How does a flip flow screen work
I. Definition
Flip flow screens, also known as Flip-Flop screeners, are a screening equipment suitable for viscous and humid materials, which can provide efficient screening solutions for viscous and difficult to screen materials. Applications include wet recycled materials as well as high moisture and viscous ash, mineral and clay-based materials, or industries such as coal preparation plants, coal chemicals, fertilizer plants, construction aggregates, and non-ferrous metals. The size of the material processed is usually between 0 and 100 mm.
II. Core Components
Elastic screen surface: Directly participates in material screening, generating high-frequency vibration through periodic stretching and relaxation to prevent hole blockage. The elastic screen surface of flip flow screen is made of wear-resistant and fatigue-resistant polyurethane material, with flexibility and elasticity to adapt to large deformation.
Vibration motor: Provides the power required for the flip flow motion of the screen surface, generating periodic vibration through eccentric rotation to ensure alternating stretching and rebound of the screen surface.
Elastic support device: Such as rubber springs or coil springs, used to buffer vibration, reduce the impact transmitted to the frame, and assist the screen surface rebound.
Transmission system: Including motor, belt, and gear transmission device, transmitting power to the vibration motor and controlling the frequency and amplitude of screen surface movement.
Screen box: The screen box is designed as a closed structure, forming a sealed structure to prevent dust dispersion.
Tensioning and adjustment device: Adjust the tension of the screen surface to optimize the flip flow amplitude and adapt to different material characteristics, such as humidity, particle size, etc.
III. Working Principle
The flip flow screen, also known as the crank and link flip flop screen, works as follows:
1. Structure basis:
Flip flow screen is mainly composed of two screen frames, namely screen frame I and screen frame II, screen frame II into the screen frame I, screen frame II is supported on the frame with vibration isolation spring. There is a hanging device between the two, the screen frame I parallel hanging on the screen frame II, the hanging device can also be used as a guide, so that the screen frame I, II can be relatively parallel movement. Each screen frame consists of two side plates connected by crossbeams, and the two ends of the polyurethane screen plate are respectively fixed to the crossbeams of the screen frame I and II.
2. Power transmission:
The motor drives the eccentric shaft through the pulley to rotate, and the eccentric shaft pushes and pulls the screen frame through the connecting rod. Since the quality of the two screen frames is approximately equal, the screen frame II pushes and pulls the screen frame I at the same time, the screen frame I also pushes and pulls the screen frame II.
Screen frame motion: Screen frame I and screen frame II will produce opposite and opposite alternating motion, the relative amplitude is positive or negative 12mm, the absolute amplitude of each screen frame is 6mm. For example, when screen frame II pushes screen frame I, screen frame I moves forward 6mm, screen frame II moves backward 6mm; When the screen frame II pulls the screen frame I, the screen frame I moves back 6mm, and the screen frame II moves forward 6mm.
3. Screen plate action:
The beam mounted on the screen frame drives the flexible screen plate to alternately tighten and relax.
Material screening: the tension and relaxation of the screen plate make the material on the screen surface “spring – fall – spring” cycle process, so as to achieve the screening of the material, so that the material that meets the size of the sieve hole falls through the sieve hole, and the material that does not meet the screen surface continues to be screened, in order to achieve the purpose of separating the different particle size of the material. The flip flow screen usually operates at a frequency of around 500-600r/min.
IV. Features and Advantages
Flip flow screen uses a flexible polyurethane screen mesh and adopts the “flip flow” principle to alternately tighten and relax. It is especially suitable for screening sticky, wet, and other difficult-to-screen materials.
1. Provides solutions for screening difficult materials
The eccentric shaft of the flip flow screen drives the inner and outer screen frames to perform forced movement, generating relative movement between the two screen frames and producing a “trampoline effect” in the screen mesh to achieve efficient screening.
2. High screening efficiency
The screen mesh design and operating principle of the flip flow screen enable it to process more materials in the same area than traditional screening equipment, improving overall production efficiency.
3. High reliability
The speed of the flip flow screen is lower than that of traditional screens (usually below 600 rpm). The lower speed helps reduce vibration and mechanical load generated during equipment operation, thereby extending the service life of the equipment.
4. Low operating cost
Due to the lightweight structure of the flip flow screen, only a small amount of energy is consumed during driving, protecting the environment and reducing operating costs. It can be installed and used on existing technical facilities, thereby reducing investment costs.
V. Summary
Our company’s flip flow screen has excellent quality and professional services. From customer requirements to project operation, we can provide customized full-range services for your project, including project design, equipment manufacturing and procurement, installation and commissioning, and mine operation.
