Even though many people have never heard about vibratory screeners, they are actually one of the simplest pieces of equipment out there that is capable of handling a number of dry materials. Screeners are capable of removing fines, dividing material into more than one product using particle distributions and scalping oversized materials. To help you understand some of the common reasons why screeners have problems, the top issues are outlined below.
One of the main reasons why screens tend to fail is because of a hole or tear in the screen itself. If the screen ends up tearing, it causes the larger particles to end up getting through when they should have been rejected. This can cause a lot of complications. Beyond making it dangerous to the end user, it can also cause products not to pass the final inspection due to not meeting the recommended specifications. As soon as the screen sustains a tear, you have to get it fixed. Otherwise, you cannot be assured that all of the particles are going to be rejected properly.
Failure often stems from wire fatigue. During the screening process, the wires are continually being vibrated. It only makes sense that the wires are going to grow weak and eventually break. Abrasion also causes the wires to wear out from the hard materials passing over them.
This tends to occur whenever some of the open areas in the screen end up getting blocked by various materials. It might be the result of material being dumped onto the screen more quickly than the screen is able to sift through it. It could also be caused by selecting a screen that isn't right for the job. Blinding tends to follow behind a slow degradation in the performance of the screener. You might notice a drop in quality or quantity when the screen starts wearing out.
Material bypass occurs whenever something causes the mesh in the screen to pull away from the frame, thus allowing material to get between the frame and the mesh. While the seal that runs between the housing and deck is generally reliable, there is a chance that it could fail as well. If one of these things happens, you need to get it taken care of right away to prevent material from slipping through.
Screeners are great tools when they work properly, but you have to make sure there is nothing wrong with the unit to prevent anything from slipping by and causing problems with the product.Share