Working principle and structural characteristics of circular vibrating screen

 Vibrating screen, rotary vibrating screen and circular vibrating screen and circular vibrating screen, circular vibrating screen refers to the inertia vibrating screen of which the vibrating body of the screen machine, that is, the screen box, has an approximate circular motion trajectory. This vibrating screen is also called a uniaxial vibrating screen. Circular vibrating screen is a type of screening equipment with a wide range of models and specifications and a wide range of applications. The screen surfaces of various circular vibrating screens usually have single-layer and double-layer structures, which are widely used in coal, mining, electric power, Dry and wet classification of various granular and small block loose solid materials in building materials, light industry and chemical industries. From the perspective of the structure type of the screen exciter, the circular vibrating screen has two types: YA series with shaft eccentricity and YK series with block eccentricity. YA series shaft eccentric circular vibrating screen has high screening efficiency, scientific and reasonable structure , The whole machine has the characteristics of high strength and rigidity, stable operation, low noise and convenient maintenance. 2. Circular vibrating screen structure: All kinds of circular vibrating screens, whether it is seat type installation or hanging type installation, are generally composed of the following parts: vibrating body - screen box. Vibration isolation - supporting spring group (seat type installation) or spring Boom (hanging type installation) power device—single-axis exciter drive device—asynchronous motor related accessories Vibration force is an inertial force whose direction changes with positive regularity around a fixed axis. Its essence is a centrifugal force formed by the rotation of an eccentric mass around a fixed axis.

The working principle of the circular vibrating screen is that after the screen machine is started, the vibrator of the screen machine drives the vibrating screen box to make a directional jumping motion together. The material with the surface aperture is discharged from the discharge port after continuous jumping motion. Finally complete the screening work. According to the structural characteristics and working principle of the circular vibrating screen, the screen surface is generally inclined (the inclination angle is 15-25 degrees). From the structure and working principle of the circular vibrating screen, it can be seen that the rotation direction of the exciter relative to the direction of the material flow has two situations: rotation in the direction of the material flow and rotation in the direction of the countercurrent. Obviously, when the exciter rotates in the direction of the flow, the running speed of the material increases, which can increase the production capacity, but the screening efficiency decreases; when the exciter rotates in the countercurrent direction, the running speed of the material decreases, the production capacity decreases, but the screening efficiency decreases. to raise efficiency. In view of this, in the actual screening operation, we can take a straight line in terms of production capacity and screening efficiency according to specific questions and needs.

There are several categories such as elliptical vibrating screens that have evolved from linear vibrating screens. The vibrating screen generally consists of a vibrator, a box, a vibration isolation device and a transmission device. All kinds of vibrating screens have a rectangular screen surface. The screen surface is installed in the screen box in a certain way. The screen box and the screen surface perform a reciprocating motion with a specific trajectory under the action of the vibrator. The continuous vibration of the screen surface makes the screen surface The material layer is continuously thrown up, loosened and separated, and finally achieves the purpose of grading or disintermediation. There are many kinds of moving screens and different uses. From the perspective of Xiaotong, there are many classification methods for vibrating screens. Among them, they are divided according to the motion trajectory of the vibrating body of the screen machine, that is, the screen box.