A vacuum lifter uses suction generated by negative pressure to lift and move bags, drums or sheets. In powder processing plants, it's often used for handling bulk bags and is an invaluable tool for drastically reducing manual labor. However, if suction suddenly weakens or the load drops mid-air duri

The screen mesh of the centrifugal sifter is the most expensive component in the entire equipment. Once it is damaged, it not only means replacement costs, but also may lead to the mixing of screen debris into a large amount of materials, causing serious quality accidents. Many users blame frequent screen breakage on "poor mesh quality". However, based on numerous field cases, the real culprits behind premature screen failure are often these two overlooked operating habits.

Bad Habit 1: Unstable Feed Rate

Operators sometimes rush and dump a large amount of material into the sifter all at once, instantly exceeding the screen's processing capacity. The excess material piles up into a thick layer on the screen surface and during centrifugal rotation, it subjects the mesh to excessive squeezing and friction beyond its design limits. This accelerates wear and can even cause direct tearing. The correct practice is to maintain a steady, continuous feed rate, keeping the screen working within its rated load at all times.

Bad Habit 2: Aggressive Cleaning Methods

An even more insidious bad habit is using hard objects to knock on the screen or blasting it with high-pressure water jets during cleaning. Many operators, wanting to save time, grab an iron bar and tap the screen when they see clogged holes or aim a high-pressure water gun directly at the mesh. Both actions cause irreversible structural damage to the screen. The woven metal structure becomes deformed and misaligned upon impact. Even microscopic deformations invisible to the naked eye will quickly expand into holes during subsequent operation. The proper cleaning method is to remove the screen and gently brush away blockages with a soft brush or use low-pressure compressed air blown from the back side of the screen.

Installation Check

In addition, it's crucial to check for uneven tensioning of the screen before every startup. If the screen is installed with uneven force distribution, localized stress concentrations will occur during operation, which also makes it prone to premature breakage.