In the production area of Xinxiang Zhouchi Machinery Equipment Co., LTD., two special banana-shaped vibrating screens (straight equal thick screens) for coal mines, after completing the final round of performance calibration before leaving the factory, were orderly hoisted onto two heavy-duty transport vehicles and will be sent in batches to large-scale coal mine washing and selection bases in Shuozhou, Shanxi Province, Ordos, Inner Mongolia Autonomous Region and other places. As a core equipment specially customized for the dewatering and medium removal processes in coal mines, this large-scale shipment not only attests to Zhouchi Machinery's technical strength in the field of mining equipment, but also will provide a solid guarantee for improving the washing and selection efficiency and reducing production costs in the main coal-producing areas of Shanxi and Inner Mongolia. ​

Double breakthroughs in technology have been achieved, and the core problems in coal mine washing and selection have been overcome
This banana-shaped vibrating screen (linear uniform thick screen) developed by Zhouchi Machinery, driven by the dual wheels of "structural adaptation + technical optimization", precisely addresses the pain points in the dewatering and medium removal process of coal mines. The equipment adopts a unique "banana-shaped variable inclination screen box" design. The inclination Angle of the screen surface smoothly transitions from 18° at the feeding end to 6° at the discharging end. Combined with the principle of linear equal thickness screening, it enables raw coal and clean coal to form a uniform material layer on the screen surface, avoiding the problems of incomplete dewatering and medium residue caused by feeding accumulation in traditional equipment. Meanwhile, the equipment innovatively adopts a "self-cleaning screen" structure. Through a high-frequency micro-vibration device, it automatically cleans the coal slime blockages in the screen pores, increasing the screening efficiency by more than 40% compared to traditional vibrating screens. ​
In terms of industrial performance, this equipment has been comprehensively strengthened for the harsh working conditions of coal mines: The screen frame is welded from Q345B high-strength steel plates, and after aging treatment, its anti-deformation capacity has been increased by 30%. The screen surface is made of composite wear-resistant materials and coated with tungsten carbide. Its service life can reach over 8,000 hours, far exceeding the industry average. The maximum processing capacity of a single device can reach up to 200 tons per hour, with a stable dehydration efficiency of over 93%. It can keep the moisture content of clean coal below 16%, and the medium removal efficiency exceeds 98.5%. Annually, it can help a single medium-sized washing and selection plant reduce medium consumption costs by over one million yuan. In addition, the equipment is equipped with an explosion-proof frequency conversion control system, which can adjust the vibration frequency and amplitude in real time according to the changes in coal quality, and is suitable for the washing and selection requirements of various coal types such as coking coal, anthracite, and thermal coal. ​
Full-cycle guarantee, breaking through the "last mile" of equipment implementation
To ensure the rapid commissioning and stable operation of the equipment in coal mine scenarios, Zhouchi Machinery has established a full-cycle service system covering "from production to operation and maintenance". In the production process, a mechanism of "component traceability + full-process quality inspection" is implemented. Key components such as explosion-proof motors and wear-resistant bearings are all purchased from internationally renowned brands and have undergone four pressure tests and extreme working condition simulations. Before leaving the factory, each piece of equipment needs to complete a 168-hour continuous full-load operation test in a simulated coal mine washing and selection workshop environment to comprehensively verify the dehydration and desmedia effect, equipment stability and safety performance. During the logistics transportation stage, in view of the severe cold in winter and the bumpy sections of some roads in the Shanxi and Inner Mongolia regions, insulated and moisture-proof packaging and special transport vehicles with air suspension are adopted to prevent damage to the equipment during transportation. ​
In terms of on-site services, Zhouchi Machinery offers customized solutions of "one mine, one policy". For the large-scale intelligent washing and selection plant in Ordos, Inner Mongolia, a technical team was dispatched to participate in the plant area planning to achieve seamless integration between the equipment and the intelligent washing and selection system. For the old washing and selection plants in Shuozhou, Shanxi Province, we provide equipment renovation and upgrading services to help enterprises revitalize their existing production capacity. In response to industrial policies, promote the green transformation of the coal industry
At present, the state is vigorously promoting the "cost reduction, efficiency improvement, green and low-carbon" development of the coal industry. As a key link in the clean utilization of coal, the washing and selection process has an increasingly urgent demand for high-efficiency and energy-saving equipment. According to data from the China Coal Processing and Utilization Association, the energy waste and medium consumption loss caused by low equipment efficiency in the coal washing and selection process in China exceed 5 billion yuan annually. However, the application of efficient dehydration and medium removal equipment can increase the comprehensive benefits of washing and selection by more than 35%. The banana-shaped vibrating screen (straight equal thick screen) dispatched in bulk by Zhouchi Machinery this time is a core equipment that responds to industrial policies and meets market demands. Its efficient dewatering and medium removal capacity can not only reduce the cost of coal transportation but also decrease coal slime pollution, helping coal mining enterprises achieve green production.