Vibration Screener Machine

Vibrating screens are mainly classified into three types based on their motion trajectory and structural form: linear vibrating screens, circular vibrating screens, and circular screens. Linear vibrating screens move in a straight line, while circular vibrating screens move in a circle. Different types of vibrating screens differ in structural characteristics, applicable materials, and application scenarios. Scientific selection is key to ensuring long-term stable operation and achieving optimal screening results.

Linear vibrating screens use vibrating motors as the vibration source, employing a dual-motor drive. When the two motors rotate synchronously and in opposite directions, the excitation forces generated by the eccentric blocks of the motors cancel each other out in the direction parallel to the motor axis and overlap into a resultant force in the direction perpendicular to the motor axis. Therefore, the vibrating screen's running trajectory is a straight line. The two motor shafts have an angle relative to the screen surface. Under the combined force of the excitation force and the material's own weight, the material is thrown up and jumps forward in a straight line on the screen surface.

Circular vibrating screens move in a circular trajectory and are a multi-layered, high-efficiency new type of vibrating screen. Circular vibrating screens use a cylindrical eccentric shaft vibrator and eccentric blocks to adjust the amplitude. The material moves in a circular motion on the screen surface, which is suitable for classifying medium and fine-grained materials.

Equipment Structure

(I) Structure of a Linear Vibrating Screen: Mainly composed of a screen box, screen frame, screen mesh, vibrating motor, motor base, damping springs, and support frame. The screen mesh is available in various materials such as low-carbon steel, brass, and stainless steel. The excitation force generated by the eccentric block ensures the screen's movement trajectory is a straight line.

(II) Structure of a Circular Vibrating Screen: Mainly composed of a screen box, screen mesh, vibrator, damping spring device, and base frame. It uses a cylindrical eccentric shaft vibrator and eccentric blocks to adjust the amplitude.

(III) Structure of a Fertilizer Screen: The HFS series fertilizer screen consists of three parts: a screen box, vibrator, and support device. The screen surface is mounted on the screen frame and uses a dual-shaft inertial vibrator driven by two separate motors.

Application range of equipment

Linear vibrating screen: Primarily suitable for screening fine particulate materials in industries such as fertilizers, abrasives, chemicals, pharmaceuticals, building materials, grains, and carbon. Particularly suitable for grading organic fertilizers.

Circular vibrating screen: Primarily suitable for grading medium to fine-grained materials; it is the most widely used traditional type of vibrating screen in my country. Suitable for screening sand and gravel in quarries, and can also be used for material screening in mining, building materials, and other industries.

Fertilizer screen: Specifically designed for the fertilizer industry, suitable for grading and screening compound fertilizers, finished organic fertilizers, and recycled materials.

Types of available raw materials

Linear vibrating screens are suitable for materials such as organic fertilizer granules, compound fertilizer granules, powdered materials, grains, feed, and chemical powders.

Circular vibrating screens are suitable for materials such as ores, sand, coal, and medium to fine-grained materials.

Fertilizer screens are suitable for materials such as compound fertilizer granules, organic fertilizer granules, and fertilizer raw materials.

Working principle of the equipment

Linear Vibrating Screen: When two vibrating motors rotate synchronously and in opposite directions, the excitation forces cancel each other out in the direction parallel to the motor axes and overlap into a resultant force in the direction perpendicular to the motor axes, resulting in a straight line trajectory for the screen. The two motor shafts are at an angle relative to the screen surface, causing the material to be thrown up and jump forward in a straight line on the screen surface. Various sizes of oversize and undersize materials are separated through different layers of screens.

Circular Vibrating Screen: The motor drives the vibrator main shaft to rotate via a V-belt. The centrifugal inertial force of the unbalanced mass on the vibrator causes the screen box to vibrate. Different amplitudes can be obtained by changing the eccentric weight of the vibrator.

Application of equipment in production line

The vibrating screen is located after the cooler and before the packaging machine in the fertilizer production line. It forms a closed-loop return material circulation system with the granulator.

The target audience for the equipment

The main users of vibrating screens include: equipment procurement and selection personnel in fertilizer production enterprises; production line process designers; and equipment management personnel.