Mining screen;Mining machinery；Welded screen；polyurethane screens

1. Rectangular hole screen Rectangular hole screen in order to meet the screening process requirements, under the premise of deformation of the mesh hole, the use of a certain proportion of long square holes, such as the original requirements of 3.5X3.5mm mesh holes changed to 3.5x5mm or longer long square holes. However, the direction of the mesh is different, to a certain extent, will affect the accuracy of the screening and the life of the screen. The flaky material in the stone is easily screened out when screened. So this kind of screen can only be used in the hole is not serious, stone in the basic no flaky material screening. Diamond anti-blocking screen 2. Diamond hole anti-blocking screen, the use of this screen, it is made with two adjacent have small vibration of the same sieve strip woven. There is a better anti-blocking effect. Triangle anti-blocking screen 3. Triangular hole anti-blocking screen. The screen is characterized by two adjacent screen strips, one for the still sieve strip, the other for the moving screen strip. The basic principle is to extend the two-dimensional fixed hole of the plane to the three-dimensional three-dimensional variable mesh hole, and to establish effective vibration differences by using the secondary vibration generated by the adjacent sieve in the random vibration. Realized the constant change of the perforation in the screening, there is relatively no fixed critical particles of stone, the specific approach is in two relatively immobilized still sieve strip, set a relative vibration amplitude of a large moving sieve, moving sieve can be the stone during the casserage bounce or make it through the sieve. According to the characteristics of stone, the relative elastic strength and vibration amplitude of static and dynamic screens are adjusted accordingly, so that the screen can be in a good screening state, the screening efficiency than fixed mesh screen can be improved by about 30%, the basic realization of the self-cleaning function of the screen, greatly reducing the blockage of the sieve hole. The screen's still sieve strip is thicker than the moving screen, so it not only increases the wear resistance of the screen, but also improves the efficiency of the screen. At the same time, the screen structure of the screen can also greatly reduce the contact point between stone and the perforation, reduce the occurrence of blocking holes.