difference between drum screen and vibratingscreen

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Recently a friend left a message to consult the difference between drum screen and vibrating screen, ask how to choose.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.

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.

  1. 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.

 


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