Drum screen is a commonly used particle grading and screening equipment. Because it is mostly used for sand grading, it can also be called drum screen. The roller screen has simple process layout and is often used for grading and screening of medium and fine materials to improve the quality of materials. As the roller screen has many advantages, such as the screen hole is not easy to block, the operation is stable, the noise is low, the screening cylinder can be closed, it is easy to close the dust collection, the use of special screen mesh, the screening efficiency is high, the service life is long and other advantages, so it is widely used in daily industrial, mining and other production. But once the drum screen is blocked, how can we solve it?

　　Generally, the drum screen with larger screening particles will not be blocked, and it will only be blocked when the screening particles are very fine or the moisture is large. How can we solve the problem once the drum screen is blocked?

　　1、 A device can be added to the fixed frame of the drum screen, and then the device rotates to drive the belt installed on it to continuously tap the surface of the screen hole, so as to extract the raw material particles blocked in the screen hole.

　　2、 The impact block can be used for impact. This method requires enough wall thickness of the supporting ring shaft sleeve to withstand the impact of the impact block when removing the blocked raw material particles.

　　3、 The impurities blocking the screen shall be flushed by water flushing. A stainless steel pipe with many small holes can be installed at the top of the roller screen, and the impurities blocking the screen can be washed away by the impact of water flow.

　　With the development of society and the progress of science and technology, Fangda Industry has also been developing new functions of the roller screen in production. The screen mesh of the roller screen is a steel wire mesh, and the size of the screen mesh can be configured according to the needs of users. The discharge guard frame, roller frame and large underframe are connected by bolts, which facilitates the transportation and installation of the machine.