1. Fracture of pipe girder. The thin wall of the pipe girder may lead to fracture. At this time, the same type of thick-walled pipe or the first type of pipe girder should be selected. However, it should not be too large or too thick, because this will increase the vibration quality of the sieve and bring many problems; the connection of the sieve plates of dehydration and de-intermediation sieve nets must have horizontal and vertical strips; if there is no vertical strips, water will leak from the gap between the sieve nets and wash the pipe girders, which are easy to break at the scouring point; the wider the sieve, the easier the pipe girders will break. According to the experience of using the sieve, when the sieve is sifted. When the width is more than 3m, it is better to use two channels.
2. Beam fracture Cross beam fracture is mostly due to the long working time at critical frequency, a large number of high-strength bolts to tighten the side plate are relaxed, serious deformation of the spring makes a great difference between left and right, and may also lead to excessive weight error of eccentric block, causing structural damage and cross beam fracture. At this time, the damaged structural parts and beams should be replaced, the bolts should be tightened, and the quality of eccentric blocks should be adjusted.
3. Fracture of screen frame The screen frame is liable to break because of tremor. The best way to solve this problem is to thicken the side plate, or to increase the attachment plate to the local area of the side plate near the exciter to enhance the rigidity of the whole screen frame.