What are the Classifications of Polyurethane Screens? How to Choose?
Feb. 20, 2020
Vibrating screen is an indispensable main equipment in beneficiation and classification operations. It has many specifications and models. In order to meet different classification and dewatering purposes, the structure, size, size and distribution of screen meshes are various.
The screen surface is usually assembled by multiple screens. Traditional screens are usually made by punching, weaving or tailor welding. The material is carbon steel, stainless steel or alloy steel. The screen is severely impacted and worn by the ore, coupled with the high frequency of the vibrating screen, the welds are prone to fatigue and cracking, so the service life is short and the replacement is frequent, which seriously affects the production efficiency of the vibrating screen.
Polyurethane elastomer products have properties such as wear resistance, oil resistance, aging resistance, tear resistance, impact resistance, high elasticity, strong vibration absorption and large load supporting capacity. The screen made of polyurethane has light weight, high screening efficiency and is not easy. Hole blocking, abrasion resistance, impact resistance, long life and other characteristics have been widely used in metallurgical, mining, coal and other industries on the vibrating screen.
Polyester Bolting Cloth
Although the advantages of polyurethane screens are many, in the process of unreasonable selection, use and preparation, they will have a great impact on their lifespan, leading to increased operating costs of vibrating screens. Graphic polyester printing mesh supplier will share with you the classification of polyurethane mesh, how to choose it and the factors that affect its service life.
Classification of polyurethane screen mesh:
Polyurethane screens can be divided into dewatering screens, descreening screens and material classification screens according to their use; according to the raw material components used, they can be divided into polyester or polyether screens; according to the fixed method in the vibrating screen Divided into fastening type, bolt type and tension type screen.
Choice of polyester bolting cloth:
First, choose according to the purpose of the screen, determine whether the screen is used for classification or dehydration. The raw materials of the screen used for wet screening and dry screening are different. Polyether-based polyurethane screens should be used for water screening to prevent the screen from shortening its life due to hydrolysis. For dry sieving and screening of large materials, polyester polyurethane screens should be used. Their abrasion resistance and impact resistance are better, which can effectively improve the screen life.
Secondly, it is necessary to choose the installation structure of the screen according to the size of the screen aperture. For large holes (apertures of 60mm or more are recommended), it is recommended to use a bolt-type fixed structure. The impact of the screen surface is large, and the fixed form of the screen in other structural forms is easy to loosen. After the screen is loose, it strikes with the support beam, resulting in a short screen life.