The vibrating screener is usually combined with other equipment like cone crusher into a complete production process, and is also one of the important unit on the production line. The vibrating screen’s efficiency directly affects product capacity and quality. Improving the vibrating screen’s working efficiency can make materials screened more sufficiently,then reduce impurities and defective product,finally improve the product quality. At the same time, reducing the accumulation and accelerate stratification of material results in improving the output of the production line. Then how to improve the efficiency of vibrating screens? Following are four tips for your reference.

1.Optimize screening process

• Selection of screening media:

 We should select the appropriate screen mesh according to material’s characteristics,such as shape,density,size,water content,mud content,etc. High sticky materials are easy to clog the sieve holes, and globular & cube materials are easy to pass the square and circular sieves,but the strip and sheet materials are not easy to pass.So the more easily screening materials,the higher screening efficiency.

Therefore,we need to choose the appropriate hole aperture, wire diameter and design, and select the appropriate screen media according to the material characteristics, such as polyurethane screen, rubber screen , steel screen, etc.,finally improve screening efficiency and the service life of the screen.

Choose a screen with more holes which can reduce clogging and improve screening efficiency for the fine materials screening.

• Inclined angle of the screen:

The inclined angle of the screen is related to the processing capacity and efficiency, and is generally within 5-25 °.We can adjust the material’s velocity of flow by adjusting the screen angle,and then improve screening efficiency.  

• Vibration parameters:

 Adjust the vibration frequency and amplitude according to the material characteristics and screening requirements to ensure that the material is evenly distributed on the screening surface and effectively passes through the screen. The design of vibration direction angle needs to consider the properties of the screened material. For fine materials, it is advisable to use larger ones; For materials with strong viscosity or wear resistance, they should be small.

Generally,the Horizontal vibrating screen is 30-60 ° . Choose low frequency and high amplitude for graded work, and high frequency and low amplitude for dehydration and media material removal work.

2. Improve operations

• Constantly even feeding: 

Ensure the material enters the vibrating screen uniformly and continuously.Overfeed and underfeed both affect the screen efficiency.  It can be combined with a vibrating feeder or a belt feeder for constant even feeding. 

• Control the feeding speed: 

Adjust the feeding speed according to the material characteristics and screening requirements to ensure that the material has sufficient time on the screen surface for effective screening.  

• Material preparation: 

For materials that are easy to clumping and have strong viscosity, can improve their flow ability on the screen by adding flow ability modifiers and adjusting the water content of the material, thereby increasing screening efficiency.

3. Strengthen maintenance

• Regular cleaning:

Regularly clean the blockages on the screen surface to ensure smooth screen holes and improve screening efficiency.

• Check the wear part of the screen surface:

Regularly inspect the wear of the screen surface, replace the badly worn screen surface in time, and ensure the screening effect. At the same time, check the tightness of the fastening screws of the screen to ensure that it is firmly installed on the bracket.

• Lubrication transmission system:

Regularly lubricate the transmission system of the vibrating screen to reduce wear and faults and improve operational stability.

4. Other techniques

• Adjusting the phase angle of the eccentric block:

Some vibrating screens can adjust the screening efficiency by changing the phase angle of the eccentric block to alter the motion trajectory and residence time of the material on the screen surface.

• Adding counterweights: 

Adding counterweights on the fly wheel and pulley can increase the amplitude of the vibrating screen, thereby improving its processing capacity.

Take care of your equipment anytime, anywhere. For more information, you can also contact your local dealer or Borgers service team!