Trommel screen is a machine widely used in sorting technology. It controls sorting by particle size with high sorting precision. The cylinder of the Trommel screen is generally divided into several sections, which may be determined according to specific conditions, and the sieve holes are arranged from small to large, and the sieve holes on each section have the same aperture. In order to improve the sorting precision and avoid the small particle material being sieved out in the large-diameter sieve section, the material must be fully turned in the trommel screen, and the moving speed cannot be too fast. Inner wall of the trommel screen is equipped with a flexible plate, and its function is to raise the material particles, so that the particles of different particle sizes have the opportunity to contact the mesh hole as much as possible. If the pore diameter is met, the particles can be sieved to achieve the drum screening. The purpose of the election.
In order to improve the screening efficiency, the speed of the material moving in trommel screen should not be too fast, otherwise the screening will be insufficient and incomplete. Therefore, the trommel screen generally has a strict installation angle, which is usually 5°. Of course, in actual situations, adjustments can be made as needed.
The roller segment is connected to the trommel screen turntable by nuts and screws, so the installation and disassembly of the roller segment is convenient. Since the drum section is connected to the turntable, when the turntable is rotated by the drive unit, the drum section is also rotated together.
The drum is divided into three sections, each section is 80 cm long and has a diameter of 60 cm, and the apertures are 13 mm, 50 mm, and 200 mm, respectively. The first section of the sieve component is mainly fine coal ash, mud, etc., as well as fine metal particles; the second section of the sieve component mainly includes small bricks, stones, parts of plastic, paper, etc.; The permeable components of the section are paper, plastic, bamboo, rubber, and the like. The use of a trommel screen creates very favorable conditions for subsequent wind selection.
If the drum is in a unitary form rather than a segmented form, processing will be no small difficulty. Because the whole drum is divided into three sections, the total length is 2.4m. If the hole is punched in a whole piece of steel, the weight of the steel plate is very heavy, and the coil is also very difficult and difficult to install; and if the three sections are separately processed, The weight is much lighter, it is easier to install the coil, and it is also possible to select a more suitable aperture according to the actual particle size of the material, which helps to improve the screening efficiency.