化工设计通讯

针对滚筒冷渣机旋转水管与固定料箱间传统迷宫密封存在的颗粒物泄漏严重、维护成本高、可靠性低等问题，研究提出一种综合优化改造方案。通过引入弯曲连通支撑管、金属软管、单通路双球面密封旋转接头、径向弹性支架及陶瓷纤维填料密封，构建柔性补偿系统，有效吸收位移和热变形。改造后，密封装置无组织排放监控颗粒物浓度由5.7 mg/m³降至0.1 mg/m³，明显优于《大气污染物综合排放标准》(GB 16297—1996)限值。设备故障停机损失减少96万元/a，安装同轴度要求由1 mm放宽至3 mm，找正施工效率提升50%。研究表明，该改造方案通过动态补偿与冗余密封设计，显著提升了密封可靠性及环保性能，为高温、含尘工况下的旋转密封提供了有效解决方案。

Aiming at the problems of severe particulate leakage, high maintenance cost, and low reliability of the traditional labyrinth seal between the rotating water pipe of the drum cold slag machine and the fixed material box, this paper proposes a comprehensive optimization and transformation scheme. By introducing bent connecting support pipes, metal flexible hoses, single-path double-spherical-seal rotary joints, radial elastic brackets, and ceramic fiber packing seal, a flexible compensation system is constructed to effectively absorb displacement and thermal deformation. After the transformation, the particulate concentration monitored in the unorganized emission of the sealing device was reduced from 5.7 mg/m³ to 0.1 mg/m³, which is significantly better than the limit value of the "Comprehensive Emission Standard for Air Pollutants"(GB 16297—1996). The equipment downtime loss due to failure was reduced by 960 000 yuan/year, the coaxial installation requirement was relaxed from 1 mm to 3 mm,and the alignment construction efficiency was increased by 50%. The study shows that the transformation scheme significantly improves the sealing reliability and environmental performance through dynamic compensation and redundant sealing design, providing an effective solution for rotary sealing under high-temperature and dusty conditions.