Screening, according to the nature of the material, will produce a variety of forms of mesh plug. The main reasons for the plugging of the sieve are as follows: (1) contains a large number of particles near the separation point; (2) material moisture content is higher; (3) spherical particles or sieve with multiple contact points.
Screening, according to the nature of the material, will produce a variety of forms of mesh plug. The reasons for the plugging of the main screen are as follows:
(1) contains a large number of particles near the separation point;
(2) material with high water content;
(3) spherical particles or materials with multiple contact points to the sieve opening;
(4) static electricity will occur;
(5) materials with fiber material;
(6) more flaky particles;
(7) weaving through the coarse mesh screen;
(8) rubber screen and other thick screen, hole design is unreasonable, did not reach the small under the large, leaving the particles stuck.
Because the need to screen most of the material particles are irregular, so the reasons for the blockage is also varied. In order to effectively prevent the clogging of the screen, it is necessary to take measures for the reason of the above-described screen plugging. When the material grain size is smaller, the clay content is more, and the sieve particle size is small, the moisture to the screen blockage plays the decisive role. When the moisture content in the material is greater than 5%, if the unconditional drying of the material, should screen surface, sieve holes for targeted selection. When the water is greater than 8%, should be used wet sieving. On the more granular material, you need to change the way of broken materials and different ways of breaking the particle size with the process. Reasonable adjustment of screen tension is an effective way to reduce the plugging of the screen. Reasonable tension makes the screen with the support beam produce a slight secondary vibration, thus effectively reducing the phenomenon of plugging holes, the specific approach is, The tension hook made of constant tension mechanism, that is, the tension bolt on the installation of spring.
