二、Difference between drum screen and vibrating screen

• Apr 22, 2022
• Vibrating screen is the use of vibration motor generated by the exciting force for screening, belongs to the vibrating screen, commonly used mining vibrating screen has a circular vibrating screen, linear screen, etc....

Both are widely used screening equipment, but the difference in working methods and principles also means the difference in output and the type of material suitable for screening.This paper analyzes the difference between drum screen and vibrating screen from the following six aspects.

Three, the working principle is different

Drum screen

 

The drum device is mounted on the frame at an inclined Angle.The motor is connected with the drum device through a coupling through a reducer to drive the drum device to rotate around its axis.When the material enters the drum device, due to the tilt and rotation of the drum device, the material on the screen surface turns over and rolls, the qualified material (under the screen product) is discharged from the discharge port at the bottom of the rear end of the drum, and the unqualified material (on the screen product) is discharged from the discharge port at the tail of the drum.

 

Linear vibrating screen

 

The use of vibration motor excitation for vibration source, so that the material in the screen is thrown up, while forward linear motion, material from the feeder evenly into the screening machine feed port, through the multi-layer screen to produce several specifications of the screen, screen, respectively from the respective outlet discharge.

 

Circular vibrating screen

 

The screen surface is fixed on the screen box, the screen box is suspended or supported by the spring, and the bearing of the main shaft is installed on the screen box, which is driven by the belt wheel and rotates at high speed.The eccentric counterweight plate is installed on the main shaft, and the centrifugal inertia force is generated along with the rotation of the main shaft, so that the vibration of the screen box forms an approximate circular trajectory.

 

Four, the classification is different

Roller screen according to the number of different mesh layer, can be divided into a single layer, double layer and three layer vibrating screen.This point is similar to the vibrating screen, according to the number of screen surface layer can be divided into single, double, three and four layers of vibrating screen.

 

According to whether the drum screen motor is connected with the bearing, it can be divided into shaft-free drum screen and shaft-free drum screen.

 

According to the vibrating screen surface movement trajectory is different, can be divided into circular vibrating screen and linear vibrating screen, the above has been introduced.

 

V. Different output and application occasions

 

Drum screen large output, long life, suitable for large output requirements.

 

Linear vibrating screen production is small, suitable for screening fine specifications of materials.

 

Circular vibrating screen with large output, suitable for medium and large production lines with large output requirements.

 

Because of the different screening methods of vibrating screen and drum screen, they are good at screening materials are different:

 

(1) containing stone, stone is larger, the material viscosity is larger, because the vibrating screen vibration strength is large, choose to use the vibrating screen effect is better.

(2) for dust, small particles of material screening is the weakness of vibrating screen, the use of drum screen screening effect will be better.

(3) screening dry material selection using vibrating screen is not easy to plug holes, screening effect is better.

 

Six, screening accuracy is different

Vibrating screen is a vibrating motor as a vibration source of screening equipment, so the screening accuracy is high, drum screen is a kind of high production screening equipment, and screening accuracy is not high vibrating screen.

 

Vibrating screen and drum screen respectively have their own way of working and screening principle, some raw materials can be screened through them, but different sites and different material requirements, should choose suitable screening machinery, in order to achieve good screening effect.