煤泥破碎机结构设计与参数分析

    Structural Design and Parameter Analysis of Coal slurry Crusher

    • 摘要: 针对超高压压滤技术产生的低水分煤泥(含水率 < 20%)因黏结性强、硬度提升导致的破碎难题,设计适配的高效破碎设备,以推动煤泥资源化利用。通过分析低水分煤泥的物理特性(普氏硬度值约为1、抗剪切能力弱),对比颚式破碎机(效率低)、锤式破碎机(易黏附)与齿辊破碎机的适用性,确定以剪切破碎为主的双齿辊方案。优化设计梳齿防黏结构与螺旋齿辊布局,建立处理能力计算模型,引入填空系数 K = 0.2 和一次性破碎效率 e = 0.75,并基于煤泥抗剪强度计算电机功率参数。研究结果表明:设计的双齿辊破碎机齿辊有效工作长度为1.5 m,破碎齿螺旋交错排列,可增强煤泥搅动翻转效果。经计算,设备理论处理能力达390.8 t/h,电机功率选用90 kW(或双电机45 kW×2),能有效解决煤泥黏附堵塞问题,破碎后煤泥粒度均匀,满足与块煤掺混的要求。该破碎机针对低水分煤泥特性设计,通过剪切破碎原理与防黏附结构的结合,克服了现有设备的局限性,处理能力和动力配置适配规模化生产,为煤泥高效破碎提供了实用技术方案。

       

      Abstract: The physical characteristics of low-moisture coal slime—marked by a low Proctor hardness (~1) and weak shear resistance—are analyzed to assess its crushability. A comparative evaluation of jaw crushers (low efficiency), hammer crushers (prone to adhesion), and toothed roll crushers supports the selection of a shear-dominant double-tooth roll crusher. The design integrates anti-adhesion comb-tooth structures and a spiral tooth-roll configuration. A processing capacity model is developed by introducing a void-filling coefficient (K = 0.2) and single-pass crushing efficiency (e = 0.75). Motor power parameters are calculated based on the shear strength of the coal slime. Results indicate that the effective working length of the rolls is 1.5 m, with staggered spiral teeth enhancing agitation and overturning. Theoretical throughput reaches 390.8 t/h, and a 90 kW motor (or dual 45 kW motors) is recommended. The system effectively addresses material adhesion and blockage issues, delivering uniform particle size suitable for blending with lump coal. Tailored for the properties of low-moisture coal slime, the crusher combines shear-based breaking with anti-adhesion design. It overcomes the limitations of conventional equipment and provides a scalable, practical solution for efficient coal slime crushing.

       

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