Introduction
In the process of material separation, the vibration sieve (also known as vibratory sieve) is used extensively. It is mainly used to filter out the material which size is larger or smaller than the filter mesh and achieve uniform size of the material. This article is devoted to introducing the structure, working principles and application of vibration sieve.
Structure of Vibration Sieve
A vibration sieve has three major components—frame, screen mesh and vibrator.
The frame of the sieve is usually composed of a base, a cover and beams. It’s usually made of steel or other stainless steel material, which makes the sieve stable and able to bear various loads and high screening efficiency. The screen mesh is tightened on the frame and is made of wire mesh or perforated metal plate, depending on the needs. Different materials require different meshes—generally 0.1 to 6mm.
The vibrator installed in the sieve is generally an electromagnetic motor. As the mesh is excited by the motors, the particles are continuously shaken and thrown forward on the mesh surface. The particles which can pass through the mesh will move downward, and then discharged from the discharge port. The particles that cannot pass through the mesh can be counted, weighed, and bulk packaged.
Working Principles of Vibration Sieve
The working principle of the vibration sieve is a complex structure driven by an electromagnetic motor. A specially designed eccentric block is installed in the electric motor. When the eccentric block rotates, it produces the centrifugal force. Then, the centrifugal force produces vibration and the material moves along the sieve surface, which leads to the separation of material.
At the same time, the large particles are blocked, while the small particles are filtered and discharged through the sieve. The screen surface is also reversely deflecting, which prevents the blocking of the large particles.
Application of Vibration Sieve
The vibration sieve is widely applied in the chemical industry, food, pharmaceutical industry, abrasive material, ceramic industry, rubber industry, metallurgy, mining, construction, and other industries due to its characteristics such as large handling capacity, low energy consumption, environmental protection, and easy maintenance.
In the chemical industry, the vibration sieve is used to filter harmful particles and ensure the safety of production. In the food industry, it is used to separate the qualified products from raw materials, which provides the guarantee for the health and quality of food. In the pharmaceutical industry, it is used to classify various tablets, capsules, and pellets to ensure drug performance. In abrasive materials, it is used to classify various rocks to meet the production needs. In the ceramic industry, it is also used to separate raw materials in order to ensure quality.
Conclusion
As a linear vibrating sieve, the vibration sieve is a rectangular screening equipment with simple structure and convenient operation. It is widely used in many industries due to its large handling capacity, low energy consumption, environmental protection, and easy maintenance. Therefore, it is necessary to select the vibration sieve for materials separation.
