Circular Swing Screen

The circular swing screen simulates the principle of manual operation, and at the same time has plane circular motion and upward parabolic motion. Materials move in an involute spiral on the screen surface, and make precise contact with the screen mesh. It can classify up to 6 particle sizes at the same time, achieving a separation accuracy of 99%.The output of the circular swing screen is 3-5 times that of ordinary screening machines, and the service life of its screen mesh is 5-10 times that of conventional screening equipment. It is suitable for screening fine and ultra-fine powder and granular materials, especially for hard-to-handle and high-yield materials.

The circular swing screen is suitable for spherical, cylindrical, flaky and even irregularly shaped materials that are easy to block the screen and require precise screening. It is applicable for materials with a feed particle size ranging from 1 micron to 20 mm, especially for difficult-to-screen products such as fine, brittle and light materials. It is widely used in industries such as food, medicine, chemical engineering, high-performance materials (plastics) and minerals.This equipment can handle a screening capacity ranging from 10 kg/h to 50 tons/h, depending on the product, mesh size and feed flow rate.

Working Principle:

The basic rotational motion of the YBS circular swing screen is similar to manual screening. After the power is turned on, the screen body starts, and the screen box makes an approximate circular motion driven by the vibration device. At this time, the screen box drives the entire screen surface to make a periodic motion, and the materials on the screen surface make directional jumping movements on the screen mesh along with the screen box. During this process, materials smaller than the screen mesh aperture fall to the lower layer of the screen mesh and are discharged from the lower discharge port; materials larger than the screen mesh aperture are discharged from the upper discharge port; and materials of the middle layer are discharged from the middle discharge port, thus completing the entire screening work. The screening effect can be improved by adjusting the radial angle and tangential angle of the circular swing screen.

Screening Methods:

Rotary Reverse Screening: Raw materials are screened in the order of fine → medium-fine → medium → coarse, and the coarse materials play a certain role in cleaning the screen mesh holes.

Double-capacity Screening: The materials entering the screening machine are evenly distributed to two layers, which nearly doubles the processing capacity of each screening machine, making one machine work as two.

Combined Screening: Combined with ordinary screening and rotary screening, it improves the utilization rate of a single screening machine.

Rotary Screening: Two layers of screen mesh with the same aperture are used to screen the materials that have been screened once again, so as to achieve higher screening accuracy.

Structure of Circular Swing Screen:

The circular swing screen is mainly composed of a feed inlet, an upper cover, an observation hole, a screen frame, a sealing ring, a discharge outlet, a screen frame assembly, a binding ring, a main pivot assembly, an adjustment block, a spring, a main shaft assembly, a pulley, a base, an inspection hole, a motor and other parts.

• The direct-connected vibration device is different from that of ordinary vibrating screens. This device is connected to the motor and transmission device through a belt. Through the reverse movement of the motor, the screening is gentle and will not damage the shape and characteristics of the materials.
• The design of the screen mesh extends the screening diameter and prolongs the residence time of materials on the screen surface, thus improving the screening efficiency and accuracy. Compared with ordinary vibrating screens, the screening efficiency is increased by 1-5 times, and the accuracy is increased by 90%-99%.
• The screen frame adopts an integrally formed punching design, and a screen supporting plate is designed in the middle to ensure uniform force on the screen mesh, so as to achieve the purpose of improving the service life of the screen mesh.
• There are three types of screen cleaning devices: bouncing ball screen cleaning device, rotating brush screen cleaning device and ultrasonic screen cleaning device, which can ensure that the screen holes are not blocked. Users can choose according to their own needs.
• The vibration motor is installed on the outside of the screening machine, which is more convenient for later maintenance and overhaul.
• It works at low frequency (rotating speed between 180-280 rpm). Compared with traditional screening machines, its service life is increased by more than 10 times, which reduces maintenance costs and saves maintenance time.
• The pyramid-shaped base and chassis are the basic parts of the screening machine, and the middle screen layers can be increased or decreased as needed.

Screen Cleaning Methods of Circular Swing Screen: 

Bouncing Ball Screen Cleaning Device: It is circular in shape, and its material can be divided into two types: rubber and silica gel. Its working principle is that it is evenly distributed on the ball supporting plate, usually 5-8 pieces within 10 centimeters. When the screening machine is performing vibration screening, the bouncing balls also jump and hit the screen mesh, so as to achieve the purpose of cleaning the screen.

Rotating Brush Screen Cleaning Device: It is composed of two groups of cylindrical silica gel (the number is related to the diameter of the screen frame). The rotating brush is installed at the center of the screen frame and connected with a coupling. When the screening machine is started, the rotating brush starts at the same time, so as to clean the bottom of the screen frame.

Ultrasonic Screen Cleaning Device: This device uses an ultrasonic system to clean the screen mesh. Its main components include an ultrasonic power supply, a transducer and an ultrasonic screen frame assembly. Its principle is that the ultrasonic power supply converts conventional electricity into 18KHZ high-frequency electric energy, which acts on the screen frame assembly through the transducer, thus solving the problem of screen cleaning and screening of high-fine materials.

Application of Circular Swing Screen:

Materials applicable to the circular swing screen: quartz sand, flour, coating, silica sand, mullite sand, etc.

The circular swing screen is suitable for spherical, cylindrical, flaky and even irregularly shaped materials that are easy to block the screen and require precise screening. It is applicable for materials with a feed particle size ranging from 1 micron to 20 mm, especially for difficult-to-screen products such as fine, brittle and light materials. It is widely used in industries such as food, medicine, chemical engineering, high-performance materials (plastics) and minerals. This equipment can handle a screening capacity ranging from 10 kg/h to 50 tons/h, depending on the product, mesh size and feed flow rate.