一、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.

 

 

First, the screening method is different

 

Vibrating screen and drum screen belong to screening equipment, when the two screening methods are different:

 

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.

 

Drolling screen is another form of screening, in the screening process, the equipment will not appear vibration, but the general motor and reducer through the bearing to drive the drum rotation, material in the drum due to the rotation of the drum from high to low through the screen, and its successful screening, belongs to rolling screening.

 

Second, different shape and structure

 

The two are so different in appearance that it is easy to tell them apart.

 

Drolling screen: is a cylinder, cylinder appearance with a layer or multiple layers, or several sections of screen to increase the screening specifications, drum screen volume is generally large, mainly motor, reducer, drum device, screen, frame, sealing cover, inlet and outlet composition, drum device must be added to the steel ring to prevent deformation of drum screen.

 

Vibrating screen is mainly composed of screen box, screen frame, screen mesh, vibration motor, motor pedicle, vibration spring, bracket, etc.

 

Linear vibrating screen: 2 vibration motors are installed at the bottom of the equipment, which can be divided into several layers.

 

Circular vibrating screen: also known as single shaft vibrating screen, its supporting mode has two kinds of suspension support and seat support.

 

Roller screen and vibrating screen mesh is generally made up of mesh or punching screen mesh, screen size is generally 6mm-8mm.

 

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.