Industrial screening machine 

Product description
Direct discharge screen is a kind of equipment commonly used for screening granular materials. Its main body is usually a cylindrical or square screen box, with multiple layers of screens inside. After the materials enter from the feeding port at the top of the equipment, they move forward along the screen surface in a straight line under the dual action of their own gravity and the vibration of the screens. Fine particles smaller than the screen hole diameter pass through the screens and fall. The coarse particles larger than the mesh diameter of the screen are discharged from the discharge port at the end of the screen box. It features high screening efficiency, compact structure and easy operation, and is widely used in the material classification treatment of the chemical, food, building materials and other industries.
 
Working principle
1. Material input: Granular materials enter the screen box from the feeding port at the top of the equipment and are evenly distributed on the surface of the screen mesh.
2. Vibration drive: The vibration motors (or vibration devices) at both ends of the screen box generate high-frequency vibrations, driving the screen mesh to perform reciprocating motion along a linear or elliptical trajectory.
3. Screening process: Under the effect of vibration, the materials move forward in a straight line along the screen surface, while colliding and rubbing against the screen mesh. Fine particles smaller than the aperture of the screen pass through the screen and fall, becoming the undersieved material. Coarse particles larger than the pore size continue to move forward on the screen surface and become the material on the screen.
4. Stratification and discharge: If it is a multi-layer screen structure, the materials will pass through screens of different pore sizes in sequence according to their particle sizes, achieving multi-stage screening. Ultimately, the materials on and off the screens at each level are discharged from the corresponding discharge ports respectively, completing the material classification.
 
Product Features

- High screening efficiency: The vibration drive makes the materials advance in a straight line, with a high screening rate and large processing capacity.
- Compact structure: The modular design supports multi-layer screens, occupies a small area and is easy to install.
- Easy operation: The vibration parameters are adjustable, the screen replacement is convenient, and the maintenance cost is low.
- Wide application: Suitable for dry materials in multiple industries such as chemical engineering and food, and can be equipped with dust removal and environmental protection design.
- Cost-saving: The single motor has low energy consumption, durable materials and a long service life.

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