Our Company Uses New Technology To Solve The Shortcomings And Defects In Roller Screen
Coal is a conventional primary energy with abundant reserves, which is the most economical, reliable and basic guarantee for energy security and energy strategy. At present, coal is still an important energy source in all walks of life. “promote the revolution of energy production and consumption, and build a clean, low-carbon, safe and efficient energy system”, which points out the direction for the green development and clean utilization of the coal industry.
At present, all over the world, especially in several countries and regions with large coal reserves, including indonesia, russia, australia, india, germany and other places, along with coal mining, there are also some shortcomings in the field of coal screening. Our company has improved and developed a series of patented technologies according to the difficulties and pain points in coal processing. Our special roller screen is launched, which effectively solves the technical problems of coal recovery from the well.
Through continuous research and development and experiments, we effectively solve the shortcomings and defects of roller screen
(1) this paper proposes the compression-shear critical crushing analysis method of stuck materials in the state of roller screen mesh occlusion, obtains the force characteristics of roller and screen when roller screen is stuck, and solves the parameter setting problem of overload control system.
(2) based on the self-recovery overload protection loop, the automatic control technology to solve the problem of stuck materials is developed, and the roller screen overload automatic reaction, foreign body automatic adjustment and automatic recovery are realized.
(3) the multi-stage variable speed flat screen equal thickness roller screen technology is developed, and the anti-wear resistance cam screen differential tooth arrangement scheme is designed.
(4) developed gzs series large and efficient roller screen, processing capacity of 300-3800th, has been successfully applied at home and abroad, has achieved good economic and social benefits.
Our roller screen
The main roller screen body is welded with q355d low-alloy high-strength structural steel. All screen shaft assemblies are fixed to the roller screen by connecting bolts. The wear-resistant lining board is installed on the side of the roller screen, and the thickness of the wear-resistant lining board is not less than 25mm. Avoid direct contact between the material and the box, greatly improving the service life of the equipment; and the wear-resistant liner and the box are connected by bolts, easy to replace.
The screen shaft assembly is composed of a drive unit motor + reducer, screen shaft, roller blade disc, flat key, locking nut, coupling, bearing seat and bearing seat accessories, and the drive motor is connected with the reducer and the screen shaft through the coupling.
Sieve shaft selected forgings 42crmo, using cae force analysis, reasonable design, safety, effectively avoid tooth roll bending, fracture and other phenomena. The screen shaft seal is sealed with a special rubber bowl to ensure that dust does not spill.
Roller screen when any group of screens fails, the stone can be pushed by the previous screen across the fault screen and continue to move forward, and the screening can operate as usual. Roller screen roller screen is cast with wear-resistant manganese chromium alloy steel, which can handle the impact and wear of < 800mm materials without any deformation or fracture. Screen surface hardness hrc55, with good wear resistance, screen shaft service life is not less than 30,000 hours, screen life is not less than 12,000 hours.
The screen shaft bearing seat is installed on the outside of the screen side plate for easy disassembly. The bearing used in the whole machine should have a forced bearing lubrication system, and the lubrication system should be centralized and automatic lubrication by grease pump to achieve automatic (or manual) fixed time and quantitative centralized lubrication.
In the future, we will continue to increase research and development efforts, from manufacturing to intelligent manufacturing change, the introduction of domestic and foreign advanced processing equipment and research and development of new technology to make better roller screen efforts.
