Vibrating screen is a mechanical device that uses the principle of vibration to screen, grade, filter or separate materials. It moves the material on the screen surface through vibration, thereby achieving the separation of materials of different particle sizes. The following is a detailed introduction to the vibrating screen:

1. Basic structure

The vibrating screen is mainly composed of the following parts:

Screen box: the main structure that carries the screen and the material.

Screen: the material is graded according to the size of the screen hole.

Vibrating motor: provides vibration force to drive the screen box to vibrate.

Vibration damping device: such as springs or rubber shock absorbers, to reduce the vibration transmitted to the base of the equipment.

Base: the structure that supports the entire equipment.

2. Working principle

The working principle of the vibrating screen is based on the exciting force generated by the vibration motor, which causes the screen box and the screen to vibrate periodically. The material is subjected to the vibration force on the screen surface, producing the following movements:

Stratification: the material is loose and stratified on the screen surface, smaller particles sink, and larger particles float.

Screening: particles smaller than the size of the screen hole pass through the screen hole to achieve grading.

Conveying: the vibration direction has a certain angle with the screen surface, pushing the material to move toward the discharge port.

3. Main types

According to the vibration mode and working principle, vibrating screens can be divided into the following types:

Linear vibrating screen: The screen box moves in a straight line, suitable for screening dry or wet materials.

Circular vibrating screen: The screen box moves in a circular or elliptical shape, suitable for screening medium and fine-grained materials.

High-frequency vibrating screen: The vibration frequency is high, suitable for screening and dehydration of fine-grained materials.

Ultrasonic vibrating screen: Combined with ultrasonic technology, it solves the problem of screen blockage in the screening of fine powder materials.

4. Application areas

Vibrating screens are widely used in the following industries:

Mining industry: used for grading and screening of ores.

Chemical industry: used for grading and filtering of powders and particles.

Food industry: used for screening of grains, condiments, etc.

Pharmaceutical industry: used for fine screening of pharmaceutical raw materials.

Environmental protection industry: used for solid waste treatment and sewage treatment.

5. Advantages

High-efficiency screening: The vibration frequency and amplitude of the vibrating screen are adjustable, and the screening efficiency is high.

Simple structure: The equipment is compact and easy to maintain.

Strong adaptability: can handle a variety of materials such as dry, wet, high temperature, corrosive, etc.

High degree of automation: can be matched with the production line to achieve automated operation.

6. Notes

Screen selection: select the appropriate screen material and aperture according to the material characteristics.

Vibration parameter adjustment: reasonably adjust the vibration frequency and amplitude to improve screening efficiency.

Regular maintenance: check the wear of the screen and replace it in time to avoid equipment damage.

Summary

Vibrating screen is an efficient and multifunctional screening equipment widely used in various industries. Its core principle is to achieve material classification and separation through vibration, with the advantages of simple structure, strong adaptability and high screening efficiency. Selecting the appropriate type and parameters of vibrating screen according to specific needs can significantly improve production efficiency.

Article Title: What is vibrating screen?
Author:Xingaonai
Reprint URL: https://www.cadana.cn/industral-news/what-is-vibrating-screen.html