A Brief Discussion on the Technical Advantages of LB Series Asphalt Concrete Mixing Equipment

The LB-3000 asphalt mixture mixing equipment and LB series asphalt concrete mixing equipment of Shandong Dingtao Zhenhua Machinery Co., Ltd. are the new generation of mixing equipment developed by Shandong Dingtao Zhenhua Construction Machinery Co., Ltd. based on over ten years of production technology experience and the absorption of advanced foreign technologies. This product's main technical performance indicators comply with the standards: JT/ T270-1995 "General Technical Conditions for Asphalt Mixture Mixing Equipment" and GB50092-96 "Technical Specifications for Asphalt Pavement Construction", and the mixing quality meets the technical requirements for high-grade highway construction. This equipment has the following main features: 1. The dust removal system adopts negative pressure display, which can control the induced draft air volume to keep the combustion system always in the best operating state; 2. The hot aggregate storage silo is equipped with an upper-level positioner to effectively prevent material shortage or overflow. 3. The batching hopper adopts electromagnetic speed regulation, which is convenient for adjusting the batching speed. 4. The hot aggregate silo discharge adopts a double-stroke cylinder, and the aggregate measurement starts from coarse to fine, which improves the accuracy of aggregate batching. 5. The aggregate elevator adopts double-ring chain bucket lifting and gravity unloading, ensuring smooth and reliable lifting. 6. The drying drum is driven by friction, which operates smoothly with low noise. 7. The drying cylinder is equipped with an insulation device, which not only enhances the thermal efficiency but also makes it look beautiful. 8. The overall control system of the machine adopts online microcomputer monitoring and control, which not only improves the measurement accuracy of aggregates, powders and asphalt, but also is easy to operate and highly adaptable. This product features a reasonable structure, compact layout, advanced technology, high productivity, reliable operation of components, and the overall performance and main technical indicators of the machine reaching the leading level in China. It has passed the appraisal of the National Quality Appraisal Center and meets the requirements of the GB/T19001-2000 IDT ISO9001:2000 standard. It is an ideal equipment for the construction of high-grade highway pavement. Since engaging in the design, manufacture and after-sales service of asphalt concrete mixing equipment, based on user feedback and referring to the advanced experience of foreign and similar products, Hao Wenjian, the technical director of the company, shared his insights and experiences on this product with the editor of Hc360 Construction Machinery Network. At the design level: The design of asphalt concrete mixing equipment must first follow the "three benchmarks and one consistency" principle, that is, the design benchmark, processing benchmark and installation benchmark must be completely consistent. Only in this way can the intrinsic quality of the product be guaranteed. 2. Production level: Details determine quality. Good design must be guaranteed by good craftsmanship. Pay close attention to the details of the craftsmanship and ensure that every weld seam and every screw is strictly required. 3. Configuration level: I won't go into the major configurations here, but the detailed configurations must be done well. The pneumatic components that are most prone to problems are solenoid valves and coils. They must be equipped with pneumatic boxes and installed in moisture-proof places. The electromagnetic coil is prone to short circuit when exposed to damp air. The air path is equipped with stainless steel pipes, which are not prone to aging, deformation or air leakage. The lubrication marks of each transmission part should be obvious. Prevent maintenance personnel from missing lubricating oil. 4. Installation and commissioning level: During installation, strictly follow the factory's installation steps. After completion, conduct a thorough inspection. During commissioning, it must be carried out in sections, starting with no-load and then loaded, and starting with local areas and then the overall. Based on the digestion and absorption of advanced technologies both at home and abroad, efforts are mainly made to enhance the efficiency, energy conservation and reduce the failure rate of the products. It is reflected in the following aspects: 1. The lifting plates inside the drying cylinder are arranged in an angular streamlined pattern. When the aggregates run inside, they form a evenly scattered material curtain, which improves the thermal efficiency of the aggregate drying cylinder. 2. The coal-fired dyeing device is our product. The coal-fired dyeing device greatly increases the effective calorific value of coal by crushing it into extremely fine particles. It features multiple air ducts, complete combustion and strong firepower. Compared with fuel, it can reduce costs by about 80%, with significant economic benefits. It eliminates the drawback that other manufacturers often burn out the outlet and furnace chamber, and requires no maintenance. 3. The mixing cylinder is a key component of the mixer. The aspect ratio parameters of the design stirring tank, the volume coefficient of the stirring tank, the arrangement density of the stirring arms, and the setting Angle of the stirring blades will affect the stirring output and stirring quality. Based on the structural features of imported mixers and my research on their advanced experience, I have made reliable improvements to the spacing of the stirring arms and the Angle of the stirring blades through continuous exploration. 4. The motor control adopts advanced electrical components, with the main components being products from Siemens, Schneider, Omron, etc., ensuring the reliability of long-term use. The motor drive control circuit is equipped with a "protection circuit" based on the sequence of start-up, thus ensuring the safety and reliability of the operation during the working process. The motor of the belt feeder in the ground distribution hopper adopts variable frequency speed regulation control, which improves the accuracy of speed regulation. 5. The control system adopts microcomputer control. This product has strong anti-interference ability and good operational reliability. The microcomputer automatic control system adopts the lower computer to detect and process production variables, and the upper computer to reliably control the production process, achieving fully automatic operation.