Technical Features of Zhongcheng's New ballistic screen

In the field of urban and rural solid waste resource utilization, mixed waste sorting has always been a pain point in the industry. Traditional screening equipment is prone to problems such as clogging, material entanglement, low sorting accuracy, and high failure rate when dealing with highly moist, sticky, and tangled household waste, construction waste, and aged waste, making it difficult to meet the needs of refined sorting. Zhongcheng Bounce Screen, as the core equipment developed by Zhengzhou Zhongcheng Environmental Protection for the sorting of complex solid waste, integrates multiple core technologies such as eccentric shaft drive, ballistic screening, and intelligent control, breaking through the performance bottlenecks of traditional screening equipment. With its unique technical design, stable operating performance, and wide adaptability to various scenarios, it has become a core piece of equipment in the solid waste sorting process. Its comprehensive technical features are detailed below.

1.Core Transmission Technology: Precise Ballistic Screening, Industry-Leading Sorting Efficiency

Zhongcheng's ballistic screen utilizes a self-developed eccentric shaft crank linkage transmission technology, coupled with a parallel four-bar linkage design. It abandons the high-frequency excitation mode of traditional vibrating screens, and through the coordinated operation of the active shaft, passive shaft, and eccentric wheel, the screen plate generates a regular and controllable reciprocating bouncing circular motion, forming a unique ballistic sorting trajectory. This achieves highly efficient separation of 2D lightweight materials and 3D heavy materials, completely solving the problems of unclear sorting and severe material mixing inherent in traditional equipment.

This transmission system boasts extremely high operational stability. The eccentric shaft is forged from high-strength alloy material, undergoes precision tempering and dynamic balancing, and is equipped with large-clearance heavy-duty bearings and a thin oil lubrication system. It operates smoothly with extremely low noise, suitable for continuous high-intensity operation 24/7, without jamming or deviation. The equipment's operating amplitude and frequency can be precisely controlled via a frequency converter system, flexibly adjusting the bouncing force according to different material characteristics. This ensures rapid forward conveying of lightweight, flexible materials such as plastics, paper, and fabric strips, while allowing heavy materials like broken bricks, gravel, and metal blocks to remain and be screened. The screening rate reaches over 95%, with a sorting purity far exceeding ordinary ballistic screens. The hourly processing capacity can reach 15-30 tons, adapting to the capacity requirements of large, medium, and small-scale solid waste treatment projects, and improving efficiency by over 40% compared to traditional screening equipment.

2. Structural Design Technology: Anti-clogging, Anti-entanglement, Durable, Adaptable to Complex Waste Conditions

Addressing the complex composition, high moisture content, high viscosity, and easy entanglement characteristics of domestic waste, Zhongcheng ballistic screens have undergone comprehensive structural design optimization, balancing durability, anti-clogging, and ease of maintenance, fundamentally solving common industry problems. The screen plates are custom-made from high-manganese wear-resistant alloy, making them impact-resistant, wear-resistant, and corrosion-resistant. They are resistant to deformation and breakage when facing sharp debris in construction waste and corrosive impurities in aged waste, extending their service life by 3-5 times compared to ordinary screen plates, significantly reducing the frequency of replacing vulnerable parts.

The screen plates feature a modular, detachable design, allowing individual plates to be disassembled without dismantling the entire machine. A single person can quickly complete replacement and cleaning operations, greatly improving maintenance efficiency. The screen plate gap and tilt angle are flexibly adjustable, and the arc-shaped graduation strips provide precise positioning, making it suitable for screening fine-particle soil as well as separating large-diameter debris, accommodating particle sizes from 3mm to 80mm. Meanwhile, the equipment adopts a screenless, open-type ballistic screen surface with an anti-tangling guide structure, abandoning the traditional dense-mesh screen design. This eliminates the problem of plastic bags, cloth strips, and fibrous debris clogging the screen. Materials are automatically dispersed and do not accumulate during the bouncing process on the screen surface. Even when processing high-moisture kitchen waste and aged waste with a moisture content of 40%-60%, it can maintain smooth operation without the need for shutdown for unclogging, ensuring continuous and stable operation of the production line.

3. Intelligent Control Technology: Automated Operation, Worry-Free and Efficient Operation and Maintenance

The Zhongcheng ballistic screen is equipped with a PLC intelligent frequency conversion control system, realizing fully automated control of the entire equipment process. This breaks through the limitations of traditional equipment, such as cumbersome manual debugging and inaccurate operating parameters, further improving the equipment's intelligence level. The system supports one-button start/stop, automatic amplitude and frequency adjustment, automatic fault alarm, and real-time monitoring of operating data. Operators can intuitively set operating parameters through the touch screen, allowing for quick operation without professional skills, reducing manual operation costs and error rates.

The intelligent system automatically adapts its operating power based on feed rate, material moisture content, and material composition, achieving on-demand energy consumption. This reduces energy consumption by approximately 35% compared to fixed-frequency equipment, aligning with the industry trend towards low-carbon and energy-saving practices. Simultaneously, the system features multiple safety protection functions, including overload protection, phase loss protection, and overheat protection. When issues such as feed overload, bearing overheating, or transmission abnormalities occur, the system immediately and automatically shuts down and alarms, preventing accidents caused by malfunctions and extending the overall machine's lifespan. Furthermore, the equipment can be integrated with a solid waste sorting line control system, enabling seamless linkage across the entire process of feeding, screening, conveying, and sorting. This facilitates the automation and intelligent upgrading of solid waste treatment production lines, reducing manual intervention and improving overall operational efficiency.

4. Environmentally Friendly Adaptive Technology: Sealed Noise Reduction and Dust Suppression, Meeting Green Disposal Standards

In line with current green and environmentally friendly requirements for solid waste treatment, the Zhongcheng ballistic screen adopts a fully sealed dustproof cover design, completely enclosing the screening station and effectively preventing dust diffusion during screening, avoiding secondary dust pollution. The sealed cover has observation windows and maintenance ports, which do not affect daily inspection and maintenance, while preventing odor diffusion, improving the workshop working environment and meeting the operating requirements of areas with stringent environmental regulations.

The equipment's transmission system adopts a low-noise and vibration-damping design, with minimal vibration and low noise during operation. Operating noise is controlled below 65 decibels, meeting the noise emission standards for industrial plants and suitable for operation at solid waste treatment sites near residential areas and in urban areas. Simultaneously, the equipment discharges no waste liquid or residue; the screening process is purely physical sorting, without the addition of any chemical reagents, and will not cause secondary pollution to materials or the surrounding environment. This perfectly aligns with the environmental protection concept of harmless and resource-based disposal of domestic waste, construction waste, and aged waste, helping projects successfully pass environmental acceptance.

5. Scene Adaptability Technology: Multi-functional, Covering All Types of Solid Waste Sorting

Zhongcheng's ballistic screen, with its flexible parameter adjustment and robust adaptability to various operating conditions, breaks through the limitations of single-device applications, achieving universal sorting for multiple scenarios and materials, truly realizing multi-purpose functionality. In the field of municipal solid waste treatment, it can efficiently separate components such as plastics, paper, kitchen waste, and bricks, improving the purity of recyclables; in the field of renovation and construction waste treatment, it quickly sorts materials such as wood chips, broken bricks, mortar, and plastics, achieving the separation of inert materials from recyclables; in the field of aged waste and landfill stock treatment, it effectively separates humus, light debris, and heavy materials, contributing to the reduction and resource utilization of stock waste; in addition, it can also be adapted to scenarios such as garden waste, industrial solid waste, and pre-treatment of kitchen waste, without replacing core components, only requiring minor adjustments to operating parameters to switch operating modes, significantly improving equipment utilization and reducing project equipment procurement costs.

Zhongcheng Bounce Screen, based on core transmission technology, supported by optimized structural design, and empowered by intelligent environmental protection technology, comprehensively overcomes the challenges of complex solid waste sorting. It boasts multiple technological advantages such as high efficiency, durability, intelligence, environmental protection, and multi-functionality. It not only meets the current needs of refined and large-scale solid waste treatment, but also adapts to the industry's trend of low-carbon and automated development. It is a highly cost-effective sorting equipment in solid waste resource treatment projects and a core piece of equipment to help the industry improve quality and efficiency and achieve green development.

Author : Serena Chang

Serena Chang is the writer of blog and news column. With more than 10 years of working experience in the machinery industry, she has a comprehensive understanding of environmental protection machinery and is willing to share useful knowledge of environmental protection machinery.