The working principle of the dry-mix mortar is a mixture of raw materials such as powder, dry sand with a moisture content of 0.2% or less, additives, etc., which are mixed in a certain proportion under dry conditions. As the key equipment for the production of dry-mixed mortar and the drying drum of the heat exchange gathering place, it is related to the running performance of the entire drying system and is the top priority of the dry-mixed mortar drying system. However, the current high energy consumption and low efficiency of drying drums on the market are the technical bottlenecks that limit the production capacity of dry mortar production lines. At present, the study of domestic drying drums is still in its infancy, and the technical level is not yet mature. Most of the drying drums produced by most companies cannot be optimized and unified in terms of thermal efficiency, productivity, and energy consumption. Therefore, the improvement of energy-saving and energy-saving drying drums is related to the technical position of Zoomlion in the dry-mix mortar drying system, and also related to the improvement of the production capacity of the entire dry-mixed mortar production line, and more importantly, the dry blending of the company in the future. The competitiveness of the mortar production line market.
For the overall lifting of the drying drum, the branch project team starts from the source, researches and analyzes the drying mechanism of the drying drum, and combines the construction experimental data of a large number of pre-owned subsidiary companies to determine the shape and distribution of the lifting board. Aspects have been optimized and improved. Through experiments and industrial assessment of the customer's site, the improved drying drum can easily achieve 50 tons of drying under the condition of meeting the standard sand source with moisture content ≤ 8% and mud content ≤ 3%. Yield. Moreover, according to the inspection of various parameters on the site, there is still a certain surplus of drying capacity, which has won the recognition of customers. This is also the largest drying capacity under the same operating conditions in the same type of drying drum in the industry.
In today's increasingly tense energy environment and increasingly stringent environmental protection requirements, environmental protection requirements for construction machinery are another important issue that companies must be concerned with in addition to equipment operation problems. However, as a dry-mixed mortar drying system for large energy consumption, its own energy consumption issues are not only related to environmental protection plans, but also an important factor in achieving customer profitability improvement. The new version of drying drum has been greatly improved due to heat exchange efficiency, and its coal consumption has also been greatly reduced. Through on-site inspection, Zoomlion's products reduced the coal consumption per unit of standard sand source for the same type of drying cylinders in the market by about 20%, and indirectly reduced the capital investment for energy raw coal for customers.
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