River pebble grading screen Shackless drum screen

River pebble grading screen Shackless drum screenThe shaftless drum screen mainly consists of a motor, a reducer, a drum device, a frame, a sealing cover, and a material inlet and outlet. The drum device is tilted and installed on the rack. The electric motor is connected to the drum device through a reducer and a coupling, driving the drum device to rotate around its axis. After the material enters the drum device, due to the tilt and rotation of the drum device, the material on the screen surface flips and rolls, causing qualified materials (products below the screen) to be discharged through the outer circle of the drum screen. The specifications and models of the coke drum screening machine, and unqualified materials (products above the screen) to be discharged through the end of the drum. Due to the flipping and rolling of materials within the drum, materials stuck in the sieve holes can be ejected to prevent clogging of the sieve holes.

The drum is divided into three sections, each with a length of 80cm and a diameter of 60cm, with apertures of 13mm, 50mm, and 200mm respectively. The sieving component in the first section is mainly fine-grained coalAsh, soil, etc., as well as small metal particles; The screening components of the second section mainly include small bricks, stones, some plastic, paper, etc; The screening components in the third paragraph include paper, plastic, bamboo, wood, rubber, etc. The use of drum screens creates very favorable conditions for subsequent air separation.

Tilt angle of drum screen

Due to the fact that the drum screen mainly drives materials to a high place and rolls them down, using the inertia of the materials to complete screening. Unlike the vibrating screen, which can move animal materials forward through vibration power, the installation of the drum screen must have some tilting angles to allow the materials to move forward while screening.

The tilt angle of a drum screen refers to the angle between the drum and the horizontal plane, which affects the projection shape and size of the sieve hole on the horizontal plane, directly affecting the speed of particle movement on the screen surface.

The appropriate tilt angle should allow the material to pass through the screen surface at a suitable speed, without accumulating on the screen surface and affecting the screening efficiency, nor will it quickly pass over the screen surface and affect the screening effect.

In general, this tilt angle is more appropriate between 5 and 30 degrees. The material is lighter and has a finer particle size, and the inclination angle can be slightly larger, approaching 30 °; When the material is heavy, the inclination angle should be smaller, below 20 °; When the situation is relatively special, you can choose 5-10 degrees.