Products made by polyurethane elastomer have wear resistance, oil resistance, aging resistance, tear resistance, impact resistance, high elasticity, strong vibration absorption and large load support capacity and other properties. The screen made by polyurethane has such characteristics as lightweight, high screening efficiency, not easy to block holes, wear resistance, impact resistance, long life, etc., and has been widely used in vibrating screens in metallurgy, mining, coal and other industries.
Although there are many advantages of polyurethane screens, in the process of unreasonable selection, use and preparation, it will have a great impact on its life, resulting in an increase in the operating vibrating screens price. Therefore, how to choose the screen is particularly important.
First of all, it is necessary to select according to the use of the screen and determine whether the screen is used for grading or dehydration. The raw materials of the screen selected for wet screening and dry screening are different, and the PU screen mesh of the polyether type should be selected for water screening to prevent the shortening of the life of the screen due to hydrolysis. For dry screening and large materials, the screening should be made of polyester-type polyurethane screen, which has good wear resistance and impacts performance and can effectively improve the life of the screen.
Secondly, according to the size of the screen aperture to choose the installation structure of the screen, for the large hole (recommended more than 60mm aperture) screen is recommended to use a bolted fixed structure, due to the large aperture of the screen processing material is relatively large, the impact on the screen surface is large, other structural forms of the screen fixed form is easy to loosen after the screen is loosened and the support beam between each other, resulting in a shortening of the screen life.
After choosing the correct polyurethane screen mesh, the appropriate use of it is required to ensure the best performance displayed. However, many users tend to ignore this point in the process of using polyurethane screens. For example, the tensioning screen in the use of the process tends to be loosened by large pieces of material, so it is necessary to tighten the bolt regularly. If a long time has passed, the tension bolt may lose, resulting in knocking between the screen and the support ribs and affecting the life of the screen. At the same time, there is also an inlet design, it is recommended that the feeding method is not vertical sieve surface, the feeding direction is inclined along the direction of logistics, and the feeding height is unfavorable to exceed 400mm, so as to prevent the impact force from being too large and smashing the screen.
Anpeng harp screens add the net, which means no longer needs to regularly tension the screen during the use of the process in order to better protect the screen surface to ensure that the screen surface and the screen seam will not be abnormally worn. At the same time, it can prolong the service life of the screen, increase the endurance capability of the screen,and the stability of the sieve seam in the using process, and it won't deform for carrying weight with the more stable fineness screened from it. The increase of the open hole rate by 10%-15%, can outstandingly improve the screening efficiency.
Adhere to innovation-driven, do not forget the original intention! Anpeng insists on improving and upgrading innovative products in order to present high-quality PU screen for its customers. Anpeng polyurethane screen has already become a well-known representative of China's high-end manufacturing industry.