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The Coal Roller Screen is an innovative screening solution combining separation and conveying functions in one system. It consists of multiple shafts fitted with wear-resistant discs rotating synchronously, creating a dynamic screening surface that ensures smooth operation, consistent material flow, and accurate size separation.
Commonly called a Wobble Feeder or Disc Screen, the Coal Roller Screen is particularly effective in processing difficult materials such as wet coal, sticky ores, or abrasive aggregates. Unlike vibrating screens, its open design prevents clogging and allows continuous, efficient operation even under harsh conditions, maintaining high processing capacity and screening accuracy.
Our roller screens are widely utilized in coal preparation, mining, cement plants, metallurgy, and the chemical sector. With their rugged design, long-lasting components, and low maintenance requirements, they offer significant improvements in plant productivity, reliability, and cost-effectiveness.
How Coal Roller Screen Work?
The screening area consists of many parallel arranged roller shafts, the screen shaft is equipped with a number of staggered screen discs, the roller shafts rotate in the same direction, to realize the feeding and screen of materials.
The Screen surface of Coal Roller Screen is composed of several parallel arranged screen shafts equipped with shaped screen discs, and the screen shafts are driven by the Driving device to rotate in the same direction at the same speed, forming a rolling screen surface.
When the material flows on the screen surface, it can form a material flow of equal thickness and with a certain acceleration.
The gap between the screen shaft and the screen disc forms the screen hole, the material less than the screen hole is subjected to its own gravity and the rotating force of the screen shaft, and becomes the material under the screen through the screen holes. Material larger than the screen holes continues to enter along the screen surface under the action of the rotating screen disc, becoming the material on the screen, and finally achieving the classification of the material.
Coal Roller Screen Core Components
Our company has skilled technical workers and perfect quality management system, to ensure the high quality of the core components of the roller screen, to provide a guarantee for the high-performance operation of the product.
Screen Shaft Assembly
The screen shaft assembly is composed of motor + reducer, screen shaft, screen disc, flat key, locking nut, coupling, bearing seat and bearing seat accessories. The drive motor is connected with the reducer and screen shaft through the coupling.
The design of the screen shaft is reasonable and safe, which can effectively avoid the phenomenon of bending and breaking of the roller shaft.
When any group of screen shafts fails, the material can continue to move forward under the push of previous screen shaft, and the screening can operate as usual. The screen shaft bearing seat is installed on the outside of the screen box side plate for easy disassembly.
Screen Disc
The Screen disc is made by casting a wear-resistant manganese-chromium alloy steel as a whole, which has excellent wear resistance and can withstand the impact and wear of large pieces of materials without any deformation or fracture.
The Screen disc is designed as a parabolic sieve plate shape and is rounded to eliminate sharp corners, minimizing the rotational resistance of the sieve plate.
The parabolic Screen disc can maximize the disturbance ability of the roller Screen disc on the material flow and improve the screening rate.
Coal Roller Screen Details
Drive Device
It adopts single-axis single-motor drive or multi-axis chain combination transmission mode, reasonable power configuration and screen surface structure to evenly distribute the material load in the screen and ensure smooth operation.
The design structure of the driving device is simple, easy to install and disassemble, and the connected screen shaft is not moved when disassembling.
The driving device is compact in size, light in weight, long in life and low in maintenance cost.
Screen Disc
Coal Roller Screen disc with staggered layout, more reasonable design. Coal Roller Screen disc has good impact resistance and will not appear any deformation and fracture phenomenon.
Coal Roller Screen disc has good wear resistance and long service life. The parabolic shape screen disc has reasonable design and high assembly accuracy, which can improve the screening accuracy.
Screen Box
The main body of the Coal Roller Screen is welded with low-alloy high-strength structural steel. All screen shaft assemblies are fixed to the machine body through connecting bolts. Wear-resistant lining plates are installed on the side of the machine body to avoid direct contact between materials and the box, greatly extending the service life of the equipment. And the wear-resistant lining plate and the screen box are connected by bolts, which is easy to replace.
Protective Housing
The protective housing of the Coal Roller Screen is welded with NM500 wear-resistant alloy steel plate, sprayed with anti-rust and anti-corrosion paint, and connected with the hopper and the outlet housing at the front and back.
The overall sealing of the screen box can effectively prevent dust pollution, reduce the impact on the environment, and meet the requirements of green construction.
The protective housing is provided with an observation window to facilitate the observation of the operation of the machine.
Wear-Resistant Lining Plate
The wear-resistant lining plate is made of alloy material, and the whole production process adopts welding, heat treatment, machining and other assembly line production, which has a long service life and strong wear resistance, toughness and impact resistance.
The inside of the screen box and the contact surface between the guide groove and the material are provided with wear-resistant lining plates, which can protect the screen box and increase the life of the guide groove. The lining plate is fixed together with the mother plate by bolts, and the replacement is convenient.
Self-cleaning Device
The self-cleaning device of the screen shaft is made of wear-resistant steel and is equipped with a cutting edge, which is inclined to the lower part of the screen shaft. Some fibrous debris and sticky materials attached to the screen will be automatically cleaned off by the cleaning device to solve the blockage of the screen surface.
Coal Roller Screen Features
01/ Pre-crushing Screening
Before the raw materials enter the primary crushing equipment such as jaw crushers and hammer crushers, this Coal Roller Screen can efficiently pre-screen out the powdered materials within. This measure can effectively prevent the blockage of the crushing chamber, significantly enhance the processing capacity and efficiency of the main crushing equipment, and directly reduce the additional energy consumption caused by processing fine materials. It achieves energy conservation and efficiency improvement from the process level.
02/ High-precision Screening
For materials with high moisture content, high viscosity, or complex compositions that are difficult to handle by traditional vibrating screens, our roller screen, with its unique rotational screening principle and forced conveying capability, achieves outstanding screening accuracy. The screen disc has a self-cleaning effect during rotation, which can effectively break down sticky clumps and ensure more thorough material separation. The screening efficiency is much higher than that of conventional equipment.
03/ Flexible Layout
To meet the production line planning and space constraints of different customers, this equipment offers high configuration flexibility. It supports various installation methods such as horizontal and inclined, and can adjust the overall inclination angle. It can easily integrate into compact site layouts or complex existing production processes, providing you with customized solutions.
04/ User-friendly Operation
We are committed to making the operation simple. The control system is designed intuitively and is easy to master. At the same time, the equipment offers two operation modes: manual and fully automatic. It can be flexibly switched according to your production fluctuations and the upgrading needs of the intelligent factory, providing a solid foundation for achieving unmanned值守 and centralized control.
05/ Enclosed Design
The equipment adopts an all-enclosed structure, which can effectively suppress dust dispersion during operation and significantly reduce mechanical operating noise. This not only creates a cleaner, quieter and safer working environment for the staff, but also helps enterprises easily meet increasingly strict environmental protection and industrial safety standards.
06/ Low Operating Costs
Thanks to the robust and durable structure of the machine, minimal maintenance requirements, and excellent energy-saving performance of the product itself, our Coal Roller Screen offers you significant cost advantages throughout the entire lifecycle. Less downtime, lower spare parts consumption and energy expenses, all combined to result in long-term considerable investment returns and overall improvement in profitability.
Submit your requirements and talk with one of our technical engineer about your project.
Coal Roller Screen Brochure Download
Why Choose Coal Roller Screen?
Coal Roller Screen VS conventional screens, have the following advantages.
Roller screens distinctly outclass conventional screens, especially in the case of difficult to screen, wet, sticky bulk materials, feeding and screening is distinctly outclass to conventional screens, which often exhibit baking and sticking with these materials.
Coal Roller Screen operate with low energy consumption and low profile requirements, and without vibration, noise or transmitted stresses, making them ideal for both stationary and portable applications.
Compared with the traditional screen that uses vibration to separate materials, the Coal Roller Screen does not vibrate, the equipment is relatively strong, does not require frequent maintenance and overhaul, and the overall life of the equipment is longer.
Coal Roller Screen are self-cleaning and designed to resist clogging and reduce blinding. They also feature an automatic lubrication system and a jog reverse function to quickly and easily solve any jamming situation.
Coal Roller Screen can be fed by an apron feeder or directly via trucks or loaders. No other equipment is required to assist the feeding, reducing the cost of civil construction and equipment.
Manufacturing Facilities
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.
Strict Quality Control
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.
Coal Roller Screen Cases
Coal Roller Screen are especially suitable for wet, sticky materials, and stripping out materials with high percentages of clay. Coal Roller Screen are used in aggregate and mining applications to sort the run-of-mine material before the primary crusher.
Submit your requirements and talk with one of our technical engineer about your project.
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General Technical Specifications
EXCT Coal Roller Screen are customized for each application material to provide the best configuration and meet all your requirements. Configuration information is typical values for reference. Please contact our technical engineers for more assistance with equipment selection.
| Model | Screen Width (Mm) | Controlled Axis/Base | Graded Particle Size (Mm) | Drive Power (Kw) | Handling Capacity(T/H) |
| GZS1208 | 1200 | 8 | 10-100 | 15 | 150-300 |
| GZS1412 | 1 400 | 12 | 10-100 | 2x 15 | 200-500 |
| GZS1618 | 1600 | 18 | 10-100 | 3x 18.5 | 400-800 |
| GZS1824 | 1 800 | 24 | 10-100 | 4×22 | 600- 1000 |
| GZS2024 | 2000 | 24 | 10-100 | 4×30 | 800-1200 |
| GZS2430 | 2400 | 30 | 10-100 | 5×37 | 1000-1800 |
Note: The number of rolls can be customized according to customer requirements.
Selection Instruction
1.Which material to be screened: ____________
2.Handling capacity: __________ (t/h)
3.Material density:___________(t/m3)
4.Max. granule size of the feeding material: ______mm
5.What is the percentage of the maximum material in the total feed materials? _________%
6.What is the size of the screen hole of the roller screen?__________(mm)
7.Are there any requirements for the arrangement of the roller screen? Is it horizontal or inclined?
8.Which kind of equipment will feed the material into roller screen?
9.Which kind of equipment will receive the material from roller screen?
10.Does the Coal Roller Screen work alone or with other equipment to form a system? If forming a system, please provide the flow chart or layout drawing of the whole system for our engineers to reference.
Coal Roller Screen Spare Parts
Duplex Roller Chain
Screen Shaft Assembly
Bearing
Coal Roller Screen Service
Project Feasibility Report
Site Design and Planning
Model Selection and Proposal
Model Selection Calculation
3D Modeling and Drawings
Civil Design
Installation and Commissioning
Remote Diagnosis
Training Service
Maintenance Schedule
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