When the vibrating screen is working, the two motors rotate synchronously and in reverse, causing the exciter to generate a reverse excitation force, forcing the screen body to drive the screen to move longitudinally, causing the material on it to be periodically thrown forward by the excitation force, thus completing the material screening operation. Suitable for screening sand and stone materials in quarries, it can also be used for product grading in industries such as coal preparation, mineral processing, building materials, power, and chemical engineering.

The working part of the vibrating screen is fixed, and the material is screened by sliding along the working surface. Fixed grid screen is a commonly used type in mineral processing plants, usually used for pre screening before coarse or medium crushing. It has a simple structure and is easy to manufacture. It does not consume power and can directly unload the ore onto the screen surface. The main drawbacks are low productivity and screening efficiency, usually only 50-60%. The working surface of the vibrating screen is composed of horizontally arranged rolling shafts, with plates on the shafts, and fine materials pass through the gaps between the rollers or plates. Large pieces of material are moved towards one end by a roller belt and discharged from the end. Mineral processing plants generally rarely use this type of sieve. The working part of the vibrating screen is cylindrical, and the entire screen rotates around the axis of the cylinder. The axis is generally installed with a small inclination angle. Materials are fed in from one end of the cylinder, fine grade materials pass through the sieve holes on the cylindrical working surface, and coarse materials are discharged from the other end of the cylinder. The rotational speed of the cylindrical screen is very low, the operation is stable, and the power balance is good. However, its sieve holes are prone to clogging, screening efficiency is low, working area is small, and productivity is low. Mineral processing plants rarely use it as screening equipment. The vibrating screen body oscillates or vibrates in a plane. According to its planar motion trajectory, it can be further divided into linear motion, circular motion, elliptical motion, and complex motion. Shaker screens and vibrating screens belong to this category. The shaking screen is driven by a crank connecting rod mechanism. The electric motor drives the eccentric shaft to rotate through a belt and pulley, and uses a connecting rod to make the body move back and forth in a certain direction. The movement direction of the machine body is perpendicular to the centerline of the support or suspension rod. Due to the swinging motion of the machine body, the material on the screen surface moves towards the discharge end at a certain speed, and the material is screened simultaneously.

Compared with the above-mentioned sieves, the shaking sieve has higher productivity and screening efficiency. Its disadvantage is poor power balance. Nowadays, it is rarely used in mineral processing plants and has been replaced by more reasonable vibrating screens.