The flip flow screen is a highly efficient screening equipment that utilizes mechanical drive to achieve high-frequency flip and flop movements of the elastic screen mesh. It is specifically designed to handle moist, sticky, clumping-prone, or high-density materials. Its core advantage lies in the combination of mechanical structure drive and elastic screen mesh technology. The constant flexing action of the elastic screen plate prevents particle adhesion, while the elongation of the screen plate causes a slight change in the screen mesh opening in the tension direction, which can be described as the "breathing" of the screen mesh. Combined with high acceleration forces, this prevents particles close to the screen mesh size from clogging the mesh.

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 processed materials usually ranges from 0 to 100 mm

The mechanical flip flow screen is also known as the crank and connecting rod type flip flow screen.

The screen body is mainly composed of inner and outer screen frames. The inner screen frame is placed on the frame via a rubber shock absorber spring, while the outer screen frame is suspended on the inner screen frame by a leaf spring (glass fiber). Under the drive of external force, the inner and outer screen frames move relatively parallelly.

The movement of the screen frames is driven by the motor to rotate the eccentric shaft. The eccentric shaft, through the thrust rod spring, continuously pushes and pulls the outer screen frame, causing a reverse linear motion between the inner and outer screen frames. Thus, the crossbeam installed on the screen frames can drive the flexible screen plate to perform alternating relaxation and tensioning movements. The materials on the screen surface will undergo a "bounce-up, fall-down, bounce-up" cyclic harmonic motion, thereby completing the grading operation of layer-by-layer screening of the materials.

Flip Flow Screen Structure

The screening machine mainly consists of a combined screening body (screen frame, flexible screen plate, crank transmission device, end transmission, motor, motor support, screening body support, vibration-damping springs, sealing cover, etc.).

The screen frame is connected by enhanced carbon fiber elastic elements provided by a German manufacturer. These elastic elements remain intact even after millions of reciprocating deflections.

The reciprocating distance between the components is determined by the inherent characteristics of the equipment and does not change with the load size of the screening machine. Therefore, the stability of this type of screening machine is an unparalleled advantage compared to other types of flip flow screens

Flip Flow Screen Structure

Box

Transmission Device

Support Guide Spring

Screen Mesh

Thrust Rod Spring

Supporting Rubber Spring

01/ The Solution For Screening Difficult Materials

The eccentric shaft drags the inner and outer screen frames for forced movement,produces relative motion in the two screen frames,andproduces a trampoline effect"in the screen to achieve high efficiency screening.

02/ Low Operating Costs

Due to its lightweight structure,it only requires and consumes low energy to drive It can protect the environment and reduce operating costs.It can be installed and used on existing technical facilities,thereby reducing investment costs.

03/ High Screening Efficiency

The screen design and operating principle of the flip flow screen allow it to handle more material than traditional screening equipment in the same area,improving the overall production efficiency.

04/ Strong Reliability

The speed of the mechanical flip flow screen is lower than that of the traditional screen machine (usually below 600 rpm).The low speed helps to reduce the vibration and mechanical load generated during the operation of the equipment,thus extending the service life of the equipment.

05/ No Blocking Material

Constant deflection means that the screen plate always flexes and recovers in an elastic manner during operation,and this action helps prevent material from adhering to the sieve.

06/ No Impact

The rubber spring supporting the screen machine only bears the weight of the screen machine in the vertical direction of work,and the installation inclination direction bears the inertial force of the screen machine,lead to the equipment having no vertical impact on the foundation,reducing the bearing requirements of the foundation and reducing additional investment.

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Flip Fow Screen Applications

Flip Fow Screen is used in coal, mining operations, aggregate production, metallurgy, transportation, power industry, suitable for dry and wet screening of materials.

Processes:
Dewatering Screening	Fine Removal/Desliming
Dry Classification	Discharge Screening
Wet Screening	Secondary Screening
Fine wet Screening	Tertiary Screening
Material:
Coal	Sand	Anthracite
Coal Coke	Gravel	Ashes
Coal Gangue	Shale	Basalt
Lignite	Slag	Rumble
Gold	Gypsum	Recovered Glass
Copper	Diamond	Mixed Construction
Bauxite	Rare Earth......

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Flip Fow Screen On Site

Applications in the coal chemical industry : It resolves technical challenges in fine screening for industries with ultra-high - capacity, such as the coal chemical industry, where the screening radius is 12mm. In cases where over 90% of the material is retained on the screen in ultra-high-capacity screening, it has been applied at Henan Yima Gasification and Xinjiang Guanghui New Energy, successfully solving screening tasks that vibratory flip flow screens couldn't accomplish.

Applications in the coal industry: It solves the technical challenges of screening fine, moist, and sticky coal particles. With a screening range as small as 3mm, it has been applied at State energy Group's Wanli No.1 Mine and Lijiahao Coal Mine. This equipment is capable of handling sticky and fine coal particles, offering a high screening efficiency and precision that post-screening equipment cannot match.

Other industrial applications: In industries like aggregates and nonferrous metals, especially in the aggregates industry, screening 3 - 5mm moist and sticky materials remains a challenge. The application of mechanical flip flow screens will resolve this industry issue and promote its development.

Manufacturing Capacity

A high quality mechanical products, must have excellent tooling equipment. In order to ensure its accuracy and meet the needs of large orders. Henan Excellent Machinery Co.,Ltd owns 140 sets of professional equipment, including Five-axis Gantry Machining-center, CNC Boring And Milling Machining Center, Vertical Machining Center, Vertical CNC Machining Center, Gantry Machining Center, Laser Cutting Machine, Laser Pipe Cutting Machine, Welding Robot Workstation, Lengthen Lathe, CNC Horizontal Machining Center, etc. Advanced processing and manufacturing equipment including Environmental Spraying Room and Heat Trea equipment and ultra large Surface Heat Treatment.

Five-axis Gantry Machining-center

Vertical CNC Machining Center

Vertical Machining Center

Gantry Machining Center

CNC Boring And Milling Machining Center

Laser Cutting Machine

Laser Pipe Cutting Machine

Welding Robot Workstation

Trolley Resistance Furnace

Shot-blasting Machine

At present, EXCT has fully passed ISO9001-2008 international quality system certification, complete quality system make sure that from the product development and design, production, procurement and supply to sales and service process has been effective quality controlled.

EXCT has a rigorous and skilled inspection team to ensure the success of product quality control. The quality inspection department has a strict testing process that runs through the stages of raw material procurement, production, and installation to ensure that every piece of equipment delivered to customers is qualified.

Mineral Sizers Currency Test When Running

Current Detection

Voltage Detection

Shaft Temperature Detection

Vibration Detection

Noise Detection

Ultrasonic Flaw Detection

Hardness Detection

Coating Thickness Detection

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EXCT Flip Fow Screen are customized for each application material to provide the best configuration and meet all your requirements. For more configurations please contact our technical engineers.

Model	*Screen Spec WL (m)**	Screen Area (㎡)	Meshsize(mm)	Inclination Angle Of Screen Surface (°)	Feed Size (mm)	Power (KW)	Handling Capacity (t/h )
MFF2.0-6.30	2.0X6.3	12.6	3－13	20－30	≤80	22	150－400
2MFF2.0-6.30	2.0X6.3	25.2	Upper screen 14－30 Lower screen 3－13	20－30	≤80	37	350－650
MFF2.2-7.56	2.2X7.56	16.6	3－13	20－30	≤80	37	250－500
2MFF2.2-7.56	2.2×7.56	33.2	Upper screen 14－30 Lower screen 3－13	20－30	≤80	45	450－750
MFF2.2-8.82	2.2×8.82	19.4	3－13	20－30	≤80	37	250－600
2MFF2.2-8.82	2.2×8.82	38.8	Upper screen 14－30 Lower screen 3－13	20－30	≤80	45	500－900
MFF2.6-8.82	2.6X8.82	22.9	3－13	20－30	≤100	37	350－750
2MFF2.6-8.82	2.6×8.82	45.8	Upper screen 14－30 Lower screen 3－13	20－30	≤100	45	650－1100
MFF3.0-8.82	3.0X8.82	26.4	3－13	20－30	≤100	45	400－950
2MFF3.0-8.82	3.0X8.82	52.8	Upper screen 14－30 Lower screen 3－13	20－30	≤100	75	800－1400