The power device of this series of linear vibrating screens has two forms: direct drive of vibrating motor and indirect drive of exciter driven by an ordinary motor through a coupling, which can meet the needs of different environments. The screen surface has metal woven mesh, bar, casting, welding, punching, and other forms. The screen surface has either a single-layer structure or a multi-layer layout, which can meet the requirements of different screening operations.
Applications : It is used in metallurgy, mining, coal, building materials, electric power, the chemical industry, and other industries, especially in the metallurgy industry. It is a common screening machine under blast furnace trough, coking plant, concentrator, and so on.

 

Notre crible vibrant

En tant que professionnel mining equipments manufacture, JXSC always supplies the best mining products to fit your different requirements. It works well in our customers’ mining plant. Refer to the vibrating screen, follow the transmission mode and screen layers to introduce it.

Mode de transmission

V-Belt Drive: The motor drives the V-belt and then drives the transmission shaft. The number of revolutions of the vibrator can be selected arbitrarily, but the belt is easy to slip during operation, which may lead to screen hole blockage.

 

 

Direct Coupling Drive: The motor directly drives the transmission shaft. The coupling can maintain the stable number of revolutions of the vibrator and has a long service life, but it is difficult to adjust the number of revolutions of the vibrator.

Layers & Efficiency

• Our vibrating screen can make 1-4 layers, and the screening effect of a 2-layer screen is the best.
• Our screen has higher screening efficiency and productivity because the strong vibration of the screen box reduces the material blocking the screen holes.
• Our vibrating screen is with simply structure, and it’s convenient to remove and replace the screen surface. It also has the feature of less power consumption per ton of material.

 

 

Market Advantages

High screening accuracy, robust construction, and low maintenance—making JXSC vibrating screens a preferred choice in various industries.

Whether for mining or fine particle separation, vibrating screens enhance productivity with advanced designs tailored to industry needs. Choose the right type based on material properties and operational requirements for optimal results.