The working principle of the vibrating screen is mainly based on the vibration generated by its excitation device, which causes the screen body to vibrate with a certain amplitude in the vertical direction. This vibration will cause the material to be excited on the screen surface and periodically thrown forward a range, thereby completing the material screening operation. Specifically, the working principle of the vibrating screen can be divided into the following steps:
The excitation device produces vibration: The excitation device of the vibrating screen usually consists of a vibration motor, an eccentric block an eccentric shaft, etc. When the motor starts, it will cause the eccentric block or eccentric shaft to rotate at high speed, thereby generating centrifugal force, and causing the screen body to vibrate in the vertical direction.
The material is subject to exciting force: The vibration of the screen body will cause the material on the screen surface to be affected by the exciting force. This excitation force will cause the material to jump, tumble, and other movements on the screen surface so that the particles in the material can be better separated and screened.
Material screening: During the vibration process, material particles smaller than the screen hole will fall through the screen hole into the collection device below, while materials larger than the screen hole will continue to stay on the screen surface and move forward along the screen surface until Discharge from the other end of the screen surface. In this way, the vibrating screen can screen materials according to their particle size.
There are many types of vibrating screens, including linear vibrating screens, circular vibrating screens, high-frequency vibrating screens, etc. Different types of vibrating screens differ in structure, vibration mode, and screening effect, but the basic principle is to use the joint action of vibration and screen surface to screen materials.
Vibrating screens are widely used in chemical, food, medicine, mining, metallurgy, building materials, and other industries. They are mainly used for screening, grading, impurity removal, and other processing of particles, powders, and other materials. Its advantages include high screening efficiency, large processing capacity, high screening accuracy, and simple structure.
What types of vibrating screens are there and what occasions are they suitable for?
There are many models of vibrating screens. The following are some of the main models and their applicable occasions:
1. ZDS series vibrating screen:
• Features: Single or multi-layer design
• Applicable occasions: Suitable for screening of small and medium particle size materials.
2. YA/YK series vibrating screen:
• Features: Multi-layer design
• Applicable occasions: Suitable for screening and classifying medium particle size materials. Among them, the YK series circular vibrating screen is a screening equipment designed with eccentric blocks, which is especially suitable for screening small and medium-sized particles.
3. ZSG series vibrating screen:
• Features: Multi-layer design
• Applicable occasions: Suitable for screening and classifying coarse-grained materials.
4. SZF series vibrating screen:
• Features: Single or multi-layer design
• Applicable occasions: Suitable for efficient screening of powdery or granular materials.
5. DZC series high-frequency vibrating screen:
• Features: Multi-layer screens available
• Applicable occasions: Suitable for efficient screening of fine-grained materials.
6. JZP series and SJF series turning vibrating screen:
• Features: The JZP series adopts a flip screen design, SJF series has an efficient, accurate, and comprehensive screening effect.
• Applicable occasions: Suitable for materials with various particle sizes such as coarse, medium, and fine, as well as materials with various densities and viscosities.
7. DYG series overflow vibrating screen:
• Features: Adopt new flow-regulating device
• Applicable occasions: Suitable for fine powder or materials with poor fluidity.
8. XC series rotary vibrating screen:
• Features: Using reciprocating rotation motion
• Applicable occasions: Suitable for screening of granular materials.
In addition, there are ultrasonic vibrating screens, linear vibrating screens (such as the DZSF series), drum screens, mining vibrating screens, hexagonal screens, slap screens, air flow screens, test screens, circular screens, dewatering screens, cement screens, etc. model. Each of these vibrating screens has its own characteristics and is suitable for different screening needs.
When selecting a vibrating screen model, it is necessary to comprehensively consider factors such as the properties of the material (such as particle size, density, viscosity, etc.), screening requirements, and production conditions to select the most suitable vibrating screen model.