Fibernet Screen

 

In the paper industry, "Fibernet Screen" is a significant and specialized equipment that focuses on the detailed and efficient processing of tailings generated during the papermaking process. Its core function is to conduct in-depth analysis and separation of the tailings through a series of precise screening operations. Specifically, it can accurately separate the fiber components that still have potential utilization value from the seemingly waste tailings and effectively remove various residual impurities, such as fine sand grains, incompletely decomposed fiber masses, plastic fragments, etc. This not only realizes the maximum recycling and utilization of limited resources, reduces the consumption of raw materials, but also significantly reduces the discharge of waste, providing strong support for papermaking enterprises in sustainable development and environmental protection.

 

 

Used for treating tailing pulp in screening system and recycling the fiber from tail pulp.

 

 

• The screen basket is divided into two sections, can using different specification slot according to the different technical demand.
• There is a dilution water ring between the two screen baskets, purify the stock further by adding dilution water.
• The dilution water can avoid the phenomenon of increasing consistency of stock, increasing the screen efficiency.
• Enclosed drum-style rotor,which eliminates stringing issues associated with screening stock having high debris levels.

 

 

1.Screen Mesh Filtration

The tailings screen is internally equipped with carefully designed screen meshes with specific pore sizes and materials. The pore sizes of these screen meshes are precisely calculated and selected to ensure the accurate separation of materials of different sizes and properties. When the tailings are transported onto the screen mesh under the drive of pressure or gravity, the fine fibers that meet the specific size requirements can smoothly pass through the pores of the screen mesh, while the larger-sized impurities and useless materials are effectively intercepted on the surface of the screen mesh.

The materials of the screen mesh usually have high strength, wear resistance, and corrosion resistance to ensure stable performance and precise screening accuracy during long-term screening. Meanwhile, the structural design of the screen mesh is also optimized to prevent fiber entanglement and clogging during the screening process.

 

2.Vibration Assistance

To improve the screening efficiency and ensure the continuity of the screening process, the tailings screen is usually equipped with an advanced vibration device. This device can generate high-frequency and moderate vibrations, enabling the tailings to be rapidly and evenly distributed on the screen mesh, avoiding material accumulation and local clogging. The role of vibration not only helps to increase the screening speed but also enables better separation of fibers from impurities, further enhancing the screening effect.

The frequency and amplitude of the vibration can be flexibly adjusted according to the characteristics of the tailings and the screening requirements to achieve the best screening performance. In addition, the design of the vibration device also fully considers reducing the vibration transmission and noise generation of the equipment, ensuring that the production efficiency is improved without affecting the normal operation of the working environment and surrounding equipment.

 

3.Airflow Function

Some advanced tailings screens also introduce the mechanism of airflow-assisted screening. Through the reasonable arrangement of airflow channels and adjustment devices inside the equipment, the speed and direction of the airflow can be precisely controlled. The introduction of the airflow can produce a slight suspension and blowing effect during the tailings screening process, helping the fine fibers to better pass through the screen mesh, and at the same time, effectively blow away some lightweight impurities from the screening area, further optimizing the separation effect.

The action of the airflow cooperates with the screen mesh filtration and vibration assistance, forming a more efficient and precise screening system, enabling the tailings screen to adapt to the processing requirements of different types and complexities of tailings.

 

 

receive a large amount of tailings from the previous process. Its shape and size are optimized to reduce the resistance and material splashing during the feeding process. There may also be a preliminary material homogenizing device at the feed inlet, such as a deflector or a disperser, used to evenly distribute the incoming tailings onto the screen mesh to ensure uniform material processing at the initial stage of the screening process.

 

2.Screen Box：The screen box is the main structure of the tailings screen, providing a stable frame and space for the installation of the screen mesh and the screening operation. It is usually made of high-strength metal materials with good rigidity and seismic performance to withstand the vibration and pressure during the screening process. The internal shape and size of the screen box match the size and screening requirements of the screen mesh to ensure that the tailings can fully contact the screen mesh within the box and complete the screening.

 

3.Screen Mesh：As the core component of the tailings screen, the quality and performance of the screen mesh directly determine the screening effect and accuracy. The screen mesh is usually woven from stainless steel wire, synthetic fibers, or other high-performance materials, with different pore sizes and weaving methods to adapt to different screening requirements. The installation method of the screen mesh is usually a detachable structure, facilitating quick replacement and maintenance when the screen mesh is worn or damaged.

 

4.Vibration Device：The vibration device generally consists of a motor, an eccentric wheel, a transmission shaft, and damping components. The motor drives the eccentric wheel to rotate through the transmission shaft, generating periodic excitation forces, thereby causing the entire screen box to vibrate. The damping components are used to reduce the transmission of vibration to the equipment foundation and the surrounding environment while ensuring that the vibration energy can effectively act on the tailings on the screen mesh.

 

5.Outlet：The tailings screen usually has two outlets for discharging the screened useful fibers and impurities respectively. The fiber outlet is usually connected to subsequent fiber recovery processing equipment or pipelines to convey the recovered fibers to the next process for reuse. The impurity outlet is used to discharge the separated impurities, which may be sent to a dedicated treatment facility for further processing or disposal.

 

6.Support and Damping Structure：To ensure the stability and safety of the tailings screen during operation, the equipment is usually equipped with a sturdy support structure and an efficient damping device. The support structure generally consists of steel beams, columns, and a base, which can withstand the weight of the equipment and various forces generated during operation. The damping device usually adopts springs, rubber pads, or hydraulic shock absorbers, installed between the equipment and the support structure to effectively absorb and buffer the vibration energy, reducing the vibration impact on the ground and surrounding equipment.

 

7.Control System：The tailings screen is equipped with an advanced control system for monitoring and adjusting the operating parameters of the equipment, such as vibration frequency, amplitude, feed speed, airflow speed, etc. The control system usually consists of sensors, controllers, and an operation interface, which can collect data on the operating status of the equipment in real-time and automatically adjust and optimize according to the preset process parameters to ensure that the equipment always operates in the best state.

 

8.Protective Devices：To ensure the safety of operators and the normal operation of the equipment, the tailings screen is also equipped with various protective devices, such as guardrails, safety covers, emergency stop buttons, etc. These devices can effectively prevent personnel from accidentally touching the moving parts of the equipment, avoid safety accidents, and be able to stop the equipment in time when abnormal conditions occur, protecting the safety of the equipment and personnel.

 

 

1.Efficient Screening

With advanced screening technology and optimized structural design, it can handle a large amount of tailings in a short time, achieving efficient fiber recovery and impurity removal.

It has wide adaptability to different types and properties of tailings and can maintain stable screening performance under various complex working conditions.

 

2.High-Precision Separation

It can accurately separate the fine fibers and impurities in the tailings, ensuring that the quality of the recovered fibers meets the requirements for subsequent reuse and minimizing the contamination of the recovered fibers by impurities.

Screen meshes of different precisions can be customized according to the user's needs to meet the requirements of different production processes and product qualities.

 

3.Stable and Reliable

Adopting high-quality materials and advanced manufacturing processes, the key components have good wear resistance and corrosion resistance and can operate stably for a long time in harsh working environments.

Equipped with a complete monitoring and protection system, it can monitor the operating status of the equipment in real-time and alarm and stop in time when a fault or abnormal situation occurs, ensuring the safe and reliable operation of the equipment.

 

4.Energy Saving and Low Noise

The optimized design and efficient drive system can effectively reduce the energy consumption of the equipment and save production costs.

Reasonable shock absorption and noise reduction measures make the vibration and noise generated by the equipment during operation smaller, meeting the requirements of environmental protection and occupational health.

 

5.Easy Maintenance

The structural design is simple and reasonable, and each component is easy to disassemble and install, facilitating daily inspection, cleaning, and maintenance work.

The screen mesh replacement is convenient and quick, reducing the equipment downtime and improving production efficiency.

 

 

1.Operation Key Points

Before starting the machine, the operator should carefully check whether each component of the equipment is normal, including whether the screen mesh is intact, whether the vibration device is flexible, whether the feed inlet and the discharge outlet are unobstructed, etc.

Set the operating parameters of the equipment reasonably according to the characteristics of the tailings and the production requirements, such as vibration frequency, amplitude, feed speed, etc., and closely monitor the operating status and screening effect of the equipment during the operation, and adjust it in time.

Strictly follow the operating procedures for feeding and discharging operations, avoid material accumulation and clogging, and ensure the continuity and stability of production.

 

2.Maintenance Work

Regularly clean the equipment to remove the residual materials and impurities on the screen mesh and maintain the permeability of the screen mesh and the screening effect.

Check the lubrication condition of the vibration device, add or replace the lubricating oil in time to ensure the normal operation of the vibration device.

Regularly check the wear condition of the screen mesh and replace the severely worn screen mesh in time to ensure the screening accuracy.

Regularly inspect and maintain the electrical system of the equipment to ensure the normal operation of the electrical components and the good connection of the lines.

Establish the maintenance file of the equipment, record the maintenance history and operation of the equipment, and provide a reference basis for the management and maintenance of the equipment.

 

 

1.Resource Recovery

Effectively recover valuable fibers from the tailings, improve the utilization rate of raw materials, and reduce the production cost of papermaking enterprises.

Reduce the demand for new fiber raw materials, contribute to saving forest resources, and promote sustainable development.

 

2.Environmental Protection and Emission Reduction

Reduce the discharge of tailings, reduce environmental pollution, and comply with increasingly strict environmental protection regulations and requirements.

Through the recycling and utilization of resources, reduce the treatment cost and environmental pressure of waste.

 

3.Improve Product Quality

The recovered fibers can be used for the production of paper products with lower quality requirements after reprocessing, improving the diversity and market competitiveness of products.

Reduce the influence of impurities on the paper quality and help improve the overall quality and stability of the paper.

 

4.Process Optimization

The application of the tailings screen can optimize the entire papermaking process, improve production efficiency and stability, and reduce faults and downtime during the production process.

Provide important support and guarantee for papermaking enterprises to achieve intelligent and automated production.

 

 

Type	HLW3	HLW5	HLW100	HLW200
Screen area：㎡	0.3	0.6	1	1.5
Treating Consistency：%	0.8～1.5
Width of screen slot：mm	0.2,0.25,0.30
Pressure of inflow pulp：MPa	0.15～0.25
Dilution flow rate：L/min	50～110	120～200	220～300	300～400
Flow rate：t/d	10～25	25～40	45～65	65～85
Power of motor：kw	37	55	75	110
(L×W×H)：mm	1450×725×800	1750×850×980	2250×1900×1600	2400×1900×1800

 

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