How To Improve The Screening Efficiency Of Banana Screen?

Improving the screening efficiency of banana screens can be achieved by adjusting four aspects: equipment, process, materials, and maintenance. This includes optimizing screen parameters, ensuring uniform feeding, improving material conditions, maintaining the screen surface and structure, and strengthening sealing and unclogging.

How to improve the screening efficiency of the banana screen?

1. Adjust the amplitude

Adjust the amplitude of the banana screen according to the characteristics of different materials. For example, materials with high specific gravity and good flowability are suitable for low amplitude, while materials with poor flowability require high amplitude for screening.

2. Screen Replacement

Replace screens with different mesh sizes according to the material particle size to achieve screening of various materials. At the same time, pay attention to the quality of the screen and the conditions of use to avoid screen breakage due to excessive vibration force or excessive feed rate.

3. Vibration Force Adjustment

Adjust the vibration force by changing the angle of the upper and lower counterweights of the vibrating motor according to the output requirements and the ease of material screening. Increase the vibration force when screening difficult-to-screen materials, and decrease the vibration force when screening materials with a high screening rate.

4. Structural Optimization

By installing a rotating rod and a spreading auger designed in the opposite direction, the accumulated material is conveyed from the center to both sides, avoiding uneven material distribution, reducing return material handling, and improving the working efficiency of the screening machine.

Working principle of the banana screen

The banana screen uses a zigzag pattern with different inclination angles to keep the material layer thickness constant from the inlet to the outlet, thereby improving screening efficiency. The slope of the banana screen feed end is relatively large, generally 34°. As the material advances and descends, the slope gradually decreases until it reaches the discharge port, where the slope drops to approximately 10°. This gradually decreasing slope design results in varying material flow rates at different stages of the screen. The larger inclination angle at the feed end leads to a higher flow rate, allowing large pieces of material to pass through quickly and fine particles to pass through the screen openings earlier. Compared to traditional grading screens, the banana screen improves screening efficiency by 50%-100% while controlling the floor space required.